diff options
| author | Andrey Gusakov <andrey.gusakov@cogentembedded.com> | 2017-11-07 19:56:20 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-03 17:05:39 +0100 |
| commit | 8d4bfe89aacf5dbe66fa6dd26587c7d11a9f6a7a (patch) | |
| tree | 8a50bdd0aeef2d5fa3c006ef7e7da6b5be7c5f78 | |
| parent | 5f6a0441ca0d5dbf64ee56743028b8a9ca932e48 (diff) | |
drm/bridge: tc358767: filter out too high modes
[ Upstream commit 99fc8e963a4c0203dba26a77cf737db6081bca14 ]
Pixel clock limitation for DPI is 154 MHz. Do not accept modes
with higher pixel clock rate.
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1510073785-16108-3-git-send-email-andrey.gusakov@cogentembedded.com
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/bridge/tc358767.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index 14b4e58f727f..97087f962363 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -1109,7 +1109,10 @@ static bool tc_bridge_mode_fixup(struct drm_bridge *bridge, static int tc_connector_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { - /* Accept any mode */ + /* DPI interface clock limitation: upto 154 MHz */ + if (mode->clock > 154000) + return MODE_CLOCK_HIGH; + return MODE_OK; } |