@@ -2664,12 +2664,16 @@ enum aux_ch intel_bios_port_aux_ch(struct drm_i915_private *dev_priv,
aux_ch = AUX_CH_B;
break;
case DP_AUX_C:
+ /*
+ * RKL/DG1 VBT uses PHY based mapping. Combo PHYs A,B,C,D
+ * map to DDI A,B,TC1,TC2 respectively.
+ */
aux_ch = (IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv)) ?
- AUX_CH_D : AUX_CH_C;
+ AUX_CH_USBC1 : AUX_CH_C;
break;
case DP_AUX_D:
aux_ch = (IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv)) ?
- AUX_CH_E : AUX_CH_D;
+ AUX_CH_USBC2 : AUX_CH_D;
break;
case DP_AUX_E:
aux_ch = AUX_CH_E;