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1 | |||
2 | Nintendo Wii device tree | ||
3 | ======================== | ||
4 | |||
5 | 0) The root node | ||
6 | |||
7 | This node represents the Nintendo Wii video game console. | ||
8 | |||
9 | Required properties: | ||
10 | |||
11 | - model : Should be "nintendo,wii" | ||
12 | - compatible : Should be "nintendo,wii" | ||
13 | |||
14 | 1) The "hollywood" node | ||
15 | |||
16 | This node represents the multi-function "Hollywood" chip, which packages | ||
17 | many of the devices found in the Nintendo Wii. | ||
18 | |||
19 | Required properties: | ||
20 | |||
21 | - compatible : Should be "nintendo,hollywood" | ||
22 | |||
23 | 1.a) The Video Interface (VI) node | ||
24 | |||
25 | Represents the interface between the graphics processor and a external | ||
26 | video encoder. | ||
27 | |||
28 | Required properties: | ||
29 | |||
30 | - compatible : should be "nintendo,hollywood-vi","nintendo,flipper-vi" | ||
31 | - reg : should contain the VI registers location and length | ||
32 | - interrupts : should contain the VI interrupt | ||
33 | |||
34 | 1.b) The Processor Interface (PI) node | ||
35 | |||
36 | Represents the data and control interface between the main processor | ||
37 | and graphics and audio processor. | ||
38 | |||
39 | Required properties: | ||
40 | |||
41 | - compatible : should be "nintendo,hollywood-pi","nintendo,flipper-pi" | ||
42 | - reg : should contain the PI registers location and length | ||
43 | |||
44 | 1.b.i) The "Flipper" interrupt controller node | ||
45 | |||
46 | Represents the "Flipper" interrupt controller within the "Hollywood" chip. | ||
47 | The node for the "Flipper" interrupt controller must be placed under | ||
48 | the PI node. | ||
49 | |||
50 | Required properties: | ||
51 | |||
52 | - #interrupt-cells : <1> | ||
53 | - compatible : should be "nintendo,flipper-pic" | ||
54 | - interrupt-controller | ||
55 | |||
56 | 1.c) The Digital Signal Procesor (DSP) node | ||
57 | |||
58 | Represents the digital signal processor interface, designed to offload | ||
59 | audio related tasks. | ||
60 | |||
61 | Required properties: | ||
62 | |||
63 | - compatible : should be "nintendo,hollywood-dsp","nintendo,flipper-dsp" | ||
64 | - reg : should contain the DSP registers location and length | ||
65 | - interrupts : should contain the DSP interrupt | ||
66 | |||
67 | 1.d) The Serial Interface (SI) node | ||
68 | |||
69 | Represents the interface to the four single bit serial interfaces. | ||
70 | The SI is a proprietary serial interface used normally to control gamepads. | ||
71 | It's NOT a RS232-type interface. | ||
72 | |||
73 | Required properties: | ||
74 | |||
75 | - compatible : should be "nintendo,hollywood-si","nintendo,flipper-si" | ||
76 | - reg : should contain the SI registers location and length | ||
77 | - interrupts : should contain the SI interrupt | ||
78 | |||
79 | 1.e) The Audio Interface (AI) node | ||
80 | |||
81 | Represents the interface to the external 16-bit stereo digital-to-analog | ||
82 | converter. | ||
83 | |||
84 | Required properties: | ||
85 | |||
86 | - compatible : should be "nintendo,hollywood-ai","nintendo,flipper-ai" | ||
87 | - reg : should contain the AI registers location and length | ||
88 | - interrupts : should contain the AI interrupt | ||
89 | |||
90 | 1.f) The External Interface (EXI) node | ||
91 | |||
92 | Represents the multi-channel SPI-like interface. | ||
93 | |||
94 | Required properties: | ||
95 | |||
96 | - compatible : should be "nintendo,hollywood-exi","nintendo,flipper-exi" | ||
97 | - reg : should contain the EXI registers location and length | ||
98 | - interrupts : should contain the EXI interrupt | ||
99 | |||
100 | 1.g) The Open Host Controller Interface (OHCI) nodes | ||
101 | |||
102 | Represent the USB 1.x Open Host Controller Interfaces. | ||
103 | |||
104 | Required properties: | ||
105 | |||
106 | - compatible : should be "nintendo,hollywood-usb-ohci","usb-ohci" | ||
107 | - reg : should contain the OHCI registers location and length | ||
108 | - interrupts : should contain the OHCI interrupt | ||
109 | |||
110 | 1.h) The Enhanced Host Controller Interface (EHCI) node | ||
111 | |||
112 | Represents the USB 2.0 Enhanced Host Controller Interface. | ||
113 | |||
114 | Required properties: | ||
115 | |||
116 | - compatible : should be "nintendo,hollywood-usb-ehci","usb-ehci" | ||
117 | - reg : should contain the EHCI registers location and length | ||
118 | - interrupts : should contain the EHCI interrupt | ||
119 | |||
120 | 1.i) The Secure Digital Host Controller Interface (SDHCI) nodes | ||
121 | |||
122 | Represent the Secure Digital Host Controller Interfaces. | ||
123 | |||
124 | Required properties: | ||
125 | |||
126 | - compatible : should be "nintendo,hollywood-sdhci","sdhci" | ||
127 | - reg : should contain the SDHCI registers location and length | ||
128 | - interrupts : should contain the SDHCI interrupt | ||
129 | |||
130 | 1.j) The Inter-Processsor Communication (IPC) node | ||
131 | |||
132 | Represent the Inter-Processor Communication interface. This interface | ||
133 | enables communications between the Broadway and the Starlet processors. | ||
134 | |||
135 | - compatible : should be "nintendo,hollywood-ipc" | ||
136 | - reg : should contain the IPC registers location and length | ||
137 | - interrupts : should contain the IPC interrupt | ||
138 | |||
139 | 1.k) The "Hollywood" interrupt controller node | ||
140 | |||
141 | Represents the "Hollywood" interrupt controller within the | ||
142 | "Hollywood" chip. | ||
143 | |||
144 | Required properties: | ||
145 | |||
146 | - #interrupt-cells : <1> | ||
147 | - compatible : should be "nintendo,hollywood-pic" | ||
148 | - reg : should contain the controller registers location and length | ||
149 | - interrupt-controller | ||
150 | - interrupts : should contain the cascade interrupt of the "flipper" pic | ||
151 | - interrupt-parent: should contain the phandle of the "flipper" pic | ||
152 | |||
153 | 1.l) The General Purpose I/O (GPIO) controller node | ||
154 | |||
155 | Represents the dual access 32 GPIO controller interface. | ||
156 | |||
157 | Required properties: | ||
158 | |||
159 | - #gpio-cells : <2> | ||
160 | - compatible : should be "nintendo,hollywood-gpio" | ||
161 | - reg : should contain the IPC registers location and length | ||
162 | - gpio-controller | ||
163 | |||
164 | 1.m) The control node | ||
165 | |||
166 | Represents the control interface used to setup several miscellaneous | ||
167 | settings of the "Hollywood" chip like boot memory mappings, resets, | ||
168 | disk interface mode, etc. | ||
169 | |||
170 | Required properties: | ||
171 | |||
172 | - compatible : should be "nintendo,hollywood-control" | ||
173 | - reg : should contain the control registers location and length | ||
174 | |||
175 | 1.n) The Disk Interface (DI) node | ||
176 | |||
177 | Represents the interface used to communicate with mass storage devices. | ||
178 | |||
179 | Required properties: | ||
180 | |||
181 | - compatible : should be "nintendo,hollywood-di" | ||
182 | - reg : should contain the DI registers location and length | ||
183 | - interrupts : should contain the DI interrupt | ||
184 | |||