1Rockchip PWM controller 2 3Required properties: 4 - compatible: should be "rockchip,<name>-pwm" 5 "rockchip,rk2928-pwm": found on RK29XX,RK3066 and RK3188 SoCs 6 "rockchip,rk3288-pwm": found on RK3288 SOC 7 "rockchip,rv1108-pwm", "rockchip,rk3288-pwm": found on RV1108 SoC 8 "rockchip,vop-pwm": found integrated in VOP on RK3288 SoC 9 - reg: physical base address and length of the controller's registers 10 - clocks: See ../clock/clock-bindings.txt 11 - For older hardware (rk2928, rk3066, rk3188, rk3228, rk3288, rk3399): 12 - There is one clock that's used both to derive the functional clock 13 for the device and as the bus clock. 14 - For newer hardware (rk3328 and future socs): specified by name 15 - "pwm": This is used to derive the functional clock. 16 - "pclk": This is the APB bus clock. 17 - #pwm-cells: must be 2 (rk2928) or 3 (rk3288). See pwm.yaml in this directory 18 for a description of the cell format. 19 20Example: 21 22 pwm0: pwm@20030000 { 23 compatible = "rockchip,rk2928-pwm"; 24 reg = <0x20030000 0x10>; 25 clocks = <&cru PCLK_PWM01>; 26 #pwm-cells = <2>; 27 }; 28