RE: [PATCH v2 5/6] arm64: dts: imx8ulp: update gpio node

[Peng Fan]

> Subject: Re: [PATCH v2 5/6] arm64: dts: imx8ulp: update gpio node
> 
> On 16/09/2023 04:04, Peng Fan (OSS) wrote:
> > From: Peng Fan <peng.fan@xxxxxxx>
> >
> > The i.MX8ULP GPIO supports two interrupts and one register base, and
> > not compatible with i.MX7ULP. Update the node following dt-binding doc.
> >
> I think last email thread concluded they are compatible. Otherwise, how did it
> work so far? You break users, which might be ok, but commit does no say
> that anything was broken here.
Per,
https://lore.kernel.org/all/02e25e44-1146-bb59-58de-800b11d30e7b@xxxxxxxxxx/
I thought we agree they are not HW compatible, it is SW trick to make
Linux driver could work with both with i.MX7ULP compatible.

I will add more information in commit to describe breaking users.
BTW: in linux driver in this patchset, I have added code to support
legacy bindings.

Thanks,
Peng.

> 
> Best regards,
> Krzysztof