Pixel clock limitation for DPI is 154 MHz. Do not accept modes
with higher pixel clock rate.
Reviewed-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
Signed-off-by: Andrey Gusakov <andrey.gusakov@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/bridge/tc358767.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
index d52cd41..948a486 100644
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -1103,7 +1103,10 @@ 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;
}
--
1.7.10.4
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