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>

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 34db7af..1bb40ec 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -4317,6 +4317,8 @@ 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.