git.openwrt.org Git - openwrt/staging/ldir.git/blob

   1 From d566473897f50c1531111f117d4a84fdf5729729 Mon Sep 17 00:00:00 2001
   2 From: David Lechner <david@lechnology.com>
   3 Date: Mon, 24 Apr 2023 10:15:59 -0500
   4 Subject: [PATCH] arm/boot/dts/overlays/mipi-dbi-spi: fix default
   5  brightness (#5442)
   6
   7 There is an off-by-one error in the default brightness for the PWM backlight
   8 in the MIPI DBI SPI overlay that produces the following message in the
   9 kernel logs:
  10
  11     pwm-backlight backlight_pwm: invalid default brightness level: 16, using 15
  12
  13 The value is 0-based, so the max brightness is 15, not 16.
  14
  15 Signed-off-by: David Lechner <david@lechnology.com>
  16 ---
  17  arch/arm/boot/dts/overlays/mipi-dbi-spi-overlay.dts | 2 +-
  18  1 file changed, 1 insertion(+), 1 deletion(-)
  19
  20 --- a/arch/arm/boot/dts/overlays/mipi-dbi-spi-overlay.dts
  21 +++ b/arch/arm/boot/dts/overlays/mipi-dbi-spi-overlay.dts
  22 @@ -80,7 +80,7 @@
  23                         backlight_pwm: backlight_pwm {
  24                                 compatible = "pwm-backlight";
  25                                 brightness-levels = <0 6 8 12 16 24 32 40 48 64 96 128 160 192 224 255>;
  26 -                               default-brightness-level = <16>;
  27 +                               default-brightness-level = <15>;
  28                                 pwms = <&pwm 0 200000>;
  29                         };
  30                 };