linux-kernel - Re: [PATCH v3 2/4] ASoC: dt-bindings: fsl,imx-asrc: update max interrupt numbers

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Date: Fri, 1 Mar 2024 10:39:43 -0500
From: Frank Li <Frank.li@....com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
	Rob Herring <robh@...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 v3 2/4] ASoC: dt-bindings: fsl,imx-asrc: update max
 interrupt numbers

On Fri, Mar 01, 2024 at 07:30:45AM +0100, Krzysztof Kozlowski wrote:
> On 01/03/2024 05:03, Frank Li wrote:
> > On Thu, Feb 29, 2024 at 10:44:42AM +0100, Krzysztof Kozlowski wrote:
> >> On 28/02/2024 20:14, 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>
> >>> ---
> >>>  .../devicetree/bindings/sound/fsl,spdif.yaml         | 20 +++++++++++++++++++-
> >>>  1 file changed, 19 insertions(+), 1 deletion(-)
> >>>
> >>> diff --git a/Documentation/devicetree/bindings/sound/fsl,spdif.yaml b/Documentation/devicetree/bindings/sound/fsl,spdif.yaml
> >>> index 82430f1d5e5a2..785f7997eea82 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:
> >>> @@ -100,6 +101,23 @@ required:
> >>>  
> >>>  additionalProperties: false
> >>>  
> >>> +allOf:
> >>> +  - if:
> >>> +      properties:
> >>> +        compatible:
> >>> +          enum:
> >>> +            - fsl,imx35-spdif
> >>> +            - fsl,vf610-spdif
> >>> +            - fsl,imx6sx-spdif
> >>> +            - fsl,imx8mq-spdif
> >>> +            - fsl,imx8mm-spdif
> >>> +            - fsl,imx8mn-spdif
> >>> +            - fsl,imx8ulp-spdif
> >>> +    then:
> >>> +      properties:
> >>> +        interrupts:
> >>> +          maxItems: 1
> >>
> >> else:
> >> minItems: 2
> > 
> > I think needn't 'else' here. Top have set to maxItems is 2. 
> 
> So explain why one item is correct here.

Top interrupt: maxItems: 2. That's means all compatible string (include
imx8qxp, and imx8qm) required interrrupt number less than 2.

other compatible string (except imx8qxp and imx8qm) already listed in
'enum', have additional requirement <= 1, which match original requirement.

simple said:

set[all] <=2
set[fsl,imx35-spdif...] <= 1

So it is the same as

set [all] <= 2
set [fsl,imx35-spdif..] <=1
set [qxp, qm] <= 2

> 
> 
> Best regards,
> Krzysztof
>