linux-kernel - Re: [PATCH 2/2] dt-bindings: PCI: mediatek-gen3: Add new clock name

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Date:   Thu, 21 Jul 2022 16:44:08 +0800
From:   Jianjun Wang <jianjun.wang@...iatek.com>
To:     Rob Herring <robh@...nel.org>
CC:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        <linux-pci@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Ryder Lee <ryder.lee@...iatek.com>, <Rex-BC.Chen@...iatek.com>,
        <TingHan.Shen@...iatek.com>, <Liju-clr.Chen@...iatek.com>,
        <Jian.Yang@...iatek.com>
Subject: Re: [PATCH 2/2] dt-bindings: PCI: mediatek-gen3: Add new clock name

Hi Rob,

Thanks for your comment.

On Wed, 2022-07-20 at 16:24 -0600, Rob Herring wrote:
> On Sat, Jul 16, 2022 at 03:43:49PM +0800, Jianjun Wang wrote:
> > MT8188 and MT8195 use clock "peri_mem" instead of "top_133m", add
> > new
> > clock name "peri_mem" for MT8188 and MT8195.
> 
> This should be part of patch 1.

Sure, I'll merge these two patches into one in the next version.

> 
> Clock names for IP blocks should be local to the IP block. IOW,
> named 
> after the input name for the clocks or what their function is if you 
> don't know that. Neither the old names nor the new name seem to
> follow 
> this. At least make the new name follow that convention.

Sorry, I'm not sure if I understand correctly, would you mind providing
an example of this change?

Thanks.

> 
> > 
> > Signed-off-by: Jianjun Wang <jianjun.wang@...iatek.com>
> > ---
> >  .../bindings/pci/mediatek-pcie-gen3.yaml      | 42 ++++++++++++++-
> > ----
> >  1 file changed, 32 insertions(+), 10 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/pci/mediatek-pcie-
> > gen3.yaml b/Documentation/devicetree/bindings/pci/mediatek-pcie-
> > gen3.yaml
> > index 67d2ba25e336..038e25ae0be7 100644
> > --- a/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml
> > +++ b/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml
> > @@ -43,9 +43,6 @@ description: |+
> >    each set has its own address for MSI message, and supports 32
> > MSI vectors
> >    to generate interrupt.
> >  
> > -allOf:
> > -  - $ref: /schemas/pci/pci-bus.yaml#
> > -
> >  properties:
> >    compatible:
> >      oneOf:
> > @@ -85,13 +82,7 @@ properties:
> >      maxItems: 6
> >  
> >    clock-names:
> > -    items:
> > -      - const: pl_250m
> > -      - const: tl_26m
> > -      - const: tl_96m
> > -      - const: tl_32k
> > -      - const: peri_26m
> > -      - const: top_133m
> > +    maxItems: 6
> >  
> >    assigned-clocks:
> >      maxItems: 1
> > @@ -133,9 +124,40 @@ required:
> >    - interrupts
> >    - ranges
> >    - clocks
> > +  - clock-names
> >    - '#interrupt-cells'
> >    - interrupt-controller
> >  
> > +allOf:
> > +  - $ref: /schemas/pci/pci-bus.yaml#
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - mediatek,mt8188-pcie
> > +              - mediatek,mt8195-pcie
> > +    then:
> > +      properties:
> > +        clock-names:
> > +          items:
> > +            - const: pl_250m
> > +            - const: tl_26m
> > +            - const: tl_96m
> > +            - const: tl_32k
> > +            - const: peri_26m
> > +            - const: peri_mem
> > +    else:
> > +      properties:
> > +        clock-names:
> > +          items:
> > +            - const: pl_250m
> > +            - const: tl_26m
> > +            - const: tl_96m
> > +            - const: tl_32k
> > +            - const: peri_26m
> > +            - const: top_133m
> > +
> >  unevaluatedProperties: false
> >  
> >  examples:
> > -- 
> > 2.18.0
> > 
> >