arm64: dts: salvator-common: add 12V regulator to backlight

This fixes the warning "pwm-backlight backlight: backlight supply power
not found, using dummy regulator".

Fixes: b33be33670217533 ("arm64: dts: salvator-x: Add panel backlight support")
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/arch/arm64/boot/dts/renesas/salvator-common.dtsi b/arch/arm64/boot/dts/renesas/salvator-common.dtsi
index 4786c67..d9d8850 100644 (file)
--- a/arch/arm64/boot/dts/renesas/salvator-common.dtsi
+++ b/arch/arm64/boot/dts/renesas/salvator-common.dtsi
@@ -62,6 +62,7 @@
                brightness-levels = <256 128 64 16 8 4 0>;
                default-brightness-level = <6>;
 
+               power-supply = <&reg_12v>;
                enable-gpios = <&gpio6 7 GPIO_ACTIVE_HIGH>;
        };
 
@@ -83,6 +84,15 @@
                regulator-always-on;
        };
 
+       reg_12v: regulator2 {
+               compatible = "regulator-fixed";
+               regulator-name = "fixed-12V";
+               regulator-min-microvolt = <12000000>;
+               regulator-max-microvolt = <12000000>;
+               regulator-boot-on;
+               regulator-always-on;
+       };
+
        rsnd_ak4613: sound {
                compatible = "simple-audio-card";