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Diffstat (limited to 'kernel/Documentation/devicetree/bindings/pwm/pxa-pwm.txt')
| -rw-r--r-- | kernel/Documentation/devicetree/bindings/pwm/pxa-pwm.txt | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/kernel/Documentation/devicetree/bindings/pwm/pxa-pwm.txt b/kernel/Documentation/devicetree/bindings/pwm/pxa-pwm.txt new file mode 100644 index 000000000..5ae9f1e3c --- /dev/null +++ b/kernel/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>; + ... +} |