1 files changed, 32 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3648-drm-amd-display-fix-dcn1-dppclk-when-min-dispclk-pat.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3648-drm-amd-display-fix-dcn1-dppclk-when-min-dispclk-pat.patch
new file mode 100644
index 00000000..3d99c03e
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3648-drm-amd-display-fix-dcn1-dppclk-when-min-dispclk-pat.patch
@@ -0,0 +1,32 @@
+From a8fc69017bcf7e0617c770dc221cc43978a964d2 Mon Sep 17 00:00:00 2001
+From: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
+Date: Wed, 21 Feb 2018 15:10:02 -0500
+Subject: [PATCH 3648/4131] drm/amd/display: fix dcn1 dppclk when min dispclk
+ patch applies
+
+Applying min dispclk patch would result in incorrect dppclk divider
+without this change
+
+Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
+Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
+Acked-by: Harry Wentland <harry.wentland@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 f1d8db5..8020bc7 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];
+-- 
+2.7.4
+