RV1126 MIPI CSI-2调试24bit RGB888格式输入，FPGA将DVP输入的1280X800的RGB888，24bit图像数据，转换为MIPI CSI发送给RV1126。RV1126通过MIPI 接收FPGA发送来的图像。通过V4L2抓图保存。
1：RV1126 MIPI初始化。
格式为MEDIA_BUS_FMT_RGB888_1X24，分辨率1280X800。修改DTS，和内核驱动文件。修改后，注册成功。
- entity 17: rockchip-mipi-csi2 (5 pads, 17 links)
type V4L2 subdev subtype Unknown flags 0
device node name /dev/v4l-subdev1
pad0: Sink
[ 44.780200] rockchi [fmt:RGB888_1X24/1280x800 pfield:none
crop.bounds:(0-,0)/1280x800
crop:(0,0)/m1280x800]
<- "rockchip-mipi-dphiy-rx":1 [ENABLED]
2：FPGA程序，修改适配MEDIA_BUS_FMT_RGB888_1X24。
3：联调。抓图
[root@RV1126_RV1109:/]# v4l2-ctl -d /dev/video0 --set-fmt-video=width=1280,heigh
t=800,pixelformat=RGB3 \--stream-mmap=3 \--stream-skip=3 \--stream-to=/tmp/cif88
out \--stream-count=1 \--stream-poll
[root@RV1126_RV1109:/tmp]# ls -l
total 3232
drwxr-xr-x 2 avahi avahi 40 Aug 4 09:30 avahi-autoipd
-rw-r--r-- 1 root root 3072000 Aug 4 09:31 cif888.out
-rw-r--r-- 1 root root 66024 Aug 4 09:30 cl_viv_vx_ext.h
drwxr-xr-x 2 root root 60 Aug 4 09:30 dbus
-rw-r--r-- 1 root root 0 Aug 4 09:30 dnsmasq.leases
---------- 1 root root 6 Aug 4 09:30 loglevel
-rw-r--r-- 1 root root 153389 Aug 4 09:31 messages
-rw-r--r-- 1 root root 1349 Aug 4 09:30 mountall.log
drwxr-xr-x 7 root root 180 Aug 4 09:30 nginx
-rw-r--r-- 1 root root 55 Aug 4 09:30 resolv.conf
drwxr-xr-x 2 root root 60 Aug 4 09:30 subsys
drwx------ 2 root root 40 Aug 4 09:30 tmp.e06cHtr2Mn
抓图成功。
<<<[ 97.558413] rkcif_mipi_lvds: not active buffer, skip current frame, mipi/lvds stream[0]
[ 97.600634] rkcif_mipi_lvds: not active buffer, skip current frame, mipi/lvds stream[0]
<[ 97.685103] rkcif_mipi_lvds: not active buffer, skip current frame, mipi/lvds stream[0]
[ 97.727362] rkcif_mipi_lvds: not active buffer, skip current frame, mipi/lvds stream[0]
<[ 97.811841] rkcif_mipi_lvds: not active buffer, skip current frame, mipi/lvds stream[0]
[ 97.854048] rkcif_mipi_lvds: not active buffer, skip current frame, mipi/lvds stream[0]
<[ 97.938526] rkcif_mipi_lvds: not active buffer, skip current frame, mipi/lvds stream[0]
[ 97.980739] rkcif_mipi_lvds: not active buffer, skip current frame, mipi/lvds stream[0]
<[ 98.065280] rkcif_mipi_lvds: not active buffer, skip current frame, mipi/lvds stream[0]
[ 98.107590] rkcif_mipi_lvds: not active buffer, skip current frame, mipi/lvds stream[0]
<[ 98.191902] rkcif_mipi_lvds: not active buffer, skip current frame, mipi/lvds stream[0]
[ 98.234113] rkcif_mipi_lvds: not active buffer, skip current frame, mipi/lvds stream[0]
<[ 98.318589] rkcif_mipi_lvds: not active buffer, skip current frame, mipi/lvds stream[0]
[ 98.360868] rkcif_mipi_lvds: not active buffer, skip current frame, mipi/lvds stream[0]
<[ 98.445295] rkcif_mipi_lvds: not active buffer, skip current frame, mipi/lvds stream[0]
[ 98.487487] rkcif_mipi_lvds: not active buffer, skip current frame, mipi/lvds stream[0]
< 23.68 fps, dropped buffers: 14
连续抓图
4：读取图像文章来源：https://www.toymoban.com/news/detail-489395.html
adb读取图像，打开显示效果。文章来源地址https://www.toymoban.com/news/detail-489395.html
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