arm64: dts: renesas: hihope-rzg2-ex: Enable backlight

This patch enables backlight support.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/1570029619-43238-8-git-send-email-biju.das@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

diff --git a/arch/arm64/boot/dts/renesas/hihope-rzg2-ex.dtsi b/arch/arm64/boot/dts/renesas/hihope-rzg2-ex.dtsi
index 4280b19..70f9a2a 100644 (file)
--- a/arch/arm64/boot/dts/renesas/hihope-rzg2-ex.dtsi
+++ b/arch/arm64/boot/dts/renesas/hihope-rzg2-ex.dtsi
@@ -13,6 +13,14 @@
        chosen {
                bootargs = "ignore_loglevel rw root=/dev/nfs ip=on";
        };
+
+       backlight {
+               compatible = "pwm-backlight";
+               pwms = <&pwm0 0 50000>;
+
+               brightness-levels = <0 2 8 16 32 64 128 255>;
+               default-brightness-level = <6>;
+       };
 };
 
 &avb {
@@ -82,4 +90,16 @@
                groups = "can1_data";
                function = "can1";
        };
+
+       pwm0_pins: pwm0 {
+               groups = "pwm0";
+               function = "pwm0";
+       };
+};
+
+&pwm0 {
+       pinctrl-0 = <&pwm0_pins>;
+       pinctrl-names = "default";
+
+       status = "okay";
 };