Re: [PATCH 08/12] dt-bindings: net: snps,dwmac: Add compatible for UltraRISC DP1000 SoC

Conor Dooley <[email protected]> Mon, 24 Aug 2026 18:13:25 +0100

Newsgroups	org.infradead.lists.linux-riscv,org.kernel.vger.dmaengine,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-i2c,org.kernel.vger.linux-kernel,org.kernel.vger.linux-spi,org.kernel.vger.netdev
Message-ID	<20260824-blimp-spirited-01365897db24@spud>

On Mon, Aug 24, 2026 at 06:09:48PM +0100, Conor Dooley wrote:
> On Mon, Aug 24, 2026 at 01:54:21PM +0800, Jia Wang via B4 Relay wrote:
> > From: Jia Wang <[email protected]>
> > 
> > Add the SoC-specific compatible string for the UltraRISC DP1000 GMAC
> > controller to the DesignWare MAC binding.
> > 
> > Signed-off-by: Jia Wang <[email protected]>
> 
> The dts may not be right, but I am also a bit concerned here.
> 
> This binding permits 100s of combinations of properties, of which only
> a very limited set can be correct for your device. Just adding the
> compatible permits all of this variation.
> 
> Please add some restrictions.

In fact, it's particularly bad here because you don't even restrict
which fallback compatibles are used, so there's no guidance on what
version of the IP is even in use!

> 
> pw-bot: changes-requested
> 
> Thanks,
> Conor.
> 
> > ---
> >  Documentation/devicetree/bindings/net/snps,dwmac.yaml | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> > index 2449311c6d28..2ed4564ae99d 100644
> > --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> > +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> > @@ -119,6 +119,7 @@ properties:
> >          - starfive,jh7110-dwmac
> >          - tesla,fsd-ethqos
> >          - thead,th1520-gmac
> > +        - ultrarisc,dp1000-gmac
> >  
> >    reg:
> >      minItems: 1
> > 
> > -- 
> > 2.34.1
> > 
> > 
> > 
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> > [email protected]
> > http://lists.infradead.org/mailman/listinfo/linux-riscv

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