TDA4VM: In SDK10.0, the ethfw of mcu2_0 may reconfigure the pinmux of AB29

sui guoqing

Prodigy 180 points

Part Number: TDA4VM

Tool/software:

Hi,TI

We configured AB29 as mode 7 on mcu1_0, but if mcu2_0 turns on ethfw, AB29 will probably be changed to mode 0.

I found configuration AB29 here and deleted it, but the above phenomenon still occurs.

Where does ethfw configure the pinmux for AB29?

Thanks.

5 months ago

+1 Doredla Sudheer Kumar 5 months ago

TI__Guru 65140 points

Hi,

Let me check whether the same being set from u-boot environment variable?

Can you please confirm are you using u-boot?

Best Regards,

Sudheer

0 sui guoqing 5 months ago in reply to Doredla Sudheer Kumar

Prodigy 180 points

Hi,

The u-boot is used.

I want to confirm whether mcu2_0 is configured with the pinmux of AB29, but I don't know whether it is associated with u-boot.

Best Regards,

0 Doredla Sudheer Kumar 5 months ago in reply to sui guoqing

TI__Guru 65140 points

Hi,

ETHFW Sets AB29 Pin in GPIO Mode as it was used on TI EVM for PHY Reset.

U-boot not configuring this Pin.

Please check in your applications any where it was used ?

Best Regards,
Sudheer

0 sui guoqing 5 months ago in reply to Doredla Sudheer Kumar

Prodigy 180 points

Hi,

I found this position:

J25 H24 is in the wakeup domain.

The offset address of the configuration register of J25 H24 is the same as that of AB29 AB28.

So the above code configures AB29 AB28, not J25 H24.

Best Regards,

+1 Doredla Sudheer Kumar 5 months ago in reply to sui guoqing

TI__Guru 65140 points

Hi,

sui guoqing said:
So the above code configures AB29 AB28, not J25 H24.

Yes, ETHFW Ping Mux data configures AB29 as I have captured above from phyReset.

You need to modify this as per you custom board.

Best Regards,
Sudheer

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TDA4VM: In SDK10.0, the ethfw of mcu2_0 may reconfigure the pinmux of AB29