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TDA4VM: TDA4VM88 Question

Victoria Tabares

Prodigy 15 points

Part Number: TDA4VM

1. On the TDA4VM88, when matching with the Samsung 64GB eMMC KLMCG4JEUD-B04Q058, when the surface temperature of the TDA4VM88 chip exceeds 60°C, there’s a probability of boot failure when booting from the eMMC. What might be the cause of this? How can it be resolved?

over 2 years ago

0 Diwakar Dhyani over 2 years ago

TI__Guru 64625 points

Hi Victoria

Can you elaborate more on this where exactly boot failure you are observing is it at the ROM stage,SBL/SPL ?

help share logs as well .

Regards
Diwakar

0 Victoria Tabares over 2 years ago in reply to Diwakar Dhyani

Prodigy 15 points

Hi Diwakar,

Here is what the logs are saying and where we are seeing the failure.

0 Diwakar Dhyani over 2 years ago in reply to Victoria Tabares

TI__Guru 64625 points

Hi Victoria

Can you add #define CONFIG_MMC_TRACE in drivers/mmc/mmc_private.h in uboot repo

so that we can see command/response sequence.

Also, how the signal integrity is at the time of boot failure.

Regards
Diwakar