This is a note to let you know that I've just added the patch titled

drm/bridge: tc358767: filter out too high modes

to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: drm-bridge-tc358767-filter-out-too-high-modes.patch and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Thu Feb 1 13:45:42 CET 2018

From: Andrey Gusakov andrey.gusakov@cogentembedded.com Date: Tue, 7 Nov 2017 19:56:20 +0300 Subject: drm/bridge: tc358767: filter out too high modes

From: Andrey Gusakov andrey.gusakov@cogentembedded.com

[ 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-em... Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/bridge/tc358767.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)

--- 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 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; }

Patches currently in stable-queue which might be from andrey.gusakov@cogentembedded.com are

queue-4.14/drm-bridge-tc358767-fix-timing-calculations.patch queue-4.14/drm-bridge-tc358767-fix-auxdatan-registers-access.patch queue-4.14/drm-bridge-tc358767-filter-out-too-high-modes.patch queue-4.14/drm-bridge-tc358767-fix-1-lane-behavior.patch queue-4.14/drm-bridge-tc358767-fix-dp0_misc-register-set.patch queue-4.14/drm-bridge-tc358767-do-no-fail-on-hi-res-displays.patch