diff options
| author | Kuogee Hsieh <quic_khsieh@quicinc.com> | 2022-01-25 00:17:54 +0100 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2022-02-18 16:32:58 +0100 |
| commit | d4aca422539c441a7f3fec749287b36de37d9b6b (patch) | |
| tree | cbc9a55a00fc43ec30a7185f4a7ff6a65dc71878 /drivers/gpu/drm/msm/dp/dp_panel.c | |
| parent | drm/msm/dp: stop link training after link training 2 failed (diff) | |
| download | linux-d4aca422539c441a7f3fec749287b36de37d9b6b.tar.xz linux-d4aca422539c441a7f3fec749287b36de37d9b6b.zip | |
drm/msm/dp: always add fail-safe mode into connector mode list
Some of DP link compliant test expects to return fail-safe mode
if prefer detailed timing mode can not be supported by mainlink's
lane and rate after link training. Therefore add fail-safe mode
into connector mode list as backup mode. This patch fixes test
case 4.2.2.1.
Changes in v2:
-- add Fixes text string
Fixes: 4b85d405cfe9 ( "drm/msm/dp: reduce link rate if failed at link training 1")
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/1643066274-25814-1-git-send-email-quic_khsieh@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Diffstat (limited to 'drivers/gpu/drm/msm/dp/dp_panel.c')
| -rw-r--r-- | drivers/gpu/drm/msm/dp/dp_panel.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/dp/dp_panel.c b/drivers/gpu/drm/msm/dp/dp_panel.c index 71db10c0f262..f1418722c549 100644 --- a/drivers/gpu/drm/msm/dp/dp_panel.c +++ b/drivers/gpu/drm/msm/dp/dp_panel.c @@ -212,6 +212,11 @@ int dp_panel_read_sink_caps(struct dp_panel *dp_panel, if (drm_add_modes_noedid(connector, 640, 480)) drm_set_preferred_mode(connector, 640, 480); mutex_unlock(&connector->dev->mode_config.mutex); + } else { + /* always add fail-safe mode as backup mode */ + mutex_lock(&connector->dev->mode_config.mutex); + drm_add_modes_noedid(connector, 640, 480); + mutex_unlock(&connector->dev->mode_config.mutex); } if (panel->aux_cfg_update_done) { |