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];