c8cc0f0460
The patch 'backlight: pwm_bl: compute brightness of LED linearly to human eye' introduced a default brightness-levels table that is used when brightness-levels is not available in the dts. So move brightness-levels and default-brightness-level to be optional. Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>