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authorWenjing Liu <Wenjing.Liu@amd.com>2018-12-05 12:14:45 -0500
committerAlex Deucher <alexander.deucher@amd.com>2018-12-20 12:13:18 -0500
commit99b922f9ed6a6313c0d2247cde8aa1e4a0bd67e4 (patch)
treeaf9a0358b78c8d246a3a57ed713535d5e25f7b68 /drivers/gpu/drm
parent9136e81e986a7a44bd360a2d2abf19de886feaa8 (diff)
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>
Diffstat (limited to 'drivers/gpu/drm')
-rw-r--r--drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c3
1 files changed, 2 insertions, 1 deletions
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;