Re: [PATCH v6 1/2] dt-bindings: dma: snps,dw-axi-dmac: Add fallback compatible for CV1800B

Conor Dooley <[email protected]> Tue, 12 May 2026 17:57:22 +0100

Newsgroups	dev.linux.lists.sophgo,org.infradead.lists.linux-riscv,org.kernel.vger.dmaengine,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel
Message-ID	<20260512-shudder-repressed-204473e32978@spud>

On Tue, May 12, 2026 at 06:04:36AM +0800, Inochi Amaoto wrote:
> On Mon, May 11, 2026 at 05:01:01PM +0100, Conor Dooley wrote:
> > On Mon, May 11, 2026 at 02:38:16PM +0800, Inochi Amaoto wrote:
> > > The previous version of the binding change only add compatible
> > > string without adding the fallback compatible, this breaks
> > > backward compatibility. Add the needed fallback compatible to
> > > fix this.
> > 
> > I don't understand how adding a specific comaptible affected backwards
> > compatibility. Did the dts originally use the snps compatible before the
> > device specific one was added?
> > 
> 
> Yes, the device is already in DTS, and since I find an quirk for
> it. A new compatible with fallback is necessary.

Acked-by: Conor Dooley <[email protected]>
pw-bot: not-applicable

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