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;a=summary
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@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Thu Feb 1 13:45:42 CET 2018
From: Andrey Gusakov <andrey.gusakov@xxxxxxxxxxxxxxxxxx>
Date: Tue, 7 Nov 2017 19:56:20 +0300
Subject: drm/bridge: tc358767: filter out too high modes
From: Andrey Gusakov <andrey.gusakov@xxxxxxxxxxxxxxxxxx>
[ 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@xxxxxxxxxxx>
Signed-off-by: Andrey Gusakov <andrey.gusakov@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/1510073785-16108-3-git-send-email-andrey.gusakov@xxxxxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxxxxxxxxxxxx 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