Hello! The only Zephyr flash driver I see that uses the wp_gpios pin is spi_flash_at45.c. It seems that none of them use hold_gpios.
Presently, for jedec,spi-nor compatible, we are using spi_nor.c.
It seems that in the simple case, spi_nor.c should be patched to set both pins as GPIO_OUTPUT_INACTIVE (typically high for these wp and hold pins).
Next, it's reasonable to initialize WP active and only de-assert during flash writes. Could still be done with spi_nor.c simply following the model from spi_flash_at45.c.
For now, I'd like to initialize hold as inactive and not use it within the driver.
Finally, if the external flash is on a power domain, both of these pins should be set to DISCONNECTED when the power domain goes OFF.
Does this sound like a reasonable patch to spi_nor.c?
Cheers,
J.P.
