[PATCH 06/23] drm/amd/display: Use correct pixel clock to program DTBCLK DTO's

Qingqing Zhuo qingqing.zhuo at amd.com
Thu Oct 6 21:26:33 UTC 2022


From: Dillon Varone <Dillon.Varone at amd.com>

[Why?]
Currently phy_pix_clk is used to program DTO's which is incorrect.

[How?]
Use the timing pixel clock to program DTO's correctly.

Reviewed-by: Martin Leung <Martin.Leung at amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo at amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone at amd.com>
---
 drivers/gpu/drm/amd/display/dc/link/link_hwss_hpo_dp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/link/link_hwss_hpo_dp.c b/drivers/gpu/drm/amd/display/dc/link/link_hwss_hpo_dp.c
index 7d3147175ca2..153a88381f2c 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_hwss_hpo_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_hwss_hpo_dp.c
@@ -111,7 +111,7 @@ static void setup_hpo_dp_stream_encoder(struct pipe_ctx *pipe_ctx)
 	enum phyd32clk_clock_source phyd32clk = get_phyd32clk_src(pipe_ctx->stream->link);
 
 	dto_params.otg_inst = tg->inst;
-	dto_params.pixclk_khz = pipe_ctx->stream->phy_pix_clk;
+	dto_params.pixclk_khz = pipe_ctx->stream->timing.pix_clk_100hz / 10;
 	dto_params.num_odm_segments = get_odm_segment_count(pipe_ctx);
 	dto_params.timing = &pipe_ctx->stream->timing;
 	dto_params.ref_dtbclk_khz = dc->clk_mgr->funcs->get_dtb_ref_clk_frequency(dc->clk_mgr);
-- 
2.25.1



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