drm/bridge: tc358767: reset voltage-swing & pre-emphasis
We need to reset DPCD voltage-swing & pre-emphasis before starting the link training, as otherwise tc358767 will use the previous values as minimums. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190528082747.3631-3-tomi.valkeinen@ti.com
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