diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.19.8/0975-drm-amd-display-validate-extended-dongle-caps.patch')
-rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.19.8/0975-drm-amd-display-validate-extended-dongle-caps.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/0975-drm-amd-display-validate-extended-dongle-caps.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/0975-drm-amd-display-validate-extended-dongle-caps.patch new file mode 100644 index 00000000..2438f903 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/0975-drm-amd-display-validate-extended-dongle-caps.patch @@ -0,0 +1,41 @@ +From b03526cd84439778ea89635b8f584bb5349cc917 Mon Sep 17 00:00:00 2001 +From: Wenjing Liu <Wenjing.Liu@amd.com> +Date: Wed, 5 Dec 2018 12:14:45 -0500 +Subject: [PATCH 0975/2940] drm/amd/display: validate extended dongle caps + +[why] +Some dongle doesn't have a valid extended dongle caps, +but we still set the extended dongle caps to be valid. +This causes validation fails for all timing. + +[how] +If no dp_hdmi_max_pixel_clk is provided, +don't use extended dongle caps. + +Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com> +Reviewed-by: Aric Cyr <Aric.Cyr@amd.com> +Reviewed-by: Jun Lei <Jun.Lei@amd.com> +Acked-by: Abdoulaye Berthe <Abdoulaye.Berthe@amd.com> +Acked-by: Leo Li <sunpeng.li@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +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 0999102e7130..0caacb60b02f 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 +@@ -2247,7 +2247,8 @@ static void get_active_converter_info( + translate_dpcd_max_bpc( + hdmi_color_caps.bits.MAX_BITS_PER_COLOR_COMPONENT); + +- link->dpcd_caps.dongle_caps.extendedCapValid = true; ++ if (link->dpcd_caps.dongle_caps.dp_hdmi_max_pixel_clk != 0) ++ link->dpcd_caps.dongle_caps.extendedCapValid = true; + } + + break; +-- +2.17.1 + |