Hi,
We are using the SN75DP130 chip redriver for our 4 lane DP @ 5.4 Gbps. We are trying to put the redriver in compliance mode by setting the following registers
Offset - 0x17 -> HPD_TEST_MODE = '1'
Offset- 0x04 - > LINK_TRAINING_ENABLE = '1'
Offset - 0x01 -> AUTO_POWERDOWN_DISABLE = '1'
After setting these registers we can read the values and they appear to be set to the above values. But within a few seconds after reading the values they seem to be changing to default values.
Why are the I2C registers values toggling to defaults?
