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authorTony Lindgren <tony@atomide.com>2020-02-19 11:25:27 -0800
committerTony Lindgren <tony@atomide.com>2020-02-20 06:51:13 -0800
commit10dc62d0ae4167770e9ab150fc1ab55baa82e010 (patch)
treeaf9a9b986155375a8c4bba408400eac89d418603 /arch/arm/configs
parentae232e45acf9621f2c96b41ca3af006ac7552c33 (diff)
ARM: dts: droid4: Configure LED backlight for lm3532
With the LED backlight changes merged, we still need the dts configured to have backlight working for droid4. Based on an earlier patch from Pavel Machek <pavel@ucw.cz>, let's configure the backlight but update the value range to be more usable. We have a range of 256 register values split into 8 steps, so we can generate the brightness levels backwards with: $ for i in 0 1 2 3 4 5 6 7; do echo "255 - ${i} * (256 / 8)" | bc; done To avoid more confusion why the LCD backlight is still not on, let's also enable LED backlight as a loadable module for omap2plus_defconfig. Cc: Merlijn Wajer <merlijn@wizzup.org> Cc: Pavel Machek <pavel@ucw.cz> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/configs')
-rw-r--r--arch/arm/configs/omap2plus_defconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/configs/omap2plus_defconfig b/arch/arm/configs/omap2plus_defconfig
index c32c338f7704..847f9874ccc4 100644
--- a/arch/arm/configs/omap2plus_defconfig
+++ b/arch/arm/configs/omap2plus_defconfig
@@ -375,6 +375,7 @@ CONFIG_BACKLIGHT_GENERIC=m
CONFIG_BACKLIGHT_PWM=m
CONFIG_BACKLIGHT_PANDORA=m
CONFIG_BACKLIGHT_GPIO=m
+CONFIG_BACKLIGHT_LED=m
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
CONFIG_LOGO=y