The LCD backlight for this device can be exposed as a simple GPIO-
controlled device. It would be more accurately modelled using PWM to
enable brightness control, however the PWM driver design for the H616 is
not yet upstreamed.
Add a GPIO backlight node to the DTS.
Signed-off-by: Ryan Walklin <ryan@xxxxxxxxxxxxx>
---
.../boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts b/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts
index 388487d4720e2..29d1144fc3987 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts
@@ -21,6 +21,12 @@ aliases {
serial0 = &uart0;
};
+ backlight: backlight {
+ compatible = "gpio-backlight";
+ gpios = <&pio 3 28 GPIO_ACTIVE_HIGH>; // PD28
+ default-on;
+ };
+
battery: battery {
compatible = "simple-battery";
constant-charge-current-max-microamp = <1024000>;
--
2.48.1
