linux-kernel - Re: [PATCH v4 2/4] ASoC: dt-bindings: fsl,imx-asrc: update max interrupt numbers

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Date: Wed, 6 Mar 2024 17:00:59 -0600
From: Rob Herring <robh@...nel.org>
To: Frank Li <Frank.li@....com>
Cc: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, 
	Pengutronix Kernel Team <kernel@...gutronix.de>, Fabio Estevam <festevam@...il.com>, 
	Shengjiu Wang <shengjiu.wang@....com>, linux-sound@...r.kernel.org, 
	devicetree@...r.kernel.org, imx@...ts.linux.dev, 
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 2/4] ASoC: dt-bindings: fsl,imx-asrc: update max
 interrupt numbers

On Wed, Mar 6, 2024 at 2:53 PM Frank Li <Frank.li@....com> wrote:
>
> On Wed, Mar 06, 2024 at 02:25:37PM -0600, Rob Herring wrote:
> > On Tue, Mar 05, 2024 at 12:33:03PM -0500, Frank Li wrote:
> > > fsl,imx8qxp-spdif and fsl,imx8qm-spdif have 2 interrupts. Other platforms
> > > have 1 interrupt.
> > >
> > > Increase max interrupt number to 2 and add restriction for platforms except
> > > i.MX8QXP and i.MX8QM.
> > >
> > > Signed-off-by: Frank Li <Frank.Li@....com>
> > > ---
> > >  Documentation/devicetree/bindings/sound/fsl,spdif.yaml | 18 +++++++++++++++++-
> > >  1 file changed, 17 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/Documentation/devicetree/bindings/sound/fsl,spdif.yaml b/Documentation/devicetree/bindings/sound/fsl,spdif.yaml
> > > index 56f8c0c8afdea..7f6590708e1ec 100644
> > > --- a/Documentation/devicetree/bindings/sound/fsl,spdif.yaml
> > > +++ b/Documentation/devicetree/bindings/sound/fsl,spdif.yaml
> > > @@ -31,7 +31,8 @@ properties:
> > >      maxItems: 1
> > >
> > >    interrupts:
> > > -    maxItems: 1
> > > +    minItems: 1
> > > +    maxItems: 2
> > >
> > >    dmas:
> > >      items:
> > > @@ -101,6 +102,21 @@ required:
> > >  additionalProperties: false
> > >
> > >  allOf:
> > > +  - if:
> > > +      properties:
> > > +        compatible:
> > > +          enum:
> > > +            - fsl,imx8qm-spdif
> > > +            - fsl,imx8qxp-spdif
> > > +    then:
> > > +      properties:
> > > +        interrupts:
> > > +          minItems: 2
> >
> > Nowhere is it explained what the 2 interrupts are or what the order of
> > them is. Is the first interrupt the same as before, and there is a new
> > interrupt for something else? Or it's the same interrupts, but they've
> > just split up into 2?
>
> It is same one and split to tx and rx. Order doesn't matter.

Make that clear in the schema. Order does matter and you have to
define the order in the schema.

> They uses one
> irq handle.

What does that mean?

Rob