netdev - Re: [PATCH net-next v3 1/7] dt-bindings: net: airoha: npu: Add memory regions used for wlan offload

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Message-ID: <20250715035419.GA11704-robh@kernel.org>
Date: Mon, 14 Jul 2025 22:54:19 -0500
From: Rob Herring <robh@...nel.org>
To: Lorenzo Bianconi <lorenzo@...nel.org>
Cc: Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Simon Horman <horms@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org, netdev@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: Re: [PATCH net-next v3 1/7] dt-bindings: net: airoha: npu: Add
 memory regions used for wlan offload

On Mon, Jul 14, 2025 at 05:25:14PM +0200, Lorenzo Bianconi wrote:
> Document memory regions used by Airoha EN7581 NPU for wlan traffic
> offloading.
> 
> Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
> ---
>  .../devicetree/bindings/net/airoha,en7581-npu.yaml    | 19 +++++++++++++++----
>  1 file changed, 15 insertions(+), 4 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml b/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
> index 76dd97c3fb4004674dc30a54c039c1cc19afedb3..f99d60f75bb03931a1c4f35066c72c709e337fd2 100644
> --- a/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
> +++ b/Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
> @@ -41,9 +41,18 @@ properties:
>        - description: wlan irq line5
>  
>    memory-region:
> -    maxItems: 1
> -    description:
> -      Memory used to store NPU firmware binary.
> +    items:
> +      - description: NPU firmware binary region
> +      - description: NPU wlan offload RX buffers region
> +      - description: NPU wlan offload TX buffers region
> +      - description: NPU wlan offload TX packet identifiers region

1 entry was valid before, but not anymore? If so, justify it in the 
commit message.

> +
> +  memory-region-names:
> +    items:
> +      - const: firmware
> +      - const: pkt
> +      - const: tx-pkt
> +      - const: tx-bufid
>  
>  required:
>    - compatible
> @@ -79,6 +88,8 @@ examples:
>                       <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
>                       <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
>                       <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
> -        memory-region = <&npu_binary>;
> +        memory-region = <&npu_firmware>, <&npu_pkt>, <&npu_txpkt>,
> +                        <&npu_txbufid>;
> +        memory-region-names = "firmware", "pkt", "tx-pkt", "tx-bufid";
>        };
>      };
> 
> -- 
> 2.50.1
>