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

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Message-Id: <20250714-airoha-en7581-wlan-offlaod-v3-1-80abf6aae9e4@kernel.org>
Date: Mon, 14 Jul 2025 17:25:14 +0200
From: Lorenzo Bianconi <lorenzo@...nel.org>
To: 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>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Lorenzo Bianconi <lorenzo@...nel.org>
Cc: 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: [PATCH net-next v3 1/7] dt-bindings: net: airoha: npu: Add memory
 regions used for wlan offload

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
+
+  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