From: Ville Syrjälä <ville.syrj...@linux.intel.com>
As with the VBT DVO port, RKL uses PHY based mapping for the
VBT AUX CH. Adjust the code to use the new AUX_USBCn names
and add a comment to explain the situation.
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
drivers/gpu/drm/i915/display/intel_bios.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c
b/drivers/gpu/drm/i915/display/intel_bios.c
index 179029c3d3d5..77c86f51c36d 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -2636,10 +2636,14 @@ enum aux_ch intel_bios_port_aux_ch(struct
drm_i915_private *dev_priv,
aux_ch = AUX_CH_B;
break;
case DP_AUX_C:
- aux_ch = IS_ROCKETLAKE(dev_priv) ? AUX_CH_D : AUX_CH_C;
+ /*
+ * RKL VBT uses PHY based mapping. Combo PHYs A,B,C,D
+ * map to DDI A,B,TC1,TC2 respectively.
+ */
+ aux_ch = IS_ROCKETLAKE(dev_priv) ? AUX_CH_USBC1 : AUX_CH_C;
break;
case DP_AUX_D:
- aux_ch = IS_ROCKETLAKE(dev_priv) ? AUX_CH_E : AUX_CH_D;
+ aux_ch = IS_ROCKETLAKE(dev_priv) ? AUX_CH_USBC2 : AUX_CH_D;
break;
case DP_AUX_E:
aux_ch = AUX_CH_E;
--
2.26.2
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