[PATCH v2 4/8] dt-bindings: sifive,ccache0: Support StarFive JH7110 SoC

[Conor Dooley]

On Tue, Nov 22, 2022 at 05:55:57PM +0800, Hal Feng wrote:
> On Tue, 22 Nov 2022 09:07:26 +0000, Conor Dooley wrote:
> > On Tue, Nov 22, 2022 at 04:40:23PM +0800, Hal Feng wrote:
> > > On Fri, 18 Nov 2022 19:39:52 +0800, Conor Dooley wrote:
> > > > On Fri, Nov 18, 2022 at 11:37:50AM +0000, Conor Dooley wrote:
> > > > > On Fri, Nov 18, 2022 at 09:17:10AM +0800, Hal Feng wrote:
> > > > > > From: Emil Renner Berthing <kernel at esmil.dk>
> > > > > > 
> > > > > > This cache controller is also used on the StarFive JH7110 SoC.
> > > > > 
> > > > > "... and configured identically to that of the FU740"?
> > > > > Anyways,
> > > > > Reviewed-by: Conor Dooley <conor.dooley at microchip.com>
> > > > 
> > > > Actually, after looking at the next patch - why can you not fall back to
> > > > the fu740 one since you appear to have the same configuration as it?
> > > 
> > > Right, I will drop this patch and use "sifive,fu740-c000-ccache" as
> > > compatible in dts.
> > 
> > Uh, that's not quite what I was suggesting. Rather than using that one
> > in isolation, you can do the following in your dt:
> > "starfive,jh7110-ccache", "sifive,fu740-c000-ccache"
> > 
> > And then in the driver we need to make no changes - unless down the line
> > we find some sort of issue that requires special handling etc. There's
> > no harm in having a "starfive,jh7110-ccache" IMO.
> 
> Just like what microchip did as blow?
> 
> Documentation/devicetree/bindings/riscv/sifive,ccache0.yaml:
> properties:
>   compatible:
>     oneOf:
>       - items:
>           - enum:
>               - sifive,ccache0
>               - sifive,fu540-c000-ccache
>               - sifive,fu740-c000-ccache
>               - starfive,jh7110-ccache
>           - const: cache
>       - items:
>           - const: microchip,mpfs-ccache
>           - const: sifive,fu540-c000-ccache
>           - const: cache

No, I don't think this is correct either. You'd do something like:

>       - items:
>           - const: starfive,jh7110-ccache
>           - const: sifive,fu740-c000-ccache
>           - const: cache

And then the driver needs no changes.
Thanks,
Conor.