AM625: MCU GPIO Control from A53 Linux Domain

Jack

Mastermind 9105 points

Part Number: AM625

Tool/software:

Hi AM62x Champ !

My customer would like to access MCU GPIO from Linux Domain.

Would you please provide us with appropriate guidance ?

They would like to check possibility of A53' Direct Access Control rather than IPC remoteproc method btw A53 and M4F cores.

Thanks.

Best Regards,

Jack

3 months ago

+1 Nick Saulnier 3 months ago

TI__Guru** 101260 points

Hello Jack,

Is your M4F core using the MCU GPIO module?

If the MCU GPIO module is unused, then it should be easy. Just follow FAQ "How to Allocate & Use GPIOs from Different Device Domains"
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1398198/faq-am62x-how-to-allocate-use-gpios-from-different-device-domains

If the M4F is currently using the MCU GPIO module, my understanding is that the GPIO module cannot be shared between a Linux core and an MCU+ core. However, I am double-checking on that with some other team members.

Regards,

Nick

0 Jack 3 months ago in reply to Nick Saulnier

Mastermind 9105 points

Hi Nick

M4F does not use MCU GPIO module. and Customoer would like to access MCU GPIO from Linux Domain.

Your FAQ link would be enough for customer implementation. I will forward it.

Thanks.

Best Regards,

Jack

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AM625: MCU GPIO Control from A53 Linux Domain