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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
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>;