drm/i915: Power up combo PHY lanes for for HDMI as well

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@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210128155948.13678-3-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>
(cherry picked from commit 1e0cb7bef35f0d1aed383bf69a209df218b807c9)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index e39ef68..dc13d18 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -4214,6 +4214,8 @@ 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.