Re: [PATCH] backlight: ktd253: Bring up in a known state

On Tue, Jan 26, 2021 at 10:32:00PM +0100, Linus Walleij wrote:

The KTD253 backlight might already be on when the driver is probed: then we don't really know what the current ratio is and all light intensity settings will be off relative to what it was at boot.

To fix this, bring up the backlight OFF then move it to the default backlight from there so we know the state.

Signed-off-by: Linus Walleij linus.walleij@linaro.org

Hmnnn... horid, since the backlight will flicker during boot, but I recall that this bit of hardware is pretty horid anyway so it is not easily avoided.

Therefore, slightly grudgingly, Reviewed-by: Daniel Thompson daniel.thompson@linaro.org

Daniel.