128b/132b SST needs 128b/132b mode enabled in the TRANS_DDI_FUNC_CTL
register.
This is preparation for enabling 128b/132b SST. This path is not
reachable yet.
v2: Use the MST path instead of SST to also set transport select (Imre)
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 4f9c50996446..ce34a619d48a 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -561,7 +561,8 @@ intel_ddi_transcoder_func_reg_val_get(struct intel_encoder *encoder,
} else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG)) {
temp |= TRANS_DDI_MODE_SELECT_FDI_OR_128B132B;
temp |= (crtc_state->fdi_lanes - 1) << 1;
- } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST)) {
+ } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST) ||
+ intel_dp_is_uhbr(crtc_state)) {
if (intel_dp_is_uhbr(crtc_state))
temp |= TRANS_DDI_MODE_SELECT_FDI_OR_128B132B;
else
--
2.39.5
