Problem : Failed to create /dev/video0 on Nano DUT
Hardware : I2C bus > i2c mux > camera
Description : The camera grow up on i2c-13 if the camera plug-in first bus. The camera driver has probed for the IMX219 camera. However, there is no such video.
i2cdetect information:
root@linux:~# i2cdetect -r -y 13
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: – – – – – – – – – – – – –
10: UU – – – – – – – – – – – – – – –
20: – – – – – – – – – – – – – – – –
30: – – – – – – – – – – – – – – – –
40: UU – – – – – – – – – – – – – – –
50: – – – – – – – – – – – – – – – –
60: – – – – 64 – – – – – – – – – – –
70: UU – – – – – – –
root@linux:~# i2cdetect -r -y 14
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: – – – – – – – – – – – – –
10: – – – – – – – – – – – – – – – –
20: – – – – – – – – – – – – – – – –
30: – – – – – – – – – – – – – – – –
40: UU – – – – – – – – – – – – – – –
50: – – – – – – – – – – – – – – – –
60: – – – – – – – – – – – – – – – –
70: UU – – – – – – –
root@linux:~#
Dmesg:
dmesg.log (2.5 KB)
Patch on device tree:
camera_nano.patch (26.3 KB)
Decompiled DTS:
tegra210-epcr7200.dts (340.7 KB)