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| author | Stephen Rothwell <sfr@canb.auug.org.au> | 2014-01-10 15:01:34 +1100 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2014-01-10 15:01:34 +1100 |
| commit | 09137183d86dbc829989d8e750363f191142c148 (patch) | |
| tree | 9233c75d92902134e7614a87e2bcb0357f86ed98 /Documentation | |
| parent | c9c60d34872cc0fae22f9986035c021e286dbeeb (diff) | |
| parent | 82569e5b2236bc139f89dfd18c6088985a52c8ee (diff) | |
Merge remote-tracking branch 'pwm/for-next'
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/pwm/atmel-pwm.txt | 33 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/pwm/pxa-pwm.txt | 30 |
2 files changed, 63 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pwm/atmel-pwm.txt b/Documentation/devicetree/bindings/pwm/atmel-pwm.txt new file mode 100644 index 000000000000..02331b904d4e --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/atmel-pwm.txt @@ -0,0 +1,33 @@ +Atmel PWM controller + +Required properties: + - compatible: should be one of: + - "atmel,at91sam9rl-pwm" + - "atmel,sama5d3-pwm" + - reg: physical base address and length of the controller's registers + - #pwm-cells: Should be 3. See pwm.txt in this directory for a + description of the cells format. + +Example: + + pwm0: pwm@f8034000 { + compatible = "atmel,at91sam9rl-pwm"; + reg = <0xf8034000 0x400>; + #pwm-cells = <3>; + }; + + pwmleds { + compatible = "pwm-leds"; + + d1 { + label = "d1"; + pwms = <&pwm0 3 5000 0> + max-brightness = <255>; + }; + + d2 { + label = "d2"; + pwms = <&pwm0 1 5000 1> + max-brightness = <255>; + }; + }; diff --git a/Documentation/devicetree/bindings/pwm/pxa-pwm.txt b/Documentation/devicetree/bindings/pwm/pxa-pwm.txt new file mode 100644 index 000000000000..5ae9f1e3c338 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/pxa-pwm.txt @@ -0,0 +1,30 @@ +Marvell PWM controller + +Required properties: +- compatible: should be one or more of: + - "marvell,pxa250-pwm" + - "marvell,pxa270-pwm" + - "marvell,pxa168-pwm" + - "marvell,pxa910-pwm" +- reg: Physical base address and length of the registers used by the PWM channel + Note that one device instance must be created for each PWM that is used, so the + length covers only the register window for one PWM output, not that of the + entire PWM controller. Currently length is 0x10 for all supported devices. +- #pwm-cells: Should be 1. This cell is used to specify the period in + nanoseconds. + +Example PWM device node: + +pwm0: pwm@40b00000 { + compatible = "marvell,pxa250-pwm"; + reg = <0x40b00000 0x10>; + #pwm-cells = <1>; +}; + +Example PWM client node: + +backlight { + compatible = "pwm-backlight"; + pwms = <&pwm0 5000000>; + ... +} |