Part Number: DS90UB964-Q1
I'm writing question on behalf of my customer.
This telematics system uses 3 cameras(913 ser) and 964 des.
During tens of thousand on/off test, customer founds no display signal issue. After restart, the symtom is gone and never duplicated again.
Comparing normal log, there're two abnormal logs of I2C communication.
1. Normal: /usr/bin/ccidbgr /dev/v4l-subdev9 0x3d read 0x24
0x24 <- 0x00
Abnormal: /usr/bin/ccidbgr /dev/v4l-subdev9 0x3d read 0x24
0x24 <- 0x24
CSI TX1 interrupt even though TX1 is not being used.
2. Normal: /usr/bin/ccidbgr /dev/v4l-subdev9 0x3d read 0x4D
0x4d <- 0x43
Abnormal: /usr/bin/ccidbgr /dev/v4l-subdev9 0x3d read 0x4D
0x4d <- 0xC3
This RX port is not selected, but it is read.
This symptom is under investigation, but not easy to replicate. Please advise if there's something need to check. Thank you.
