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STMicroelectronics PWM driver bindings
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Required parameters:
- compatible : "st,pwm"
- #pwm-cells : Number of cells used to specify a PWM. First cell
specifies the per-chip index of the PWM to use and the
second cell is the period in nanoseconds - fixed to 2
for STiH41x.
- reg : Physical base address and length of the controller's
registers.
- pinctrl-names: Set to "default".
- pinctrl-0: List of phandles pointing to pin configuration nodes
for PWM module.
For Pinctrl properties, please refer to [1].
- clock-names: Set to "pwm".
- clocks: phandle of the clock used by the PWM module.
For Clk properties, please refer to [2].
Optional properties:
- st,pwm-num-chan: Number of available channels. If not passed, the driver
will consider single channel by default.
[1] Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
[2] Documentation/devicetree/bindings/clock/clock-bindings.txt
Example:
pwm1: pwm@fe510000 {
compatible = "st,pwm";
reg = <0xfe510000 0x68>;
#pwm-cells = <2>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pwm1_chan0_default
&pinctrl_pwm1_chan1_default
&pinctrl_pwm1_chan2_default
&pinctrl_pwm1_chan3_default>;
clocks = <&clk_sysin>;
clock-names = "pwm";
st,pwm-num-chan = <4>;
};
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