44 lines
1.4 KiB
Plaintext
44 lines
1.4 KiB
Plaintext
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STMicroelectronics PWM driver bindings
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--------------------------------------
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Required parameters:
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- compatible : "st,pwm"
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- #pwm-cells : Number of cells used to specify a PWM. First cell
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specifies the per-chip index of the PWM to use and the
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second cell is the period in nanoseconds - fixed to 2
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for STiH41x.
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- reg : Physical base address and length of the controller's
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registers.
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- pinctrl-names: Set to "default".
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- pinctrl-0: List of phandles pointing to pin configuration nodes
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for PWM module.
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For Pinctrl properties, please refer to [1].
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- clock-names: Valid entries are "pwm" and/or "capture".
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- clocks: phandle of the clock used by the PWM module.
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For Clk properties, please refer to [2].
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- interrupts: IRQ for the Capture device
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Optional properties:
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- st,pwm-num-chan: Number of available PWM channels. Default is 0.
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- st,capture-num-chan: Number of available Capture channels. Default is 0.
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[1] Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
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[2] Documentation/devicetree/bindings/clock/clock-bindings.txt
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Example:
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pwm1: pwm@fe510000 {
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compatible = "st,pwm";
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reg = <0xfe510000 0x68>;
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#pwm-cells = <2>;
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_pwm1_chan0_default
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&pinctrl_pwm1_chan1_default
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&pinctrl_pwm1_chan2_default
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&pinctrl_pwm1_chan3_default>;
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clocks = <&clk_sysin>;
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clock-names = "pwm";
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st,pwm-num-chan = <4>;
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st,capture-num-chan = <2>;
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};
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