[PATCH 6.18 526/752] media: i2c: ov5647: Correct minimum VBLANK value

Sasha Levin
2026-02-28T17:55:39Z

From: David Plowman <david.plowman@raspberrypi.com>

[ Upstream commit 1438248c5a82c86b4e1f0311c3bb827af747a8cf ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/media/i2c/ov5647.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

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
--
2.51.0