* [PATCH] arm64: dts: allwinner: add backlight regulator for Pinebook
@ 2018-10-09 3:46 Vasily Khoruzhick
2018-10-09 15:10 ` Maxime Ripard
0 siblings, 1 reply; 2+ messages in thread
From: Vasily Khoruzhick @ 2018-10-09 3:46 UTC (permalink / raw)
To: linux-arm-kernel
Backlight power is controlled by PH6 GPIO, so add corresponding
regulator-fixed node for it. Otherwise backlight won't light up
if bootloader doesn't enable it.
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
---
arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
index 897e60cbe38d..e2e426334cfe 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts
@@ -22,12 +22,22 @@
ethernet0 = &rtl8723cs;
};
+ vdd_bl: regulator at 0 {
+ compatible = "regulator-fixed";
+ regulator-name = "bl-3v3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ gpio = <&pio 7 6 GPIO_ACTIVE_HIGH>; /* PH6 */
+ enable-active-high;
+ };
+
backlight: backlight {
compatible = "pwm-backlight";
pwms = <&pwm 0 50000 0>;
brightness-levels = <0 5 10 15 20 30 40 55 70 85 100>;
default-brightness-level = <2>;
enable-gpios = <&pio 3 23 GPIO_ACTIVE_HIGH>; /* PD23 */
+ power-supply = <&vdd_bl>;
};
chosen {
--
2.19.0
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2018-10-09 3:46 [PATCH] arm64: dts: allwinner: add backlight regulator for Pinebook Vasily Khoruzhick
2018-10-09 15:10 ` Maxime Ripard
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