arm64: dts: allwinner: a64: teres-i: enable backlight

Enable pwm and add a pretty standard backlight node.

The regulator is always on, but we include it anyway, because it is
required by the binding document.

Signed-off-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-teres-i.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-teres-i.dts
index 7b7b14b..0ec46b9 100644 (file)
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-teres-i.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-teres-i.dts
@@ -21,6 +21,15 @@
                serial0 = &uart0;
        };
 
+       backlight: backlight {
+               compatible = "pwm-backlight";
+               pwms = <&pwm 0 50000 0>;
+               power-supply = <&reg_dcdc1>;
+               brightness-levels = <0 5 7 10 14 20 28 40 56 80 112>;
+               default-brightness-level = <5>;
+               enable-gpios = <&pio 3 23 GPIO_ACTIVE_HIGH>; /* PD23 */
+       };
+
        chosen {
                stdout-path = "serial0:115200n8";
 
@@ -131,6 +140,10 @@
        status = "okay";
 };
 
+&pwm {
+       status = "okay";
+};
+
 &r_rsb {
        status = "okay";