• Tony Lindgren's avatar
    ARM: dts: droid4: Configure LED backlight for lm3532 · 10dc62d0
    Tony Lindgren authored
    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: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
    Acked-by: default avatarPavel Machek <pavel@ucw.cz>
    Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
    10dc62d0
omap2plus_defconfig 12.9 KB