Re: [PATCH 1/5] dt-bindings: arm: altera: fix Agilex72 compatible vendor prefix

[Rob Herring <robh@kernel.org>]

On Tue, Aug 18, 2026 at 04:19:22PM +0800, Chiam, Evon wrote:
> 
> 
> On 15/8/2026 1:35 am, Rob Herring wrote:
> > On Fri, Aug 14, 2026 at 04:18:59PM +0800, Chiam, Evon wrote:
> > > 
> > > 
> > > On 12/8/2026 10:49 am, Rob Herring wrote:
> > > > On Thu, Aug 06, 2026 at 05:25:01PM +0800, evon.chiam@altera.com wrote:
> > > > > From: "Chiam, Evon" <evon.chiam@altera.com>
> > > > > 
> > > > > Altera has separated from Intel. Update the Agilex72 SoC and board
> > > > > compatible strings to use the Altera vendor prefix instead of intel.
> > > > 
> > > > Sorry, without better reasoning, you are stuck with them as sashiko
> > > > pointed out.
> > > > 
> > > Sashiko’s comment on the DTS still using the intel compatible strings was
> > > based on reviewing patch 1/5 alone. Patch 4/5 moves the Agilex72 DT from
> > > arch/arm64/boot/dts/intel/ to arch/arm64/boot/dts/altera/ and updates the
> > > compatible strings to altr. With both patches applied, the bindings and DTS
> > > remain consistent.
> > > 
> > > Would you prefer that I combine the patches 1/5 and 4/5 into a single patch
> > > so the binding and DTS updates land together?
> > 
> > Moving the dts directory is fine (though that is really up to SoC
> > maintainers). Changing compatible strings is not. It is not about the
> > patch split. It is an ABI. There are exceptions though. Generally that
> > is if there is no one with the h/w or the current .dts is so incomplete
> > that anyone using the h/w will need to update their DTB anyways.
> > 
> > Rob
> 
> Thanks for clarifying.
> 
> To provide some context, Agilex72 DTS is still at an early
> stage of development, and most people do not have access to the
> hardware yet. Anyone using the current DTS would need to update their
> DTB, so changing the compatible strings at this stage should
> not cause ABI issues.

This information needs to go in the commit msg.

Rob