linux-kernel - RE: [PATCH V4 2/5] dt-bindings: mailbox: imx-mu: add i.MX93 S4 MU support

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Date:   Fri, 25 Feb 2022 01:46:15 +0000
From:   Peng Fan <peng.fan@....com>
To:     Rob Herring <robh@...nel.org>,
        "Peng Fan (OSS)" <peng.fan@....nxp.com>
CC:     "jassisinghbrar@...il.com" <jassisinghbrar@...il.com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        dl-linux-imx <linux-imx@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "krzysztof.kozlowski@...onical.com" 
        <krzysztof.kozlowski@...onical.com>,
        Daniel Baluta <daniel.baluta@....com>
Subject: RE: [PATCH V4 2/5] dt-bindings: mailbox: imx-mu: add i.MX93 S4 MU
 support

> Subject: Re: [PATCH V4 2/5] dt-bindings: mailbox: imx-mu: add i.MX93 S4 MU
> support
> 
> On Wed, Feb 23, 2022 at 10:31:54AM +0800, Peng Fan (OSS) wrote:
> > From: Peng Fan <peng.fan@....com>
> >
> > Similar to i.MX8ULP S4 MU, i.MX93 MU is dedicated for communication
> > between Sentinel and Cortex-A cores from hardware design, it could not
> > be reused for other purpose.
> >
> > However i.MX93 S4 MU use separate tx/rx interrupt, so update
> > interrupts and add interrupt-names property.
> >
> > Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
> > Signed-off-by: Peng Fan <peng.fan@....com>
> > ---
> >  .../devicetree/bindings/mailbox/fsl,mu.yaml   | 27
> ++++++++++++++++++-
> >  1 file changed, 26 insertions(+), 1 deletion(-)
> >
> > diff --git a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
> > b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
> > index 6d056d5e16bf..f5f9d501845d 100644
> > --- a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
> > +++ b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
> > @@ -29,6 +29,7 @@ properties:
> >        - const: fsl,imx8ulp-mu
> >        - const: fsl,imx8-mu-scu
> >        - const: fsl,imx8-mu-seco
> > +      - const: fsl,imx93-mu-s4
> >        - const: fsl,imx8ulp-mu-s4
> >        - items:
> >            - const: fsl,imx93-mu
> > @@ -55,7 +56,13 @@ properties:
> >      maxItems: 1
> >
> >    interrupts:
> > -    maxItems: 1
> > +    minItems: 1
> 
> I still don't think you tested this with 2 items. You need minItems and
> maxItems.

dt_binding check and dtbs_check both pass two interrupts entry.

So here it should be?
interrupts:
 minItems: 1
 maxItems: 2 

> 
> > +
> > +  interrupt-names:
> > +    minItems: 1
> > +    items:
> > +      - const: tx
> > +      - const: rx
> >
> >    "#mbox-cells":
> >      description: |
> > @@ -90,6 +97,24 @@ required:
> >    - interrupts
> >    - "#mbox-cells"
> >
> > +allOf:
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          enum:
> > +            - fsl,imx93-mu-s4
> > +    then:
> > +      properties:
> > +        interrupt-names:
> > +          minItems: 2
> > +        interrupts:
> > +          maxItems: 2
> 
> s/maxItems/minItems/

Fix  in V5.

Thanks,
Peng.

> 
> > +
> > +    else:
> > +      properties:
> > +        interrupts:
> > +          maxItems: 1
> > +
> >  additionalProperties: false
> >
> >  examples:
> > --
> > 2.25.1
> >
> >