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From:   Rob Herring <robh+dt@kernel.org>
Date:   Fri, 15 Nov 2019 11:41:04 -0600
Message-ID: <CAL_JsqKkbrF935JoVELqVpqj3fEwzpTn_xNuOS74uUragJZpHA@mail.gmail.com>
Subject: Re: [PATCH] dt-bindings: interrupt-controller: Convert stm32-exti to json-schema
To:     Alexandre Torgue <alexandre.torgue@st.com>
Cc:     Mark Rutland <mark.rutland@arm.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Jason Cooper <jason@lakedaemon.net>,
        Marc Zyngier <maz@kernel.org>, devicetree@vger.kernel.org,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@lists.infradead.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        linux-stm32@st-md-mailman.stormreply.com
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On Fri, Nov 15, 2019 at 11:28 AM Alexandre Torgue
<alexandre.torgue@st.com> wrote:
>
>
>
> On 11/14/19 6:18 PM, Rob Herring wrote:
> > On Thu, Nov 14, 2019 at 10:41 AM Alexandre Torgue
> > <alexandre.torgue@st.com> wrote:
> >>
> >> Convert the STM32 external interrupt controller (EXTI) binding to DT
> >> schema format using json-schema.
> >>
> >> Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
> >> ---
> >>
> >> Hi Rob,
> >>
> >> I planned to use "additionalProperties: false" for this schema but as I add a
> >> property under condition, I got an error (property added under contion seems
> >> to be detected as an "additional" property and then error is raised).
> >>
> >> Is there a way to fix that ?
> >
> > See below.
> >
> >>
> >> regards
> >> Alex
> >>
> >> diff --git a/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.txt b/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.txt
> >> deleted file mode 100644
> >> index cd01b2292ec6..000000000000
> >> --- a/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.txt
> >> +++ /dev/null
> >> @@ -1,29 +0,0 @@
> >> -STM32 External Interrupt Controller
> >> -
> >> -Required properties:
> >> -
> >> -- compatible: Should be:
> >> -    "st,stm32-exti"
> >> -    "st,stm32h7-exti"
> >> -    "st,stm32mp1-exti"
> >> -- reg: Specifies base physical address and size of the registers
> >> -- interrupt-controller: Indentifies the node as an interrupt controller
> >> -- #interrupt-cells: Specifies the number of cells to encode an interrupt
> >> -  specifier, shall be 2
> >> -- interrupts: interrupts references to primary interrupt controller
> >> -  (only needed for exti controller with multiple exti under
> >> -  same parent interrupt: st,stm32-exti and st,stm32h7-exti)
> >> -
> >> -Optional properties:
> >> -
> >> -- hwlocks: reference to a phandle of a hardware spinlock provider node.
> >> -
> >> -Example:
> >> -
> >> -exti: interrupt-controller@40013c00 {
> >> -       compatible = "st,stm32-exti";
> >> -       interrupt-controller;
> >> -       #interrupt-cells = <2>;
> >> -       reg = <0x40013C00 0x400>;
> >> -       interrupts = <1>, <2>, <3>, <6>, <7>, <8>, <9>, <10>, <23>, <40>, <41>, <42>, <62>, <76>;
> >> -};
> >> diff --git a/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.yaml b/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.yaml
> >> new file mode 100644
> >> index 000000000000..39be37e1e532
> >> --- /dev/null
> >> +++ b/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.yaml
> >> @@ -0,0 +1,82 @@
> >> +# SPDX-License-Identifier: GPL-2.0
> >
> > If ST has copyright on the old binding, can you add BSD here.
> >
>
> I will.
>
> >> +%YAML 1.2
> >> +---
> >> +$id: http://devicetree.org/schemas/interrupt-controller/st,stm32-exti.yaml#
> >> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> >> +
> >> +title: STM32 External Interrupt Controller Device Tree Bindings
> >> +
> >> +maintainers:
> >> +  - Alexandre Torgue <alexandre.torgue@st.com>
> >> +  - Ludovic Barre <ludovic.barre@st.com>
> >> +
> >> +properties:
> >> +  compatible:
> >> +    oneOf:
> >> +      - items:
> >> +        - enum:
> >> +          - st,stm32-exti
> >> +          - st,stm32h7-exti
> >> +      - items:
> >> +        - enum:
> >> +          - st,stm32mp1-exti
> >> +        - const: syscon
> >> +
> >> +  "#interrupt-cells":
> >> +    const: 2
> >> +
> >> +  reg:
> >> +    maxItems: 1
> >> +
> >> +  interrupt-controller: true
> >> +
> >> +  hwlocks:
> >> +    maxItems: 1
> >> +    description:
> >> +      Reference to a phandle of a hardware spinlock provider node.
> >> +
> >> +required:
> >> +  - "#interrupt-cells"
> >> +  - compatible
> >> +  - reg
> >> +  - interrupt-controller
> >> +
> >> +allOf:
> >> +  - $ref: /schemas/interrupt-controller.yaml#
> >> +  - if:
> >> +      properties:
> >> +        compatible:
> >> +          contains:
> >> +            enum:
> >> +              - st,stm32-exti
> >> +              - st,stm32h7-exti
> >> +    then:
> >> +      properties:
> >> +        interrupts:
> >> +          allOf:
> >> +            - $ref: /schemas/types.yaml#/definitions/uint32-array
> >
> > Standard property, doesn't need a type. You just need 'maxItems' or an
> > 'items' list if the index is not meaningful. This appears to be the
> > former case.
>
> ok
>
> >
> >> +          description:
> >> +            Interrupts references to primary interrupt controller
> >> +      required:
> >> +        - interrupts
> >
> > You can move the definition to the main section as you only need
> > 'required' here. That should fix your additionalProperties issue.
> >
> Doing that it fails as I don't have interrupts define for mp1
> compatible. Maybe I missed something ?

Like this:

properties:
  ...
  interrupts:
    maxItems: ??
    minItems: ??

allOf:
  - $ref: /schemas/interrupt-controller.yaml#
  - if:
      properties:
        compatible:
          contains:
            enum:
              - st,stm32-exti
              - st,stm32h7-exti
    then:
      required:
        - interrupts