Re: [PATCH v2 1/5] dt-bindings: at24: consistently document the compatible property

[David Lechner]

On 12/21/2017 10:20 AM, Peter Rosin wrote:
> On 2017-12-21 14:48, Bartosz Golaszewski wrote:
> > Current description of the compatible property for at24 is quite vague.
> >
> > Specify an exact list of accepted compatibles and document the - now
> > deprecated - strings which were previously used in device tree files.
>
> Why is it suddenly deprecated to correctly specify what hardware you
> have, e.g. "nxp,24c32". In this case the manufacturer is nxp, damnit.
> Sure, it happens to be compatible with "atmel,24c32", but that is
> supposed to be written with a fallback as
>
> 	"nxp,24c32", "atmel,24c32"
>
> if I understand correctly. So, why is that deprecated in this case?
>
> What if (a few years down the line) it is discovered that some weird
> quirk is needed that is only appropriate for nxp chips?
>
> nxp is of course just an example, pick any manufacturer of eeproms
> (supposedly) compatible with the atmel interface.

So now I am supposed to change my device tree from "microchip,24c128" to 
"atmel,24c128"?

Also, at,24c08 is listed in 
Documentation/devicetree/bindings/trivial-devices.txt. It should 
probably be removed.