diff mbox series

[2/2] drm/msm/disp: Correct porch timing for SDM845

Message ID 20250212034225.2565069-3-james.a.macinnes@gmail.com
State New
Headers show
Series drm/msm/dp: Fix Type-C Timing | expand

Commit Message

James A. MacInnes Feb. 12, 2025, 3:42 a.m. UTC 
Type-C DisplayPort inop due to incorrect settings.

SDM845 (DPU 4.0) lacks wide_bus support; porch shift removed.

Fixes: c943b4948b58 ("drm/msm/dp: add displayPort driver support")

Signed-off-by: James A. MacInnes <james.a.macinnes@gmail.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
index abd6600046cb..3e0fef0955ce 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
@@ -94,17 +94,17 @@  static void drm_mode_to_intf_timing_params(
 		timing->vsync_polarity = 0;
 	}
 
+	timing->wide_bus_en = dpu_encoder_is_widebus_enabled(phys_enc->parent);
+	timing->compression_en = dpu_encoder_is_dsc_enabled(phys_enc->parent);
+
 	/* for DP/EDP, Shift timings to align it to bottom right */
-	if (phys_enc->hw_intf->cap->type == INTF_DP) {
+	if (phys_enc->hw_intf->cap->type == INTF_DP && timing->wide_bus_en) {
 		timing->h_back_porch += timing->h_front_porch;
 		timing->h_front_porch = 0;
 		timing->v_back_porch += timing->v_front_porch;
 		timing->v_front_porch = 0;
 	}
 
-	timing->wide_bus_en = dpu_encoder_is_widebus_enabled(phys_enc->parent);
-	timing->compression_en = dpu_encoder_is_dsc_enabled(phys_enc->parent);
-
 	/*
 	 * for DP, divide the horizonal parameters by 2 when
 	 * widebus is enabled