[PATCH 2/6] drm/bridge: tc358767: filter out too high modes

[Andrey Gusakov]

Minimum pixel clock period is 6.5 nS for DPI. Do not accept  modes
with lower pixel clock period.

Signed-off-by: Andrey Gusakov <andrey.gusakov at cogentembedded.com>
---
 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 f605bb7d1aa3..e8008e0c2e88 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 */
+	/* PCLK limitation = 6.5 nS */
+	if (mode->clock > 163000)
+		return MODE_CLOCK_HIGH;
+
 	return MODE_OK;
 }
 
-- 
2.13.0