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.
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 5 ++++-
1 file changed, 4 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..ec5f0534f4df 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -577,7 +577,10 @@ intel_ddi_transcoder_func_reg_val_get(struct intel_encoder *encoder,
temp |= TRANS_DDI_MST_TRANSPORT_SELECT(master);
}
} else {
- temp |= TRANS_DDI_MODE_SELECT_DP_SST;
+ if (intel_dp_is_uhbr(crtc_state))
+ temp |= TRANS_DDI_MODE_SELECT_FDI_OR_128B132B;
+ else
+ temp |= TRANS_DDI_MODE_SELECT_DP_SST;
temp |= DDI_PORT_WIDTH(crtc_state->lane_count);
}
--
2.39.5
