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Date: Wed, 5 Mar 2025 10:46:27 -0600
From: Rob Herring <robh@kernel.org>
To: Jjian Zhou <jjian.zhou@mediatek.com>
Cc: Jassi Brar <jassisinghbrar@gmail.com>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>,
	linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-mediatek@lists.infradead.org,
	Project_Global_Chrome_Upstream_Group@mediatek.com,
	Jason-ch Chen <jason-ch.chen@mediatek.com>
Subject: Re: [PATCH RFC 3/3] dt-bindings: mailbox: mtk,vcp-mbox: add mtk
 vcp-mbox document
Message-ID: <20250305164627.GA2117924-robh@kernel.org>
References: <20250305082047.15746-1-jjian.zhou@mediatek.com>
 <20250305082047.15746-4-jjian.zhou@mediatek.com>
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In-Reply-To: <20250305082047.15746-4-jjian.zhou@mediatek.com>

On Wed, Mar 05, 2025 at 04:20:40PM +0800, Jjian Zhou wrote:
> This patch adds document for mediatek vcp mbox.
> 
> Signed-off-by: Jjian Zhou <jjian.zhou@mediatek.com>
> ---
>  .../bindings/mailbox/mtk,vcp-mbox.yaml        | 49 +++++++++++++++++++
>  1 file changed, 49 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mailbox/mtk,vcp-mbox.yaml
> 
> diff --git a/Documentation/devicetree/bindings/mailbox/mtk,vcp-mbox.yaml b/Documentation/devicetree/bindings/mailbox/mtk,vcp-mbox.yaml
> new file mode 100644
> index 000000000000..d5afe295af14
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mailbox/mtk,vcp-mbox.yaml
> @@ -0,0 +1,49 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mailbox/mtk,vcp-mbox.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek Video Companion Processor (VCP) mailbox
> +
> +maintainers:
> +  - Jjian Zhou <Jjian.Zhou@mediatek.com>
> +
> +description: |

Don't need '|' if no formatting

> +  The MTK VCP mailbox enables the SoC to communicate with the VCP by passing
> +  messages through 64 32-bit wide registers. It has 32 interrupt vectors in
> +  either direction for signalling purposes.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - mediatek,mt8196-vcp-mbox
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  "#mbox-cells":
> +    const: 0
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - "#mbox-cells"
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +
> +    vcp_mailbox0: mailbox@31b80000 {
> +        compatible = "mediatek,mt8196-vcp-mbox";
> +        reg = <0x31b80000 0x1000>;
> +        interrupts = <GIC_SPI 789 IRQ_TYPE_LEVEL_HIGH 0>;
> +        #mbox-cells = <0>;
> +    };
> -- 
> 2.45.2
>