1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 # Copyright 2019 Linaro Ltd.
5 $id: "http://devicetree.org/schemas/misc/intel,ixp4xx-ahb-queue-manager.yaml#"
6 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
8 title: Intel IXP4xx AHB Queue Manager
11 - Linus Walleij <linus.walleij@linaro.org>
14 The IXP4xx AHB Queue Manager maintains queues as circular buffers in
15 an 8KB embedded SRAM along with hardware pointers. It is used by both
16 the XScale processor and the NPEs (Network Processing Units) in the
17 IXP4xx for accelerating queues, especially for networking. Clients pick
18 queues from the queue manager with foo-queue = <&qmgr N> where the
19 &qmgr is a phandle to the queue manager and N is the queue resource
20 number. The queue resources available and their specific purpose
21 on a certain IXP4xx system will vary.
26 - const: intel,ixp4xx-ahb-queue-manager
33 - description: Interrupt for queues 0-31
34 - description: Interrupt for queues 32-63
41 additionalProperties: false
45 #include <dt-bindings/interrupt-controller/irq.h>
47 qmgr: queue-manager@60000000 {
48 compatible = "intel,ixp4xx-ahb-queue-manager";
49 reg = <0x60000000 0x4000>;
50 interrupts = <3 IRQ_TYPE_LEVEL_HIGH>, <4 IRQ_TYPE_LEVEL_HIGH>;