linux-kernel - Re: [PATCH 1/3] dt-bindings: mailbox: mediatek: Add apu-mailbox document

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Message-ID: <c2ed4f4b-3f02-4de0-820c-04640cd2cfc4@collabora.com>
Date: Thu, 24 Oct 2024 13:08:52 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: "Karl.Li" <karl.li@...iatek.com>, Jassi Brar <jassisinghbrar@...il.com>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Matthias Brugger <matthias.bgg@...il.com>
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org,
 Chungying Lu <chungying.lu@...iatek.com>,
 Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH 1/3] dt-bindings: mailbox: mediatek: Add apu-mailbox
 document

Il 24/10/24 11:25, Karl.Li ha scritto:
> From: Karl Li <karl.li@...iatek.com>
> 
> Add apu-mailbox dt-binding document.
> 
> Signed-off-by: Karl Li <karl.li@...iatek.com>
> ---
>   .../mailbox/mediatek,apu-mailbox.yaml         | 55 +++++++++++++++++++
>   1 file changed, 55 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/mailbox/mediatek,apu-mailbox.yaml
> 
> diff --git a/Documentation/devicetree/bindings/mailbox/mediatek,apu-mailbox.yaml b/Documentation/devicetree/bindings/mailbox/mediatek,apu-mailbox.yaml
> new file mode 100644
> index 000000000000..cb4530799bef
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mailbox/mediatek,apu-mailbox.yaml
> @@ -0,0 +1,55 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mailbox/mediatek,apu-mailbox.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek APU mailbox
> +
> +maintainers:
> +  - Karl Li <Karl.Li@...iatek.com>
> +
> +description:
> +  The MediaTek APU-Mailbox facilitates communication with the
> +  APU microcontroller. Within the MediaTek APU subsystem, a
> +  message passing mechanism is built on top of the mailbox system.
> +  The mailbox only has limited space for each message. The firmware
> +  expects the message header from the mailbox, while the message body
> +  is passed through some fixed shared memory.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - mediatek,mt8188-apu-mailbox
> +      - mediatek,mt8196-apu-mailbox

In addition to Krzysztof's review......

oneOf:
   - const: mediatek,mt8188-apu-mailbox
   - items:
     - enum:
         - mediatek,mt8195-apu-mailbox
         - mediatek,mt8196-apu-mailbox
     - const: mediatek,mt8188-apu-mailbox

should be like that - I haven't checked if this gives any warnings, but anyway
you got the point, I think.

Regards,
Angelo