0001 STMicroelectronics PWM driver bindings
0002 --------------------------------------
0003
0004 Required parameters:
0005 - compatible : "st,pwm"
0006 - #pwm-cells : Number of cells used to specify a PWM. First cell
0007 specifies the per-chip index of the PWM to use and the
0008 second cell is the period in nanoseconds - fixed to 2
0009 for STiH41x.
0010 - reg : Physical base address and length of the controller's
0011 registers.
0012 - pinctrl-names: Set to "default".
0013 - pinctrl-0: List of phandles pointing to pin configuration nodes
0014 for PWM module.
0015 For Pinctrl properties, please refer to [1].
0016 - clock-names: Valid entries are "pwm" and/or "capture".
0017 - clocks: phandle of the clock used by the PWM module.
0018 For Clk properties, please refer to [2].
0019 - interrupts: IRQ for the Capture device
0020
0021 Optional properties:
0022 - st,pwm-num-chan: Number of available PWM channels. Default is 0.
0023 - st,capture-num-chan: Number of available Capture channels. Default is 0.
0024
0025 [1] Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
0026 [2] Documentation/devicetree/bindings/clock/clock-bindings.txt
0027
0028 Example:
0029
0030 pwm1: pwm@fe510000 {
0031 compatible = "st,pwm";
0032 reg = <0xfe510000 0x68>;
0033 #pwm-cells = <2>;
0034 pinctrl-names = "default";
0035 pinctrl-0 = <&pinctrl_pwm1_chan0_default
0036 &pinctrl_pwm1_chan1_default
0037 &pinctrl_pwm1_chan2_default
0038 &pinctrl_pwm1_chan3_default>;
0039 clocks = <&clk_sysin>;
0040 clock-names = "pwm";
0041 st,pwm-num-chan = <4>;
0042 st,capture-num-chan = <2>;
0043 };
