AM62A7-Q1: The data captured when starting the video only has 512 bytes of valid data.

qingfeng huang

Part Number: AM62A7-Q1

1.The following is the mapping relationship and related commands:

VC	DT	Bayer format	videoX	subdev route	启动流命令
0	0x2c	V4L2_PIX_FMT_SBGGR12	0	media-ctl -d /dev/media0 -R "'cdns_csi2rx.30101000.csi-bridge' [0/0 -> 1/0 [1], 0/1 -> 1/1 [1], 0/2 -> 1/2 [1], 0/3 -> 1/3 [1]]" media-ctl -d /dev/media0 -R "'30102000.ticsi2rx' [0/0 -> 1/0 [1], 0/1 -> 2/0 [1], 0/2 -> 3/0 [1], 0/3 -> 4/0 [1]]"	v4l2-ctl --verbose -d /dev/video0 --set-fmt-video=width=480,height=128,pixelformat='BG12' --stream-mmap=6 --stream-skip=1 --stream-to=/tmp/480x128_SBGGR12_1X12_VC0.raw12 --stream-count=2 --stream-poll
0	0x30	V4L2_PIX_FMT_SBGGR8	2		v4l2-ctl --verbose -d /dev/video2 --set-fmt-video=width=40,height=1,pixelformat='BA81' --stream-mmap=6 --stream-skip=1 --stream-to=/tmp/40x1_SBGGR8_1X8_VC0.raw8 --stream-count=10 --stream-poll
1	0x2c	V4L2_PIX_FMT_SBGGR12	1		v4l2-ctl --verbose -d /dev/video1 --set-fmt-video=width=480,height=128,pixelformat='BG12' --stream-mmap=6 --stream-skip=1 --stream-to=/tmp/480x128_SBGGR12_1X12_VC1.raw12 --stream-count=2 --stream-poll
1	0x30	V4L2_PIX_FMT_SBGGR8	3		v4l2-ctl --verbose -d /dev/video3 --set-fmt-video=width=40,height=1,pixelformat='BA81' --stream-mmap=6 --stream-skip=1 --stream-to=/tmp/40x1_SBGGR8_1X8_VC1.raw8 --stream-count=2 --stream-poll

2.The pipeline configuration is as follows:

over 1 year ago

0 qingfeng huang over 1 year ago

Prodigy 241 points

The following compressed file capture raw12 data.rar is the data captured through the following command:
v4l2-ctl --verbose -d /dev/video0 --set-fmt-video=width=480,height=128,pixelformat='BG12' --stream-mmap=6 --stream-skip=1 --stream-to=/tmp/480x128_SBGGR12_1X12_VC0.raw12 --stream-count=2 --stream-poll
v4l2-ctl --verbose -d /dev/video1 --set-fmt-video=width=480,height=128,pixelformat='BG12' --stream-mmap=6 --stream-skip=1 --stream-to=/tmp/480x128_SBGGR12_1X12_VC1.raw12 --stream-count=2 --stream-poll

capture raw12 data.rar

2.The command captured 2 frames of data on vc0 and vc1 respectively. Only the first 512 bytes of each frame of data are valid:

3.The following is the log record corresponding to video0 and video1 capture:

4606.log.rar

0 Jianzhong Xu over 1 year ago in reply to qingfeng huang

TI__Guru 59425 points

Hello Qingfeng,

Has this issue been resolved after the patch in this ticket was applied?

Regards,

Jianzhong

0 Biao Li over 1 year ago in reply to Jianzhong Xu

TI__Expert 6550 points

Hi Jianzhong,

customer report this issue after apply the patch, I will let customer update more detail to this ticket.

BR,

Biao

0 qingfeng huang over 1 year ago in reply to Biao Li

Prodigy 241 points

Hi Jianzhong,

Judging from the current analysis, expanding the DDR space to 4G cannot solve this problem. Merging patches at the same time cannot solve this problem.