target/linux/bcm27xx/patches-5.15/950-0391-media-i2c-ov5647-Correct-minimum-VBLANK-value.patch

   1 From 50a6f9ee1e93724854efeb20ebbe65d2b0637d2a Mon Sep 17 00:00:00 2001
   2 From: David Plowman <david.plowman@raspberrypi.com>
   3 Date: Tue, 11 May 2021 12:57:22 +0100
   4 Subject: [PATCH] media: i2c: ov5647: Correct minimum VBLANK value
   5
   6 Trial and error reveals that the minimum vblank value appears to be 24
   7 (the OV5647 data sheet does not give any clues). This fixes streaming
   8 lock-ups in full resolution mode.
   9
  10 Fixes: 9b5a5ebedc303 ("media: i2c: ov5647: Add support for V4L2_CID_VBLANK")
  11 Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
  12 ---
  13  drivers/media/i2c/ov5647.c | 2 +-
  14  1 file changed, 1 insertion(+), 1 deletion(-)
  15
  16 --- a/drivers/media/i2c/ov5647.c
  17 +++ b/drivers/media/i2c/ov5647.c
  18 @@ -72,7 +72,7 @@
  19  #define OV5647_PIXEL_ARRAY_WIDTH       2592U
  20  #define OV5647_PIXEL_ARRAY_HEIGHT      1944U
  21
  22 -#define OV5647_VBLANK_MIN              4
  23 +#define OV5647_VBLANK_MIN              24
  24  #define OV5647_VTS_MAX                 32767
  25
  26  #define OV5647_EXPOSURE_MIN            4