AM24x/ AM64x: Can PRU Ethernet stay up while main domain resets?

Vincent Chen

This is a continuation of the discussion at https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1350033/am623-is-is-feasible-to-reset-without-ethernet-switch

Hello,

If we want to use the function of the PRU Ethernet switch, and we require the switch to be isolated from main domain resets, can choosing AM243x with PRU-ICSSG meet this requirement? If not, can you recommend a feasible solution?

over 1 year ago

0 Nick Saulnier over 1 year ago

TI__Guru** 100980 points

Hello Vincent,

I am sending your thread over to the PRU Ethernet team to comment.

Regards,

Nick

+1 Nick Saulnier over 1 year ago in reply to Nick Saulnier

TI__Guru** 100980 points

Initial comment from PRU Ethernet team: This can be supported by HW, but not yet supported in the firmware running on the PRU cores.

(I assume also not supported in the software drivers - if I recall properly, the Linux PRU Ethernet driver will reset the link when the driver initializes, even if the link was already up before Linux started booting).

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AM24x/ AM64x: Can PRU Ethernet stay up while main domain resets?