TI中文支持网DM8168EVM无法创建视频输入节点/dev/video4 ~6
目前#insmod ti81xxvo.ko 可以创建/dev/video1~3.
而插入#insmod ti81xxvi.ko就失败，出现如下错误
tvp7002 2-005d: tvp7002 found @ 0x5d (OMAP I2C adapter)
omap_i2c omap_i2c.2: controller timed out
omap_i2c omap_i2c.2: controller timed out
omap_i2c omap_i2c.2: controller timed out
tvp7002 2-005d: Rev. ff detected.
tvp7002 2-005d: Unknown revision detected.
omap_i2c omap_i2c.2: controller timed out
tvp7002 2-005d: Write: retry … 0
omap_i2c omap_i2c.2: controller timed out
tvp7002 2-005d: Write: retry … 1
omap_i2c omap_i2c.2: controller timed out
tvp7002 2-005d: Write: retry … 2
omap_i2c omap_i2c.2: controller timed out
tvp7002 2-005d: Write: retry … 3
omap_i2c omap_i2c.2: controller timed out
tvp7002 2-005d: Write: retry … 4
tvp7002 2-005d: TVP7002 write error -110
tvp7002: probe of 2-005d failed with error -110
网上找一些资料说，是视频解码芯片i2c谁控制的问题。
A8和M3冲突，我改成A8控制也不行。
在：/opt/ezsdk/targetfs/etc/init.d/load-hd-firmware.sh脚本中。
firmware_loader $HDVPSS_ID /usr/share/ti/ti-media-controller-utils/dm816x_hdvpss.xem3 start
改为firmware_loader $HDVPSS_ID /usr/share/ti/ti-media-controller-utils/dm816x_hdvpss.xem3 start i2c 0
也不行。
TI81XX_Video_Capture_Driver_User_Guide.pdf
里面说：
notifyk.vpssm3_sva=0xA0000000 ，而我再bootargs用这个地址，linux启动失败。
用0xbf900000就正常。
• DM816x/AM389x platforms share the same M3 firmware ti816x_hdvpss.xem3
• DM814x/AM387x platforms share the same M3 firmware ti814x_hdvpss_1G_debug.xem3.
• V4L2 capture nodes are /dev/video0, /dev/video4, /dev/video5 and /dev/video6.
• Above nodes are created only when ti81xxvo.ko is loaded followed by ti81xxvin.ko
• V4L2 capture streaming is supported only on /dev/video0 node with TVP7002 as decoder.
为什么我实际操作就不行呢？
我的uboot参数
setenv bootargs 'mem=364M@0x80000000 mem=320M@0x9FC00000 vmalloc=500M console=ttyO2,115200n8 root=/dev/nfs nfsroot=192.168.2.27:/opt/ezsdk/targetfs rw noinitrd ip=192.168.2.100:192.168.2.27:192.168.2.1:255.255.255.0::eth0:off vram=50M notifyk.vpssm3_sva=0xbf900000'
Chris Meng：
你好，
原来你使用的是EZSDK。请问你的EVM是否有配套的I/O子卡？
http://support.spectrumdigital.com/boards/evm816xiodc/revc/
