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Date: Wed, 16 Mar 2022 11:13:27 -0400 From: Nícolas F. R. A. Prado <nfraprado@...labora.com> To: Matthias Brugger <matthias.bgg@...il.com> Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, kernel@...labora.com, Nícolas F. R. A. Prado <nfraprado@...labora.com>, Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org Subject: [PATCH v1 10/10] arm64: dts: mediatek: spherion: Add keyboard backlight The Spherion board has keyboard backlight controlled by the PWM signal generated by the ChromeOS EC. Enable PWM output for ChromeOS EC and add a PWM controlled LED node for the keyboard backlight. Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com> --- .../dts/mediatek/mt8192-asurada-spherion-r0.dts | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada-spherion-r0.dts b/arch/arm64/boot/dts/mediatek/mt8192-asurada-spherion-r0.dts index 20ae4a869c63..b9dd5fd2e964 100644 --- a/arch/arm64/boot/dts/mediatek/mt8192-asurada-spherion-r0.dts +++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada-spherion-r0.dts @@ -4,12 +4,28 @@ */ /dts-v1/; #include "mt8192-asurada.dtsi" +#include <dt-bindings/leds/common.h> / { model = "MediaTek Spherion (rev0 - 3)"; compatible = "google,spherion-rev3", "google,spherion-rev2", "google,spherion-rev1", "google,spherion-rev0", "google,spherion", "mediatek,mt8192"; + + pwmleds { + compatible = "pwm-leds"; + + led { + function = LED_FUNCTION_KBD_BACKLIGHT; + color = <LED_COLOR_ID_WHITE>; + pwms = <&cros_ec_pwm 0>; + max-brightness = <1023>; + }; + }; +}; + +&cros_ec_pwm { + status = "okay"; }; &touchscreen { -- 2.35.1
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