PROCESSOR-SDK-TDAX: [TDA4] [J721e EVM] Fusion daughter card unable to boot

Todor Katsarski

Hello,

After connecting the Fusion card to the j721e evm board as it is specified in the documentation it does not boot (it still boots when the fusion board is disconnected).
The fusion board is rev2. Is there any additional configuration (like jumper/switch settings)? Or is that fusion board revision incompatible with the j721 board?

Regards,
Todor

over 6 years ago

0 Mayank Mangla over 6 years ago

TI__Mastermind 24525 points

It might be a case of wrong connection. Can you please share a picture of your setup?

0 Todor Katsarski over 6 years ago in reply to Mayank Mangla

Intellectual 755 points

This is my setup. The fusion board is connected to common processor board at "CSI2 Exp" connector J25. Note that Display port, power supply and UART are also connected when testing. When the fusion board is disconnected from the green power supply "EXP PWR" connector - the system boots normally.

0 Brijesh Jadav over 6 years ago in reply to Todor Katsarski

TI__Guru**** 477155 points

Hi,

When you say, it does not work, does Linux boot properly?

Rgds,

Brijesh

0 Todor Katsarski over 6 years ago in reply to Brijesh Jadav

Intellectual 755 points

Hello,

There is no output on any of the UART ports (0-4).

Regards,
Todor

0 Mayank Mangla over 6 years ago in reply to Todor Katsarski

TI__Mastermind 24525 points

One clear issue I see is the power connection to Fusion board. Please note that the order of red/blue wires must be swapped. This is different from TDA2P EVM.

It is not clear why it affects J7 bootup. Please try the correct power connection and let us know if it boots.

0 Todor Katsarski over 6 years ago in reply to Mayank Mangla

Intellectual 755 points

This was the cause of the issue, when I swapped the wires, it boots normally.
Thank you for the support!

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PROCESSOR-SDK-TDAX: [TDA4] [J721e EVM] Fusion daughter card unable to boot