linux-kernel - Re: [PATCH 3/7] dt-bindings: media: Document STM32MP25 VENC video encoder

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Message-ID: <CAHCN7xKrriTPaRMJ-r86cSgFDUUP1At08imLBr_zEP0g3fga_g@mail.gmail.com>
Date:   Wed, 4 Oct 2023 18:41:09 -0500
From:   Adam Ford <aford173@...il.com>
To:     Hugues Fruchet <hugues.fruchet@...s.st.com>
Cc:     Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil@...all.nl>, linux-media@...r.kernel.org,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        linux-stm32@...md-mailman.stormreply.com,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-rockchip@...ts.infradead.org,
        Andrzej Pietrasiewicz <andrzej.p@...labora.com>
Subject: Re: [PATCH 3/7] dt-bindings: media: Document STM32MP25 VENC video encoder

On Wed, Oct 4, 2023 at 4:16 AM Hugues Fruchet
<hugues.fruchet@...s.st.com> wrote:
>
> Add STM32MP25 VENC video encoder bindings.
>
> Signed-off-by: Hugues Fruchet <hugues.fruchet@...s.st.com>
> ---
>  .../bindings/media/st,stm32mp25-venc.yaml     | 56 +++++++++++++++++++
>  1 file changed, 56 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/st,stm32mp25-venc.yaml
>
> diff --git a/Documentation/devicetree/bindings/media/st,stm32mp25-venc.yaml b/Documentation/devicetree/bindings/media/st,stm32mp25-venc.yaml
> new file mode 100644
> index 000000000000..c69e0a34f675
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/st,stm32mp25-venc.yaml
> @@ -0,0 +1,56 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/st,stm32mp25-venc.yaml#

Can this dt-binding be made more generic, like something like
hantro-h1 or VC8000NanoE?

I think there will be more boards that may incorporate the Hantro-H1
or a VC8000 in the future, because I don't think this IP is unique to
the STM32MP25.

adam

> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: STMicroelectronics STM32MP25 VENC video encoder
> +
> +maintainers:
> +  - Hugues Fruchet <hugues.fruchet@...s.st.com>
> +
> +description:
> +  The STMicroelectronics STM32MP25 SOCs embeds a VENC video hardware encoder
> +  peripheral based on Verisilicon VC8000NanoE IP (former Hantro H1).
> +
> +properties:
> +  compatible:
> +    const: st,stm32mp25-venc
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  interrupt-names:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  clock-names:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - interrupt-names
> +  - clocks
> +  - clock-names
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    venc: venc@...e0000 {
> +        compatible = "st,stm32mp25-venc";
> +        reg = <0x580e0000 0x800>;
> +        interrupts = <GIC_SPI 167 IRQ_TYPE_LEVEL_HIGH>;
> +        interrupt-names = "venc";


Is the interrupt-names needed if there is only one?

> +        clocks = <&ck_icn_p_venc>;
> +        clock-names = "venc-clk";

Same thing for the clock.  if there is only one clock, doe they need names?

adam
> +    };
> --
> 2.25.1
>