Tool/software:
Register dump required to initialize the Serdes pair between DS90UB954 with the serializer DS90UB953. The Imager transmit data only on first two MIPI lanes. Hence, TI-953 need to be configured only for first two MIPI lanes for reception. The Deserializer [TI-954] shall use all lanes to transmit video to the SOC.
Is there any status register on Deserializer to check if video received or not?
Hello Rajj,
Mainly your link should work without any problem if both devices (SER and DES) are configured correctly using their MODE and IDx pins. However, for your above-mentioned configurations you may need to add the followings:
At position #1 as shown below in the system power-up initialization sequence, we have to write all DES registers that need to be configured, see example code:
WriteI2C(0x1F,0x00) # Set CSI transmitter speed to 1.6Gbps/lane
WriteI2C(0x4C,0x01) # FPD3_PORT_SEL: RX port0 (0x01) or port1 (0x12)
WriteI2C(0x58,0x5E) # Enable pass through
WriteI2C(0x5C,0x18) # SER_ALIAS_ID
WriteI2C(0x5D,0x60) # Image sensor ID
WriteI2C(0x65,0x60) # Image sensor Alias
WriteI2C(0x7D,0x01) # Enable PASS threshold
At position #2 once you have a stable LOCK, configure the required SER and then Image sensor registers, for example:
WriteI2C(0x02,0x13) # Set number of CSI lanes to 2, and I2C strap mode to 1.8V. If 3.3V is used, then write 0x12
At this position you should monitor PASS indication on the DES --> reg 0x4D bit[1]. Once high, go to next step.
At position #3 Enable DES CSI port and the enable port forwarding.
WriteI2C(0x33,0x01) # Enable DES CSI TX port
WriteI2C(0x20,0x20) # Enable port forwarding of RX port0. If both RX ports, the 0x00
