linux-kernel - Re: [PATCH v6 3/8] PWM: add pwm-stm32 DT bindings

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Date:   Mon, 12 Dec 2016 13:02:05 -0600
From:   Rob Herring <robh@...nel.org>
To:     Benjamin Gaignard <benjamin.gaignard@...aro.org>
Cc:     lee.jones@...aro.org, mark.rutland@....com,
        alexandre.torgue@...com, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, thierry.reding@...il.com,
        linux-pwm@...r.kernel.org, jic23@...nel.org, knaack.h@....de,
        lars@...afoo.de, pmeerw@...erw.net, linux-iio@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, fabrice.gasnier@...com,
        gerald.baeza@...com, arnaud.pouliquen@...com,
        linus.walleij@...aro.org, linaro-kernel@...ts.linaro.org,
        Benjamin Gaignard <benjamin.gaignard@...com>
Subject: Re: [PATCH v6 3/8] PWM: add pwm-stm32 DT bindings

On Fri, Dec 09, 2016 at 03:15:14PM +0100, Benjamin Gaignard wrote:
> Define bindings for pwm-stm32
> 
> version 6:
> - change st,breakinput parameter format to make it usuable on stm32f7 too.
> 
> version 2:
> - use parameters instead of compatible of handle the hardware configuration
> 
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...com>
> ---
>  .../devicetree/bindings/pwm/pwm-stm32.txt          | 33 ++++++++++++++++++++++
>  1 file changed, 33 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pwm/pwm-stm32.txt
> 
> diff --git a/Documentation/devicetree/bindings/pwm/pwm-stm32.txt b/Documentation/devicetree/bindings/pwm/pwm-stm32.txt
> new file mode 100644
> index 0000000..866f222
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pwm/pwm-stm32.txt
> @@ -0,0 +1,33 @@
> +STMicroelectronics STM32 Timers PWM bindings
> +
> +Must be a sub-node of an STM32 Timers device tree node.
> +See ../mfd/stm32-timers.txt for details about the parent node.
> +
> +Required parameters:
> +- compatible:		Must be "st,stm32-pwm".
> +- pinctrl-names: 	Set to "default".
> +- pinctrl-0: 		List of phandles pointing to pin configuration nodes for PWM module.
> +			For Pinctrl properties see ../pinctrl/pinctrl-bindings.txt
> +
> +Optional parameters:
> +- st,breakinput:	Arrays of three u32 <index level filter> to describe break input configurations.
> +			"index" indicates on which break input the configuration should be applied.
> +			"level" gives the active level (0=low or 1=high) for this configuration.
> +			"filter" gives the filtering value to be applied.
> +
> +Example:
> +	timers@...10000 {

timer@...

With that,

Acked-by: Rob Herring <robh@...nel.org>


> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		compatible = "st,stm32-timers";
> +		reg = <0x40010000 0x400>;
> +		clocks = <&rcc 0 160>;
> +		clock-names = "clk_int";
> +
> +		pwm {
> +			compatible = "st,stm32-pwm";
> +			pinctrl-0	= <&pwm1_pins>;
> +			pinctrl-names	= "default";
> +			st,breakinput = <0 1 5>;
> +		};
> +	};
> -- 
> 1.9.1
>