[PATCH 2/2] drm/i915/icl: Add missing combo PHY lane power setup

[Imre Deak <imre.deak@intel.com>]

This step of the BSpec combo PHY port enabling is missing, so add it
now.

Reported-by: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Madhav Chauhan <madhav.chauhan@intel.com>
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
---
 drivers/gpu/drm/i915/intel_ddi.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index f181c26f62fd..d8d2e58e9811 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -3111,6 +3111,15 @@ static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder,
 	else
 		intel_prepare_dp_ddi_buffers(encoder, crtc_state);
 
+	if (intel_port_is_combophy(dev_priv, port)) {
+		bool lane_reversal =
+			dig_port->saved_port_bits & DDI_BUF_PORT_REVERSAL;
+
+		icl_combo_phy_power_up_lanes(dev_priv, port,
+					     crtc_state->lane_count,
+					     lane_reversal);
+	}
+
 	intel_ddi_init_dp_buf_reg(encoder);
 	if (!is_mst)
 		intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
-- 
2.13.2

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