diff options
Diffstat (limited to 'meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/0987-drm-amd-display-Fix-two-MST-not-light-up-regressions.patch')
-rw-r--r-- | meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/0987-drm-amd-display-Fix-two-MST-not-light-up-regressions.patch | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/0987-drm-amd-display-Fix-two-MST-not-light-up-regressions.patch b/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/0987-drm-amd-display-Fix-two-MST-not-light-up-regressions.patch deleted file mode 100644 index dea227dc..00000000 --- a/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/0987-drm-amd-display-Fix-two-MST-not-light-up-regressions.patch +++ /dev/null @@ -1,81 +0,0 @@ -From e0dc0c4ec53de6cfcad4425008e4b320039fd39e Mon Sep 17 00:00:00 2001 -From: Jerry Zuo <Jerry.Zuo@amd.com> -Date: Thu, 17 Aug 2017 16:05:37 -0400 -Subject: [PATCH 0987/4131] drm/amd/display: Fix two MST not light up - regressions - -1. Change 100104: Move verify link cap after read edid causes MST - link_cap struct not being set. It leads to zero denominator - pbn_per_slot value, leading to the crash at - dal_fixed31_32_div(). Skip MST link training for now and will - need to add MST specific link traning routine later. - -2. Change 98822: Adding edp supports changes link setting - condition from max_link to verified_link. It leads to MST is - getting wrong link settings. - e.g. LINK_SPREAD_05_DOWNSPREAD_30KHZ not set in MST case - -Signed-off-by: Jerry Zuo <Jerry.Zuo@amd.com> -Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> -Acked-by: Harry Wentland <Harry.Wentland@amd.com> ---- - drivers/gpu/drm/amd/display/dc/core/dc_link.c | 16 +++++++++------- - drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 8 ++++++++ - 2 files changed, 17 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 cab54af..ee9b984 100644 ---- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c -+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c -@@ -607,6 +607,12 @@ bool dc_link_detect(struct dc_link *link, bool boot) - if (link->type == dc_connection_mst_branch) { - LINK_INFO("link=%d, mst branch is now Connected\n", - link->link_index); -+ /* Need to setup mst link_cap struct here -+ * otherwise dc_link_detect() will leave mst link_cap -+ * empty which leads to allocate_mst_payload() has "0" -+ * pbn_per_slot value leading to exception on dal_fixed31_32_div() -+ */ -+ link->verified_link_cap = link->reported_link_cap; - return false; - } - -@@ -672,13 +678,9 @@ 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 d621237..e35bdce 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 -@@ -1459,6 +1459,14 @@ 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 - |