diff options
| author | Yuval Adam <_@yuv.al> | 2017-08-30 08:25:59 +0000 |
|---|---|---|
| committer | Yuval Adam <_@yuv.al> | 2017-08-30 08:25:59 +0000 |
| commit | 8e4bff4cab0ddac6060645b0715210484d02ff40 (patch) | |
| tree | 3a5c3024371a04692a3a6d9974d001cdff8ebf84 /Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt | |
Diffstat (limited to 'Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt b/Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt new file mode 100644 index 00000000..337c6fc6 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt @@ -0,0 +1,31 @@ +TI SOC EHRPWM based PWM controller + +Required properties: +- compatible: Must be "ti,<soc>-ehrpwm". + for am33xx - compatible = "ti,am33xx-ehrpwm"; + for da850 - compatible = "ti,da850-ehrpwm", "ti,am33xx-ehrpwm"; +- #pwm-cells: Should be 3. Number of cells being used to specify PWM property. + First cell specifies the per-chip index of the PWM to use, the second + cell is the period in nanoseconds and bit 0 in the third cell is used to + encode the polarity of PWM output. Set bit 0 of the third in PWM specifier + to 1 for inverse polarity & set to 0 for normal polarity. +- reg: physical base address and size of the registers map. + +Optional properties: +- ti,hwmods: Name of the hwmod associated to the EHRPWM: + "ehrpwm<x>", <x> being the 0-based instance number from the HW spec + +Example: + +ehrpwm0: ehrpwm@0 { /* EHRPWM on am33xx */ + compatible = "ti,am33xx-ehrpwm"; + #pwm-cells = <3>; + reg = <0x48300200 0x100>; + ti,hwmods = "ehrpwm0"; +}; + +ehrpwm0: ehrpwm@0 { /* EHRPWM on da850 */ + compatible = "ti,da850-ehrpwm", "ti,am33xx-ehrpwm"; + #pwm-cells = <3>; + reg = <0x300000 0x2000>; +}; |
