linux-kernel - Re: [PATCH v5 3/4] arm64: dts: apple: t8103: Add PWM controller

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Date:   Thu, 22 Dec 2022 12:42:59 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Sasha Finkelstein <fnkl.kernel@...il.com>,
        u.kleine-koenig@...gutronix.de, thierry.reding@...il.com,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org
Cc:     marcan@...can.st, sven@...npeter.dev, alyssa@...enzweig.io,
        asahi@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
        linux-pwm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 3/4] arm64: dts: apple: t8103: Add PWM controller

On 21/12/2022 22:06, Sasha Finkelstein wrote:
> Adds PWM controller and keyboard backlight bindings for M1 MacBooks
> 
> Signed-off-by: Sasha Finkelstein <fnkl.kernel@...il.com>
> Acked-by: Sven Peter <sven@...npeter.dev>
> ---
>  arch/arm64/boot/dts/apple/t8103-j293.dts | 19 +++++++++++++++++++
>  arch/arm64/boot/dts/apple/t8103-j313.dts | 19 +++++++++++++++++++
>  arch/arm64/boot/dts/apple/t8103.dtsi     |  9 +++++++++
>  3 files changed, 47 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/apple/t8103-j293.dts b/arch/arm64/boot/dts/apple/t8103-j293.dts
> index ecb10d237a05..43f79570b458 100644
> --- a/arch/arm64/boot/dts/apple/t8103-j293.dts
> +++ b/arch/arm64/boot/dts/apple/t8103-j293.dts
> @@ -11,6 +11,7 @@
>  
>  #include "t8103.dtsi"
>  #include "t8103-jxxx.dtsi"
> +#include <dt-bindings/leds/common.h>
>  
>  / {
>  	compatible = "apple,j293", "apple,t8103", "apple,arm-platform";
> @@ -43,3 +44,21 @@ &i2c2 {
>  &i2c4 {
>  	status = "okay";
>  };
> +
> +/ {
> +	led-controller {
> +		compatible = "pwm-leds";
> +		led-0 {
> +			pwms = <&fpwm1 0 40000>;
> +			label = "kbd_backlight";
> +			function = LED_FUNCTION_KBD_BACKLIGHT;
> +			color = <LED_COLOR_ID_WHITE>;
> +			max-brightness = <255>;
> +			default-state = "keep";
> +		};
> +	};
> +};
{ goes to the top, not in the middle of DTS. Don't add stuff at the end
of DTS.

Best regards,
Krzysztof