diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-09-03 11:32:16 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-09-03 11:32:16 +0200 |
| commit | f53835f110f19934271c48f01e463c0aa302827d (patch) | |
| tree | bf714adcab82287293dcdf1d2fb5336999834cc3 /Documentation | |
| parent | 10c8d1bd786508e996837d5d4b125c69315c5529 (diff) | |
| parent | c4b43d8336e52dce6d124e428aa3b71703e62647 (diff) | |
Merge tag 'iio-for-6.12a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-testing
Jonathan writes:
IIO: 1st set of new device support, features and cleanup for 6.12
Includes a merge of spi-mos-config branch from spi.git that brings
support needed for the AD4000 driver.
Lots of new device support this time including 9 new drivers and substantial
changes to add new support to several more.
New device support
------------------
Given we have a lot of new support, I've subcategorized them:
Substantial changes, or new driver
**********************************
adi,ad4000
- New driver for this high speed ADC.
adi,ad4695
- New driver supporting AD4690, AD4696, AD4697 and AD4698 ADCs.
- Follow up series added triggered buffer support.
adi,ad7380
- Add support for single ended parts, AD7386, ADC7387, AD7388 and -4 variants.
(driver previously only support differential parts).
These variants have an additional front end MUX so only half the channels
can be sampled efficiently.
adi,ad9467
- Refactor and extend driver to support ad9643, ad9449 and ad9652 high speed
ADCs.
adi,adxl380
- New driver for this low power accelerometer.
adi,ltc2664
- New driver supporting LTC2664 and LTC2672 DACs.
microchip,pac1921
- New driver for this power/current monitor chip.
rohm,bh1745
- New driver for this RGBC colour sensor.
rohm,bu27034anuc
- The original bu27034 was canceled before mass production, so the
driver is modified to support the BU27034ANUC which had some significant
differences. DT compatible changed to avoid chance of old driver ever
binding to real hardware.
sciosense,ens210
- New driver for ens210, ens210a, ens211, ens212, ens213a, and ens215
temperature and humidity sensors (all register compatible up to some
conversion time differences)
sensiron,sdp500
- New driver for this differential pressure sensor.
tyhx,hx9023s
- New driver to support this capacitive proximity sensor.
Minor changes to support new devices
************************************
adi,adf4377
- Add support for the single output adf4378.
kionix,kxcjk-1013
- Add support for KX022-1020 accelerometer (binding and ID table only)
liteon,ltrf216a
- Add support for ltr-308. A few minor differences in features set
rockchip,saradc
- Add ID for rk3576-saradc
sensortek,stk3310
- Add ID for stk3013 proximity sensor which (despite documentation) has
an ambient light sensor and is compatible with existing parts.
Documentation updates
---------------------
Generalize ABI docs for shunt resistor attribute
Improve calibscale and calibbias related documentation. A couple of follow
up patches to resolve duplicate documentation that resulted.
New core features
-----------------
backend
- Add option for debugfs - useful for test pattern control
- Use this for both adi-axi-adc and adi-axi-dac
trigger suspend
- Add functions to allow triggers to be suspended. This avoids problems
when a device enters suspend to idle with a sysfs trigger. Use it for now
in the bmi323 only.
New driver features
-------------------
adi,ad7192
- Add option to be a clock provider (+ additional clock config options)
adi,ad7380
- Add documentation for this fairly new driver.
adi,ad9461
- Provide control of test modes and backend validation blocks used
to identify problems (via debugfs)
adi,ad9739
- Add backend debugfs and docs for what is provided via adi-axi-dac
avago,apds9960
- Add proximity and gesture calibration offset control
bosch,bmp280
- Triggered buffer support including adding raw+scale output for sysfs.
liteon,ltr390
- Add configuration of integration time and scale.
stm,dfsdm
- Convert this SD modulator driver to backend framework and add support
for channel scaling + modern channel bindings.
Treewide cleanup
----------------
iio_dev->masklength: Making it private.
- Provide access function to read the core compute channel mask length
and a macro to iterate over elements in the active_scan_mask.
- Enables marking masklength __private preventing drivers from
writing it without triggering a build warning whilst minimizing overhead
in what are typically hot paths.
- Convert all drivers and finally mark it private.
Merge conflicts resolved in drivers applied after this point.
Constify regmap_bus
- These are never modified, so mark them const.
Core cleanup
------------
backend
- A few late breaking bits of feedback (unused variable, error messages)
dma-buffer
- Namespace exports.
core
- Drop unused assignment.
Driver cleanup
--------------
adi,ad4695
- Fixing binding to reflect that common-mode-channel is a scalar.
adi,ad7280a
- Use __free(kfree) to simplify freeing of receive buffer.
adi,ad7606
- Various dt-binding cleanup and improvements.
- Fix oversampling related gpio handling.
- Make polarity of standby gpio match documentation.
- use guard() to simplify lock handling.
adi,ad7768
- Use device_for_each_child_node_scoped() instead of fwnode equivalent.
adi,ad7124
- Reduce SPI transfers by avoiding separate writes to different fields
in the same register.
- Start the ADC in idle mode.
adi,adis
- Drop ifdefs in favor of IS_ENABLED.
adi,admv8818
- Fix wrong ABI docs.
asahi-kasei,ak8975
- Drop a prefix free compatible accidentally added recently.
aspeed,adc
- Use of_property_present() instead of of_find_property() to see if the
property is there or not.
atmel,at91,
- Use __free(kfree) to simplify freeing of channel related array.
bosch,bma400
- Use __free(kfree) to simplify freeing a locally allocated string.
bosch,bmc150
- Add missing mount-matrix binding docs.
bosch,bme680
- Fix read/write to ensure multiple necessary sequential reads without
device configuration change.
- Drop unnecessary type casts and use more appropriate data types.
- Drop some left over ACPI code as ACPI support was removed due to invalid
IDs (and no known users).
- Sort headers consistently.
- Avoid unnecessary duplicate read and redundant read of gas config.
- Use bulk reads to get calibration data.
- Reorder allocation of IIO device to be prior to device init.
- Add remaining read/write buffers to the union used already for all others.
- Tidy up error checks for consistency of style, including dev_err_probe()
- Bring the device startup procedure inline with the vendor code.
- Reorder code so mode forcing is more obvious occurring where needed.
- Tidy up data locality in reading functions so no magic data is stored
in state structures just to get it across function calls.
- Make a local lookup table static to avoid placing it on the stack.
bosch,bmp280
- Fix BME280 regmap to not include registers it doesn't have.
- Wait a little longer after config to allow for maximum possible necessary
wait.
- Reorganize headers.
- Make conversion_time_max array static to avoid placing it on the stack.
maxim,max1363
- Use __free(kfree) to simplify freeing transmission buffer.
microchip,mcp3964
- Use devm_regulator_get_enable_read_voltage()
microchip,mcp3911
- Use devm_regulator_get_enable_read_voltage()
microchip,mcp4728
- Use devm_regulator_get_enable_read_voltage()
microchip,mcp4922
- Use devm_regulator_get_enable_read_voltage() and devm_* to allow
dropping of explicit remove() callback.
onnn,noa1305
- Various tidy up.
- Provide available scale values.
- Make integration time configurable.
- Fix up integration time look up (/2 error)
ti,dac7311
- Check if spi_setup() succeeded.
ti,tsc2046
- Use __free(kfree) to simplify freeing rx and tx buffers.
- Use devm_regulator_get_enable_read_voltage()
Various minor fixes not called out explicitly.
* tag 'iio-for-6.12a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (250 commits)
drivers:iio:Fix the NULL vs IS_ERR() bug for debugfs_create_dir()
iio: sgp40: retain documentation in driver
iio: ABI: remove duplicate in_resistance_calibbias
dt-bindings: iio: st,stm32-adc: add top-level constraints
iio: ABI: add missing calibbias attributes
iio: ABI: add missing calibscale attributes
iio: ABI: sort calibscale attributes
iio: ABI: document calibscale_available attributes
iio: light: ltr390: Calculate 'counts_per_uvi' dynamically
iio: light: ltr390: Add ALS channel and support for gain and resolution
doc: iio: ad4695: document buffered read
iio: adc: ad4695: implement triggered buffer
iio: proximity: hx9023s: Fix error code in hx9023s_property_get()
iio: light: noa1305: Fix up integration time look up
iio: humidity: Add support for ENS210
dt-bindings: iio: humidity: add ENS210 sensor family
iio: imu: adis16460: drop ifdef around CONFIG_DEBUG_FS
iio: imu: adis16400: drop ifdef around CONFIG_DEBUG_FS
iio: imu: adis16480: drop ifdef around CONFIG_DEBUG_FS
iio: imu: adis16475: drop ifdef around CONFIG_DEBUG_FS
...
Diffstat (limited to 'Documentation')
42 files changed, 2480 insertions, 152 deletions
diff --git a/Documentation/ABI/testing/debugfs-iio-ad9467 b/Documentation/ABI/testing/debugfs-iio-ad9467 new file mode 100644 index 000000000000..0352fca1f7f2 --- /dev/null +++ b/Documentation/ABI/testing/debugfs-iio-ad9467 @@ -0,0 +1,39 @@ +What: /sys/kernel/debug/iio/iio:deviceX/calibration_table_dump +KernelVersion: 6.11 +Contact: linux-iio@vger.kernel.org +Description: + This dumps the calibration table that was filled during the + digital interface tuning process. + +What: /sys/kernel/debug/iio/iio:deviceX/in_voltage_test_mode_available +KernelVersion: 6.11 +Contact: linux-iio@vger.kernel.org +Description: + List all the available test tones: + - off + - midscale_short + - pos_fullscale + - neg_fullscale + - checkerboard + - prbs23 + - prbs9 + - one_zero_toggle + - user + - bit_toggle + - sync + - one_bit_high + - mixed_bit_frequency + - ramp + + Note that depending on the actual device being used, some of the + above might not be available (and they won't be listed when + reading the file). + +What: /sys/kernel/debug/iio/iio:deviceX/in_voltageY_test_mode +KernelVersion: 6.11 +Contact: linux-iio@vger.kernel.org +Description: + Writing to this file will initiate one of available test tone on + channel Y. Reading it, shows which test is running. In cases + where an IIO backend is available and supports the test tone, + additional information about the data correctness is given. diff --git a/Documentation/ABI/testing/debugfs-iio-backend b/Documentation/ABI/testing/debugfs-iio-backend new file mode 100644 index 000000000000..01ab94469432 --- /dev/null +++ b/Documentation/ABI/testing/debugfs-iio-backend @@ -0,0 +1,20 @@ +What: /sys/kernel/debug/iio/iio:deviceX/backendY/name +KernelVersion: 6.11 +Contact: linux-iio@vger.kernel.org +Description: + Name of Backend Y connected to device X. + +What: /sys/kernel/debug/iio/iio:deviceX/backendY/direct_reg_access +KernelVersion: 6.11 +Contact: linux-iio@vger.kernel.org +Description: + Directly access the registers of backend Y. Typical usage is: + + Reading address 0x50 + echo 0x50 > direct_reg_access + cat direct_reg_access + + Writing address 0x50 + echo 0x50 0x3 > direct_reg_access + //readback address 0x50 + cat direct_reg_access diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio index 7cee78ad4108..345d58535dc9 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio +++ b/Documentation/ABI/testing/sysfs-bus-iio @@ -523,13 +523,26 @@ Description: What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibbias What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibbias What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias +What: /sys/bus/iio/devices/iio:deviceX/in_altvoltageY_i_calibbias +What: /sys/bus/iio/devices/iio:deviceX/in_altvoltageY_q_calibbias What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias +What: /sys/bus/iio/devices/iio:deviceX/in_capacitance_calibbias +What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibbias What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias -What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias -What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias +What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_calibbias +What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_calibbias +What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_calibbias +What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_calibbias What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibbias +What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias +What: /sys/bus/iio/devices/iio:deviceX/in_proximity_calibbias +What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias +What: /sys/bus/iio/devices/iio:deviceX/in_resistance_calibbias +What: /sys/bus/iio/devices/iio:deviceX/in_temp_calibbias +What: /sys/bus/iio/devices/iio:deviceX/out_currentY_calibbias +What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_calibbias KernelVersion: 2.6.35 Contact: linux-iio@vger.kernel.org Description: @@ -541,6 +554,9 @@ Description: What: /sys/bus/iio/devices/iio:deviceX/in_accel_calibbias_available What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_calibbias_available +What: /sys/bus/iio/devices/iio:deviceX/in_temp_calibbias_available +What: /sys/bus/iio/devices/iio:deviceX/in_proximity_calibbias_available +What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_calibbias_available KernelVersion: 5.8 Contact: linux-iio@vger.kernel.org Description: @@ -549,25 +565,34 @@ Description: - a small discrete set of values like "0 2 4 6 8" - a range specified as "[min step max]" -What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale -What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale -What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_calibscale -What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_calibscale -What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_calibscale -What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_calibscale -What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage_calibscale -What: /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale +What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage_calibscale What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale +What: /sys/bus/iio/devices/iio:deviceX/in_capacitance_calibscale +What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibscale What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale -What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale -What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale +What: /sys/bus/iio/devices/iio:deviceX/in_intensity_both_calibscale +What: /sys/bus/iio/devices/iio:deviceX/in_intensity_calibscale +What: /sys/bus/iio/devices/iio:deviceX/in_intensity_ir_calibscale +What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_calibscale +What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_calibscale +What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_calibscale What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibscale -What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibscale +What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale +What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale +What: /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale +What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_calibscale +What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_calibscale +What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale +What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_calibscale +What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_calibscale +What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale +What: /sys/bus/iio/devices/iio:deviceX/out_currentY_calibscale +What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_calibscale KernelVersion: 2.6.35 Contact: linux-iio@vger.kernel.org Description: @@ -575,6 +600,19 @@ Description: production inaccuracies). If shared across all channels, <type>_calibscale is used. +What: /sys/bus/iio/devices/iio:deviceX/in_illuminanceY_calibscale_available +What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_calibscale_available +What: /sys/bus/iio/devices/iio:deviceX/in_proximityY_calibscale_available +KernelVersion: 4.8 +Contact: linux-iio@vger.kernel.org +Description: + Available values of calibscale. Maybe expressed as either of: + + - a small discrete set of values like "1 8 16" + - a range specified as "[min step max]" + + If shared across all channels, <type>_calibscale_available is used. + What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender @@ -708,6 +746,7 @@ Description: 2.5kohm_to_gnd: connected to ground via a 2.5kOhm resistor, 6kohm_to_gnd: connected to ground via a 6kOhm resistor, 20kohm_to_gnd: connected to ground via a 20kOhm resistor, + 42kohm_to_gnd: connected to ground via a 42kOhm resistor, 90kohm_to_gnd: connected to ground via a 90kOhm resistor, 100kohm_to_gnd: connected to ground via an 100kOhm resistor, 125kohm_to_gnd: connected to ground via an 125kOhm resistor, @@ -2289,3 +2328,11 @@ KernelVersion: 6.7 Contact: linux-iio@vger.kernel.org Description: List of available timeout value for tap gesture confirmation. + +What: /sys/.../iio:deviceX/in_shunt_resistor +What: /sys/.../iio:deviceX/in_current_shunt_resistor +What: /sys/.../iio:deviceX/in_power_shunt_resistor +KernelVersion: 6.10 +Contact: linux-iio@vger.kernel.org +Description: + The value of current sense resistor in Ohms. diff --git a/Documentation/ABI/testing/sysfs-bus-iio-adc-max9611 b/Documentation/ABI/testing/sysfs-bus-iio-adc-max9611 deleted file mode 100644 index 6d2d2b094941..000000000000 --- a/Documentation/ABI/testing/sysfs-bus-iio-adc-max9611 +++ /dev/null @@ -1,17 +0,0 @@ -What: /sys/bus/iio/devices/iio:deviceX/in_power_shunt_resistor -Date: March 2017 -KernelVersion: 4.12 -Contact: linux-iio@vger.kernel.org -Description: The value of the shunt resistor used to compute power drain on - common input voltage pin (RS+). In Ohms. - -What: /sys/bus/iio/devices/iio:deviceX/in_current_shunt_resistor -Date: March 2017 -KernelVersion: 4.12 -Contact: linux-iio@vger.kernel.org -Description: The value of the shunt resistor used to compute current flowing - between RS+ and RS- voltage sense inputs. In Ohms. - -These attributes describe a single physical component, exposed as two distinct -attributes as it is used to calculate two different values: power load and -current flowing between RS+ and RS- inputs. diff --git a/Documentation/ABI/testing/sysfs-bus-iio-chemical-sgp40 b/Documentation/ABI/testing/sysfs-bus-iio-chemical-sgp40 index 469a7c00fad4..a95547e874f1 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-chemical-sgp40 +++ b/Documentation/ABI/testing/sysfs-bus-iio-chemical-sgp40 @@ -15,17 +15,3 @@ Description: Set the relative humidity. This value is sent to the sensor for humidity compensation. Default value: 50000 (50 % relative humidity) - -What: /sys/bus/iio/devices/iio:deviceX/in_resistance_calibbias -Date: August 2021 -KernelVersion: 5.15 -Contact: Andreas Klinger <ak@it-klinger.de> -Description: - Set the bias value for the resistance which is used for - calculation of in_concentration_input as follows: - - x = (in_resistance_raw - in_resistance_calibbias) * 0.65 - - in_concentration_input = 500 / (1 + e^x) - - Default value: 30000 diff --git a/Documentation/ABI/testing/sysfs-bus-iio-dac b/Documentation/ABI/testing/sysfs-bus-iio-dac new file mode 100644 index 000000000000..810eaac5533c --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-iio-dac @@ -0,0 +1,61 @@ +What: /sys/bus/iio/devices/iio:deviceX/out_currentY_toggle_en +KernelVersion: 5.18 +Contact: linux-iio@vger.kernel.org +Description: + Toggle enable. Write 1 to enable toggle or 0 to disable it. This + is useful when one wants to change the DAC output codes. For + autonomous toggling, the way it should be done is: + + - disable toggle operation; + - change out_currentY_rawN, where N is the integer value of the symbol; + - enable toggle operation. + +What: /sys/bus/iio/devices/iio:deviceX/out_currentY_rawN +KernelVersion: 5.18 +Contact: linux-iio@vger.kernel.org +Description: + This attribute has the same meaning as out_currentY_raw. It is + specific to toggle enabled channels and refers to the DAC output + code in INPUT_N (_rawN), where N is the integer value of the symbol. + The same scale and offset as in out_currentY_raw applies. + +What: /sys/bus/iio/devices/iio:deviceX/out_currentY_symbol +KernelVersion: 5.18 +Contact: linux-iio@vger.kernel.org +Description: + Performs a SW switch to a predefined output symbol. This attribute + is specific to toggle enabled channels and allows switching between + multiple predefined symbols. Each symbol corresponds to a different + output, denoted as out_currentY_rawN, where N is the integer value + of the symbol. Writing an integer value N will select out_currentY_rawN. + +What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_toggle_en +KernelVersion: 5.18 +Contact: linux-iio@vger.kernel.org +Description: + Toggle enable. Write 1 to enable toggle or 0 to disable it. This + is useful when one wants to change the DAC output codes. For + autonomous toggling, the way it should be done is: + + - disable toggle operation; + - change out_voltageY_rawN, where N is the integer value of the symbol; + - enable toggle operation. + +What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_rawN +KernelVersion: 5.18 +Contact: linux-iio@vger.kernel.org +Description: + This attribute has the same meaning as out_currentY_raw. It is + specific to toggle enabled channels and refers to the DAC output + code in INPUT_N (_rawN), where N is the integer value of the symbol. + The same scale and offset as in out_currentY_raw applies. + +What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_symbol +KernelVersion: 5.18 +Contact: linux-iio@vger.kernel.org +Description: + Performs a SW switch to a predefined output symbol. This attribute + is specific to toggle enabled channels and allows switching between + multiple predefined symbols. Each symbol corresponds to a different + output, denoted as out_voltageY_rawN, where N is the integer value + of the symbol. Writing an integer value N will select out_voltageY_rawN. diff --git a/Documentation/ABI/testing/sysfs-bus-iio-dac-ltc2688 b/Documentation/ABI/testing/sysfs-bus-iio-dac-ltc2688 index 1c35971277ba..ae95a5477382 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-dac-ltc2688 +++ b/Documentation/ABI/testing/sysfs-bus-iio-dac-ltc2688 @@ -53,34 +53,3 @@ KernelVersion: 5.18 Contact: linux-iio@vger.kernel.org Description: Returns the available values for the dither phase. - -What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_toggle_en -KernelVersion: 5.18 -Contact: linux-iio@vger.kernel.org -Description: - Toggle enable. Write 1 to enable toggle or 0 to disable it. This is - useful when one wants to change the DAC output codes. The way it should - be done is: - - - disable toggle operation; - - change out_voltageY_raw0 and out_voltageY_raw1; - - enable toggle operation. - -What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw0 -What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw1 -KernelVersion: 5.18 -Contact: linux-iio@vger.kernel.org -Description: - It has the same meaning as out_voltageY_raw. This attribute is - specific to toggle enabled channels and refers to the DAC output - code in INPUT_A (_raw0) and INPUT_B (_raw1). The same scale and offset - as in out_voltageY_raw applies. - -What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_symbol -KernelVersion: 5.18 -Contact: linux-iio@vger.kernel.org -Description: - Performs a SW toggle. This attribute is specific to toggle - enabled channels and allows to toggle between out_voltageY_raw0 - and out_voltageY_raw1 through software. Writing 0 will select - out_voltageY_raw0 while 1 selects out_voltageY_raw1. diff --git a/Documentation/ABI/testing/sysfs-bus-iio-filter-admv8818 b/Documentation/ABI/testing/sysfs-bus-iio-filter-admv8818 index 31dbb390573f..c431f0a13cf5 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-filter-admv8818 +++ b/Documentation/ABI/testing/sysfs-bus-iio-filter-admv8818 @@ -3,7 +3,7 @@ KernelVersion: Contact: linux-iio@vger.kernel.org Description: Reading this returns the valid values that can be written to the - on_altvoltage0_mode attribute: + filter_mode attribute: - auto -> Adjust bandpass filter to track changes in input clock rate. - manual -> disable/unregister the clock rate notifier / input clock tracking. diff --git a/Documentation/ABI/testing/sysfs-bus-iio-ina2xx-adc b/Documentation/ABI/testing/sysfs-bus-iio-ina2xx-adc index 8916f7ec6507..8dbca113112d 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-ina2xx-adc +++ b/Documentation/ABI/testing/sysfs-bus-iio-ina2xx-adc @@ -13,12 +13,3 @@ Description: available for reading data. However, samples can be occasionally skipped or repeated, depending on the beat between the capture and conversion rates. - -What: /sys/bus/iio/devices/iio:deviceX/in_shunt_resistor -Date: December 2015 -KernelVersion: 4.4 -Contact: linux-iio@vger.kernel.org -Description: - The value of the shunt resistor may be known only at runtime fom an - eeprom content read by a client application. This attribute allows to - set its value in ohms. diff --git a/Documentation/devicetree/bindings/iio/accel/adi,adxl380.yaml b/Documentation/devicetree/bindings/iio/accel/adi,adxl380.yaml new file mode 100644 index 000000000000..f1ff5ff4f478 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/accel/adi,adxl380.yaml @@ -0,0 +1,92 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/accel/adi,adxl380.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices ADXL380/382 3-Axis Digital Accelerometer + +maintainers: + - Ramona Gradinariu <ramona.gradinariu@analog.com> + - Antoniu Miclaus <antoniu.miclaus@analog.com> + +description: | + The ADXL380/ADXL382 is a low noise density, low power, 3-axis + accelerometer with selectable measurement ranges. The ADXL380 + supports the ±4 g, ±8 g, and ±16 g ranges, and the ADXL382 supports + ±15 g, ±30 g, and ±60 g ranges. + + https://www.analog.com/en/products/adxl380.html + +properties: + compatible: + enum: + - adi,adxl380 + - adi,adxl382 + + reg: + maxItems: 1 + + interrupts: + minItems: 1 + maxItems: 2 + + interrupt-names: + minItems: 1 + items: + - enum: [INT0, INT1] + - const: INT1 + + vddio-supply: true + + vsupply-supply: true + +required: + - compatible + - reg + - interrupts + - interrupt-names + - vddio-supply + - vsupply-supply + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + accelerometer@54 { + compatible = "adi,adxl380"; + reg = <0x54>; + vddio-supply = <&vddio>; + vsupply-supply = <&vsupply>; + interrupt-parent = <&gpio>; + interrupts = <25 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "INT0"; + }; + }; + - | + #include <dt-bindings/interrupt-controller/irq.h> + + spi { + #address-cells = <1>; + #size-cells = <0>; + + accelerometer@0 { + compatible = "adi,adxl380"; + reg = <0>; + spi-max-frequency = <8000000>; + vddio-supply = <&vddio>; + vsupply-supply = <&vsupply>; + interrupt-parent = <&gpio>; + interrupts = <25 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "INT0"; + }; + }; diff --git a/Documentation/devicetree/bindings/iio/accel/kionix,kxcjk1013.yaml b/Documentation/devicetree/bindings/iio/accel/kionix,kxcjk1013.yaml index 6ddb03f61bd9..951a3a2ba8fc 100644 --- a/Documentation/devicetree/bindings/iio/accel/kionix,kxcjk1013.yaml +++ b/Documentation/devicetree/bindings/iio/accel/kionix,kxcjk1013.yaml @@ -16,6 +16,7 @@ properties: - kionix,kxcj91008 - kionix,kxtj21009 - kionix,kxtf9 + - kionix,kx022-1020 - kionix,kx023-1025 reg: diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad4000.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad4000.yaml new file mode 100644 index 000000000000..e413a9d8d2a2 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad4000.yaml @@ -0,0 +1,197 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/adi,ad4000.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD4000 and similar Analog to Digital Converters + +maintainers: + - Marcelo Schmitt <marcelo.schmitt@analog.com> + +description: | + Analog Devices AD4000 family of Analog to Digital Converters with SPI support. + Specifications can be found at: + https://www.analog.com/media/en/technical-documentation/data-sheets/ad4000-4004-4008.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/ad4001-4005.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/ad4002-4006-4010.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/ad4003-4007-4011.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/ad4020-4021-4022.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/adaq4001.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/adaq4003.pdf + +$ref: /schemas/spi/spi-peripheral-props.yaml# + +properties: + compatible: + oneOf: + - const: adi,ad4000 + - items: + - enum: + - adi,ad4004 + - adi,ad4008 + - const: adi,ad4000 + + - const: adi,ad4001 + - items: + - enum: + - adi,ad4005 + - const: adi,ad4001 + + - const: adi,ad4002 + - items: + - enum: + - adi,ad4006 + - adi,ad4010 + - const: adi,ad4002 + + - const: adi,ad4003 + - items: + - enum: + - adi,ad4007 + - adi,ad4011 + - const: adi,ad4003 + + - const: adi,ad4020 + - items: + - enum: + - adi,ad4021 + - adi,ad4022 + - const: adi,ad4020 + + - const: adi,adaq4001 + + - const: adi,adaq4003 + + reg: + maxItems: 1 + + spi-max-frequency: + maximum: 102040816 # for VIO > 2.7 V, 81300813 for VIO > 1.7 V + + adi,sdi-pin: + $ref: /schemas/types.yaml#/definitions/string + enum: [ high, low, cs, sdi ] + default: sdi + description: + Describes how the ADC SDI pin is wired. A value of "sdi" indicates that + the ADC SDI is connected to host SDO. "high" indicates that the ADC SDI + pin is hard-wired to logic high (VIO). "low" indicates that it is + hard-wired low (GND). "cs" indicates that the ADC SDI pin is connected to + the host CS line. + + '#daisy-chained-devices': true + + vdd-supply: + description: A 1.8V supply that powers the chip (VDD). + + vio-supply: + description: + A 1.8V to 5.5V supply for the digital inputs and outputs (VIO). + + ref-supply: + description: + A 2.5 to 5V supply for the external reference voltage (REF). + + cnv-gpios: + description: + When provided, this property indicates the GPIO that is connected to the + CNV pin. + maxItems: 1 + + adi,high-z-input: + type: boolean + description: + High-Z mode allows the amplifier and RC filter in front of the ADC to be + chosen based on the signal bandwidth of interest, rather than the settling + requirements of the switched capacitor SAR ADC inputs. + + adi,gain-milli: + description: | + The hardware gain applied to the ADC input (in milli units). + The gain provided by the ADC input scaler is defined by the hardware + connections between chip pins OUT+, R1K-, R1K1-, R1K+, R1K1+, and OUT-. + If not present, default to 1000 (no actual gain applied). + $ref: /schemas/types.yaml#/definitions/uint16 + enum: [454, 909, 1000, 1900] + default: 1000 + + interrupts: + description: + The SDO pin can also function as a busy indicator. This node should be + connected to an interrupt that is triggered when the SDO line goes low + while the SDI line is high and the CNV line is low ("3-wire" mode) or the + SDI line is low and the CNV line is high ("4-wire" mode); or when the SDO + line goes high while the SDI and CNV lines are high (chain mode), + maxItems: 1 + +required: + - compatible + - reg + - vdd-supply + - vio-supply + - ref-supply + +allOf: + # The configuration register can only be accessed if SDI is connected to MOSI + - if: + required: + - adi,sdi-pin + then: + properties: + adi,high-z-input: false + # chain mode has lower SCLK max rate + - if: + required: + - '#daisy-chained-devices' + then: + properties: + spi-max-frequency: + maximum: 50000000 # for VIO > 2.7 V, 40000000 for VIO > 1.7 V + # Gain property only applies to ADAQ devices + - if: + properties: + compatible: + not: + contains: + enum: + - adi,adaq4001 + - adi,adaq4003 + then: + properties: + adi,gain-milli: false + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + spi { + #address-cells = <1>; + #size-cells = <0>; + adc@0 { + compatible = "adi,ad4020"; + reg = <0>; + spi-max-frequency = <71000000>; + vdd-supply = <&supply_1_8V>; + vio-supply = <&supply_1_8V>; + ref-supply = <&supply_5V>; + adi,sdi-pin = "cs"; + cnv-gpios = <&gpio0 88 GPIO_ACTIVE_HIGH>; + }; + }; + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + adc@0 { + compatible = "adi,adaq4003"; + reg = <0>; + spi-max-frequency = <80000000>; + vdd-supply = <&supply_1_8V>; + vio-supply = <&supply_1_8V>; + ref-supply = <&supply_5V>; + adi,high-z-input; + adi,gain-milli = /bits/ 16 <454>; + }; + }; diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad4695.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad4695.yaml new file mode 100644 index 000000000000..310f046e139f --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad4695.yaml @@ -0,0 +1,254 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/adi,ad4695.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices Easy Drive Multiplexed SAR Analog to Digital Converters + +maintainers: + - Michael Hennerich <Michael.Hennerich@analog.com> + - Nuno Sá <nuno.sa@analog.com> + +description: | + A family of similar multi-channel analog to digital converters with SPI bus. + + * https://www.analog.com/en/products/ad4695.html + * https://www.analog.com/en/products/ad4696.html + * https://www.analog.com/en/products/ad4697.html + * https://www.analog.com/en/products/ad4698.html + +$ref: /schemas/spi/spi-peripheral-props.yaml# + +properties: + compatible: + enum: + - adi,ad4695 + - adi,ad4696 + - adi,ad4697 + - adi,ad4698 + + reg: + maxItems: 1 + + spi-max-frequency: + maximum: 80000000 + + spi-cpol: true + spi-cpha: true + + spi-rx-bus-width: + minimum: 1 + maximum: 4 + + avdd-supply: + description: Analog power supply. + + vio-supply: + description: I/O pin power supply. + + ldo-in-supply: + description: Internal LDO Input. Mutually exclusive with vdd-supply. + + vdd-supply: + description: Core power supply. Mutually exclusive with ldo-in-supply. + + ref-supply: + description: + External reference voltage. Mutually exclusive with refin-supply. + + refin-supply: + description: + Internal reference buffer input. Mutually exclusive with ref-supply. + + com-supply: + description: Common voltage supply for pseudo-differential analog inputs. + + adi,no-ref-current-limit: + $ref: /schemas/types.yaml#/definitions/flag + description: + When this flag is present, the REF Overvoltage Reduced Current protection + is disabled. + + adi,no-ref-high-z: + $ref: /schemas/types.yaml#/definitions/flag + description: + Enable this flag if the ref-supply requires Reference Input High-Z Mode + to be disabled for proper operation. + + cnv-gpios: + description: The Convert Input (CNV). If omitted, CNV is tied to SPI CS. + maxItems: 1 + + reset-gpios: + description: The Reset Input (RESET). Should be configured GPIO_ACTIVE_LOW. + maxItems: 1 + + interrupts: + minItems: 1 + items: + - description: Signal coming from the BSY_ALT_GP0 pin (ALERT or BUSY). + - description: Signal coming from the GP2 pin (ALERT). + - description: Signal coming from the GP3 pin (BUSY). + + interrupt-names: + minItems: 1 + items: + - const: gp0 + - const: gp2 + - const: gp3 + + gpio-controller: true + + "#gpio-cells": + const: 2 + description: | + The first cell is the GPn number: 0 to 3. + The second cell takes standard GPIO flags. + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + +patternProperties: + "^in(?:[13579]|1[135])-supply$": + description: + Optional voltage supply for odd numbered channels when they are used as + the negative input for a pseudo-differential channel. + + "^channel@[0-9a-f]$": + type: object + $ref: adc.yaml + unevaluatedProperties: false + description: + Describes each individual channel. In addition the properties defined + below, bipolar from adc.yaml is also supported. + + properties: + reg: + maximum: 15 + + common-mode-channel: + description: + Describes the common mode channel for single channels. 0xFF is REFGND + and OxFE is COM. Macros are available for these values in + dt-bindings/iio/adi,ad4695.h. Values 1 to 15 correspond to INx inputs. + Only odd numbered INx inputs can be used as common mode channels. + enum: [1, 3, 5, 7, 9, 11, 13, 15, 0xFE, 0xFF] + default: 0xFF + + adi,no-high-z: + $ref: /schemas/types.yaml#/definitions/flag + description: + Enable this flag if the input pin requires the Analog Input High-Z + Mode to be disabled for proper operation. + + required: + - reg + + allOf: + # bipolar mode can't be used with REFGND + - if: + properties: + common-mode-channel: + const: 0xFF + then: + properties: + bipolar: false + +required: + - compatible + - reg + - avdd-supply + - vio-supply + +allOf: + - oneOf: + - required: + - ldo-in-supply + - required: + - vdd-supply + + - oneOf: + - required: + - ref-supply + - required: + - refin-supply + + # the internal reference buffer always requires high-z mode + - if: + required: + - refin-supply + then: + properties: + adi,no-ref-high-z: false + + # limit channels for 8-channel chips + - if: + properties: + compatible: + contains: + enum: + - adi,ad4697 + - adi,ad4698 + then: + patternProperties: + "^in(?:9|1[135])-supply$": false + "^channel@[0-7]$": + properties: + reg: + maximum: 7 + common-mode-channel: + enum: [1, 3, 5, 7, 0xFE, 0xFF] + "^channel@[8-9a-f]$": false + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/iio/adi,ad4695.h> + + spi { + #address-cells = <1>; + #size-cells = <0>; + + adc@0 { + compatible = "adi,ad4695"; + reg = <0>; + spi-cpol; + spi-cpha; + spi-max-frequency = <80000000>; + avdd-supply = <&power_supply>; + ldo-in-supply = <&power_supply>; + vio-supply = <&io_supply>; + refin-supply = <&supply_5V>; + com-supply = <&supply_2V5>; + in3-supply = <&supply_2V5>; + reset-gpios = <&gpio 1 GPIO_ACTIVE_LOW>; + + #address-cells = <1>; + #size-cells = <0>; + + /* Pseudo-differential channel between IN0 and REFGND. */ + channel@0 { + reg = <0>; + }; + + /* Pseudo-differential channel between IN1 and COM. */ + channel@1 { + reg = <1>; + common-mode-channel = <AD4695_COMMON_MODE_COM>; + bipolar; + }; + + /* Pseudo-differential channel between IN2 and IN3. */ + channel@2 { + reg = <2>; + common-mode-channel = <3>; + bipolar; + }; + }; + }; diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml index 190889c7b62a..66dd1c549bd3 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml @@ -39,11 +39,21 @@ properties: clocks: maxItems: 1 - description: phandle to the master clock (mclk) + description: + Optionally, either a crystal can be attached externally between MCLK1 and + MCLK2 pins, or an external CMOS-compatible clock can drive the MCLK2 + pin. If absent, internal 4.92MHz clock is used, which can be made + available on MCLK2 pin. clock-names: - items: - - const: mclk + enum: + - xtal + - mclk + + "#clock-cells": + const: 0 + description: + If present when internal clock is used, configured as clock provider. interrupts: maxItems: 1 @@ -134,8 +144,6 @@ patternProperties: required: - compatible - reg - - clocks - - clock-names - interrupts - dvdd-supply - avdd-supply @@ -156,6 +164,18 @@ allOf: then: patternProperties: "^channel@[0-9a-f]+$": false + - if: + anyOf: + - required: + - clocks + - required: + - clock-names + then: + properties: + "#clock-cells": false + required: + - clocks + - clock-names unevaluatedProperties: false @@ -201,8 +221,7 @@ examples: spi-max-frequency = <1000000>; spi-cpol; spi-cpha; - clocks = <&ad7192_mclk>; - clock-names = "mclk"; + #clock-cells = <0>; interrupts = <25 0x2>; interrupt-parent = <&gpio>; aincom-supply = <&aincom>; diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml index 899b777017ce..bd19abb867d9 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml @@ -15,10 +15,17 @@ description: | * https://www.analog.com/en/products/ad7381.html * https://www.analog.com/en/products/ad7383.html * https://www.analog.com/en/products/ad7384.html + * https://www.analog.com/en/products/ad7386.html + * https://www.analog.com/en/products/ad7387.html + * https://www.analog.com/en/products/ad7388.html * https://www.analog.com/en/products/ad7380-4.html * https://www.analog.com/en/products/ad7381-4.html * https://www.analog.com/en/products/ad7383-4.html * https://www.analog.com/en/products/ad7384-4.html + * https://www.analog.com/en/products/ad7386-4.html + * https://www.analog.com/en/products/ad7387-4.html + * https://www.analog.com/en/products/ad7388-4.html + $ref: /schemas/spi/spi-peripheral-props.yaml# @@ -29,10 +36,16 @@ properties: - adi,ad7381 - adi,ad7383 - adi,ad7384 + - adi,ad7386 + - adi,ad7387 + - adi,ad7388 - adi,ad7380-4 - adi,ad7381-4 - adi,ad7383-4 - adi,ad7384-4 + - adi,ad7386-4 + - adi,ad7387-4 + - adi,ad7388-4 reg: maxItems: 1 diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml index 00fdaed11cbd..69408cae3db9 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml @@ -35,65 +35,83 @@ properties: avcc-supply: true + vdrive-supply: + description: + Determines the voltage level at which the interface logic pins will + operate. + + refin-supply: + description: + The voltage supply for optional external reference voltage. + interrupts: + description: + The BUSY pin falling edge indicates that the conversion is over, and thus + new data is available. maxItems: 1 adi,conversion-start-gpios: description: - Must be the device tree identifier of the CONVST pin. - This logic input is used to initiate conversions on the analog - input channels. As the line is active high, it should be marked - GPIO_ACTIVE_HIGH. - maxItems: 1 + Must be the device tree identifier of the CONVST pin(s). This logic input + is used to initiate conversions on the analog input channels. As the line + is active high, it should be marked GPIO_ACTIVE_HIGH. + minItems: 1 + maxItems: 2 reset-gpios: description: - Must be the device tree identifier of the RESET pin. If specified, - it will be asserted during driver probe. As the line is active high, - it should be marked GPIO_ACTIVE_HIGH. + Must be the device tree identifier of the RESET pin. If specified, it will + be asserted during driver probe. On the AD7606x, as the line is active + high, it should be marked GPIO_ACTIVE_HIGH. On the AD7616, as the line is + active low, it should be marked GPIO_ACTIVE_LOW. maxItems: 1 standby-gpios: description: - Must be the device tree identifier of the STBY pin. This pin is used - to place the AD7606 into one of two power-down modes, Standby mode or + Must be the device tree identifier of the STBY pin. This pin is used to + place the AD7606 into one of two power-down modes, Standby mode or Shutdown mode. As the line is active low, it should be marked GPIO_ACTIVE_LOW. maxItems: 1 adi,first-data-gpios: description: - Must be the device tree identifier of the FRSTDATA pin. - The FRSTDATA output indicates when the first channel, V1, is - being read back on either the parallel, byte or serial interface. - As the line is active high, it should be marked GPIO_ACTIVE_HIGH. + Must be the device tree identifier of the FRSTDATA pin. The FRSTDATA + output indicates when the first channel, V1, is being read back on either + the parallel, byte or serial interface. As the line is active high, it + should be marked GPIO_ACTIVE_HIGH. maxItems: 1 adi,range-gpios: description: - Must be the device tree identifier of the RANGE pin. The polarity on - this pin determines the input range of the analog input channels. If - this pin is tied to a logic high, the analog input range is ±10V for - all channels. If this pin is tied to a logic low, the analog input range + Must be the device tree identifier of the RANGE pin. The state on this + pin determines the input range of the analog input channels. If this pin + is tied to a logic high, the analog input range is ±10V for all channels. + On the AD760X, if this pin is tied to a logic low, the analog input range is ±5V for all channels. As the line is active high, it should be marked - GPIO_ACTIVE_HIGH. - maxItems: 1 + GPIO_ACTIVE_HIGH. On the AD7616, there are 2 pins, and if the 2 pins are + tied to a logic high, software mode is enabled, otherwise one of the 3 + possible range values is selected. + minItems: 1 + maxItems: 2 adi,oversampling-ratio-gpios: description: - Must be the device tree identifier of the over-sampling - mode pins. As the line is active high, it should be marked - GPIO_ACTIVE_HIGH. + Must be the device tree identifier of the over-sampling mode pins. As the + line is active high, it should be marked GPIO_ACTIVE_HIGH. On the AD7606X + parts that support it, if all 3 pins are tied to a logic high, software + mode is enabled. maxItems: 3 adi,sw-mode: description: - Software mode of operation, so far available only for ad7616 and ad7606b. - It is enabled when all three oversampling mode pins are connected to - high level. The device is configured by the corresponding registers. If the - adi,oversampling-ratio-gpios property is defined, then the driver will set the - oversampling gpios to high. Otherwise, it is assumed that the pins are hardwired - to VDD. + Software mode of operation, so far available only for AD7616 and AD7606B. + It is enabled when all three oversampling mode pins are connected to high + level for the AD7606B, or both the range selection are connected to high + level for the AD7616. The device is configured by the corresponding + registers. If the adi,oversampling-ratio-gpios property is defined, then + the driver will set the oversampling gpios to high. Otherwise, it is + assumed that the pins are hardwired to VDD. type: boolean required: @@ -101,12 +119,57 @@ required: - reg - spi-cpha - avcc-supply + - vdrive-supply - interrupts - adi,conversion-start-gpios allOf: - $ref: /schemas/spi/spi-peripheral-props.yaml# + - if: + properties: + compatible: + contains: + const: adi,ad7616 + then: + properties: + adi,first-data-gpios: false + standby-gpios: false + adi,range-gpios: + maxItems: 2 + else: + properties: + adi,range-gpios: + maxItems: 1 + + - if: + properties: + compatible: + contains: + enum: + - adi,ad7605-4 + - adi,ad7616 + then: + properties: + adi,oversampling-ratio-gpios: false + + - if: + properties: + compatible: + contains: + enum: + - adi,ad7605-4 + - adi,ad7606-4 + - adi,ad7606-6 + - adi,ad7606-8 + then: + properties: + adi,sw-mode: false + else: + properties: + adi,conversion-start-gpios: + maxItems: 1 + unevaluatedProperties: false examples: @@ -125,6 +188,7 @@ examples: spi-cpha; avcc-supply = <&adc_vref>; + vdrive-supply = <&vdd_supply>; interrupts = <25 IRQ_TYPE_EDGE_FALLING>; interrupt-parent = <&gpio>; @@ -136,7 +200,6 @@ examples: <&gpio 23 GPIO_ACTIVE_HIGH>, <&gpio 26 GPIO_ACTIVE_HIGH>; standby-gpios = <&gpio 24 GPIO_ACTIVE_LOW>; - adi,sw-mode; }; }; ... diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad9467.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad9467.yaml index eecd5fbab695..2606c0c5dfc6 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad9467.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad9467.yaml @@ -28,6 +28,9 @@ properties: - adi,ad9265 - adi,ad9434 - adi,ad9467 + - adi,ad9643 + - adi,ad9649 + - adi,ad9652 reg: maxItems: 1 diff --git a/Documentation/devicetree/bindings/iio/adc/microchip,pac1921.yaml b/Documentation/devicetree/bindings/iio/adc/microchip,pac1921.yaml new file mode 100644 index 000000000000..12e56b1b3d3f --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/microchip,pac1921.yaml @@ -0,0 +1,71 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/microchip,pac1921.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Microchip PAC1921 High-Side Power/Current Monitor with Anaog Output + +maintainers: + - Matteo Martelli <matteomartelli3@gmail.com> + +description: | + The PAC1921 is a power/current monitoring device with an analog output + and I2C/SMBus interface. + + Datasheet can be found here: + https://ww1.microchip.com/downloads/en/DeviceDoc/PAC1921-Data-Sheet-DS20005293E.pdf + +properties: + compatible: + const: microchip,pac1921 + + reg: + maxItems: 1 + + vdd-supply: true + + "#io-channel-cells": + const: 1 + + shunt-resistor-micro-ohms: + description: + Value in micro Ohms of the shunt resistor connected between + the SENSE+ and SENSE- inputs, across which the current is measured. + Value is needed to compute the scaling of the measured current. + + label: + description: Unique name to identify which device this is. + + read-integrate-gpios: + description: + READ/INT input pin to control the current state of the device, either in + the INTEGRATE state when driven high, or in the READ state when driven low. + When not connected the pin is floating and it can be overridden by the + INT_EN register bit after asserting the READ/INT_OVR register bit. + maxItems: 1 + +required: + - compatible + - reg + - vdd-supply + - shunt-resistor-micro-ohms + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + adc@4c { + compatible = "microchip,pac1921"; + reg = <0x4c>; + vdd-supply = <&vdd>; + #io-channel-cells = <1>; + label = "vbat"; + shunt-resistor-micro-ohms = <10000>; + }; + }; +... diff --git a/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.yaml b/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.yaml index aa24b841393c..fd93ed3991e0 100644 --- a/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.yaml +++ b/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.yaml @@ -17,6 +17,9 @@ properties: - const: rockchip,rk3399-saradc - const: rockchip,rk3588-saradc - items: + - const: rockchip,rk3576-saradc + - const: rockchip,rk3588-saradc + - items: - enum: - rockchip,px30-saradc - rockchip,rk3308-saradc diff --git a/Documentation/devicetree/bindings/iio/adc/sigma-delta-modulator.yaml b/Documentation/devicetree/bindings/iio/adc/sigma-delta-modulator.yaml index cab0d425eaa4..c3a116427dc3 100644 --- a/Documentation/devicetree/bindings/iio/adc/sigma-delta-modulator.yaml +++ b/Documentation/devicetree/bindings/iio/adc/sigma-delta-modulator.yaml @@ -18,18 +18,39 @@ properties: - sd-modulator - ads1201 + '#io-backend-cells': + const: 0 + '#io-channel-cells': const: 0 + vref-supply: + description: Phandle to the vref input analog reference voltage. + +dependencies: + vref-supply: [ '#io-backend-cells' ] + required: - compatible - - '#io-channel-cells' + +anyOf: + - required: ['#io-backend-cells'] + - required: ['#io-channel-cells'] additionalProperties: false examples: - | - ads1202: adc { + // Backend binding example. SD modulator configured as an IIO backend device + ads1201_0: adc { + compatible = "sd-modulator"; + vref-supply = <&vdd_adc>; + #io-backend-cells = <0>; + }; + + - | + // Legacy binding example. SD modulator configured as an IIO channel provider + ads1201_1: adc { compatible = "sd-modulator"; #io-channel-cells = <0>; }; diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml index ec34c48d4878..ef9dcc365eab 100644 --- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml +++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml @@ -54,7 +54,9 @@ properties: It's not present on stm32f4. It's required on stm32h7 and stm32mp1. - clock-names: true + clock-names: + minItems: 1 + maxItems: 2 st,max-clk-rate-hz: description: diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml b/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml index 2722edab1d9a..c24ac98bbb3d 100644 --- a/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml +++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml @@ -102,9 +102,11 @@ patternProperties: items: minimum: 0 maximum: 7 + deprecated: true st,adc-channel-names: description: List of single-ended channel names. + deprecated: true st,filter-order: description: | @@ -118,6 +120,12 @@ patternProperties: "#io-channel-cells": const: 1 + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + st,adc-channel-types: description: | Single-ended channel input type. @@ -128,6 +136,7 @@ patternProperties: items: enum: [ SPI_R, SPI_F, MANCH_R, MANCH_F ] $ref: /schemas/types.yaml#/definitions/non-unique-string-array + deprecated: true st,adc-channel-clk-src: description: | @@ -139,6 +148,7 @@ patternProperties: items: enum: [ CLKIN, CLKOUT, CLKOUT_F, CLKOUT_R ] $ref: /schemas/types.yaml#/definitions/non-unique-string-array + deprecated: true st,adc-alt-channel: description: @@ -147,6 +157,7 @@ patternProperties: If not set, channel n is connected to SPI input n. If set, channel n is connected to SPI input n + 1. type: boolean + deprecated: true st,filter0-sync: description: @@ -165,11 +176,60 @@ patternProperties: - compatible - reg - interrupts - - st,adc-channels - - st,adc-channel-names - st,filter-order - "#io-channel-cells" + patternProperties: + "^channel@[0-7]$": + type: object + $ref: adc.yaml + unevaluatedProperties: false + description: Represents the external channels which are connected to the DFSDM. + + properties: + reg: + maximum: 7 + + label: + description: + Unique name to identify which channel this is. + + st,adc-channel-type: + description: | + Single-ended channel input type. + - "SPI_R": SPI with data on rising edge (default) + - "SPI_F": SPI with data on falling edge + - "MANCH_R": manchester codec, rising edge = logic 0, falling edge = logic 1 + - "MANCH_F": manchester codec, rising edge = logic 1, falling edge = logic 0 + $ref: /schemas/types.yaml#/definitions/string + enum: [ SPI_R, SPI_F, MANCH_R, MANCH_F ] + + st,adc-channel-clk-src: + description: | + Conversion clock source. + - "CLKIN": external SPI clock (CLKIN x) + - "CLKOUT": internal SPI clock (CLKOUT) (default) + - "CLKOUT_F": internal SPI clock divided by 2 (falling edge). + - "CLKOUT_R": internal SPI clock divided by 2 (rising edge). + $ref: /schemas/types.yaml#/definitions/string + enum: [ CLKIN, CLKOUT, CLKOUT_F, CLKOUT_R ] + + st,adc-alt-channel: + description: + Must be defined if two sigma delta modulators are + connected on same SPI input. + If not set, channel n is connected to SPI input n. + If set, channel n is connected to SPI input n + 1. + type: boolean + + io-backends: + description: + Used to pipe external sigma delta modulator or internal ADC backend to DFSDM channel. + maxItems: 1 + + required: + - reg + allOf: - if: properties: @@ -199,9 +259,19 @@ patternProperties: description: From common IIO binding. Used to pipe external sigma delta modulator or internal ADC output to DFSDM channel. + deprecated: true - required: - - io-channels + if: + required: + - st,adc-channels + then: + required: + - io-channels + + patternProperties: + "^channel@[0-7]$": + required: + - io-backends - if: properties: @@ -298,6 +368,7 @@ examples: #address-cells = <1>; #size-cells = <0>; + // Example 1: Audio use case with generic binding dfsdm0: filter@0 { compatible = "st,stm32-dfsdm-dmic"; reg = <0>; @@ -305,12 +376,18 @@ examples: dmas = <&dmamux1 101 0x400 0x01>; dma-names = "rx"; #io-channel-cells = <1>; - st,adc-channels = <1>; - st,adc-channel-names = "dmic0"; - st,adc-channel-types = "SPI_R"; - st,adc-channel-clk-src = "CLKOUT"; + #address-cells = <1>; + #size-cells = <0>; st,filter-order = <5>; + channel@1 { + reg = <1>; + label = "dmic0"; + st,adc-channel-type = "SPI_R"; + st,adc-channel-clk-src = "CLKOUT"; + st,adc-alt-channel; + }; + asoc_pdm0: dfsdm-dai { compatible = "st,stm32h7-dfsdm-dai"; #sound-dai-cells = <0>; @@ -318,19 +395,34 @@ examples: }; }; - dfsdm_pdm1: filter@1 { + // Example 2: Analog use case with generic binding + dfsdm1: filter@1 { compatible = "st,stm32-dfsdm-adc"; reg = <1>; interrupts = <GIC_SPI 111 IRQ_TYPE_LEVEL_HIGH>; dmas = <&dmamux1 102 0x400 0x01>; dma-names = "rx"; - #io-channel-cells = <1>; - st,adc-channels = <2 3>; - st,adc-channel-names = "in2", "in3"; - st,adc-channel-types = "SPI_R", "SPI_R"; - st,adc-channel-clk-src = "CLKOUT_F", "CLKOUT_F"; - io-channels = <&sd_adc2 &sd_adc3>; st,filter-order = <1>; + #io-channel-cells = <1>; + #address-cells = <1>; + #size-cells = <0>; + + channel@2 { + reg = <2>; + label = "in2"; + st,adc-channel-type = "SPI_F"; + st,adc-channel-clk-src = "CLKOUT"; + st,adc-alt-channel; + io-backends = <&sd_adc2>; + }; + + channel@3 { + reg = <3>; + label = "in3"; + st,adc-channel-type = "SPI_R"; + st,adc-channel-clk-src = "CLKOUT"; + io-backends = <&sd_adc3>; + }; }; }; diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ltc2664.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ltc2664.yaml new file mode 100644 index 000000000000..33490853497b --- /dev/null +++ b/Documentation/devicetree/bindings/iio/dac/adi,ltc2664.yaml @@ -0,0 +1,181 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/dac/adi,ltc2664.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices LTC2664 DAC + +maintainers: + - Michael Hennerich <michael.hennerich@analog.com> + - Kim Seer Paller <kimseer.paller@analog.com> + +description: | + Analog Devices LTC2664 4 channel, 12-/16-Bit, +-10V DAC + https://www.analog.com/media/en/technical-documentation/data-sheets/2664fa.pdf + +properties: + compatible: + enum: + - adi,ltc2664 + + reg: + maxItems: 1 + + spi-max-frequency: + maximum: 50000000 + + vcc-supply: + description: Analog Supply Voltage Input. + + v-pos-supply: + description: Positive Supply Voltage Input. + + v-neg-supply: + description: Negative Supply Voltage Input. + + iovcc-supply: + description: Digital Input/Output Supply Voltage. + + ref-supply: + description: + Reference Input/Output. The voltage at the REF pin sets the full-scale + range of all channels. If not provided the internal reference is used and + also provided on the VREF pin. + + reset-gpios: + description: + Active-low Asynchronous Clear Input. A logic low at this level-triggered + input clears the part to the reset code and range determined by the + hardwired option chosen using the MSPAN pins. The control registers are + cleared to zero. + maxItems: 1 + + adi,manual-span-operation-config: + description: + This property must mimic the MSPAN pin configurations. By tying the MSPAN + pins (MSP2, MSP1 and MSP0) to GND and/or VCC, any output range can be + hardware-configured with different mid-scale or zero-scale reset options. + The hardware configuration is latched during power on reset for proper + operation. + 0 - MPS2=GND, MPS1=GND, MSP0=GND (+-10V, reset to 0V) + 1 - MPS2=GND, MPS1=GND, MSP0=VCC (+-5V, reset to 0V) + 2 - MPS2=GND, MPS1=VCC, MSP0=GND (+-2.5V, reset to 0V) + 3 - MPS2=GND, MPS1=VCC, MSP0=VCC (0V to 10, reset to 0V) + 4 - MPS2=VCC, MPS1=GND, MSP0=GND (0V to 10V, reset to 5V) + 5 - MPS2=VCC, MPS1=GND, MSP0=VCC (0V to 5V, reset to 0V) + 6 - MPS2=VCC, MPS1=VCC, MSP0=GND (0V to 5V, reset to 2.5V) + 7 - MPS2=VCC, MPS1=VCC, MSP0=VCC (0V to 5V, reset to 0V, enables SoftSpan) + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1, 2, 3, 4, 5, 6, 7] + default: 7 + + io-channels: + description: + ADC channel to monitor voltages and temperature at the MUXOUT pin. + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + +patternProperties: + "^channel@[0-3]$": + $ref: dac.yaml + type: object + additionalProperties: false + + properties: + reg: + description: The channel number representing the DAC output channel. + maximum: 3 + + adi,toggle-mode: + description: + Set the channel as a toggle enabled channel. Toggle operation enables + fast switching of a DAC output between two different DAC codes without + any SPI transaction. + type: boolean + + output-range-microvolt: + description: + This property is only allowed when SoftSpan is enabled. If not present, + [0, 5000000] is the default output range. + oneOf: + - items: + - const: 0 + - enum: [5000000, 10000000] + - items: + - const: -5000000 + - const: 5000000 + - items: + - const: -10000000 + - const: 10000000 + - items: + - const: -2500000 + - const: 2500000 + + required: + - reg + + allOf: + - if: + not: + properties: + adi,manual-span-operation-config: + const: 7 + then: + patternProperties: + "^channel@[0-3]$": + properties: + output-range-microvolt: false + +required: + - compatible + - reg + - spi-max-frequency + - vcc-supply + - iovcc-supply + - v-pos-supply + - v-neg-supply + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +additionalProperties: false + +examples: + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + dac@0 { + compatible = "adi,ltc2664"; + reg = <0>; + spi-max-frequency = <10000000>; + + vcc-supply = <&vcc>; + iovcc-supply = <&vcc>; + ref-supply = <&vref>; + v-pos-supply = <&vpos>; + v-neg-supply = <&vneg>; + + io-channels = <&adc 0>; + + #address-cells = <1>; + #size-cells = <0>; + channel@0 { + reg = <0>; + adi,toggle-mode; + output-range-microvolt = <(-10000000) 10000000>; + }; + + channel@1 { + reg = <1>; + output-range-microvolt= <0 10000000>; + }; + }; + }; +... diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ltc2672.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ltc2672.yaml new file mode 100644 index 000000000000..c8c434c10643 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/dac/adi,ltc2672.yaml @@ -0,0 +1,160 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/dac/adi,ltc2672.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices LTC2672 DAC + +maintainers: + - Michael Hennerich <michael.hennerich@analog.com> + - Kim Seer Paller <kimseer.paller@analog.com> + +description: | + Analog Devices LTC2672 5 channel, 12-/16-Bit, 300mA DAC + https://www.analog.com/media/en/technical-documentation/data-sheets/ltc2672.pdf + +properties: + compatible: + enum: + - adi,ltc2672 + + reg: + maxItems: 1 + + spi-max-frequency: + maximum: 50000000 + + vcc-supply: + description: Analog Supply Voltage Input. + + v-neg-supply: + description: Negative Supply Voltage Input. + + vdd0-supply: + description: Positive Supply Voltage Input for DAC OUT0. + + vdd1-supply: + description: Positive Supply Voltage Input for DAC OUT1. + + vdd2-supply: + description: Positive Supply Voltage Input for DAC OUT2. + + vdd3-supply: + description: Positive Supply Voltage Input for DAC OUT3. + + vdd4-supply: + description: Positive Supply Voltage Input for DAC OUT4. + + iovcc-supply: + description: Digital Input/Output Supply Voltage. + + ref-supply: + description: + Reference Input/Output. The voltage at the REF pin sets the full-scale + range of all channels. If not provided the internal reference is used and + also provided on the VREF pin. + + reset-gpios: + description: + Active Low Asynchronous Clear Input. A logic low at this level triggered + input clears the device to the default reset code and output range, which + is zero-scale with the outputs off. The control registers are cleared to + zero. + maxItems: 1 + + adi,rfsadj-ohms: + description: + If FSADJ is tied to VCC, an internal RFSADJ (20 kΩ) is selected, which + results in nominal output ranges. When an external resistor of 19 kΩ to + 41 kΩ can be used instead by connecting the resistor between FSADJ and GND + it controls the scaling of the ranges, and the internal resistor is + automatically disconnected. + minimum: 19000 + maximum: 41000 + default: 20000 + + io-channels: + description: + ADC channel to monitor voltages and currents at the MUX pin. + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + +patternProperties: + "^channel@[0-4]$": + $ref: dac.yaml + type: object + additionalProperties: false + + properties: + reg: + description: The channel number representing the DAC output channel. + maximum: 4 + + adi,toggle-mode: + description: + Set the channel as a toggle enabled channel. Toggle operation enables + fast switching of a DAC output between two different DAC codes without + any SPI transaction. + type: boolean + + output-range-microamp: + items: + - const: 0 + - enum: [3125000, 6250000, 12500000, 25000000, 50000000, 100000000, + 200000000, 300000000] + + required: + - reg + - output-range-microamp + +required: + - compatible + - reg + - spi-max-frequency + - vcc-supply + - iovcc-supply + - v-neg-supply + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +additionalProperties: false + +examples: + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + dac@0 { + compatible = "adi,ltc2672"; + reg = <0>; + spi-max-frequency = <10000000>; + + vcc-supply = <&vcc>; + iovcc-supply = <&vcc>; + ref-supply = <&vref>; + v-neg-supply = <&vneg>; + + io-channels = <&adc 0>; + + #address-cells = <1>; + #size-cells = <0>; + channel@0 { + reg = <0>; + adi,toggle-mode; + output-range-microamp = <0 3125000>; + }; + + channel@1 { + reg = <1>; + output-range-microamp = <0 6250000>; + }; + }; + }; +... diff --git a/Documentation/devicetree/bindings/iio/dac/dac.yaml b/Documentation/devicetree/bindings/iio/dac/dac.yaml new file mode 100644 index 000000000000..daa40724e1cf --- /dev/null +++ b/Documentation/devicetree/bindings/iio/dac/dac.yaml @@ -0,0 +1,50 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/dac/dac.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: IIO Common Properties for DAC Channels + +maintainers: + - Jonathan Cameron <jic23@kernel.org> + +description: + A few properties are defined in a common way for DAC channels. + +properties: + $nodename: + pattern: "^channel(@[0-9a-f]+)?$" + description: + A channel index should match reg. + + reg: + maxItems: 1 + + label: + description: Unique name to identify which channel this is. + + output-range-microamp: + maxItems: 2 + minItems: 2 + description: + Specify the channel output full scale range in microamperes. + + output-range-microvolt: + maxItems: 2 + minItems: 2 + description: + Specify the channel output full scale range in microvolts. + +anyOf: + - oneOf: + - required: + - reg + - output-range-microamp + - required: + - reg + - output-range-microvolt + - required: + - reg + +additionalProperties: true diff --git a/Documentation/devicetree/bindings/iio/frequency/adi,adf4377.yaml b/Documentation/devicetree/bindings/iio/frequency/adi,adf4377.yaml index aa6a3193b4e0..5f950ee9aec7 100644 --- a/Documentation/devicetree/bindings/iio/frequency/adi,adf4377.yaml +++ b/Documentation/devicetree/bindings/iio/frequency/adi,adf4377.yaml @@ -17,6 +17,7 @@ description: | applications. https://www.analog.com/en/products/adf4377.html + https://www.analog.com/en/products/adf4378.html properties: compatible: @@ -73,6 +74,15 @@ required: allOf: - $ref: /schemas/spi/spi-peripheral-props.yaml# + - if: + properties: + compatible: + contains: + enum: + - adi,adf4378 + then: + properties: + clk2-enable-gpios: false unevaluatedProperties: false diff --git a/Documentation/devicetree/bindings/iio/humidity/sciosense,ens210.yaml b/Documentation/devicetree/bindings/iio/humidity/sciosense,ens210.yaml new file mode 100644 index 000000000000..ed0ea938f7f8 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/humidity/sciosense,ens210.yaml @@ -0,0 +1,55 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/humidity/sciosense,ens210.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ScioSense ENS210 temperature and humidity sensor + +maintainers: + - Joshua Felmeden <jfelmeden@thegoodpenguin.co.uk> + +description: | + Temperature and Humidity sensor. + + Datasheet: + https://www.sciosense.com/wp-content/uploads/2024/04/ENS21x-Datasheet.pdf + https://www.sciosense.com/wp-content/uploads/2023/12/ENS210-Datasheet.pdf + +properties: + compatible: + oneOf: + - items: + - enum: + - sciosense,ens210a + - sciosense,ens211 + - sciosense,ens212 + - sciosense,ens213a + - sciosense,ens215 + - const: sciosense,ens210 + - const: sciosense,ens210 + + reg: + maxItems: 1 + + vdd-supply: true + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + temperature-sensor@43 { + compatible = "sciosense,ens210"; + reg = <0x43>; + }; + }; +... + diff --git a/Documentation/devicetree/bindings/iio/light/liteon,ltrf216a.yaml b/Documentation/devicetree/bindings/iio/light/liteon,ltrf216a.yaml index 7de1b0e721ca..877e955d4ebd 100644 --- a/Documentation/devicetree/bindings/iio/light/liteon,ltrf216a.yaml +++ b/Documentation/devicetree/bindings/iio/light/liteon,ltrf216a.yaml @@ -14,7 +14,9 @@ description: properties: compatible: - const: liteon,ltrf216a + enum: + - liteon,ltr308 + - liteon,ltrf216a reg: maxItems: 1 diff --git a/Documentation/devicetree/bindings/iio/light/rohm,bh1745.yaml b/Documentation/devicetree/bindings/iio/light/rohm,bh1745.yaml new file mode 100644 index 000000000000..44896795c67e --- /dev/null +++ b/Documentation/devicetree/bindings/iio/light/rohm,bh1745.yaml @@ -0,0 +1,53 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/light/rohm,bh1745.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ROHM BH1745 colour sensor + +maintainers: + - Mudit Sharma <muditsharma.info@gmail.com> + +description: + BH1745 is an I2C colour sensor with red, green, blue and clear + channels. It has a programmable active low interrupt pin. + Interrupt occurs when the signal from the selected interrupt + source channel crosses set interrupt threshold high/low level. + +properties: + compatible: + const: rohm,bh1745 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + vdd-supply: true + +required: + - compatible + - reg + - vdd-supply + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + i2c { + #address-cells = <1>; + #size-cells = <0>; + + colour-sensor@38 { + compatible = "rohm,bh1745"; + reg = <0x38>; + interrupt-parent = <&gpio>; + interrupts = <19 IRQ_TYPE_LEVEL_LOW>; + vdd-supply = <&vdd>; + }; + }; + +... diff --git a/Documentation/devicetree/bindings/iio/light/rohm,bu27034.yaml b/Documentation/devicetree/bindings/iio/light/rohm,bu27034anuc.yaml index 30a109a1bf3b..29c90ca5b258 100644 --- a/Documentation/devicetree/bindings/iio/light/rohm,bu27034.yaml +++ b/Documentation/devicetree/bindings/iio/light/rohm,bu27034anuc.yaml @@ -1,23 +1,22 @@ # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) %YAML 1.2 --- -$id: http://devicetree.org/schemas/iio/light/rohm,bu27034.yaml# +$id: http://devicetree.org/schemas/iio/light/rohm,bu27034anuc.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# -title: ROHM BU27034 ambient light sensor +title: ROHM BU27034ANUC ambient light sensor maintainers: - Matti Vaittinen <mazziesaccount@gmail.com> description: | - ROHM BU27034 is an ambient light sesnor with 3 channels and 3 photo diodes + ROHM BU27034ANUC is an ambient light sensor with 2 channels and 2 photo diodes capable of detecting a very wide range of illuminance. Typical application is adjusting LCD and backlight power of TVs and mobile phones. - https://fscdn.rohm.com/en/products/databook/datasheet/ic/sensor/light/bu27034nuc-e.pdf properties: compatible: - const: rohm,bu27034 + const: rohm,bu27034anuc reg: maxItems: 1 @@ -37,7 +36,7 @@ examples: #size-cells = <0>; light-sensor@38 { - compatible = "rohm,bu27034"; + compatible = "rohm,bu27034anuc"; reg = <0x38>; vdd-supply = <&vdd>; }; diff --git a/Documentation/devicetree/bindings/iio/light/stk33xx.yaml b/Documentation/devicetree/bindings/iio/light/stk33xx.yaml index f6e22dc9814a..e4341fdced98 100644 --- a/Documentation/devicetree/bindings/iio/light/stk33xx.yaml +++ b/Documentation/devicetree/bindings/iio/light/stk33xx.yaml @@ -18,10 +18,15 @@ allOf: properties: compatible: - enum: - - sensortek,stk3310 - - sensortek,stk3311 - - sensortek,stk3335 + oneOf: + - enum: + - sensortek,stk3310 + - sensortek,stk3311 + - sensortek,stk3335 + - items: + - enum: + - sensortek,stk3013 + - const: sensortek,stk3310 reg: maxItems: 1 diff --git a/Documentation/devicetree/bindings/iio/magnetometer/asahi-kasei,ak8975.yaml b/Documentation/devicetree/bindings/iio/magnetometer/asahi-kasei,ak8975.yaml index 9790f75fc669..fe5145d3b73c 100644 --- a/Documentation/devicetree/bindings/iio/magnetometer/asahi-kasei,ak8975.yaml +++ b/Documentation/devicetree/bindings/iio/magnetometer/asahi-kasei,ak8975.yaml @@ -23,7 +23,6 @@ properties: - ak8963 - ak09911 - ak09912 - - ak09916 deprecated: true reg: diff --git a/Documentation/devicetree/bindings/iio/magnetometer/bosch,bmc150_magn.yaml b/Documentation/devicetree/bindings/iio/magnetometer/bosch,bmc150_magn.yaml index 2867ab6bf9b0..a3838ab0c524 100644 --- a/Documentation/devicetree/bindings/iio/magnetometer/bosch,bmc150_magn.yaml +++ b/Documentation/devicetree/bindings/iio/magnetometer/bosch,bmc150_magn.yaml @@ -36,6 +36,9 @@ properties: interrupts: maxItems: 1 + mount-matrix: + description: an optional 3x3 mounting rotation matrix. + additionalProperties: false required: diff --git a/Documentation/devicetree/bindings/iio/pressure/sensirion,sdp500.yaml b/Documentation/devicetree/bindings/iio/pressure/sensirion,sdp500.yaml new file mode 100644 index 000000000000..813239f6879a --- /dev/null +++ b/Documentation/devicetree/bindings/iio/pressure/sensirion,sdp500.yaml @@ -0,0 +1,46 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/pressure/sensirion,sdp500.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: sdp500/sdp510 pressure sensor with I2C bus interface + +maintainers: + - Petar Stoykov <petar.stoykov@prodrive-technologies.com> + +description: | + Pressure sensor from Sensirion with I2C bus interface. + There is no software difference between sdp500 and sdp510. + +properties: + compatible: + oneOf: + - items: + - const: sensirion,sdp510 + - const: sensirion,sdp500 + - const: sensirion,sdp500 + + reg: + maxItems: 1 + + vdd-supply: true + +required: + - compatible + - reg + - vdd-supply + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + pressure@40 { + compatible = "sensirion,sdp500"; + reg = <0x40>; + vdd-supply = <&foo>; + }; + }; diff --git a/Documentation/devicetree/bindings/iio/proximity/tyhx,hx9023s.yaml b/Documentation/devicetree/bindings/iio/proximity/tyhx,hx9023s.yaml new file mode 100644 index 000000000000..64ce8bc8bd36 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/proximity/tyhx,hx9023s.yaml @@ -0,0 +1,93 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/proximity/tyhx,hx9023s.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: TYHX HX9023S capacitive proximity sensor + +maintainers: + - Yasin Lee <yasin.lee.x@gmail.com> + +description: | + TYHX HX9023S proximity sensor. Datasheet can be found here: + http://www.tianyihexin.com/ueditor/php/upload/file/20240614/1718336303992081.pdf + +properties: + compatible: + const: tyhx,hx9023s + + reg: + maxItems: 1 + + interrupts: + description: + Generated by device to announce preceding read request has finished + and data is available or that a close/far proximity event has happened. + maxItems: 1 + + vdd-supply: true + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + +patternProperties: + "^channel@[0-4]$": + $ref: /schemas/iio/adc/adc.yaml + type: object + unevaluatedProperties: false + + properties: + reg: + minimum: 0 + maximum: 4 + description: The channel number. + +required: + - compatible + - reg + - vdd-supply + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + i2c { + #address-cells = <1>; + #size-cells = <0>; + proximity@2a { + compatible = "tyhx,hx9023s"; + reg = <0x2a>; + interrupt-parent = <&pio>; + interrupts = <16 IRQ_TYPE_EDGE_FALLING>; + vdd-supply = <&pp1800_prox>; + + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0>; + single-channel = <0>; + }; + channel@1 { + reg = <1>; + single-channel = <1>; + }; + channel@2 { + reg = <2>; + single-channel = <2>; + }; + channel@3 { + reg = <3>; + diff-channels = <1 0>; + }; + channel@4 { + reg = <4>; + diff-channels = <2 0>; + }; + }; + }; diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml index a70ce43b3dc0..62ceb60545cd 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml @@ -1535,6 +1535,8 @@ patternProperties: description: Turing Machines, Inc. "^tyan,.*": description: Tyan Computer Corporation + "^tyhx,.*": + description: NanjingTianyihexin Electronics Ltd. "^u-blox,.*": description: u-blox "^u-boot,.*": diff --git a/Documentation/iio/ad4000.rst b/Documentation/iio/ad4000.rst new file mode 100644 index 000000000000..de8fd3ae6e62 --- /dev/null +++ b/Documentation/iio/ad4000.rst @@ -0,0 +1,131 @@ +.. SPDX-License-Identifier: GPL-2.0-only + +============= +AD4000 driver +============= + +Device driver for Analog Devices Inc. AD4000 series of ADCs. + +Supported devices +================= + +* `AD4000 <https://www.analog.com/AD4000>`_ +* `AD4001 <https://www.analog.com/AD4001>`_ +* `AD4002 <https://www.analog.com/AD4002>`_ +* `AD4003 <https://www.analog.com/AD4003>`_ +* `AD4004 <https://www.analog.com/AD4004>`_ +* `AD4005 <https://www.analog.com/AD4005>`_ +* `AD4006 <https://www.analog.com/AD4006>`_ +* `AD4007 <https://www.analog.com/AD4007>`_ +* `AD4008 <https://www.analog.com/AD4008>`_ +* `AD4010 <https://www.analog.com/AD4010>`_ +* `AD4011 <https://www.analog.com/AD4011>`_ +* `AD4020 <https://www.analog.com/AD4020>`_ +* `AD4021 <https://www.analog.com/AD4021>`_ +* `AD4022 <https://www.analog.com/AD4022>`_ +* `ADAQ4001 <https://www.analog.com/ADAQ4001>`_ +* `ADAQ4003 <https://www.analog.com/ADAQ4003>`_ + +Wiring connections +------------------ + +Devices of the AD4000 series can be connected to the SPI host controller in a +few different modes. + +CS mode, 3-wire turbo mode +^^^^^^^^^^^^^^^^^^^^^^^^^^ + +Datasheet "3-wire" mode is what most resembles standard SPI connection which, +for these devices, comprises of connecting the controller CS line to device CNV +pin and other SPI lines as usual. This configuration is (misleadingly) called +"CS Mode, 3-Wire Turbo Mode" connection in datasheets. +NOTE: The datasheet definition of 3-wire mode for the AD4000 series is NOT the +same of standard spi-3wire mode. +This is the only connection mode that allows configuration register access but +it requires the SPI controller to support the ``SPI_MOSI_IDLE_HIGH`` feature. + +Omit the ``adi,sdi-pin`` property in device tree to select this mode. + +:: + + +-------------+ + + ----------------------------------| SDO | + | | | + | +-------------------| CS | + | v | | + | +--------------------+ | HOST | + | | CNV | | | + +--->| SDI AD4000 SDO |-------->| SDI | + | SCK | | | + +--------------------+ | | + ^ | | + +--------------------| SCLK | + +-------------+ + +CS mode, 3-wire, without busy indicator +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +Another wiring configuration supported as "3-wire" mode has the SDI pin +hard-wired to digital input/output interface supply (VIO). In this setup, the +controller is not required to support ``SPI_MOSI_IDLE_HIGH`` but register access +is not possible. This connection mode saves one wire and works with any SPI +controller. + +Set the ``adi,sdi-pin`` device tree property to ``"high"`` to select this mode. + +:: + + +-------------+ + +--------------------| CS | + v | | + VIO +--------------------+ | HOST | + | | CNV | | | + +--->| SDI AD4000 SDO |-------->| SDI | + | SCK | | | + +--------------------+ | | + ^ | | + +--------------------| SCLK | + +-------------+ + +Alternatively, a GPIO may be connected to the device CNV pin. This is similar to +the previous wiring configuration but saves the use of a CS line. + +:: + + +-------------+ + +--------------------| GPIO | + v | | + VIO +--------------------+ | HOST | + | | CNV | | | + +--->| SDI AD4000 SDO |-------->| SDI | + | SCK | | | + +--------------------+ | | + ^ | | + +--------------------| SCLK | + +-------------+ + +CS mode, 4-wire without busy indicator +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +In datasheet "4-wire" mode, the controller CS line is connected to the ADC SDI +pin and a GPIO is connected to the ADC CNV pin. This connection mode may better +suit scenarios where multiple ADCs can share one CNV trigger. + +Set ``adi,sdi-pin`` to ``"cs"`` to select this mode. + + +:: + + +-------------+ + + ----------------------------------| CS | + | | | + | +-------------------| GPIO | + | v | | + | +--------------------+ | HOST | + | | CNV | | | + +--->| SDI AD4000 SDO |-------->| SDI | + | SCK | | | + +--------------------+ | | + ^ | | + +--------------------| SCLK | + +-------------+ diff --git a/Documentation/iio/ad4695.rst b/Documentation/iio/ad4695.rst new file mode 100644 index 000000000000..7612596bb6e9 --- /dev/null +++ b/Documentation/iio/ad4695.rst @@ -0,0 +1,162 @@ +.. SPDX-License-Identifier: GPL-2.0-only + +============= +AD4695 driver +============= + +ADC driver for Analog Devices Inc. AD4695 and similar devices. The module name +is ``ad4695``. + + +Supported devices +================= + +The following chips are supported by this driver: + +* `AD4695 <https://www.analog.com/AD4695>`_ +* `AD4696 <https://www.analog.com/AD4696>`_ +* `AD4697 <https://www.analog.com/AD4697>`_ +* `AD4698 <https://www.analog.com/AD4698>`_ + + +Supported features +================== + +SPI wiring modes +---------------- + +The driver currently supports the following SPI wiring configuration: + +4-wire mode +^^^^^^^^^^^ + +In this mode, CNV and CS are tied together and there is a single SDO line. + +.. code-block:: + + +-------------+ +-------------+ + | CS |<-+------| CS | + | CNV |<-+ | | + | ADC | | HOST | + | | | | + | SDI |<--------| SDO | + | SDO |-------->| SDI | + | SCLK |<--------| SCLK | + +-------------+ +-------------+ + +To use this mode, in the device tree, omit the ``cnv-gpios`` and +``spi-rx-bus-width`` properties. + +Channel configuration +--------------------- + +Since the chip supports multiple ways to configure each channel, this must be +described in the device tree based on what is actually wired up to the inputs. + +There are three typical configurations: + +An ``INx`` pin is used as the positive input with the ``REFGND``, ``COM`` or +the next ``INx`` pin as the negative input. + +Pairing with REFGND +^^^^^^^^^^^^^^^^^^^ + +Each ``INx`` pin can be used as a pseudo-differential input in conjunction with +the ``REFGND`` pin. The device tree will look like this: + +.. code-block:: + + channel@0 { + reg = <0>; /* IN0 */ + }; + +If no other channel properties are needed (e.g. ``adi,no-high-z``), the channel +node can be omitted entirely. + +This will appear on the IIO bus as the ``voltage0`` channel. The processed value +(*raw × scale*) will be the voltage present on the ``IN0`` pin relative to +``REFGND``. (Offset is always 0 when pairing with ``REFGND``.) + +Pairing with COM +^^^^^^^^^^^^^^^^ + +Each ``INx`` pin can be used as a pseudo-differential input in conjunction with +the ``COM`` pin. The device tree will look like this: + +.. code-block:: + + com-supply = <&vref_div_2>; + + channel@1 { + reg = <1>; /* IN1 */ + common-mode-channel = <AD4695_COMMON_MODE_COM>; + bipolar; + }; + +This will appear on the IIO bus as the ``voltage1`` channel. The processed value +(*(raw + offset) × scale*) will be the voltage measured on the ``IN1`` pin +relative to ``REFGND``. (The offset is determined by the ``com-supply`` voltage.) + +The macro comes from: + +.. code-block:: + + #include <dt-bindings/iio/adi,ad4695.h> + +Pairing two INx pins +^^^^^^^^^^^^^^^^^^^^ + +An even-numbered ``INx`` pin and the following odd-numbered ``INx`` pin can be +used as a pseudo-differential input. The device tree for using ``IN2`` as the +positive input and ``IN3`` as the negative input will look like this: + +.. code-block:: + + in3-supply = <&vref_div_2>; + + channel@2 { + reg = <2>; /* IN2 */ + common-mode-channel = <3>; /* IN3 */ + bipolar; + }; + +This will appear on the IIO bus as the ``voltage2`` channel. The processed value +(*(raw + offset) × scale*) will be the voltage measured on the ``IN1`` pin +relative to ``REFGND``. (Offset is determined by the ``in3-supply`` voltage.) + +VCC supply +---------- + +The chip supports being powered by an external LDO via the ``VCC`` input or an +internal LDO via the ``LDO_IN`` input. The driver looks at the device tree to +determine which is being used. If ``ldo-supply`` is present, then the internal +LDO is used. If ``vcc-supply`` is present, then the external LDO is used and +the internal LDO is disabled. + +Reference voltage +----------------- + +The chip supports an external reference voltage via the ``REF`` input or an +internal buffered reference voltage via the ``REFIN`` input. The driver looks +at the device tree to determine which is being used. If ``ref-supply`` is +present, then the external reference voltage is used and the internal buffer is +disabled. If ``refin-supply`` is present, then the internal buffered reference +voltage is used. + +Unimplemented features +---------------------- + +- Additional wiring modes +- Threshold events +- Oversampling +- Gain/offset calibration +- GPIO support +- CRC support + +Device buffers +============== + +This driver supports hardware triggered buffers. This uses the "advanced +sequencer" feature of the chip to trigger a burst of conversions. + +Also see :doc:`iio_devbuf` for more general information. diff --git a/Documentation/iio/ad7380.rst b/Documentation/iio/ad7380.rst new file mode 100644 index 000000000000..9c784c1e652e --- /dev/null +++ b/Documentation/iio/ad7380.rst @@ -0,0 +1,130 @@ +.. SPDX-License-Identifier: GPL-2.0-only + +============= +AD7380 driver +============= + +ADC driver for Analog Devices Inc. AD7380 and similar devices. The module name +is ``ad7380``. + + +Supported devices +================= + +The following chips are supported by this driver: + +* `AD7380 <https://www.analog.com/en/products/ad7380.html>`_ +* `AD7381 <https://www.analog.com/en/products/ad7381.html>`_ +* `AD7383 <https://www.analog.com/en/products/ad7383.html>`_ +* `AD7384 <https://www.analog.com/en/products/ad7384.html>`_ +* `AD7386 <https://www.analog.com/en/products/ad7386.html>`_ +* `AD7387 <https://www.analog.com/en/products/ad7387.html>`_ +* `AD7388 <https://www.analog.com/en/products/ad7388.html>`_ +* `AD7380-4 <https://www.analog.com/en/products/ad7380-4.html>`_ +* `AD7381-4 <https://www.analog.com/en/products/ad7381-4.html>`_ +* `AD7383-4 <https://www.analog.com/en/products/ad7383-4.html>`_ +* `AD7384-4 <https://www.analog.com/en/products/ad7384-4.html>`_ +* `AD7386-4 <https://www.analog.com/en/products/ad7386-4.html>`_ +* `AD7387-4 <https://www.analog.com/en/products/ad7387-4.html>`_ +* `AD7388-4 <https://www.analog.com/en/products/ad7388-4.html>`_ + + +Supported features +================== + +SPI wiring modes +---------------- + +ad738x ADCs can output data on several SDO lines (1/2/4). The driver currently +supports only 1 SDO line. + +Reference voltage +----------------- + +2 possible reference voltage sources are supported: + +- Internal reference (2.5V) +- External reference (2.5V to 3.3V) + +The source is determined by the device tree. If ``refio-supply`` is present, +then the external reference is used, else the internal reference is used. + +Oversampling and resolution boost +--------------------------------- + +This family supports 2 types of oversampling: normal average and rolling +average. Only normal average is supported by the driver, as rolling average can +be achieved by processing a captured data buffer. The following ratios are +available: 1 (oversampling disabled)/2/4/8/16/32. + +When the on-chip oversampling function is enabled the performance of the ADC can +exceed the default resolution. To accommodate the performance boost achievable, +it is possible to enable an additional two bits of resolution. Because the +resolution boost feature can only be enabled when oversampling is enabled and +oversampling is not as useful without the resolution boost, the driver +automatically enables the resolution boost if and only if oversampling is +enabled. + +Since the resolution boost feature causes 16-bit chips to now have 18-bit data +which means the storagebits has to change from 16 to 32 bits, we use the new +ext_scan_type feature to allow changing the scan_type at runtime. Unfortunately +libiio does not support it. So when enabling or disabling oversampling, user +must restart iiod using the following command: + +.. code-block:: bash + + root:~# systemctl restart iiod + +Channel selection and sequencer (single-end chips only) +------------------------------------------------------- + +Single-ended chips of this family (ad7386/7/8(-4)) have a 2:1 multiplexer in +front of each ADC. They also include additional configuration registers that +allow for either manual selection or automatic switching (sequencer mode), of +the multiplexer inputs. + +From an IIO point of view, all inputs are exported, i.e ad7386/7/8 +export 4 channels and ad7386-4/7-4/8-4 export 8 channels. + +Inputs ``AinX0`` of multiplexers correspond to the first half of IIO channels (i.e +0-1 or 0-3) and inputs ``AinX1`` correspond to second half (i.e 2-3 or 4-7). +Example for AD7386/7/8 (2 channels parts): + +.. code-block:: + + IIO | AD7386/7/8 + | +---------------------------- + | | _____ ______ + | | | | | | + voltage0 | AinA0 --|--->| | | | + | | | mux |----->| ADCA |--- + voltage2 | AinA1 --|--->| | | | + | | |_____| |_____ | + | | _____ ______ + | | | | | | + voltage1 | AinB0 --|--->| | | | + | | | mux |----->| ADCB |--- + voltage3 | AinB1 --|--->| | | | + | | |_____| |______| + | | + | +---------------------------- + + +When enabling sequencer mode, the effective sampling rate is divided by two. + +Unimplemented features +---------------------- + +- 2/4 SDO lines +- Rolling average oversampling +- Power down mode +- CRC indication +- Alert + + +Device buffers +============== + +This driver supports IIO triggered buffers. + +See :doc:`iio_devbuf` for more information. diff --git a/Documentation/iio/adxl380.rst b/Documentation/iio/adxl380.rst new file mode 100644 index 000000000000..376dee5fe1dd --- /dev/null +++ b/Documentation/iio/adxl380.rst @@ -0,0 +1,233 @@ +.. SPDX-License-Identifier: GPL-2.0 + +=============== +ADXL380 driver +=============== + +This driver supports Analog Device's ADXL380/382 on SPI/I2C bus. + +1. Supported devices +==================== + +* `ADXL380 <https://www.analog.com/ADXL380>`_ +* `ADXL382 <https://www.analog.com/ADXL382>`_ + +The ADXL380/ADXL382 is a low noise density, low power, 3-axis accelerometer with +selectable measurement ranges. The ADXL380 supports the ±4 g, ±8 g, and ±16 g +ranges, and the ADXL382 supports ±15 g, ±30 g, and ±60 g ranges. + +2. Device attributes +==================== + +Accelerometer measurements are always provided. + +Temperature data are also provided. This data can be used to monitor the +internal system temperature or to improve the temperature stability of the +device via calibration. + +Each IIO device, has a device folder under ``/sys/bus/iio/devices/iio:deviceX``, +where X is the IIO index of the device. Under these folders reside a set of +device files, depending on the characteristics and features of the hardware +device in questions. These files are consistently generalized and documented in +the IIO ABI documentation. + +The following tables show the adxl380 related device files, found in the +specific device folder path ``/sys/bus/iio/devices/iio:deviceX``. + ++---------------------------------------------------+----------------------------------------------------------+ +| 3-Axis Accelerometer related device files | Description | ++---------------------------------------------------+----------------------------------------------------------+ +| in_accel_scale | Scale for the accelerometer channels. | ++---------------------------------------------------+----------------------------------------------------------+ +| in_accel_filter_high_pass_3db_frequency | Low pass filter bandwidth. | ++---------------------------------------------------+----------------------------------------------------------+ +| in_accel_filter_high_pass_3db_frequency_available | Available low pass filter bandwidth configurations. | ++---------------------------------------------------+----------------------------------------------------------+ +| in_accel_filter_low_pass_3db_frequency | High pass filter bandwidth. | ++---------------------------------------------------+----------------------------------------------------------+ +| in_accel_filter_low_pass_3db_frequency_available | Available high pass filter bandwidth configurations. | ++---------------------------------------------------+----------------------------------------------------------+ +| in_accel_x_calibbias | Calibration offset for the X-axis accelerometer channel. | ++---------------------------------------------------+----------------------------------------------------------+ +| in_accel_x_raw | Raw X-axis accelerometer channel value. | ++---------------------------------------------------+----------------------------------------------------------+ +| in_accel_y_calibbias | y-axis acceleration offset correction | ++---------------------------------------------------+----------------------------------------------------------+ +| in_accel_y_raw | Raw Y-axis accelerometer channel value. | ++---------------------------------------------------+----------------------------------------------------------+ +| in_accel_z_calibbias | Calibration offset for the Z-axis accelerometer channel. | ++---------------------------------------------------+----------------------------------------------------------+ +| in_accel_z_raw | Raw Z-axis accelerometer channel value. | ++---------------------------------------------------+----------------------------------------------------------+ + ++----------------------------------+--------------------------------------------+ +| Temperature sensor related files | Description | ++----------------------------------+--------------------------------------------+ +| in_temp_raw | Raw temperature channel value. | ++----------------------------------+--------------------------------------------+ +| in_temp_offset | Offset for the temperature sensor channel. | ++----------------------------------+--------------------------------------------+ +| in_temp_scale | Scale for the temperature sensor channel. | ++----------------------------------+--------------------------------------------+ + ++------------------------------+----------------------------------------------+ +| Miscellaneous device files | Description | ++------------------------------+----------------------------------------------+ +| name | Name of the IIO device. | ++------------------------------+----------------------------------------------+ +| sampling_frequency | Currently selected sample rate. | ++------------------------------+----------------------------------------------+ +| sampling_frequency_available | Available sampling frequency configurations. | ++------------------------------+----------------------------------------------+ + +Channels processed values +------------------------- + +A channel value can be read from its _raw attribute. The value returned is the +raw value as reported by the devices. To get the processed value of the channel, +apply the following formula: + +.. code-block:: bash + + processed value = (_raw + _offset) * _scale + +Where _offset and _scale are device attributes. If no _offset attribute is +present, simply assume its value is 0. + +The adis16475 driver offers data for 2 types of channels, the table below shows +the measurement units for the processed value, which are defined by the IIO +framework: + ++-------------------------------------+---------------------------+ +| Channel type | Measurement unit | ++-------------------------------------+---------------------------+ +| Acceleration on X, Y, and Z axis | Meters per Second squared | ++-------------------------------------+---------------------------+ +| Temperature | Millidegrees Celsius | ++-------------------------------------+---------------------------+ + +Usage examples +-------------- + +Show device name: + +.. code-block:: bash + + root:/sys/bus/iio/devices/iio:device0> cat name + adxl382 + +Show accelerometer channels value: + +.. code-block:: bash + + root:/sys/bus/iio/devices/iio:device0> cat in_accel_x_raw + -1771 + root:/sys/bus/iio/devices/iio:device0> cat in_accel_y_raw + 282 + root:/sys/bus/iio/devices/iio:device0> cat in_accel_z_raw + -1523 + root:/sys/bus/iio/devices/iio:device0> cat in_accel_scale + 0.004903325 + +- X-axis acceleration = in_accel_x_raw * in_accel_scale = −8.683788575 m/s^2 +- Y-axis acceleration = in_accel_y_raw * in_accel_scale = 1.38273765 m/s^2 +- Z-axis acceleration = in_accel_z_raw * in_accel_scale = -7.467763975 m/s^2 + +Set calibration offset for accelerometer channels: + +.. code-block:: bash + + root:/sys/bus/iio/devices/iio:device0> cat in_accel_x_calibbias + 0 + + root:/sys/bus/iio/devices/iio:device0> echo 50 > in_accel_x_calibbias + root:/sys/bus/iio/devices/iio:device0> cat in_accel_x_calibbias + 50 + +Set sampling frequency: + +.. code-block:: bash + + root:/sys/bus/iio/devices/iio:device0> cat sampling_frequency + 16000 + root:/sys/bus/iio/devices/iio:device0> cat sampling_frequency_available + 16000 32000 64000 + + root:/sys/bus/iio/devices/iio:device0> echo 32000 > sampling_frequency + root:/sys/bus/iio/devices/iio:device0> cat sampling_frequency + 32000 + +Set low pass filter bandwidth for accelerometer channels: + +.. code-block:: bash + + root:/sys/bus/iio/devices/iio:device0> cat in_accel_filter_low_pass_3db_frequency + 32000 + root:/sys/bus/iio/devices/iio:device0> cat in_accel_filter_low_pass_3db_frequency_available + 32000 8000 4000 2000 + + root:/sys/bus/iio/devices/iio:device0> echo 2000 > in_accel_filter_low_pass_3db_frequency + root:/sys/bus/iio/devices/iio:device0> cat in_accel_filter_low_pass_3db_frequency + 2000 + +3. Device buffers +================= + +This driver supports IIO buffers. + +All devices support retrieving the raw acceleration and temperature measurements +using buffers. + +Usage examples +-------------- + +Select channels for buffer read: + +.. code-block:: bash + + root:/sys/bus/iio/devices/iio:device0> echo 1 > scan_elements/in_accel_x_en + root:/sys/bus/iio/devices/iio:device0> echo 1 > scan_elements/in_accel_y_en + root:/sys/bus/iio/devices/iio:device0> echo 1 > scan_elements/in_accel_z_en + root:/sys/bus/iio/devices/iio:device0> echo 1 > scan_elements/in_temp_en + +Set the number of samples to be stored in the buffer: + +.. code-block:: bash + + root:/sys/bus/iio/devices/iio:device0> echo 10 > buffer/length + +Enable buffer readings: + +.. code-block:: bash + + root:/sys/bus/iio/devices/iio:device0> echo 1 > buffer/enable + +Obtain buffered data: + +.. code-block:: bash + + root:/sys/bus/iio/devices/iio:device0> hexdump -C /dev/iio\:device0 + ... + 002bc300 f7 e7 00 a8 fb c5 24 80 f7 e7 01 04 fb d6 24 80 |......$.......$.| + 002bc310 f7 f9 00 ab fb dc 24 80 f7 c3 00 b8 fb e2 24 80 |......$.......$.| + 002bc320 f7 fb 00 bb fb d1 24 80 f7 b1 00 5f fb d1 24 80 |......$...._..$.| + 002bc330 f7 c4 00 c6 fb a6 24 80 f7 a6 00 68 fb f1 24 80 |......$....h..$.| + 002bc340 f7 b8 00 a3 fb e7 24 80 f7 9a 00 b1 fb af 24 80 |......$.......$.| + 002bc350 f7 b1 00 67 fb ee 24 80 f7 96 00 be fb 92 24 80 |...g..$.......$.| + 002bc360 f7 ab 00 7a fc 1b 24 80 f7 b6 00 ae fb 76 24 80 |...z..$......v$.| + 002bc370 f7 ce 00 a3 fc 02 24 80 f7 c0 00 be fb 8b 24 80 |......$.......$.| + 002bc380 f7 c3 00 93 fb d0 24 80 f7 ce 00 d8 fb c8 24 80 |......$.......$.| + 002bc390 f7 bd 00 c0 fb 82 24 80 f8 00 00 e8 fb db 24 80 |......$.......$.| + 002bc3a0 f7 d8 00 d3 fb b4 24 80 f8 0b 00 e5 fb c3 24 80 |......$.......$.| + 002bc3b0 f7 eb 00 c8 fb 92 24 80 f7 e7 00 ea fb cb 24 80 |......$.......$.| + 002bc3c0 f7 fd 00 cb fb 94 24 80 f7 e3 00 f2 fb b8 24 80 |......$.......$.| + ... + +See ``Documentation/iio/iio_devbuf.rst`` for more information about how buffered +data is structured. + +4. IIO Interfacing Tools +======================== + +See ``Documentation/iio/iio_tools.rst`` for the description of the available IIO +interfacing tools. diff --git a/Documentation/iio/index.rst b/Documentation/iio/index.rst index 9cb4c50cb20d..dfcf9618568a 100644 --- a/Documentation/iio/index.rst +++ b/Documentation/iio/index.rst @@ -18,8 +18,12 @@ Industrial I/O Kernel Drivers .. toctree:: :maxdepth: 1 + ad4000 + ad4695 + ad7380 ad7944 adis16475 adis16480 + adxl380 bno055 ep93xx_adc diff --git a/Documentation/spi/spi-summary.rst b/Documentation/spi/spi-summary.rst index 7f8accfae6f9..6e21e6f86912 100644 --- a/Documentation/spi/spi-summary.rst +++ b/Documentation/spi/spi-summary.rst @@ -614,6 +614,89 @@ queue, and then start some asynchronous transfer engine (unless it's already running). +Extensions to the SPI protocol +------------------------------ +The fact that SPI doesn't have a formal specification or standard permits chip +manufacturers to implement the SPI protocol in slightly different ways. In most +cases, SPI protocol implementations from different vendors are compatible among +each other. For example, in SPI mode 0 (CPOL=0, CPHA=0) the bus lines may behave +like the following: + +:: + + nCSx ___ ___ + \_________________________________________________________________/ + • • + • • + SCLK ___ ___ ___ ___ ___ ___ ___ ___ + _______/ \___/ \___/ \___/ \___/ \___/ \___/ \___/ \_____ + • : ; : ; : ; : ; : ; : ; : ; : ; • + • : ; : ; : ; : ; : ; : ; : ; : ; • + MOSI XXX__________ _______ _______ ________XXX + 0xA5 XXX__/ 1 \_0_____/ 1 \_0_______0_____/ 1 \_0_____/ 1 \_XXX + • ; ; ; ; ; ; ; ; • + • ; ; ; ; ; ; ; ; • + MISO XXX__________ _______________________ _______ XXX + 0xBA XXX__/ 1 \_____0_/ 1 1 1 \_____0__/ 1 \____0__XXX + +Legend:: + + • marks the start/end of transmission; + : marks when data is clocked into the peripheral; + ; marks when data is clocked into the controller; + X marks when line states are not specified. + +In some few cases, chips extend the SPI protocol by specifying line behaviors +that other SPI protocols don't (e.g. data line state for when CS is not +asserted). Those distinct SPI protocols, modes, and configurations are supported +by different SPI mode flags. + +MOSI idle state configuration +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +Common SPI protocol implementations don't specify any state or behavior for the +MOSI line when the controller is not clocking out data. However, there do exist +peripherals that require specific MOSI line state when data is not being clocked +out. For example, if the peripheral expects the MOSI line to be high when the +controller is not clocking out data (``SPI_MOSI_IDLE_HIGH``), then a transfer in +SPI mode 0 would look like the following: + +:: + + nCSx ___ ___ + \_________________________________________________________________/ + • • + • • + SCLK ___ ___ ___ ___ ___ ___ ___ ___ + _______/ \___/ \___/ \___/ \___/ \___/ \___/ \___/ \_____ + • : ; : ; : ; : ; : ; : ; : ; : ; • + • : ; : ; : ; : ; : ; : ; : ; : ; • + MOSI _____ _______ _______ _______________ ___ + 0x56 \_0_____/ 1 \_0_____/ 1 \_0_____/ 1 1 \_0_____/ + • ; ; ; ; ; ; ; ; • + • ; ; ; ; ; ; ; ; • + MISO XXX__________ _______________________ _______ XXX + 0xBA XXX__/ 1 \_____0_/ 1 1 1 \_____0__/ 1 \____0__XXX + +Legend:: + + • marks the start/end of transmission; + : marks when data is clocked into the peripheral; + ; marks when data is clocked into the controller; + X marks when line states are not specified. + +In this extension to the usual SPI protocol, the MOSI line state is specified to +be kept high when CS is asserted but the controller is not clocking out data to +the peripheral and also when CS is not asserted. + +Peripherals that require this extension must request it by setting the +``SPI_MOSI_IDLE_HIGH`` bit into the mode attribute of their ``struct +spi_device`` and call spi_setup(). Controllers that support this extension +should indicate it by setting ``SPI_MOSI_IDLE_HIGH`` in the mode_bits attribute +of their ``struct spi_controller``. The configuration to idle MOSI low is +analogous but uses the ``SPI_MOSI_IDLE_LOW`` mode bit. + + THANKS TO --------- Contributors to Linux-SPI discussions include (in alphabetical order, |