linux-kernel - Re: [RFC PATCH v4 1/5] dt-bindings: interrupt-controller: Add Renesas RZ/G2L Interrupt Controller

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Date:   Thu, 17 Mar 2022 14:34:33 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     "Lad, Prabhakar" <prabhakar.csengg@...il.com>
Cc:     Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        LKML <linux-kernel@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Biju Das <biju.das.jz@...renesas.com>
Subject: Re: [RFC PATCH v4 1/5] dt-bindings: interrupt-controller: Add Renesas
 RZ/G2L Interrupt Controller

On 17/03/2022 12:55, Lad, Prabhakar wrote:
> Hi Krzysztof,
> 
> Thank you for the review.
> 
> On Thu, Mar 17, 2022 at 9:44 AM Krzysztof Kozlowski <krzk@...nel.org> wrote:
>>
>> On 17/03/2022 02:24, Lad Prabhakar wrote:
>>> Add DT bindings for the Renesas RZ/G2L Interrupt Controller.
>>>
>>> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
>>> ---
>>>  .../renesas,rzg2l-irqc.yaml                   | 131 ++++++++++++++++++
>>>  1 file changed, 131 insertions(+)
>>>  create mode 100644 Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml
>>>
>>> diff --git a/Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml b/Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml
>>> new file mode 100644
>>> index 000000000000..a14492ec9235
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml
>>> @@ -0,0 +1,131 @@
>>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>>> +%YAML 1.2
>>> +---
>>> +$id: http://devicetree.org/schemas/interrupt-controller/renesas,rzg2l-irqc.yaml#
>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>> +
>>> +title: Renesas RZ/G2L (and alike SoC's) Interrupt Controller (IA55)
>>> +
>>> +maintainers:
>>> +  - Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
>>> +  - Geert Uytterhoeven <geert+renesas@...der.be>
>>> +
>>> +description: |
>>> +  IA55 performs various interrupt controls including synchronization for the external
>>> +  interrupts of NMI, IRQ, and GPIOINT and the interrupts of the built-in peripheral
>>> +  interrupts output by each IP. And it notifies the interrupt to the GIC
>>> +    - IRQ sense select for 8 external interrupts, mapped to 8 GIC SPI interrupts
>>> +    - GPIO pins used as external interrupt input pins, mapped to 32 GIC SPI interrupts
>>> +    - NMI edge select (NMI is not treated as NMI exception and supports fall edge and
>>> +      stand-up edge detection interrupts)
>>> +
>>> +allOf:
>>> +  - $ref: /schemas/interrupt-controller.yaml#
>>> +
>>> +properties:
>>> +  compatible:
>>> +    items:
>>> +      - enum:
>>> +          - renesas,r9a07g044-irqc    # RZ/G2L
>>> +      - const: renesas,rzg2l-irqc
>>> +
>>> +  '#interrupt-cells':
>>> +    const: 2
>>> +
>>> +  '#address-cells':
>>> +    const: 0
>>> +
>>> +  interrupt-controller: true
>>> +
>>> +  reg:
>>> +    maxItems: 1> +
>>> +  interrupts:
>>> +    maxItems: 41
>>> +
>>> +  clocks:
>>> +    maxItems: 2
>>> +
>>> +  clock-names:
>>> +    items:
>>> +      - const: clk
>>> +      - const: pclk
>>> +
>>> +  power-domains:
>>> +    maxItems: 1
>>> +
>>> +  resets:
>>> +    maxItems: 1
>>> +
>>> +required:
>>> +  - compatible
>>> +  - '#interrupt-cells'
>>> +  - '#address-cells'
>>> +  - interrupt-controller
>>> +  - reg
>>> +  - interrupts
>>> +  - clocks
>>> +  - clock-names
>>> +  - power-domains
>>> +  - resets
>>> +
>>> +additionalProperties: false
>>
>> This should be rather unevaluatedProperties and remove
>> interrupt-controller:true from properties.
>>
> Ok will do.

After some tests it seems interrupt-controller:true is required in
properties, so only change unevaluatedProperties.


Best regards,
Krzysztof