Re: [PATCH v3 3/6] dt-bindings: clock: imx8mp: Add reset-controller sub-node

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On Wed, May 15, 2024 at 5:09 AM Stephen Boyd <sboyd@xxxxxxxxxx> wrote:
>
> Quoting Conor Dooley (2024-05-14 11:06:14)
> > On Tue, May 14, 2024 at 05:33:27PM +0800, Shengjiu Wang wrote:
> > > diff --git a/Documentation/devicetree/bindings/clock/imx8mp-audiomix.yaml b/Documentation/devicetree/bindings/clock/imx8mp-audiomix.yaml
> > > index 0a6dc1a6e122..a403ace4d11f 100644
> > > --- a/Documentation/devicetree/bindings/clock/imx8mp-audiomix.yaml
> > > +++ b/Documentation/devicetree/bindings/clock/imx8mp-audiomix.yaml
> > > @@ -15,7 +15,10 @@ description: |
> > >
> > >  properties:
> > >    compatible:
> > > -    const: fsl,imx8mp-audio-blk-ctrl
> > > +    items:
> > > +      - const: fsl,imx8mp-audio-blk-ctrl
> > > +      - const: syscon
> > > +      - const: simple-mfd
> > >
> > >    reg:
> > >      maxItems: 1
> > > @@ -44,6 +47,11 @@ properties:
> > >        ID in its "clocks" phandle cell. See include/dt-bindings/clock/imx8mp-clock.h
> > >        for the full list of i.MX8MP IMX8MP_CLK_AUDIOMIX_ clock IDs.
> > >
> > > +  reset-controller:
> > > +    type: object
> > > +    $ref: /schemas/reset/fsl,imx8mp-audiomix-reset.yaml#
> > > +    description: The child reset devices of AudioMIX Block Control.
> >
> > Why not just set #reset-cells = <1> in the existing node? IIRC it was
> > already suggested to you to do that and use auxdev to set up the reset
> > driver.
>
> Yes, do that.

Can I know why sub nodes can't be used? the relationship of parent and
child devices looks better with sub nodes.

A further question is can I use the reset-ti-syscon? which is a generic reset
device for SoCs.  with it I don't even need to write a new reset device driver.
it is more simple.

Best regards
Shengjiu Wang





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