Re: [RFC PATCH] mtd: devices: add AT24 eeprom support

From: Arnd Bergmann
Date: Wed Nov 29 2023 - 12:45:18 EST


On Wed, Nov 29, 2023, at 17:47, Miquel Raynal wrote:
> brgl@xxxxxxxx wrote on Wed, 29 Nov 2023 10:10:28 +0100:
>> Though if I'm being honest - I would prefer a single driver with
>> backwards compatibility. Have you estimated the effort it would take
>> to abstract both nvmem and mtd?
>
> Also agreed :-)

+1

I think this particularly makes sense in the light the other
at24 driver that was recently removed in commit 0113a99b8a75
("eeprom: Remove deprecated legacy eeprom driver").

The other problem with having two drivers is the need to
arbitrate between them, e.g. when you have a machine with
two at24 devices but want to use one of each for the two
subsystems. This does not really work with our DT probing
logic at the moment.

Arnd