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| author | Hersen Wu <hersenxs.wu@amd.com> | 2023-05-25 08:37:40 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-06-21 16:00:56 +0200 |
| commit | ee8c6580c3106b0061c7cdff1804e5a1f1e1d7fe (patch) | |
| tree | 65387c3618fadeaf84fedf0280628ed84ac4fef2 /drivers | |
| parent | 2cb6026df193dfbbdd89c06e1259326a85da148b (diff) | |
| download | linux-ee8c6580c3106b0061c7cdff1804e5a1f1e1d7fe.tar.gz | |
drm/amd/display: edp do not add non-edid timings
commit e749dd10e5f292061ad63d2b030194bf7d7d452c upstream. [Why] most edp support only timings from edid. applying non-edid timings, especially those timings out of edp bandwidth, may damage edp. [How] do not add non-edid timings for edp. Cc: Mario Limonciello <mario.limonciello@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org Acked-by: Stylon Wang <stylon.wang@amd.com> Signed-off-by: Hersen Wu <hersenxs.wu@amd.com> Reviewed-by: Roman Li <roman.li@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 8ab0dd799b3c..fe179261f327 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -6942,7 +6942,13 @@ static int amdgpu_dm_connector_get_modes(struct drm_connector *connector) drm_add_modes_noedid(connector, 640, 480); } else { amdgpu_dm_connector_ddc_get_modes(connector, edid); - amdgpu_dm_connector_add_common_modes(encoder, connector); + /* most eDP supports only timings from its edid, + * usually only detailed timings are available + * from eDP edid. timings which are not from edid + * may damage eDP + */ + if (connector->connector_type != DRM_MODE_CONNECTOR_eDP) + amdgpu_dm_connector_add_common_modes(encoder, connector); amdgpu_dm_connector_add_freesync_modes(connector, edid); } amdgpu_dm_fbc_init(connector); |