From c4a27288520d35e7e6acc6e36fba4585e1bddde6 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Tue, 7 Jul 2015 21:14:12 +0200 Subject: [PATCH] drm/tegra: dp: Enable alternate scrambler reset when supported If the sink is eDP and supports the alternate scrambler reset, enable it. Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/dp.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/tegra/dp.c b/drivers/gpu/drm/tegra/dp.c index ca287b50fad8..638081b568f4 100644 --- a/drivers/gpu/drm/tegra/dp.c +++ b/drivers/gpu/drm/tegra/dp.c @@ -225,5 +225,12 @@ int drm_dp_link_configure(struct drm_dp_aux *aux, struct drm_dp_link *link) if (err < 0) return err; + if (link->caps.alternate_scrambler_reset) { + err = drm_dp_dpcd_writeb(aux, DP_EDP_CONFIGURATION_SET, + DP_ALTERNATE_SCRAMBLER_RESET_ENABLE); + if (err < 0) + return err; + } + return 0; } -- 2.11.0