1 STMicroelectronics PWM driver bindings
2 --------------------------------------
3
4 Required parameters:
5 - compatible : "st,pwm"
6 - #pwm-cells : Number of cells used to specify a PWM. First cell
7 specifies the per-chip index of the PWM to use and the
8 second cell is the period in nanoseconds - fixed to 2
9 for STiH41x.
10 - reg : Physical base address and length of the controller's
11 registers.
12 - pinctrl-names: Set to "default".
13 - pinctrl-0: List of phandles pointing to pin configuration nodes
14 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 device
20
21 Optional 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.txt
26 [2] Documentation/devicetree/bindings/clock/clock-bindings.txt
27
28 Example:
29
30 pwm1: pwm@fe510000 {
31 compatible = "st,pwm";
32 reg = <0xfe510000 0x68>;
33 #pwm-cells = <2>;
34 pinctrl-names = "default";
35 pinctrl-0 = <&pinctrl_pwm1_chan0_default
36 &pinctrl_pwm1_chan1_default
37 &pinctrl_pwm1_chan2_default
38 &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 };
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