From mboxrd@z Thu Jan 1 00:00:00 1970 From: heiko@sntech.de (Heiko Stuebner) Date: Tue, 10 Nov 2015 15:18:10 +0100 Subject: [PATCH v4] pwm-backlight: Avoid backlight flicker when probed from DT In-Reply-To: <1446483356-14338-1-git-send-email-p.zabel@pengutronix.de> References: <1446483356-14338-1-git-send-email-p.zabel@pengutronix.de> Message-ID: <3447562.c3gSANEMio@phil> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi Philipp, Am Montag, 2. November 2015, 17:55:56 schrieb Philipp Zabel: > If the driver is probed from the device tree, and there is a phandle > property set on it, and the enable GPIO is already configured as output, > and the backlight is currently disabled, keep it disabled. > If all these conditions are met, assume there will be some other driver > that can enable the backlight at the appropriate time. > > Signed-off-by: Philipp Zabel > Reviewed-by: Christian Gmeiner this patch improves the white screen when booting a veyron chromebook a lot. I still see a small white flash, but that can probably come from the WIP edp driver. Tested-by: Heiko Stuebner