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[02/44] arm64: dts: renesas: r8a77995: draak: Set better backlight levels

Message ID a06ad4385f180b476ceca811a60ba00f3f65c12e.1548233325.git.horms+renesas@verge.net.au (mailing list archive)
State Accepted
Commit a06ad4385f180b476ceca811a60ba00f3f65c12e
Delegated to: Simon Horman
Headers show
Series [GIT,PULL] Renesas ARM64 Based SoC DT Updates for v5.1 | expand

Commit Message

Simon Horman Jan. 24, 2019, 3:11 p.m. UTC 
From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

The backlight levels provided in the Draak DT produce a perceived
brightness very biased towards high brightness. Use better brightness
levels based on the CIE 1931 formula.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Ulrich Hecht <uli+renesas@fpond.eu>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 arch/arm64/boot/dts/renesas/r8a77995-draak.dts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/renesas/r8a77995-draak.dts b/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
index 89df9bc844c0..db2bed1751b8 100644
--- a/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
+++ b/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
@@ -28,8 +28,8 @@ 
 		compatible = "pwm-backlight";
 		pwms = <&pwm1 0 50000>;
 
-		brightness-levels = <256 128 64 16 8 4 0>;
-		default-brightness-level = <6>;
+		brightness-levels = <512 511 505 494 473 440 392 327 241 133 0>;
+		default-brightness-level = <10>;
 
 		power-supply = <&reg_12p0v>;
 		enable-gpios = <&gpio4 0 GPIO_ACTIVE_HIGH>;