Re: [PATCH 1/2] dt-bindings: pwm: sophgo: add bindings for sg2042

[Chen Wang]

On 2024/9/6 10:44, Yixun Lan wrote:
> On 20:10 Thu 05 Sep     , Chen Wang wrote:
> > From: Chen Wang <unicorn_wang@xxxxxxxxxxx>
> >
> > Add binding document for sophgo,sg2042-pwm.
> >
> > Signed-off-by: Chen Wang <unicorn_wang@xxxxxxxxxxx>
> > ---
> >   .../bindings/pwm/sophgo,sg2042-pwm.yaml       | 52 +++++++++++++++++++
> >   1 file changed, 52 insertions(+)
> >   create mode 100644 Documentation/devicetree/bindings/pwm/sophgo,sg2042-pwm.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/pwm/sophgo,sg2042-pwm.yaml b/Documentation/devicetree/bindings/pwm/sophgo,sg2042-pwm.yaml
> > new file mode 100644
> > index 000000000000..10212694dd41
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/pwm/sophgo,sg2042-pwm.yaml
> > @@ -0,0 +1,52 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/pwm/sophgo,sg2042-pwm.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Sophgo SG2042 PWM controller
> > +
> > +maintainers:
> > +  - Chen Wang <unicorn_wang@xxxxxxxxxxx>
> > +
> > +description: |
> you can drop | here
Ack and thanks.
> > +  This controller contains 4 channels which can generate PWM waveforms.
> > +
> > +allOf:
> > +  - $ref: pwm.yaml#
> > +
> > +properties:
> > +  compatible:
> > +    const: sophgo,sg2042-pwm
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    maxItems: 1
> > +
> > +  clock-names:
> > +    items:
> > +      - const: apb
> > +
> > +  "#pwm-cells":
> ..
> > +    # See pwm.yaml in this directory for a description of the cells format.
> I think you can drop this comment, since no useful information added
> also it's already refered to standard pwm.yaml
I add this comment just want to reminder.  Ok, anyway, it can be removed 
to make doc clear.
> > +    const: 2
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - clocks
> > +  - clock-names
> also "#pwm-cells"?
I think it has been required in pwm.yaml, so no need to required it 
again here.
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    pwm@7f006000 {
> > +        compatible = "sophgo,sg2042-pwm";
> > +        reg = <0x7f006000 0x1000>;
> > +        #pwm-cells = <2>;
> > +        clocks = <&clock 67>;
> > +        clock-names = "apb";
> > +    };
> > --
> > 2.34.1