[PATCH 22/33] drm/amd/display: fix dcn1 dppclk when min dispclk patch applies

Harry Wentland harry.wentland at amd.com
Mon Feb 26 20:15:52 UTC 2018


From: Dmytro Laktyushkin <Dmytro.Laktyushkin at amd.com>

Applying min dispclk patch would result in incorrect dppclk divider
without this change

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin at amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng at amd.com>
Acked-by: Harry Wentland <harry.wentland at amd.com>
---
 drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c
index f1d8db56f406..8020bc7742c1 100644
--- a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c
+++ b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c
@@ -998,7 +998,7 @@ bool dcn_validate_bandwidth(
 					dc->debug.min_disp_clk_khz;
 		}
 
-		context->bw.dcn.calc_clk.max_dppclk_khz = (int)(v->dppclk * 1000);
+		context->bw.dcn.calc_clk.max_dppclk_khz = context->bw.dcn.calc_clk.dispclk_khz / v->dispclk_dppclk_ratio;
 
 		for (i = 0, input_idx = 0; i < pool->pipe_count; i++) {
 			struct pipe_ctx *pipe = &context->res_ctx.pipe_ctx[i];
-- 
2.14.1



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