AM6441: MDIO/MDC connection in PRUICSS

Oba

Part Number: AM6441

Hello,

My customer is going to use 2 MIIs in PRUICSS_G0 and 1 MII in PRUICS_G1.
Then they have question for MDIO/MDC for these ports.

Both PRUICSS_G0 and G1 have own MDIO/MDC.
Is it possible to use only 1 MDIO/MDC port for all these 3 ports like the below?
Is there any rule or restriction for MDIO/MDC usage?
I think it should be OK from the H/W point of view. But I just wonder if there is any restricition in S/W (our SDK) point of view.

Regards,
Oba

over 1 year ago

0 Kallikuppa Sreenivasa over 1 year ago

TI__Guru**** 193139 points

Hello Oba,

Thank you for the query.

The recommendation is to use separate MDIOs in the above case.

Please refer below.

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1243363/am6442-pru-ethernet-dts-configuration/4742487#4742487

Regards,

Sreenivasa

0 Oba over 1 year ago in reply to Kallikuppa Sreenivasa

TI__Genius 17355 points

Hello Sreenivasa,

Thanks for your reply.
I read the thread you mentioned. This is similar case, but they discussed about sharing MDIO with CPSW and PRU, not sharing with PRU0 and PRU1.
Is it the same?

Regards,
Oba

+1 Kallikuppa Sreenivasa over 1 year ago in reply to Oba

TI__Guru**** 193139 points

Hello Obas,

Thank you.

The comments are valid for the PRU-ICSSG0 and PRU-ICSSG1.

Regards,

Sreenivasa

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AM6441: MDIO/MDC connection in PRUICSS