1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 # Copyright 2019 Linaro Ltd.
5 $id: "http://devicetree.org/schemas/firmware/intel,ixp4xx-network-processing-engine.yaml#"
6 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
8 title: Intel IXP4xx Network Processing Engine
11 - Linus Walleij <linus.walleij@linaro.org>
14 On the IXP4xx SoCs, the Network Processing Engine (NPE) is a small
15 processor that can load a firmware to perform offloading of networking
16 and crypto tasks. It also manages the MDIO bus to the ethernet PHYs
17 on the IXP4xx platform. All IXP4xx platforms have three NPEs at
18 consecutive memory locations. They are all included in the same
19 device node since they are not independent of each other.
25 - const: intel,ixp4xx-network-processing-engine
29 - description: NPE0 (NPE-A) register range
30 - description: NPE1 (NPE-B) register range
31 - description: NPE2 (NPE-C) register range
34 $ref: /schemas/crypto/intel,ixp4xx-crypto.yaml#
36 description: Optional node for the embedded crypto engine, the node
37 should be named with the instance number of the NPE engine used for
44 additionalProperties: false
49 compatible = "intel,ixp4xx-network-processing-engine";
50 reg = <0xc8006000 0x1000>, <0xc8007000 0x1000>, <0xc8008000 0x1000>;
53 compatible = "intel,ixp4xx-crypto";
54 intel,npe-handle = <&npe 2>;
55 queue-rx = <&qmgr 30>;
56 queue-txready = <&qmgr 29>;