linux-kernel - Re: [PATCH v2 2/3] dt-bindings: mailbox: Add interrupt-names to SPRD mailbox

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Date:   Mon, 8 Mar 2021 16:29:57 +0800
From:   Orson Zhai <orsonzhai@...il.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Baolin Wang <baolin.wang7@...il.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Jassi Brar <jassisinghbrar@...il.com>,
        Mark Brown <broonie@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Haidong Yao <yaohaidong369@...il.com>,
        Orson Zhai <orson.zhai@...soc.com>
Subject: Re: [PATCH v2 2/3] dt-bindings: mailbox: Add interrupt-names to SPRD
 mailbox

Hi Rob,

On Fri, Mar 05, 2021 at 03:22:21PM -0600, Rob Herring wrote:
> On Sat, Feb 13, 2021 at 08:21:42PM +0800, Orson Zhai wrote:
> > From: Orson Zhai <orson.zhai@...soc.com>
> > 
> > We add an optional supp-outbox interrupt support to SPRD mailbox driver
> > with newly added sc9863a support and change to configure interrupts with
> > names in device tree files.
> > 
> > Signed-off-by: Orson Zhai <orson.zhai@...soc.com>
> > ---
> >  .../bindings/mailbox/sprd-mailbox.yaml         | 18 +++++++++++++++---
> >  1 file changed, 15 insertions(+), 3 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/mailbox/sprd-mailbox.yaml b/Documentation/devicetree/bindings/mailbox/sprd-mailbox.yaml
> > index 26a5cca3f838..67736450ee93 100644
> > --- a/Documentation/devicetree/bindings/mailbox/sprd-mailbox.yaml
> > +++ b/Documentation/devicetree/bindings/mailbox/sprd-mailbox.yaml
> > @@ -15,6 +15,7 @@ properties:
> >    compatible:
> >      enum:
> >        - sprd,sc9860-mailbox
> > +      - sprd,sc9863a-mailbox
> >  
> >    reg:
> >      items:
> > @@ -22,9 +23,18 @@ properties:
> >        - description: outbox registers' base address
> >  
> >    interrupts:
> > -    items:
> > -      - description: inbox interrupt
> > -      - description: outbox interrupt
> > +    minItems: 2
> > +    maxItems: 3
> > +
> > +  interrupt-names:
> > +    oneOf:
> > +      - items:
> > +          - const: inbox
> > +          - const: outbox
> > +      - items:
> > +          - const: inbox
> > +          - const: outbox
> > +          - const: supp-outbox
> 
> You can do this instead:
> 
> interrupt-names:
>   minItems: 2
>   items:
>     - const: inbox
>     - const: outbox
>     - const: supp-outbox

Does this mean only the first 2 items in the minimum range?

For example, "inbox" + "supp-outbox" is not supposed to be a valid combination. 

Only "supp-outbox" is optional and the other two are mandatory.

Best,
Orson

> 
> >  
> >    clocks:
> >      maxItems: 1
> > @@ -40,6 +50,7 @@ required:
> >    - compatible
> >    - reg
> >    - interrupts
> > +  - interrupt-names
> >    - "#mbox-cells"
> >    - clocks
> >    - clock-names
> > @@ -56,5 +67,6 @@ examples:
> >        clock-names = "enable";
> >        clocks = <&aon_gate 53>;
> >        interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
> > +      interrupt-names = "inbox", "outbox";
> >      };
> >  ...
> > -- 
> > 2.17.1
> >