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1STMicroelectronics PWM driver bindings2--------------------------------------3 4Required parameters:5- compatible : "st,pwm"6- #pwm-cells : Number of cells used to specify a PWM. First cell7 specifies the per-chip index of the PWM to use and the8 second cell is the period in nanoseconds - fixed to 29 for STiH41x.10- reg : Physical base address and length of the controller's11 registers.12- pinctrl-names: Set to "default".13- pinctrl-0: List of phandles pointing to pin configuration nodes14 for PWM module.15 For Pinctrl properties, please refer to [1].16- clock-names: Valid entries are "pwm" and/or "capture".17- clocks: phandle of the clock used by the PWM module.18 For Clk properties, please refer to [2].19- interrupts: IRQ for the Capture device20 21Optional properties:22- st,pwm-num-chan: Number of available PWM channels. Default is 0.23- st,capture-num-chan: Number of available Capture channels. Default is 0.24 25[1] Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt26[2] Documentation/devicetree/bindings/clock/clock-bindings.txt27 28Example:29 30pwm1: pwm@fe510000 {31 compatible = "st,pwm";32 reg = <0xfe510000 0x68>;33 #pwm-cells = <2>;34 pinctrl-names = "default";35 pinctrl-0 = <&pinctrl_pwm1_chan0_default36 &pinctrl_pwm1_chan1_default37 &pinctrl_pwm1_chan2_default38 &pinctrl_pwm1_chan3_default>;39 clocks = <&clk_sysin>;40 clock-names = "pwm";41 st,pwm-num-chan = <4>;42 st,capture-num-chan = <2>;43};44