Hi
We are working on a custom board based on the ZynqMP SoC. Using the SN65DP159 retimer IC on the HDMI TX path. The DP159 is connected to the i2c bus lines and controlled from the AXI-IIC soft IP. We were able to detect the same chip on the development kit we were using, but when it comes to custom board we are facing an issue in detecting the chip.
Checked the relevant voltage lines, seem to be fine. Hope it should be working in the i2c-mode as the I2C_EN PIN is HIGH.
Tried probing the SCL SDA lines, and observed we are not receiving an ACK from the DP159. There is another EEPROM chip on the same bus to which we were able to do transactions.
But the DP159 is not detected even in i2cdetect on the same bus.
Please provide any suggestions on the possible debug to root out the issue.
Thanks & Regards,
Jayakrishnan