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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
* Marvell EBU PCIe interfaces
Mandatory properties:
- compatible: one of the following values:
marvell,armada-370-pcie
marvell,armada-xp-pcie
marvell,kirkwood-pcie
- #address-cells, set to <3>
- #size-cells, set to <2>
- #interrupt-cells, set to <1>
- bus-range: PCI bus numbers covered
- device_type, set to "pci"
- ranges: ranges for the PCI memory and I/O regions, as well as the
MMIO registers to control the PCIe interfaces.
In addition, the Device Tree node must have sub-nodes describing each
PCIe interface, having the following mandatory properties:
- reg: used only for interrupt mapping, so only the first four bytes
are used to refer to the correct bus number and device number.
- assigned-addresses: reference to the MMIO registers used to control
this PCIe interface.
- clocks: the clock associated to this PCIe interface
- marvell,pcie-port: the physical PCIe port number
- status: either "disabled" or "okay"
- device_type, set to "pci"
- #address-cells, set to <3>
- #size-cells, set to <2>
- #interrupt-cells, set to <1>
- ranges, empty property.
- interrupt-map-mask and interrupt-map, standard PCI properties to
define the mapping of the PCIe interface to interrupt numbers.
and the following optional properties:
- marvell,pcie-lane: the physical PCIe lane number, for ports having
multiple lanes. If this property is not found, we assume that the
value is 0.
Example:
pcie-controller {
compatible = "marvell,armada-xp-pcie";
status = "disabled";
device_type = "pci";
#address-cells = <3>;
#size-cells = <2>;
bus-range = <0x00 0xff>;
ranges = <0x82000000 0 0xd0040000 0xd0040000 0 0x00002000 /* Port 0.0 registers */
0x82000000 0 0xd0042000 0xd0042000 0 0x00002000 /* Port 2.0 registers */
0x82000000 0 0xd0044000 0xd0044000 0 0x00002000 /* Port 0.1 registers */
0x82000000 0 0xd0048000 0xd0048000 0 0x00002000 /* Port 0.2 registers */
0x82000000 0 0xd004c000 0xd004c000 0 0x00002000 /* Port 0.3 registers */
0x82000000 0 0xd0080000 0xd0080000 0 0x00002000 /* Port 1.0 registers */
0x82000000 0 0xd0082000 0xd0082000 0 0x00002000 /* Port 3.0 registers */
0x82000000 0 0xd0084000 0xd0084000 0 0x00002000 /* Port 1.1 registers */
0x82000000 0 0xd0088000 0xd0088000 0 0x00002000 /* Port 1.2 registers */
0x82000000 0 0xd008c000 0xd008c000 0 0x00002000 /* Port 1.3 registers */
0x82000000 0 0xe0000000 0xe0000000 0 0x08000000 /* non-prefetchable memory */
0x81000000 0 0 0xe8000000 0 0x00100000>; /* downstream I/O */
pcie@1,0 {
device_type = "pci";
assigned-addresses = <0x82000800 0 0xd0040000 0 0x2000>;
reg = <0x0800 0 0 0 0>;
#address-cells = <3>;
#size-cells = <2>;
#interrupt-cells = <1>;
ranges;
interrupt-map-mask = <0 0 0 0>;
interrupt-map = <0 0 0 0 &mpic 58>;
marvell,pcie-port = <0>;
marvell,pcie-lane = <0>;
clocks = <&gateclk 5>;
status = "disabled";
};
pcie@2,0 {
device_type = "pci";
assigned-addresses = <0x82001000 0 0xd0044000 0 0x2000>;
reg = <0x1000 0 0 0 0>;
#address-cells = <3>;
#size-cells = <2>;
#interrupt-cells = <1>;
ranges;
interrupt-map-mask = <0 0 0 0>;
interrupt-map = <0 0 0 0 &mpic 59>;
marvell,pcie-port = <0>;
marvell,pcie-lane = <1>;
clocks = <&gateclk 6>;
status = "disabled";
};
pcie@3,0 {
device_type = "pci";
assigned-addresses = <0x82001800 0 0xd0048000 0 0x2000>;
reg = <0x1800 0 0 0 0>;
#address-cells = <3>;
#size-cells = <2>;
#interrupt-cells = <1>;
ranges;
interrupt-map-mask = <0 0 0 0>;
interrupt-map = <0 0 0 0 &mpic 60>;
marvell,pcie-port = <0>;
marvell,pcie-lane = <2>;
clocks = <&gateclk 7>;
status = "disabled";
};
pcie@4,0 {
device_type = "pci";
assigned-addresses = <0x82002000 0 0xd004c000 0 0x2000>;
reg = <0x2000 0 0 0 0>;
#address-cells = <3>;
#size-cells = <2>;
#interrupt-cells = <1>;
ranges;
interrupt-map-mask = <0 0 0 0>;
interrupt-map = <0 0 0 0 &mpic 61>;
marvell,pcie-port = <0>;
marvell,pcie-lane = <3>;
clocks = <&gateclk 8>;
status = "disabled";
};
pcie@5,0 {
device_type = "pci";
assigned-addresses = <0x82002800 0 0xd0080000 0 0x2000>;
reg = <0x2800 0 0 0 0>;
#address-cells = <3>;
#size-cells = <2>;
#interrupt-cells = <1>;
ranges;
interrupt-map-mask = <0 0 0 0>;
interrupt-map = <0 0 0 0 &mpic 62>;
marvell,pcie-port = <1>;
marvell,pcie-lane = <0>;
clocks = <&gateclk 9>;
status = "disabled";
};
pcie@6,0 {
device_type = "pci";
assigned-addresses = <0x82003000 0 0xd0084000 0 0x2000>;
reg = <0x3000 0 0 0 0>;
#address-cells = <3>;
#size-cells = <2>;
#interrupt-cells = <1>;
ranges;
interrupt-map-mask = <0 0 0 0>;
interrupt-map = <0 0 0 0 &mpic 63>;
marvell,pcie-port = <1>;
marvell,pcie-lane = <1>;
clocks = <&gateclk 10>;
status = "disabled";
};
pcie@7,0 {
device_type = "pci";
assigned-addresses = <0x82003800 0 0xd0088000 0 0x2000>;
reg = <0x3800 0 0 0 0>;
#address-cells = <3>;
#size-cells = <2>;
#interrupt-cells = <1>;
ranges;
interrupt-map-mask = <0 0 0 0>;
interrupt-map = <0 0 0 0 &mpic 64>;
marvell,pcie-port = <1>;
marvell,pcie-lane = <2>;
clocks = <&gateclk 11>;
status = "disabled";
};
pcie@8,0 {
device_type = "pci";
assigned-addresses = <0x82004000 0 0xd008c000 0 0x2000>;
reg = <0x4000 0 0 0 0>;
#address-cells = <3>;
#size-cells = <2>;
#interrupt-cells = <1>;
ranges;
interrupt-map-mask = <0 0 0 0>;
interrupt-map = <0 0 0 0 &mpic 65>;
marvell,pcie-port = <1>;
marvell,pcie-lane = <3>;
clocks = <&gateclk 12>;
status = "disabled";
};
pcie@9,0 {
device_type = "pci";
assigned-addresses = <0x82004800 0 0xd0042000 0 0x2000>;
reg = <0x4800 0 0 0 0>;
#address-cells = <3>;
#size-cells = <2>;
#interrupt-cells = <1>;
ranges;
interrupt-map-mask = <0 0 0 0>;
interrupt-map = <0 0 0 0 &mpic 99>;
marvell,pcie-port = <2>;
marvell,pcie-lane = <0>;
clocks = <&gateclk 26>;
status = "disabled";
};
pcie@10,0 {
device_type = "pci";
assigned-addresses = <0x82005000 0 0xd0082000 0 0x2000>;
reg = <0x5000 0 0 0 0>;
#address-cells = <3>;
#size-cells = <2>;
#interrupt-cells = <1>;
ranges;
interrupt-map-mask = <0 0 0 0>;
interrupt-map = <0 0 0 0 &mpic 103>;
marvell,pcie-port = <3>;
marvell,pcie-lane = <0>;
clocks = <&gateclk 27>;
status = "disabled";
};
};
|
