arm64: dts: renesas: r8a77990: ebisu: Add backlight

Add the backlight device for the LVDS1 output, in preparation for panel
support.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Ulrich Hecht <uli+renesas@fpond.eu>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts b/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts
index 62bdddc..24beb0e 100644 (file)
--- a/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts
+++ b/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts
@@ -39,6 +39,16 @@
                clock-frequency = <11289600>;
        };
 
+       backlight: backlight {
+               compatible = "pwm-backlight";
+               pwms = <&pwm3 0 50000>;
+
+               brightness-levels = <512 511 505 494 473 440 392 327 241 133 0>;
+               default-brightness-level = <10>;
+
+               power-supply = <&reg_12p0v>;
+       };
+
        cvbs-in {
                compatible = "composite-video-connector";
                label = "CVBS IN";
@@ -184,6 +194,15 @@
                clock-frequency = <24576000>;
        };
 
+       reg_12p0v: regulator1 {
+               compatible = "regulator-fixed";
+               regulator-name = "D12.0V";
+               regulator-min-microvolt = <12000000>;
+               regulator-max-microvolt = <12000000>;
+               regulator-boot-on;
+               regulator-always-on;
+       };
+
        x13_clk: x13 {
                compatible = "fixed-clock";
                #clock-cells = <0>;