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Commit 055beac1 authored by Lee Jones's avatar Lee Jones Committed by Thierry Reding
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dt-bindings: pwm: sti: Update DT bindings for capture support 



In order to support capture of PWM signals a new clock as well as an
interrupt line are required. Furthermore a new property is introduced
that allows the number of capture channels to be specified. Typically
there will be less capture channels than output channels, since all
channels have the latter capability, but only some have support for
capture.

Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarThierry Reding <thierry.reding@gmail.com>
parent fe0e2cf9

Documentation/devicetree/bindings/pwm/pwm-st.txt

+5 −3
Original line number Diff line number Diff line
@@ -13,13 +13,14 @@ Required parameters: 
- 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".

- clock-names: 		Valid entries are "pwm" and/or "capture".

- clocks: 		phandle of the clock used by the PWM module.

			For Clk properties, please refer to [2].

- interrupts:		IRQ for the Capture device



Optional properties:

- st,pwm-num-chan:	Number of available channels. If not passed, the driver

			will consider single channel by default.

- st,pwm-num-chan:	Number of available PWM channels.  Default is 0.

- st,capture-num-chan:	Number of available Capture channels.  Default is 0.



[1] Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt

[2] Documentation/devicetree/bindings/clock/clock-bindings.txt
@@ -38,4 +39,5 @@ pwm1: pwm@fe510000 { 
	clocks = <&clk_sysin>;

	clock-names = "pwm";

	st,pwm-num-chan = <4>;

	st,capture-num-chan = <2>;

};