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TPS65986EVM: Soft reset when device's displaying

user5179542
Prodigy 50 points
Part Number: TPS65986EVM
Other Parts Discussed in Thread: TPS65981

H:

I wanna set TPS65986EVM to be a DRP which send signal to monitor from device via EXPANSION board and provide power to device .

Attached is a FW which I use.

It can work on LG G5, but it fail on ASUS Zenfone AR. I use Type-C analyzer to capture some log, and I found it always soft reset.

Thanks,

Joshua

DRP-Ver20180103.pjt

  • 0
    TI__Genius 10370 points

    Hi Joshua,

    Welcome to E2E! You're in luck, on the Application Customization Tool (During Debug mode) there's a register called PD status. This register will tell you the details on what's causing the soft reset (look below for a screenshot). Load the TPS65986 template on the GUI ==> Flash the firmware onto the device ==> After flashed, click on Debug Mode ==>  Click on Debug Registers ==> Click on PD Status ==> Look at the Soft Reset Details. FYI, make sure the device is connected to your laptop during debug mode. 

    Also, it might be useful to take a look at our Host Interface Technical Reference Manual which can be found here: http://www.ti.com/lit/ug/slvuan1a/slvuan1a.pdf . This guide goes over all the registers and values for our TPS65981/2/6 PD controllers. 

    I hope this helps and If this answers your question, PLEASE select  This resolved my issue.  

  • 0 in reply to Aramis P. Alvarez
    Prodigy 50 points

    Hi Aramis:

    Thanks for reply.

    I followed your instruction and Soft Reset Details showed "tps6598 soft reset sent after retries were exhausted".

    What is this mean?

    How should I resolve?

    Thanks,

    Joshua

  • 0 in reply to user5179542
    TI__Genius 10370 points

    Hi  Joshua,

    It seems that the PD controller is trying to ask for a Vendor ID but the Asus Zenfone isn't communicating one per your log above. This might be an issue with the PD controller in the Asus system.

    If this answers your question, PLEASE select  This resolved my issue. 

  • 0 in reply to Aramis P. Alvarez
    TI__Genius 10370 points

    Hi Joshua,

    Since we closed this thread, could you PLEASE select  This resolved my issue  

    Thank you so much for your question and choosing TI parts for your design :-)

  • 0 in reply to Aramis P. Alvarez
    TI__Genius 10370 points

    Hi Joshua,

    Since we closed this thread, could you PLEASE select  This resolved my issue  

    This will help us understand how to better support our e2e customers! Thank you so much for your question and choosing TI parts for your design :-)