1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/soc/fsl/fsl,qman.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: QorIQ DPAA Queue Manager
8
9 maintainers:
10 - Frank Li <Frank.Li@nxp.com>
11
12 description:
13 The Queue Manager is part of the Data-Path Acceleration Architecture (DPAA). QMan
14 supports queuing and QoS scheduling of frames to CPUs, network interfaces and
15 DPAA logic modules, maintains packet ordering within flows. Besides providing
16 flow-level queuing, is also responsible for congestion management functions such
17 as RED/WRED, congestion notifications and tail discards. This binding covers the
18 CCSR space programming model
19
20 properties:
21 compatible:
22 oneOf:
23 - const: fsl,qman
24 - items:
25 - enum:
26 - fsl,ls1043a-qman
27 - fsl,ls1046a-qman
28 - const: fsl,qman
29 reg:
30 items:
31 - description: |
32 Registers region within the CCSR address space
33
34 The QMan revision information is located in the QMAN_IP_REV_1/2
35 registers which are located at offsets 0xbf8 and 0xbfc
36
37 interrupts:
38 items:
39 - description: The error interrupt
40
41 fsl,qman-portals:
42 $ref: /schemas/types.yaml#/definitions/phandle
43 description: ref fsl,qman-port.yaml
44
45 fsl,liodn:
46 $ref: /schemas/types.yaml#/definitions/uint32-array
47 description:
48 See pamu.txt, PAMU property used for static LIODN assignment
49
50 fsl,iommu-parent:
51 $ref: /schemas/types.yaml#/definitions/phandle
52 description:
53 See pamu.txt, PAMU property used for dynamic LIODN assignment
54
55 clocks:
56 maxItems: 1
57 description:
58 Reference input clock. Its frequency is half of the platform clock
59
60 memory-region:
61 maxItems: 2
62 description:
63 List of phandles referencing the QMan private memory nodes (described
64 below). The qman-fqd node must be first followed by qman-pfdr node.
65 Only used on ARM Devices connected to a QMan instance via Direct Connect
66 Portals (DCP) must link to the respective QMan instance.
67
68 fsl,qman:
69 $ref: /schemas/types.yaml#/definitions/uint32-array
70 description:
71 List of phandle and DCP index pairs, to the QMan instance
72 to which this device is connected via the DCP
73
74 required:
75 - compatible
76 - reg
77 - interrupts
78
79 additionalProperties: false
80
81 examples:
82 - |
83 #include <dt-bindings/interrupt-controller/irq.h>
84
85 qman: qman@318000 {
86 compatible = "fsl,qman";
87 reg = <0x318000 0x1000>;
88 interrupts = <16 IRQ_TYPE_EDGE_FALLING 1 3>;
89 fsl,liodn = <0x16>;
90 fsl,qman-portals = <&qportals>;
91 memory-region = <&qman_fqd &qman_pfdr>;
92 clocks = <&platform_pll 1>;
93 };
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