linux-kernel - Re: [PATCH v7 2/7] media: dt-binding: nuvoton: Add bindings for NPCM VCD and ECE engine

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Message-ID: <20221123000552.GA817752-robh@kernel.org>
Date:   Tue, 22 Nov 2022 18:05:52 -0600
From:   Rob Herring <robh@...nel.org>
To:     Marvin Lin <milkfafa@...il.com>
Cc:     mchehab@...nel.org, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        openbmc@...ts.ozlabs.org, avifishman70@...il.com,
        tmaimon77@...il.com, tali.perry1@...il.com, kwliu@...oton.com,
        kflin@...oton.com
Subject: Re: [PATCH v7 2/7] media: dt-binding: nuvoton: Add bindings for NPCM
 VCD and ECE engine

On Tue, Nov 22, 2022 at 04:57:19PM +0800, Marvin Lin wrote:
> Add dt-binding document for Video Capture/Differentiation Engine (VCD)
> and Encoding Compression Engine (ECE) present on Nuvoton NPCM SoCs.
> 
> Signed-off-by: Marvin Lin <milkfafa@...il.com>
> ---
>  .../bindings/media/nuvoton,npcm-video.yaml    | 87 +++++++++++++++++++
>  1 file changed, 87 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/nuvoton,npcm-video.yaml
> 
> diff --git a/Documentation/devicetree/bindings/media/nuvoton,npcm-video.yaml b/Documentation/devicetree/bindings/media/nuvoton,npcm-video.yaml
> new file mode 100644
> index 000000000000..b5be7ef09038
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/nuvoton,npcm-video.yaml
> @@ -0,0 +1,87 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/nuvoton,npcm-video.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Nuvoton NPCM Video Capture/Encode Engine Device Tree Bindings

Drop ' Device Tree Bindings'

> +
> +maintainers:
> +  - Joseph Liu <kwliu@...oton.com>
> +  - Marvin Lin <kflin@...oton.com>
> +
> +description: |
> +  Video Capture/Differentiation Engine (VCD) and Encoding Compression Engine
> +  (ECE) present on Nuvoton NPCM SoCs.

Sounds like 2 h/w blocks? If so, then it should be 2 separate nodes.

> +
> +properties:
> +  compatible:
> +    enum:
> +      - nuvoton,npcm750-video
> +      - nuvoton,npcm845-video

'video' doesn't sound like the name of the h/w block(s).

> +
> +  reg:
> +    items:
> +      - description: VCD registers
> +      - description: ECE registers
> +
> +  reg-names:
> +    items:
> +      - const: vcd
> +      - const: ece
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  resets:
> +    items:
> +      - description: VCD reset control
> +      - description: ECE reset control
> +
> +  reset-names:
> +    items:
> +      - const: vcd
> +      - const: ece
> +
> +  nuvoton,syscon-gcr:
> +    $ref: /schemas/types.yaml#definitions/phandle
> +    description: Phandle to the Global Control Register DT node
> +
> +  nuvoton,syscon-gfxi:
> +    $ref: /schemas/types.yaml#definitions/phandle
> +    description: Phandle to the Graphics Core Information DT node
> +
> +  memory-region:
> +    description:
> +      CMA pool to use for buffers allocation instead of the default CMA pool.
> +
> +required:
> +  - compatible
> +  - reg
> +  - reg-names
> +  - interrupts
> +  - resets
> +  - reset-names
> +  - nuvoton,syscon-gcr
> +  - nuvoton,syscon-gfxi
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/reset/nuvoton,npcm7xx-reset.h>
> +
> +    video: video@...10000 {
> +        compatible = "nuvoton,npcm750-video";
> +        reg = <0xf0810000 0x10000>,
> +              <0xf0820000 0x2000>;
> +        reg-names = "vcd", "ece";
> +        interrupts = <GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>;
> +        resets = <&rstc NPCM7XX_RESET_IPSRST2 NPCM7XX_RESET_VCD>,
> +                 <&rstc NPCM7XX_RESET_IPSRST2 NPCM7XX_RESET_ECE>;
> +        reset-names = "vcd", "ece";
> +        nuvoton,syscon-gcr = <&gcr>;
> +        nuvoton,syscon-gfxi = <&gfxi>;
> +    };
> -- 
> 2.34.1
> 
>