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dt-bindings: net: airoha: npu: Add memory regions used for wlan offload

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Document memory regions used by Airoha EN7581 NPU for wlan traffic
offloading. The brand new added memory regions do not introduce any
backward compatibility issues since they will be used just to offload
traffic to/from the MT76 wireless NIC and the MT76 probing will not fail
if these memory regions are not provide, it will just disable offloading
via the NPU module.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20250811-airoha-en7581-wlan-offlaod-v7-1-58823603bb4e@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Lorenzo Bianconi 2025-08-11 17:31:36 +02:00 committed by Jakub Kicinski
parent 7ceff083ee
commit cebd717d8f
1 changed files with 18 additions and 4 deletions
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22
Documentation/devicetree/bindings/net/airoha,en7581-npu.yaml
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@ -41,9 +41,21 @@ properties:
- description: wlan irq line5
memory-region:
maxItems: 1
description:
Memory used to store NPU firmware binary.
oneOf:
- items:
- description: NPU firmware binary region
- 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 +91,8 @@ 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";
};
};