From: David Plowman <david.plowman@raspberrypi.com>
Date: Mon, 22 Dec 2025 08:15:27 +0000 (+0530)
Subject: media: i2c: ov5647: Correct minimum VBLANK value
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1438248c5a82c86b4e1f0311c3bb827af747a8cf;p=thirdparty%2Fkernel%2Flinux.git

media: i2c: ov5647: Correct minimum VBLANK value

Trial and error reveals that the minimum vblank value appears to be 24
(the OV5647 data sheet does not give any clues). This fixes streaming
lock-ups in full resolution mode.

Fixes: 2512c06441e3 ("media: ov5647: Support V4L2_CID_VBLANK control")
Cc: stable@vger.kernel.org
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jai Luthra <jai.luthra@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
---

diff --git a/drivers/media/i2c/ov5647.c b/drivers/media/i2c/ov5647.c
index d9e300406f58e..191954497e3db 100644
--- a/drivers/media/i2c/ov5647.c
+++ b/drivers/media/i2c/ov5647.c
@@ -73,7 +73,7 @@
 #define OV5647_PIXEL_ARRAY_WIDTH	2592U
 #define OV5647_PIXEL_ARRAY_HEIGHT	1944U
 
-#define OV5647_VBLANK_MIN		4
+#define OV5647_VBLANK_MIN		24
 #define OV5647_VTS_MAX			32767
 
 #define OV5647_EXPOSURE_MIN		4