Re: [PATCH v1] mtd: spi-nor: Add support for XM25QH64C

[Tudor.Ambarus]

On 6/17/21 6:06 PM, Reto Schneider wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> Hi all,
> 
> On 17.06.21 16:19, Michael Walle wrote:
>> That is up to the maintainers, but sooner or later we will have to face
>> the problem regarding the duplicate IDs.
> 
> A strongly worded statement by the maintainer(s) ("the Linux crowd")
> against ignoring the continuation codes might help (me) to put pressure
> on non-compliant manufacturers.
> 

We saw few ID collisions even between flashes of the same manufacturer, macronix.
Reusing flash IDs without providing an extended ID field, or ignoring the
continuation codes is bad design, and I would avoid using such flash. But I won't
reject new flash additions solely because they have a wrong identification mechanism.
We'll cast an indirect public shame on the collisions by writing hackish code when
trying to differentiate between the flashes in software.