1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/dma/fsl-qdma.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: NXP Layerscape SoC qDMA Controller
maintainers:
- Frank Li <Frank.Li@nxp.com>
properties:
compatible:
enum:
- fsl,ls1021a-qdma
- fsl,ls1028a-qdma
- fsl,ls1043a-qdma
- fsl,ls1046a-qdma
reg:
items:
- description: Controller regs
- description: Status regs
- description: Block regs
interrupts:
minItems: 2
maxItems: 5
interrupt-names:
minItems: 2
items:
- const: qdma-error
- const: qdma-queue0
- const: qdma-queue1
- const: qdma-queue2
- const: qdma-queue3
dma-channels:
minimum: 1
maximum: 64
fsl,dma-queues:
$ref: /schemas/types.yaml#/definitions/uint32
description: Should contain number of queues supported.
minimum: 1
maximum: 4
block-number:
$ref: /schemas/types.yaml#/definitions/uint32
description: the virtual block number
block-offset:
$ref: /schemas/types.yaml#/definitions/uint32
description: the offset of different virtual block
status-sizes:
$ref: /schemas/types.yaml#/definitions/uint32
description: status queue size of per virtual block
queue-sizes:
$ref: /schemas/types.yaml#/definitions/uint32-array
description:
command queue size of per virtual block, the size number
based on queues
big-endian:
$ref: /schemas/types.yaml#/definitions/flag
description:
If present registers and hardware scatter/gather descriptors
of the qDMA are implemented in big endian mode, otherwise in little
mode.
required:
- compatible
- reg
- interrupts
- interrupt-names
- fsl,dma-queues
- block-number
- block-offset
- status-sizes
- queue-sizes
allOf:
- $ref: dma-controller.yaml#
- if:
properties:
compatible:
contains:
enum:
- fsl,ls1028a-qdma
- fsl,ls1043a-qdma
- fsl,ls1046a-qdma
then:
properties:
interrupts:
minItems: 5
interrupt-names:
minItems: 5
else:
properties:
interrupts:
maxItems: 3
interrupt-names:
maxItems: 3
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
dma-controller@8390000 {
compatible = "fsl,ls1021a-qdma";
reg = <0x8388000 0x1000>, /* Controller regs */
<0x8389000 0x1000>, /* Status regs */
<0x838a000 0x2000>; /* Block regs */
interrupts = <GIC_SPI 185 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "qdma-error", "qdma-queue0", "qdma-queue1";
#dma-cells = <1>;
dma-channels = <8>;
block-number = <2>;
block-offset = <0x1000>;
status-sizes = <64>;
queue-sizes = <64 64>;
big-endian;
fsl,dma-queues = <2>;
};
|
