BeagleY-AI compatibility with Raspberry HAT+ spec.

General Discussion
1

When checking the HAT+ specification by Raspberry I noticed that the EEPROM address used on a HAT for identifying the board is the same as the address used by the EEPROM on the BeagleY-AI itself, namely 0x50.

Does this mean that only HATs without EEPROM are usable with the BeagleY-AI? Is there a list of HATs that are compatible? Am I missing something?

2

The pins are mapped on the BeagleY-AI to support many Raspberry Hat’s… It’s not 100%, for example spi is spi-gpio and not hardware spi to match the PI… Some Hat’s require the Raspberry Pi’s firwmare, (Fan controller on POE)…

But many Hat’s will work with a proper overlay.

Regards,

3

Am I wrong in assuming that using a HAT with an ID EEPROM on it will prevent the BeagleY-AI from reading its own EEPROM as well as the one on the HAT?

4

While yes, that would break eeprom reads for hat devices. We don’t read or use the eeprom on startup in any situation today.

Regards,

5

So in effect the HAT isn’t auto-detected. One needs to manually load the appropriate overlay, right?

6

Correct

7

Thanks!