TPS65987D: Procedure for SPI flash programming

pdiddymac

Part Number: TPS65987D

I believe I understand the SPI flash programming procedure but I would like some clarification/guidance to make sure I'm not missing something:

My setup:
Aardvark Total Phase i2c/spi flash adapter

i2c tied to port I2C2

spi tied to spi flash

ADCIN2 set to Configuration 3 - 20v sink 5v source

At boot, device looks for patch from SPI flash, then proceeds to configuration 3 if no patch is present, correct?

My problem is when using application GUI, I can load settings to a chip and read back that those changes were correct over i2c. If I write the binary to spi flash, I get confirmation that it was written successfully but then on power cycle, it reads spi flash error and did not load a patch. I saved the binary as a full image rather than a low or high region.

Do I need to change my configuration to wait_for_3v3_internal so that it loads the patch file rather than configuration 3? I assumed even with configuration 3 it would try to load a patch file.

Thanks!

over 4 years ago

0 Emma Hoying over 4 years ago

TI__Genius 9630 points

Hello,

At boot, device looks for patch from SPI flash, then proceeds to configuration 3 if no patch is present, correct?

Yes this is correct.

Do you have the Aardvark connected to the SPI lines?

Thanks,

Emma

0 pdiddymac over 4 years ago in reply to Emma Hoying

Intellectual 450 points

Hi Emma,

Yes, I do have the Aardvark connected to the SPI lines.

Are there some things I can do with SPI to verify that that the flash was programmed correctly?

0 Emma Hoying over 4 years ago in reply to pdiddymac

TI__Genius 9630 points

Hello,

Are you flashing your device using the "Flash from Binary file" option or are you changing your settings in debug mode? Debug mode changes are not permanent. This video demonstrates the proper way to flash your device: https://training.ti.com/tps65987evm-and-usb-c-pd-duo-evm-tutorial?context=1140344-1140343 3:55 has the flash instructions. You will need to ensure you are flashing from Aardvark so make sure that you configure your I2C adapter settings.

Thanks,

Emma

0 pdiddymac over 4 years ago in reply to Emma Hoying

Intellectual 450 points

when I read from flash offsets I don't get the "Read Success" like in the video. What am I missing?

This is the SPI flash I used:

https://www.mxic.com.tw/en-us/flash-memory-solutions/automotive/Pages/spec.aspx?p=MX25R6435F&m=Automotive&n=PM2334

0 pdiddymac over 4 years ago in reply to pdiddymac

Intellectual 450 points

It says invalid region pointers read. Setting to defaults

0 pdiddymac over 4 years ago in reply to Emma Hoying

Intellectual 450 points

Hi Emma,

I was reading here

e2e.ti.com/.../tps65987d-i2c-patching-controller-issue-getting-controller-from-app-mode-to-patch-mode

That tieing MISO low will disable the flash update. My MISO is tied low.... have I been doing this wrong the whole time because I disabled my flash by tieing it low?

0 Emma Hoying over 4 years ago in reply to pdiddymac

TI__Genius 9630 points

Hello,

Yes this is what is causing your issue, good find! Please follow any one of our EVM's to see a correct SPI set up. I recommend the https://www.ti.com/tool/USB-C-PD-DUO-EVM

Thanks,

Emma

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TPS65987D: Procedure for SPI flash programming