tree 87449e8a7ab7125949f8cc07defb17ced9965f06
parent 0d0abd894ead85d20d7febe603f570d4fdd8111a
author Yakir Yang <ykk@rock-chips.com> 1455534675 +0800
committer Yakir Yang <ykk@rock-chips.com> 1459822387 +0800

drm: bridge: analogix/dp: try force hpd after plug in lookup failed

Some edp screen do not have hpd signal, so we can't just return
failed when hpd plug in detect failed.

This is an hardware property, so we need add a devicetree property
"analogix,need-force-hpd" to indicate this sutiation.

Acked-by: Rob Herring <robh@kernel.org>
Tested-by: Caesar Wang <wxt@rock-chips.com>
Tested-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Yakir Yang <ykk@rock-chips.com>