Dell Latitude 7410. The USB Type-C port is not working

[eliemgh]

I have a Dell Latitude 7410 with an Intel i7 10th Gen CPU. The USB Type-C port is not working, and since it's the only charging port on the device, I'm unable to charge the laptop.

I inspected the motherboard and found that the IC labeled TPS65988 had a short circuit. I ordered a replacement IC from Alibaba and replaced it. The short issue is now resolved, but the laptop still doesn't charge, and the Type-C port remains non-functional.

After doing some research, I found out that the TPS65988 needs to be programmed after replacement in order to function properly.

Has anyone encountered this issue before or has experience with programming this chip? Any advice or guidance would be appreciated.

[mon2]

The controller should be able to boot using the firmware inside of UT6 (SPI flash rom). Would you have a known good dump of this flash? Always backup the contents of the device before erasing and testing new firmware.

What are the voltage to ground measurements for the following pins?

TBT_I2C_SDA
TBT_I2C_SCL

These lines can be used to configure the same PD controller by an upstream SMBUS / I2C bus master. That is, this PD controller is a SMBUS / I2C slave to another bus master. Respectively, this PD controller is a SPI bus master to allow booting from a SPI slave device (UT6). Not sure but suspecting that the motherboard BIOS will at some point reflash the contents of UT6. Perhaps UT6 needs to be completely blank for this trigger so not sure but you can try. Backup the contents of UT6 first before erasing. Make multiple backups and verify each against the flash device.