AM335x 2nd MDIO

Ijon Lee

Prodigy 20 points

I need another MDIO/MDC for external Ethernet switch. Can I use McSPI as MDIO/MDC? Is there driver for it？

over 11 years ago

0 Biser Gatchev-XID over 11 years ago

TI__Guru**** 393215 points

There is no second MDIO interface in the AM335X. You will have to write your own software implementation.

0 peaves over 11 years ago in reply to Biser Gatchev-XID

TI__Guru 62855 points

Why do you need another MDIO?

Regards,
Paul

0 Ijon Lee over 11 years ago in reply to peaves

Prodigy 20 points

I'm going to make a cape with Ethernet Switch for BeagelBon Black. MDIO is used by BeagleBon Black and is not route to the expansion headers. So, I need some means to connect the MDIO of the Ethernet Switch for configuration.

0 peaves over 11 years ago in reply to Ijon Lee

TI__Guru 62855 points

The AM335x MDIO module can support up to 32 PHYs. Therefore, you do not need another MDIO.

It sounds like you just need connectivity to the existing MDIO that was not provided on the BeagleBone Black cape connectors.

Regards,
Paul

Processors

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AM335x 2nd MDIO