From: Adam Ford <aford173@gmail.com>
Date: Sun, 13 Dec 2020 18:37:47 +0000 (-0600)
Subject: arm64: dts: renesas: beacon: Fix LVDS PWM Backlight
X-Git-Tag: v5.12-rc1~195^2~54^2~18
X-Git-Url: http://git-history.diyao.me/?a=commitdiff_plain;h=012f3e37ca134da45af742a2d7971c513cb761d9;p=linux%2F.git

arm64: dts: renesas: beacon: Fix LVDS PWM Backlight

The backlight didn't really work correctly due to some updates that were
made in hardware.  It should be safe to apply these, because the older
hardware was never shipped to anyone, so it shouldn't break anything.

Signed-off-by: Adam Ford <aford173@gmail.com>
Link: https://lore.kernel.org/r/20201213183759.223246-8-aford173@gmail.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

diff --git a/arch/arm64/boot/dts/renesas/beacon-renesom-baseboard.dtsi b/arch/arm64/boot/dts/renesas/beacon-renesom-baseboard.dtsi
index 759734b7715b..12a9f1434983 100644
--- a/arch/arm64/boot/dts/renesas/beacon-renesom-baseboard.dtsi
+++ b/arch/arm64/boot/dts/renesas/beacon-renesom-baseboard.dtsi
@@ -10,8 +10,8 @@ / {
 	backlight_lvds: backlight-lvds {
 		compatible = "pwm-backlight";
 		power-supply = <&reg_lcd>;
-		enable-gpios = <&gpio_exp1 3 GPIO_ACTIVE_LOW>;
-		pwms = <&pwm2 0 50000>;
+		enable-gpios = <&gpio_exp1 3 GPIO_ACTIVE_HIGH>;
+		pwms = <&pwm2 0 25000>;
 		brightness-levels = <0 4 8 16 32 64 128 255>;
 		default-brightness-level = <6>;
 	};
@@ -118,9 +118,9 @@ panel-timing {
 			hback-porch = <40>;
 			vfront-porch = <13>;
 			vback-porch = <29>;
-			vsync-len = <3>;
+			vsync-len = <1>;
 			hsync-active = <1>;
-			vsync-active = <1>;
+			vsync-active = <3>;
 			de-active = <1>;
 			pixelclk-active = <0>;
 		};
@@ -541,7 +541,7 @@ pwm0_pins: pwm0 {
 
 	pwm2_pins: pwm2 {
 		groups = "pwm2_a";
-		function = "pwm2_a";
+		function = "pwm2";
 	};
 
 	sdhi0_pins: sd0 {