Hi Geert,
We won't break compatibility with older DTBs if we use a list of
compatibles. First the vendor specific one which will use some quirks,
and if that's not available, have as second the generic jedec,spi-nor
to
fallback to.
Sure, you should use a list.
But the current recommended practice is to not have a list,
but just "jedec,spi-nor" (using a list with a new FLASH part name
causes checkpatch and dtbs_check warnings). Hence if you follow that
recommendation, you will run into compatibility issues with older DTBs
when you discover the quirk later, and decide to add it to the list.
The SPI NOR flashes should be auto discoverable. Why do you need a
compatible string? Quirks can be added to the flash_info database.
Also note, that one reason *not* to add a particular flash compatible
is that they are usually interchangeable and OEMs do so. So a where
today a board might have a macronix flash, tomorrow that board might
have a gigadevice one for example.
-michael
