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media: imx477: Increase IMX477_VBLANK_MIN due to image corruption

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The 4056x3040 mode appears to need more vertical blanking lines
than any other, leaving a black bar at the bottom of the image.

Increase IMX477_VBLANK_MIN from 4 to 48 to compensate. (It may be
possible to reduce it slightly further, but fix the regression
for now).

https://github.com/raspberrypi/linux/issues/7109

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
This commit is contained in:
Dave Stevenson
2025-10-30 19:54:08 +00:00
committed by Dom Cobley
parent 941f5062a7
commit c395d5aab1
1 changed files with 1 additions and 1 deletions
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2
drivers/media/i2c/imx477.c
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@@ -72,7 +72,7 @@ MODULE_PARM_DESC(fstrobe_delay, "Set fstrobe delay from end all lines starting t
/* V_TIMING internal */
#define IMX477_REG_FRAME_LENGTH CCI_REG16(0x0340)
#define IMX477_VBLANK_MIN 4
#define IMX477_VBLANK_MIN 48
#define IMX477_FRAME_LENGTH_MAX 0xffdc
/* H_TIMING internal */