linux-kernel - Re: [RFC PATCH v2 02/31] Documentation: Add binding for kalray,kv3-1-core-intc

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Date:   Sun, 22 Jan 2023 12:44:46 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Yann Sionneau <ysionneau@...ray.eu>, Arnd Bergmann <arnd@...db.de>,
        Jonathan Corbet <corbet@....net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Will Deacon <will@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Boqun Feng <boqun.feng@...il.com>,
        Mark Rutland <mark.rutland@....com>,
        Eric Biederman <ebiederm@...ssion.com>,
        Kees Cook <keescook@...omium.org>,
        Oleg Nesterov <oleg@...hat.com>,
        Ingo Molnar <mingo@...hat.com>,
        Waiman Long <longman@...hat.com>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Nick Piggin <npiggin@...il.com>,
        Paul Moore <paul@...l-moore.com>,
        Eric Paris <eparis@...hat.com>,
        Christian Brauner <brauner@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Jules Maselbas <jmaselbas@...ray.eu>,
        Guillaume Thouvenin <gthouvenin@...ray.eu>,
        Clement Leger <clement@...ment-leger.fr>,
        Vincent Chardon <vincent.chardon@...ys-design.com>,
        Marc Poulhiès <dkm@...aplop.net>,
        Julian Vetter <jvetter@...ray.eu>,
        Samuel Jones <sjones@...ray.eu>,
        Ashley Lesdalons <alesdalons@...ray.eu>,
        Thomas Costis <tcostis@...ray.eu>,
        Marius Gligor <mgligor@...ray.eu>,
        Jonathan Borne <jborne@...ray.eu>,
        Julien Villette <jvillette@...ray.eu>,
        Luc Michel <lmichel@...ray.eu>,
        Louis Morhet <lmorhet@...ray.eu>,
        Julien Hascoet <jhascoet@...ray.eu>,
        Jean-Christophe Pince <jcpince@...il.com>,
        Guillaume Missonnier <gmissonnier@...ray.eu>,
        Alex Michon <amichon@...ray.eu>,
        Huacai Chen <chenhuacai@...nel.org>,
        WANG Xuerui <git@...0n.name>,
        Shaokun Zhang <zhangshaokun@...ilicon.com>,
        John Garry <john.garry@...wei.com>,
        Guangbin Huang <huangguangbin2@...wei.com>,
        Bharat Bhushan <bbhushan2@...vell.com>,
        Bibo Mao <maobibo@...ngson.cn>,
        Atish Patra <atishp@...shpatra.org>,
        "Jason A. Donenfeld" <Jason@...c4.com>,
        Qi Liu <liuqi115@...wei.com>,
        Jiaxun Yang <jiaxun.yang@...goat.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Mark Brown <broonie@...nel.org>,
        Janosch Frank <frankja@...ux.ibm.com>,
        Alexey Dobriyan <adobriyan@...il.com>
Cc:     Benjamin Mugnier <mugnier.benjamin@...il.com>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-mm@...ck.org,
        linux-arch@...r.kernel.org, linux-audit@...hat.com,
        linux-riscv@...ts.infradead.org, bpf@...r.kernel.org
Subject: Re: [RFC PATCH v2 02/31] Documentation: Add binding for
 kalray,kv3-1-core-intc

On 20/01/2023 15:09, Yann Sionneau wrote:
> From: Jules Maselbas <jmaselbas@...ray.eu>

Use subject prefixes matching the subsystem (which you can get for
example with `git log --oneline -- DIRECTORY_OR_FILE` on the directory
your patch is touching).


> 
> Add documentation for `kalray,kv3-1-core-intc` binding.
> 
> Co-developed-by: Jules Maselbas <jmaselbas@...ray.eu>
> Signed-off-by: Jules Maselbas <jmaselbas@...ray.eu>
> Signed-off-by: Yann Sionneau <ysionneau@...ray.eu>
> ---
> 
> Notes:
>     V1 -> V2: new patch
> 
>  .../kalray,kv3-1-core-intc.yaml               | 46 +++++++++++++++++++
>  1 file changed, 46 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/interrupt-controller/kalray,kv3-1-core-intc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/interrupt-controller/kalray,kv3-1-core-intc.yaml b/Documentation/devicetree/bindings/interrupt-controller/kalray,kv3-1-core-intc.yaml
> new file mode 100644
> index 000000000000..1e3d0593173a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/interrupt-controller/kalray,kv3-1-core-intc.yaml
> @@ -0,0 +1,46 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/interrupt-controller/kalray,kv3-1-core-intc#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Kalray kv3-1 Core Interrupt Controller
> +
> +description: |
> +  The Kalray Core Interrupt Controller is tightly integrated in each kv3 core
> +  present in the Coolidge SoC.
> +
> +  It provides the following features:
> +  - 32 independent interrupt sources
> +  - 2-bit configurable priority level
> +  - 2-bit configurable ownership level
> +
> +allOf:
> +  - $ref: /schemas/interrupt-controller.yaml#
> +
> +properties:
> +  compatible:
> +    const: kalray,kv3-1-core-intc

Blank line between each of these,

> +  "#interrupt-cells":
> +    const: 1
> +    description:
> +      The IRQ number.
> +  reg:
> +    maxItems: 0

??? No way... What's this?

> +  "kalray,intc-nr-irqs":

Drop quotes.

> +    description: Number of irqs handled by the controller.

Why this is variable per board? Why do you need it ?

> +
> +required:
> +  - compatible
> +  - "#interrupt-cells"
> +  - interrupt-controller

missing additionalProperties: false

This binding looks poor, like you started from something odd. Please
don't. Take the newest reviewed binding or better example-schema and use
it to build yours. This would solve several trivial mistakes and style
issues.

> +
> +examples:
> +  - |
> +    intc: interrupt-controller {

What's the IO address space?


Best regards,
Krzysztof