diff mbox series

[v2,4/4] ARM: dts: imx6qdl-colibri: backlight pwm: Adapt brightness steps

Message ID 20220511115911.54960-5-max.oss.09@gmail.com (mailing list archive)
State New, archived
Headers show
Series ARM: dts: imx6dl-colibri: Unify with changes to Apalis iMX6 device trees. | expand

Commit Message

Max Krummenacher May 11, 2022, 11:59 a.m. UTC 
From: Max Krummenacher <max.krummenacher@toradex.com>

Adapt the brightness steps as the backlight doesn't light up
for very low duty cycles.

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>

---

Changes in v2:
- add reviewed-by tags
- Split the Backlight PWM patch into two patches, a) #pwm-cells 3, b) adapt brightness steps
- Split to two patches as proposed by Fabio Estevam

 arch/arm/boot/dts/imx6qdl-colibri.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Fabio Estevam May 11, 2022, 12:01 p.m. UTC | #1 
On Wed, May 11, 2022 at 8:59 AM Max Krummenacher <max.oss.09@gmail.com> wrote:
>
> From: Max Krummenacher <max.krummenacher@toradex.com>
>
> Adapt the brightness steps as the backlight doesn't light up
> for very low duty cycles.
>
> Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>

Reviewed-by: Fabio Estevam <festevam@gmail.com>
diff mbox series

Patch

diff --git a/arch/arm/boot/dts/imx6qdl-colibri.dtsi b/arch/arm/boot/dts/imx6qdl-colibri.dtsi
index d91fae92c90a..023e76215064 100644
--- a/arch/arm/boot/dts/imx6qdl-colibri.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-colibri.dtsi
@@ -14,8 +14,8 @@ 
 
 	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 = <&gpio3 26 GPIO_ACTIVE_HIGH>; /* Colibri BL_ON */
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_gpio_bl_on>;