From bebbeaca841b999f90742a5f391d449ff37a7204 Mon Sep 17 00:00:00 2001 From: Rodrigo Vivi Date: Wed, 11 Nov 2015 11:37:09 -0800 Subject: [PATCH] drm/i915: PSR: Don't Skip aux handshake on DP_PSR_NO_TRAIN_ON_EXIT. Since the beginning there is a confusion on the meaning of this bit. A previous patch had identified this already and fixed it partially: 'commit 3301d409 ("drm/i915: PSR: Fix DP_PSR_NO_TRAIN_ON_EXIT logic") DP_PSR_NO_TRAIN_ON_EXIT means the source doesn't need to do the training, but it doesn't tell to avoid TP patterns or to skip aux handshake. This patch fixes the hard freeze reported. Reference: https://bugs.freedesktop.org/show_bug.cgi?id=91436 Reference: https://bugs.freedesktop.org/show_bug.cgi?id=91437 Cc: Ivan Mitev Signed-off-by: Rodrigo Vivi Reviewed-by: Durgadoss R Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_psr.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c index 715a48b..c4a6371 100644 --- a/drivers/gpu/drm/i915/intel_psr.c +++ b/drivers/gpu/drm/i915/intel_psr.c @@ -287,7 +287,6 @@ static void hsw_psr_enable_source(struct intel_dp *intel_dp) send the minimal TP1 possible and skip TP2. */ val |= EDP_PSR_TP1_TIME_100us; val |= EDP_PSR_TP2_TP3_TIME_0us; - val |= EDP_PSR_SKIP_AUX_EXIT; /* Sink should be able to train with the 5 or 6 idle patterns */ idle_frames += 4; } -- 2.7.4