linux-kernel - Re: [PATCH 03/17] dt-bindings: ufs: exynos-ufs: Add gs101 compatible

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Date: Tue, 16 Apr 2024 12:30:45 +0100
From: Peter Griffin <peter.griffin@...aro.org>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: mturquette@...libre.com, sboyd@...nel.org, robh@...nel.org, 
	krzk+dt@...nel.org, conor+dt@...nel.org, vkoul@...nel.org, kishon@...nel.org, 
	alim.akhtar@...sung.com, avri.altman@....com, bvanassche@....org, 
	s.nawrocki@...sung.com, cw00.choi@...sung.com, jejb@...ux.ibm.com, 
	martin.petersen@...cle.com, chanho61.park@...sung.com, ebiggers@...nel.org, 
	linux-scsi@...r.kernel.org, linux-phy@...ts.infradead.org, 
	devicetree@...r.kernel.org, linux-clk@...r.kernel.org, 
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org, tudor.ambarus@...aro.org, 
	andre.draszik@...aro.org, saravanak@...gle.com, willmcvicker@...gle.com
Subject: Re: [PATCH 03/17] dt-bindings: ufs: exynos-ufs: Add gs101 compatible

Hi Krzysztof,

Thanks for the review.

On Fri, 5 Apr 2024 at 08:49, Krzysztof Kozlowski <krzk@...nel.org> wrote:
>
> On 04/04/2024 14:25, Peter Griffin wrote:
> > Add dedicated google,gs101-ufs compatible for Google Tensor gs101
> > SoC.
> >
> > Signed-off-by: Peter Griffin <peter.griffin@...aro.org>
> > ---
> >  .../bindings/ufs/samsung,exynos-ufs.yaml      | 51 +++++++++++++++----
> >  1 file changed, 42 insertions(+), 9 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/ufs/samsung,exynos-ufs.yaml b/Documentation/devicetree/bindings/ufs/samsung,exynos-ufs.yaml
> > index b2b509b3944d..898da6c0e94f 100644
> > --- a/Documentation/devicetree/bindings/ufs/samsung,exynos-ufs.yaml
> > +++ b/Documentation/devicetree/bindings/ufs/samsung,exynos-ufs.yaml
> > @@ -12,12 +12,10 @@ maintainers:
> >  description: |
> >    Each Samsung UFS host controller instance should have its own node.
> >
> > -allOf:
> > -  - $ref: ufs-common.yaml
> > -
> >  properties:
> >    compatible:
> >      enum:
> > +      - google,gs101-ufs
> >        - samsung,exynos7-ufs
> >        - samsung,exynosautov9-ufs
> >        - samsung,exynosautov9-ufs-vh
> > @@ -38,14 +36,12 @@ properties:
> >        - const: ufsp
> >
> >    clocks:
> > -    items:
> > -      - description: ufs link core clock
> > -      - description: unipro main clock
> > +    minItems: 2
> > +    maxItems: 5
>
> Keep here minItems and:
>
> +            - description: ufs link core clock
> +            - description: unipro main clock
> +            - description: fmp clock
> +            - description: ufs aclk clock
> +            - description: ufs pclk clock
>
> >
> >    clock-names:
> > -    items:
> > -      - const: core_clk
> > -      - const: sclk_unipro_main
> > +    minItems: 2
> > +    maxItems: 5
>
> Similarly here
>
> >
> >    phys:
> >      maxItems: 1
> > @@ -72,6 +68,43 @@ required:
> >    - clocks
> >    - clock-names
> >
> > +allOf:
> > +  - $ref: ufs-common.yaml
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            const: google,gs101-ufs
> > +
> > +    then:
> > +      properties:
> > +        clocks:
>
> Enough is:
> minItems: 5
>
> > +          items:
>
> and drop the items since they are defined in top-level.
>
> Your original code is correct, but with my approach we keep the list
> synced between variants, at least part of the list. If another variant
> appears, then maybe it will go back to your approach, but maybe we can
> still have the same clocks and their order.

Will update like you suggest in v2.

Thanks,

Peter