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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-01-30 07:47:58 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-01-30 07:47:58 -0800 |
commit | 893e591b59036f9bc629f55bce715d67bdd266a2 (patch) | |
tree | 8f52583958252b2b89d86c0d4d94d9cb44f8a4ee /Documentation/devicetree/bindings/dma/stm32-mdma.txt | |
parent | 1c715a659a16e193a23051ddff4becdad8e18ba1 (diff) | |
parent | e9a3bfe38e393e1d8bd74986cdc9b99b8f9d1efc (diff) |
Merge tag 'devicetree-for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree updates from Rob Herring:
- Update dtc to upstream v1.5.1-22-gc40aeb60b47a (plus 1 revert)
- Fix for DMA coherent devices on Power
- Rework and simplify the DT phandle cache code
- DT schema conversions for LEDS, gpio-leds, STM32 dfsdm, STM32 UART,
STM32 ROMEM, STM32 watchdog, STM32 DMAs, STM32 mlahb, STM32 RTC,
STM32 RCC, STM32 syscon, rs485, Renesas rCar CSI2, Faraday FTIDE010,
DWC2, Arm idle-states, Allwinner legacy resets, PRCM and clocks,
Allwinner H6 OPP, Allwinner AHCI, Allwinner MBUS, Allwinner A31 CSI,
Allwinner h/w codec, Allwinner A10 system ctrl, Allwinner SRAM,
Allwinner USB PHY, Renesas CEU, generic PCI host, Arm Versatile PCI
- New binding schemas for SATA and PATA controllers, TI and Infineon VR
controllers, MAX31730
- New compatible strings for i.MX8QM, WCN3991, renesas,r8a77961-wdt,
renesas,etheravb-r8a77961
- Add USB 'super-speed-plus' as a documented speed
- Vendor prefixes for broadmobi, calaosystems, kam, and mps
- Clean-up the multiple flavors of ST-Ericsson vendor prefixes
* tag 'devicetree-for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (66 commits)
scripts/dtc: Revert "yamltree: Ensure consistent bracketing of properties with phandles"
of: Add OF_DMA_DEFAULT_COHERENT & select it on powerpc
dt-bindings: leds: Convert gpio-leds to DT schema
dt-bindings: leds: Convert common LED binding to schema
dt-bindings: PCI: Convert generic host binding to DT schema
dt-bindings: PCI: Convert Arm Versatile binding to DT schema
dt-bindings: Be explicit about installing deps
dt-bindings: stm32: convert dfsdm to json-schema
dt-bindings: serial: Convert STM32 UART to json-schema
dt-bindings: serial: Convert rs485 bindings to json-schema
dt-bindings: timer: Use non-empty ranges in example
dt-bindings: arm-boards: typo fix
dt-bindings: Add TI and Infineon VR Controllers as trivial devices
dt-binding: usb: add "super-speed-plus"
dt-bindings: rcar-csi2: Convert bindings to json-schema
dt-bindings: iio: adc: ad7606: Fix wrong maxItems value
dt-bindings: Convert Faraday FTIDE010 to DT schema
dt-bindings: Create DT bindings for PATA controllers
dt-bindings: Create DT bindings for SATA controllers
dt: bindings: add vendor prefix for Kamstrup A/S
...
Diffstat (limited to 'Documentation/devicetree/bindings/dma/stm32-mdma.txt')
-rw-r--r-- | Documentation/devicetree/bindings/dma/stm32-mdma.txt | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/Documentation/devicetree/bindings/dma/stm32-mdma.txt b/Documentation/devicetree/bindings/dma/stm32-mdma.txt deleted file mode 100644 index d18772d6bc65..000000000000 --- a/Documentation/devicetree/bindings/dma/stm32-mdma.txt +++ /dev/null @@ -1,94 +0,0 @@ -* STMicroelectronics STM32 MDMA controller - -The STM32 MDMA is a general-purpose direct memory access controller capable of -supporting 64 independent DMA channels with 256 HW requests. - -Required properties: -- compatible: Should be "st,stm32h7-mdma" -- reg: Should contain MDMA registers location and length. This should include - all of the per-channel registers. -- interrupts: Should contain the MDMA interrupt. -- clocks: Should contain the input clock of the DMA instance. -- resets: Reference to a reset controller asserting the DMA controller. -- #dma-cells : Must be <5>. See DMA client paragraph for more details. - -Optional properties: -- dma-channels: Number of DMA channels supported by the controller. -- dma-requests: Number of DMA request signals supported by the controller. -- st,ahb-addr-masks: Array of u32 mask to list memory devices addressed via - AHB bus. - -Example: - - mdma1: dma@52000000 { - compatible = "st,stm32h7-mdma"; - reg = <0x52000000 0x1000>; - interrupts = <122>; - clocks = <&timer_clk>; - resets = <&rcc 992>; - #dma-cells = <5>; - dma-channels = <16>; - dma-requests = <32>; - st,ahb-addr-masks = <0x20000000>, <0x00000000>; - }; - -* DMA client - -DMA clients connected to the STM32 MDMA controller must use the format -described in the dma.txt file, using a five-cell specifier for each channel: -a phandle to the MDMA controller plus the following five integer cells: - -1. The request line number -2. The priority level - 0x00: Low - 0x01: Medium - 0x10: High - 0x11: Very high -3. A 32bit mask specifying the DMA channel configuration - -bit 0-1: Source increment mode - 0x00: Source address pointer is fixed - 0x10: Source address pointer is incremented after each data transfer - 0x11: Source address pointer is decremented after each data transfer - -bit 2-3: Destination increment mode - 0x00: Destination address pointer is fixed - 0x10: Destination address pointer is incremented after each data - transfer - 0x11: Destination address pointer is decremented after each data - transfer - -bit 8-9: Source increment offset size - 0x00: byte (8bit) - 0x01: half-word (16bit) - 0x10: word (32bit) - 0x11: double-word (64bit) - -bit 10-11: Destination increment offset size - 0x00: byte (8bit) - 0x01: half-word (16bit) - 0x10: word (32bit) - 0x11: double-word (64bit) --bit 25-18: The number of bytes to be transferred in a single transfer - (min = 1 byte, max = 128 bytes) --bit 29:28: Trigger Mode - 0x00: Each MDMA request triggers a buffer transfer (max 128 bytes) - 0x01: Each MDMA request triggers a block transfer (max 64K bytes) - 0x10: Each MDMA request triggers a repeated block transfer - 0x11: Each MDMA request triggers a linked list transfer -4. A 32bit value specifying the register to be used to acknowledge the request - if no HW ack signal is used by the MDMA client -5. A 32bit mask specifying the value to be written to acknowledge the request - if no HW ack signal is used by the MDMA client - -Example: - - i2c4: i2c@5c002000 { - compatible = "st,stm32f7-i2c"; - reg = <0x5c002000 0x400>; - interrupts = <95>, - <96>; - clocks = <&timer_clk>; - #address-cells = <1>; - #size-cells = <0>; - dmas = <&mdma1 36 0x0 0x40008 0x0 0x0>, - <&mdma1 37 0x0 0x40002 0x0 0x0>; - dma-names = "rx", "tx"; - status = "disabled"; - }; |