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Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4474-drm-amd-display-Renoir-chroma-viewport-WA-Read-the-c.patch')
-rw-r--r--meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4474-drm-amd-display-Renoir-chroma-viewport-WA-Read-the-c.patch40
1 files changed, 40 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4474-drm-amd-display-Renoir-chroma-viewport-WA-Read-the-c.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4474-drm-amd-display-Renoir-chroma-viewport-WA-Read-the-c.patch
new file mode 100644
index 00000000..9efd8311
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4474-drm-amd-display-Renoir-chroma-viewport-WA-Read-the-c.patch
@@ -0,0 +1,40 @@
+From bf8935938a1e4b88d9c1edea7ff93957b2d096e7 Mon Sep 17 00:00:00 2001
+From: Joseph Gravenor <joseph.gravenor@amd.com>
+Date: Thu, 24 Oct 2019 13:55:10 -0400
+Subject: [PATCH 4474/4736] drm/amd/display: Renoir chroma viewport WA Read the
+ correct register
+
+[why]
+Before we were reading registers specific to luma size, which caused a black line
+to appear on the screen from time to time, as although the luma row height
+is generally the same as the chroma row height for the video case, it will sometimes
+be one more
+
+[how]
+Read the register specific for the chroma size
+
+Signed-off-by: Joseph Gravenor <joseph.gravenor@amd.com>
+Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
+Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
+---
+ drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubp.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubp.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubp.c
+index d86b6b6211bc..32e8b589aeb5 100644
+--- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubp.c
++++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubp.c
+@@ -200,8 +200,8 @@ void hubp21_set_viewport(
+ int pte_row_height = 0;
+ int pte_rows = 0;
+
+- REG_GET(DCHUBP_REQ_SIZE_CONFIG,
+- PTE_ROW_HEIGHT_LINEAR, &pte_row_height);
++ REG_GET(DCHUBP_REQ_SIZE_CONFIG_C,
++ PTE_ROW_HEIGHT_LINEAR_C, &pte_row_height);
+
+ pte_row_height = 1 << (pte_row_height + 3);
+ pte_rows = (viewport_c->height / pte_row_height) + 1;
+--
+2.17.1
+