From b5e5adad5c45da6885198380d617e49a9df56ef7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20Jirman?= <megi@xff.cz>
Date: Mon, 7 Jun 2021 20:23:52 +0200
Subject: [PATCH 181/463] arm64: dts: sun50i-a64-pinephone: Set minimum
 backlight duty cycle to 10%

Instead of creating our own table, use existing lth_brightness
functionality in the pwm_bl driver.

Signed-off-by: Ondrej Jirman <megi@xff.cz>
---
 .../dts/allwinner/sun50i-a64-pinephone-1.1.dts  | 16 +---------------
 .../dts/allwinner/sun50i-a64-pinephone-1.2.dts  | 17 +----------------
 2 files changed, 2 insertions(+), 31 deletions(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts
index d67f31ef529ee..63ceae07a0e0d 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts
@@ -26,21 +26,7 @@ &axp803 {
 
 &backlight {
 	power-supply = <&reg_ldo_io0>;
-	/*
-	 * PWM backlight circuit on this PinePhone revision was changed since
-	 * 1.0, and the lowest PWM duty cycle that doesn't lead to backlight
-	 * being off is around 20%. Duty cycle for the lowest brightness level
-	 * also varries quite a bit between individual boards, so the lowest
-	 * value here was chosen as a safe default.
-	 */
-	brightness-levels = <
-		774  793  814  842
-		882  935  1003 1088
-		1192 1316 1462 1633
-		1830 2054 2309 2596
-		2916 3271 3664 4096>;
-	num-interpolated-steps = <50>;
-	default-brightness-level = <400>;
+	lth-brightness = <10>;
 };
 
 &codec_analog {
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.2.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.2.dts
index 5e988230e6e4e..d28a23e982321 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.2.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.2.dts
@@ -17,22 +17,7 @@ wifi_pwrseq: wifi-pwrseq {
 
 &backlight {
 	power-supply = <&reg_ldo_io0>;
-	/*
-	 * PWM backlight circuit on this PinePhone revision was changed since 1.0,
-	 * and the lowest PWM duty cycle that doesn't lead to backlight being off
-	 * is around 10%. Duty cycle for the lowest brightness level also varries
-	 * quite a bit between individual boards, so the lowest value here was
-	 * chosen as a safe default.
-	 */
-	brightness-levels = <
-		5000 5248 5506 5858 6345
-		6987 7805 8823 10062 11543
-		13287 15317 17654 20319 23336
-		26724 30505 34702 39335 44427
-		50000
-	>;
-	num-interpolated-steps = <50>;
-	default-brightness-level = <500>;
+	lth-brightness = <10>;
 };
 
 &lis3mdl {
-- 
2.46.0

