diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/4677-drm-amd-display-Fix-warning-observed-in-mode-change-.patch')
-rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/4677-drm-amd-display-Fix-warning-observed-in-mode-change-.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/4677-drm-amd-display-Fix-warning-observed-in-mode-change-.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/4677-drm-amd-display-Fix-warning-observed-in-mode-change-.patch new file mode 100644 index 00000000..69e9b55b --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/4677-drm-amd-display-Fix-warning-observed-in-mode-change-.patch @@ -0,0 +1,38 @@ +From e6635fc09721783e5deb63d450cd89005596f204 Mon Sep 17 00:00:00 2001 +From: "Jerry (Fangzhi) Zuo" <Jerry.Zuo@amd.com> +Date: Tue, 31 Jul 2018 15:15:38 -0400 +Subject: [PATCH 4677/5725] drm/amd/display: Fix warning observed in mode + change on Vega + +[Why] +DOUBLE_BUFFER_EN bit is getting cleared before enable blanking. +That leads to CRTC_BLANK_DATA_EN is getting updated immediately. + +[How] +Get DOUBLE_BUFFER_EN bit set, the same as DCE110. + +Change-Id: Ib88dc8b81b4e5dadca1fa086d2b509e491846396 +Signed-off-by: Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com> +Reviewed-by: Charlene Liu <Charlene.Liu@amd.com> +Acked-by: Leo Li <sunpeng.li@amd.com> +Acked-by: Junwei Zhang <Jerry.Zhang@amd.com> +--- + drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c b/drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c +index 2ea490f..04b866f 100644 +--- a/drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c ++++ b/drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c +@@ -772,7 +772,7 @@ void dce120_tg_set_blank(struct timing_generator *tg, + + CRTC_REG_SET( + CRTC0_CRTC_DOUBLE_BUFFER_CONTROL, +- CRTC_BLANK_DATA_DOUBLE_BUFFER_EN, 0); ++ CRTC_BLANK_DATA_DOUBLE_BUFFER_EN, 1); + + if (enable_blanking) + CRTC_REG_SET(CRTC0_CRTC_BLANK_CONTROL, CRTC_BLANK_DATA_EN, 1); +-- +2.7.4 + |