tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/dma/fsl,elo3-dma.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Freescale Elo3 DMA Controller
8
9maintainers:
10 - J. Neuschäfer <j.ne@posteo.net>
11
12description:
13 DMA controller which has same function as EloPlus except that Elo3 has 8
14 channels while EloPlus has only 4, it is used in Freescale Txxx and Bxxx
15 series chips, such as t1040, t4240, b4860.
16
17properties:
18 compatible:
19 const: fsl,elo3-dma
20
21 reg:
22 items:
23 - description:
24 DMA General Status Registers starting from DGSR0, for channel 1~4
25 - description:
26 DMA General Status Registers starting from DGSR1, for channel 5~8
27
28 ranges: true
29
30 "#address-cells":
31 const: 1
32
33 "#size-cells":
34 const: 1
35
36 interrupts:
37 maxItems: 1
38
39patternProperties:
40 "^dma-channel@[0-9a-f]+$":
41 type: object
42 additionalProperties: false
43
44 properties:
45 compatible:
46 enum:
47 # native DMA channel
48 - fsl,eloplus-dma-channel
49
50 # audio DMA channel, see fsl,ssi.yaml
51 - fsl,ssi-dma-channel
52
53 reg:
54 maxItems: 1
55
56 interrupts:
57 maxItems: 1
58 description:
59 Per-channel interrupt. Only necessary if no controller interrupt has
60 been provided.
61
62additionalProperties: false
63
64examples:
65 - |
66 #include <dt-bindings/interrupt-controller/irq.h>
67
68 dma@100300 {
69 compatible = "fsl,elo3-dma";
70 reg = <0x100300 0x4>,
71 <0x100600 0x4>;
72 #address-cells = <1>;
73 #size-cells = <1>;
74 ranges = <0x0 0x100100 0x500>;
75
76 dma-channel@0 {
77 compatible = "fsl,eloplus-dma-channel";
78 reg = <0x0 0x80>;
79 interrupts = <28 IRQ_TYPE_EDGE_FALLING 0 0>;
80 };
81
82 dma-channel@80 {
83 compatible = "fsl,eloplus-dma-channel";
84 reg = <0x80 0x80>;
85 interrupts = <29 IRQ_TYPE_EDGE_FALLING 0 0>;
86 };
87
88 dma-channel@100 {
89 compatible = "fsl,eloplus-dma-channel";
90 reg = <0x100 0x80>;
91 interrupts = <30 IRQ_TYPE_EDGE_FALLING 0 0>;
92 };
93
94 dma-channel@180 {
95 compatible = "fsl,eloplus-dma-channel";
96 reg = <0x180 0x80>;
97 interrupts = <31 IRQ_TYPE_EDGE_FALLING 0 0>;
98 };
99
100 dma-channel@300 {
101 compatible = "fsl,eloplus-dma-channel";
102 reg = <0x300 0x80>;
103 interrupts = <76 IRQ_TYPE_EDGE_FALLING 0 0>;
104 };
105
106 dma-channel@380 {
107 compatible = "fsl,eloplus-dma-channel";
108 reg = <0x380 0x80>;
109 interrupts = <77 IRQ_TYPE_EDGE_FALLING 0 0>;
110 };
111
112 dma-channel@400 {
113 compatible = "fsl,eloplus-dma-channel";
114 reg = <0x400 0x80>;
115 interrupts = <78 IRQ_TYPE_EDGE_FALLING 0 0>;
116 };
117
118 dma-channel@480 {
119 compatible = "fsl,eloplus-dma-channel";
120 reg = <0x480 0x80>;
121 interrupts = <79 IRQ_TYPE_EDGE_FALLING 0 0>;
122 };
123 };
124
125...