[PATCH v2 4/8] ARM: dts: imx6ull-colibri: Align backlight brightness levels with Colibri iMX7

[Francesco Dolcini <francesco@dolcini.it>]

From: Francesco Dolcini <francesco.dolcini@toradex.com>

The LED driver of the Toradex 7" parallel displays turns the backlight
off below roughly 15% PWM duty cycle, with the current brightness levels
only the three highest ones produce a visible image.

Use the same brightness levels as on the Colibri iMX7, which is used with
the same displays, keeping the default brightness at about the same
value.

Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
---
v2: no changes
---
 arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
index 1eb1cf2d7395..dd2dc23f0cf1 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
@@ -14,8 +14,8 @@ aliases {
 
 	backlight: backlight {
 		compatible = "pwm-backlight";
-		brightness-levels = <0 4 8 16 32 64 128 255>;
-		default-brightness-level = <6>;
+		brightness-levels = <0 45 63 88 119 158 203 255>;
+		default-brightness-level = <4>;
 		enable-gpios = <&gpio1 11 GPIO_ACTIVE_HIGH>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_gpio_bl_on>;
-- 
2.47.3