RE: Incorporating External Spi Flash vin-supply/supply-gpio

Sigurd Hellesvik — Tue, 23 Jan 2024 12:01:51 GMT

Hi,

I searched for "supply-gpios" in a previous ticket: Question about supply-gpios specification in dts file . I think the answer here is the same: supply-gpios is not used in this case, so the drivers are responsible for handling that.

Maybe the easiest way here is to use the Power Management features to "trick" zephyr into toggling that pin for you?
You see, if you use Power Management, the SPI-NOR driver will do some stuff on power management.
Now, you can also implement custom things that happen on power management, and use that to toggle supply-gpios.

The most proper method would be to implement a new custom driver for your external flash setup, which uses supply-gpios, I think.

Does this answer your question?

Regards,
Sigurd Hellesvik