linux-kernel - Re: [PATCH v1 3/3] ARM: dts: imx6qdl-apalis: Use enable-gpios property for backlight

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Message-ID: <1474033134.3103.27.camel@toradex.com>
Date:   Fri, 16 Sep 2016 13:38:54 +0000
From:   Marcel Ziswiler <marcel.ziswiler@...adex.com>
To:     "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "maitysanchayan@...il.com" <maitysanchayan@...il.com>
CC:     "stefan@...er.ch" <stefan@...er.ch>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH v1 3/3] ARM: dts: imx6qdl-apalis: Use enable-gpios
 property for backlight

On Wed, 2016-09-14 at 12:05 +0530, Sanchayan Maity wrote:
> Use enable-gpios property of PWM backlight driver for backlight
> control. While at it also fix the use of brightness levels required
> by EDT displays which require inverted PWM's.

That part I am missing below. Did you forget to include it?

> Signed-off-by: Sanchayan Maity <maitysanchayan@...il.com>
> ---
>  arch/arm/boot/dts/imx6qdl-apalis.dtsi | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/imx6qdl-apalis.dtsi
> b/arch/arm/boot/dts/imx6qdl-apalis.dtsi
> index 8c67dd8..9100bde 100644
> --- a/arch/arm/boot/dts/imx6qdl-apalis.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-apalis.dtsi
> @@ -49,7 +49,10 @@
>  
>  	backlight: backlight {
>  		compatible = "pwm-backlight";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_gpio_bl_on>;
>  		pwms = <&pwm4 0 5000000>;
> +		enable-gpios = <&gpio3 13 GPIO_ACTIVE_HIGH>;
>  		status = "disabled";
>  	};
>  
> @@ -614,6 +617,12 @@
>  		>;
>  	};
>  
> +	pinctrl_gpio_bl_on: gpioblon {
> +		fsl,pins = <
> +			MX6QDL_PAD_EIM_DA13__GPIO3_IO13 0x1b0b0
> +		>;
> +	};
> +
>  	pinctrl_gpio_keys: gpio1io04grp {
>  		fsl,pins = <
>  			/* Power button */