Re: [PATCH 1/6] dt-bindings: loongarch: Add CPU bindings for LoongArch

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On 17 June 2023 07:29:06 IST, Binbin Zhou <zhoubb.aaron@xxxxxxxxx> wrote:
>On Fri, Jun 16, 2023 at 5:34 PM Conor Dooley <conor.dooley@xxxxxxxxxxxxx> wrote:
>>
>> On Fri, Jun 16, 2023 at 02:10:38PM +0800, Binbin Zhou wrote:
>> > Add the available CPUs in LoongArch binding with DT schema format using
>> > json-schema.
>> >
>> > Signed-off-by: Binbin Zhou <zhoubinbin@xxxxxxxxxxx>
>> > ---
>> >  .../devicetree/bindings/loongarch/cpus.yaml   | 65 +++++++++++++++++++
>> >  1 file changed, 65 insertions(+)
>> >  create mode 100644 Documentation/devicetree/bindings/loongarch/cpus.yaml
>> >
>> > diff --git a/Documentation/devicetree/bindings/loongarch/cpus.yaml b/Documentation/devicetree/bindings/loongarch/cpus.yaml
>> > new file mode 100644
>> > index 000000000000..c3e2dba42c81
>> > --- /dev/null
>> > +++ b/Documentation/devicetree/bindings/loongarch/cpus.yaml
>> > @@ -0,0 +1,65 @@
>> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> > +%YAML 1.2
>> > +---
>> > +$id: http://devicetree.org/schemas/loongarch/cpus.yaml#
>> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> > +
>> > +title: LoongArch CPUs
>> > +
>> > +maintainers:
>> > +  - Binbin Zhou <zhoubinbin@xxxxxxxxxxx>
>> > +
>> > +description:
>> > +  The device tree allows to describe the layout of CPUs in a system through
>> > +  the "cpus" node, which in turn contains a number of subnodes (ie "cpu")
>> > +  defining properties for every CPU.
>> > +
>> > +properties:
>> > +  compatible:
>> > +    enum:
>> > +      - loongson,la264
>> > +      - loongson,la364
>> > +
>> > +  reg:
>> > +    maxItems: 1
>> > +
>> > +  device_type: true
>> > +
>> > +  clock-frequency:
>> > +    description: The frequency of cpu in Hz.
>>
>> Why don't you just add a ref to the common cpu schema and use the
>> standard properties for communicating clock frequencies?
>> You then get the standard properties for l1 caches, power management,
>> frequency scaling etc as a side effect.
>
>Hi Conor:
>
>Sorry, not sure if I understand correctly. Do the standard attributes
>refer to the following:
>
>power-domains = <>
>clocks = <>
>i-cache-size = <>
>d-cache-size = <>
>next-level-cache = <>

Yes, those are the sort of things I meant.

Cheers,
Conor.




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