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authorAndrey Gusakov <andrey.gusakov@cogentembedded.com>2017-11-07 19:56:20 +0300
committerAndrzej Hajda <a.hajda@samsung.com>2017-11-30 07:55:53 +0100
commit99fc8e963a4c0203dba26a77cf737db6081bca14 (patch)
tree139546726d3899a5882057ec48781800094c1ffc /drivers
parentcffd2b16c01c3431a7a7dd62e722af33490fc436 (diff)
drm/bridge: tc358767: filter out too high modes
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
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/bridge/tc358767.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
index e1996dbfb0a1..e571b5e29ae7 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;
}