diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1095-drm-amd-display-Fixed-MST-wrong-link-settings-for-ed.patch')
-rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1095-drm-amd-display-Fixed-MST-wrong-link-settings-for-ed.patch | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1095-drm-amd-display-Fixed-MST-wrong-link-settings-for-ed.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1095-drm-amd-display-Fixed-MST-wrong-link-settings-for-ed.patch new file mode 100644 index 00000000..7ad80906 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/1095-drm-amd-display-Fixed-MST-wrong-link-settings-for-ed.patch @@ -0,0 +1,57 @@ +From 0b27b3a993efc981fc9cfe3f22ec9113a59ea0a4 Mon Sep 17 00:00:00 2001 +From: "Jerry (Fangzhi) Zuo" <Jerry.Zuo@amd.com> +Date: Wed, 3 Jan 2018 13:56:13 -0500 +Subject: [PATCH 1095/4131] drm/amd/display: Fixed MST wrong link settings for + edp + +Signed-off-by: Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com> +Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com> +Acked-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/display/dc/core/dc_link.c | 10 +++------- + drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 8 ++++++++ + 2 files changed, 11 insertions(+), 7 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c +index 232249a..d6cc3b3 100644 +--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c ++++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c +@@ -679,13 +679,9 @@ bool dc_link_detect(struct dc_link *link, bool boot) + * TODO debug why Dell 2413 doesn't like + * two link trainings + */ +- if (is_mst_supported(link)) { +- link->verified_link_cap = +- link->reported_link_cap; +- } else { +- dp_hbr_verify_link_cap(link, +- &link->reported_link_cap); +- } ++ ++ /* deal with non-mst cases */ ++ dp_hbr_verify_link_cap(link, &link->reported_link_cap); + } + + /* HDMI-DVI Dongle */ +diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +index 9d5fe65..77dce1f 100644 +--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c ++++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +@@ -1460,6 +1460,14 @@ void decide_link_settings(struct dc_stream_state *stream, + return; + } + ++ /* MST doesn't perform link training for now ++ * TODO: add MST specific link training routine ++ */ ++ if (is_mst_supported(link)) { ++ *link_setting = link->verified_link_cap; ++ return; ++ } ++ + /* search for the minimum link setting that: + * 1. is supported according to the link training result + * 2. could support the b/w requested by the timing +-- +2.7.4 + |