OMAP-L138: DSP Bootloader from micro-SD Card error.

Mitesh Hiran

Part Number: OMAP-L138
Other Parts Discussed in Thread: OMAPL138

Helklo, I am using OMAPL138 SoC from ages on a product and recently we upgraded them to use industrial SD cards. This seem to work but every now and then it fails to read SD card.

couple of images attahced, please let me know if there is a way to debug this.

Failed:
$IMG_0781.jpg$

Passed:

1 month ago

0 PaulM 29 days ago

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Only the failed image came through.

Let me check on the error and get back to you.

--Paul

0 Mitesh Hiran 29 days ago in reply to PaulM

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Thanks Paul.

attached passed image.

0 PaulM 28 days ago in reply to Mitesh Hiran

TI__Mastermind 30175 points

Mitesh

This is a 'random' failure on one SD card or multiple?

Does this issue happen on multiple boards or just one?

If just one card, have you tried re-flashing and re-testing?

Does moving the failing card to a different board have the same result?

it is possible that the new cards use a controller that has marginal interoperability issues.

--Paul

0 Mitesh Hiran 28 days ago in reply to PaulM

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Hi Paul, same SD card fails on multiple boards.

there are some SD card that works always and some that works few times and fails.

0 PaulM 27 days ago in reply to Mitesh Hiran

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Mitesh

Definitely sounds like marginal timing on the SD card.

Some vendors use different internals/controllers under the same model and/or modify the internals over time.

It would be worth exploring an alternate make/model of SD card

--Paul

0 Mitesh Hiran 27 days ago in reply to PaulM

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Thanks Paul..

we got 5 samples and tested them and then placed order of 50 and now some fails. so wanted to know if we can expose some debug on the u-boot or bootloader to see if the issue can be resolved