[Intel-gfx] [PATCH 3/5] drm/i915: Power up combo PHY lanes for for HDMI as well

Ville Syrjala ville.syrjala at linux.intel.com
Thu Jan 28 15:59:46 UTC 2021

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Currently we only explicitly power up the combo PHY lanes
for DP. The spec says we should do it for HDMI as well.

Cc: stable at vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
 drivers/gpu/drm/i915/display/intel_ddi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 88cc6e2fbe91..8fbeb8c24efb 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -4337,6 +4337,8 @@ static void intel_enable_ddi_hdmi(struct intel_atomic_state *state,
 		intel_de_write(dev_priv, reg, val);
+	intel_ddi_power_up_lanes(encoder, crtc_state);
 	/* In HDMI/DVI mode, the port width, and swing/emphasis values
 	 * are ignored so nothing special needs to be done besides
 	 * enabling the port.

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