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Diffstat (limited to 'target/linux/bcm27xx/patches-5.10/950-0606-media-i2c-ov5647-Correct-minimum-VBLANK-value.patch')
-rw-r--r--target/linux/bcm27xx/patches-5.10/950-0606-media-i2c-ov5647-Correct-minimum-VBLANK-value.patch26
1 files changed, 26 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.10/950-0606-media-i2c-ov5647-Correct-minimum-VBLANK-value.patch b/target/linux/bcm27xx/patches-5.10/950-0606-media-i2c-ov5647-Correct-minimum-VBLANK-value.patch
new file mode 100644
index 0000000000..753d849c16
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.10/950-0606-media-i2c-ov5647-Correct-minimum-VBLANK-value.patch
@@ -0,0 +1,26 @@
+From 6131e50bfae6adb5ee52ad0d08cf12bfcbf8c606 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Tue, 11 May 2021 12:57:22 +0100
+Subject: [PATCH] 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: 9b5a5ebedc303 ("media: i2c: ov5647: Add support for V4L2_CID_VBLANK")
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/ov5647.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/ov5647.c
++++ b/drivers/media/i2c/ov5647.c
+@@ -81,7 +81,7 @@
+ #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