linux-kernel - [PATCH AUTOSEL 6.12 339/486] media: i2c: imx219: Correct the minimum vblanking value

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Message-Id: <20250505223922.2682012-339-sashal@kernel.org>
Date: Mon,  5 May 2025 18:36:55 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: David Plowman <david.plowman@...pberrypi.com>,
	Jacopo Mondi <jacopo.mondi@...asonboard.com>,
	Dave Stevenson <dave.stevenson@...pberrypi.com>,
	Jai Luthra <jai.luthra@...asonboard.com>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Hans Verkuil <hverkuil@...all.nl>,
	Sasha Levin <sashal@...nel.org>,
	mchehab@...nel.org,
	linux-media@...r.kernel.org
Subject: [PATCH AUTOSEL 6.12 339/486] media: i2c: imx219: Correct the minimum vblanking value

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

[ Upstream commit e3b82d49bf676f3c873e642038765eac32ab6d39 ]

The datasheet for this sensor documents the minimum vblanking as being
32 lines. It does fix some problems with occasional black lines at the
bottom of images (tested on Raspberry Pi).

Signed-off-by: David Plowman <david.plowman@...pberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@...asonboard.com>
Reviewed-by: Dave Stevenson <dave.stevenson@...pberrypi.com>
Signed-off-by: Jai Luthra <jai.luthra@...asonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@...ux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@...all.nl>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/media/i2c/imx219.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c
index 906aa314b7f84..eaa1496c71bb2 100644
--- a/drivers/media/i2c/imx219.c
+++ b/drivers/media/i2c/imx219.c
@@ -74,7 +74,7 @@
 #define IMX219_REG_VTS			CCI_REG16(0x0160)
 #define IMX219_VTS_MAX			0xffff
 
-#define IMX219_VBLANK_MIN		4
+#define IMX219_VBLANK_MIN		32
 
 /* HBLANK control - read only */
 #define IMX219_PPL_DEFAULT		3448
-- 
2.39.5