Rockchip PWM controller Required properties: - compatible: should be "rockchip,-pwm" "rockchip,rk2928-pwm": found on RK29XX,RK3066 and RK3188 SoCs "rockchip,rk3288-pwm": found on RK3288 SOC "rockchip,rv1108-pwm", "rockchip,rk3288-pwm": found on RV1108 SoC "rockchip,vop-pwm": found integrated in VOP on RK3288 SoC - reg: physical base address and length of the controller's registers - clocks: See ../clock/clock-bindings.txt - For older hardware (rk2928, rk3066, rk3188, rk3228, rk3288, rk3399): - There is one clock that's used both to derive the functional clock for the device and as the bus clock. - For newer hardware (rk3328 and future socs): specified by name - "pwm": This is used to derive the functional clock. - "pclk": This is the APB bus clock. - #pwm-cells: must be 2 (rk2928) or 3 (rk3288). See pwm.txt in this directory for a description of the cell format. Example: pwm0: pwm@20030000 { compatible = "rockchip,rk2928-pwm"; reg = <0x20030000 0x10>; clocks = <&cru PCLK_PWM01>; #pwm-cells = <2>; };