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

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commit fad9bae9ee5d578afbe6380c82e4715efaddf118 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ville Syrjälä 2021-01-28 17:59:46 +02:00 committed by Greg Kroah-Hartman
parent 24946da51c
commit 09c6d51b16
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/i915/display/intel_ddi.c
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@ -3936,6 +3936,8 @@ 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.