1  AM33xx MUSB
2~~~~~~~~~~~~~~~
3- compatible: ti,am33xx-usb
4- reg: offset and length of the usbss register sets
5- ti,hwmods : must be "usb_otg_hs"
6
7The glue layer contains multiple child nodes. It is required to have
8at least a control module node, USB node and a PHY node. The second USB
9node and its PHY node are optional. The DMA node is also optional.
10
11Reset module
12~~~~~~~~~~~~
13- compatible: ti,am335x-usb-ctrl-module
14- reg: offset and length of the "USB control registers" in the "Control
15  Module" block. A second offset and length for the USB wake up control
16  in the same memory block.
17- reg-names: "phy_ctrl" for the "USB control registers" and "wakeup" for
18  the USB wake up control register.
19
20USB PHY
21~~~~~~~
22compatible: ti,am335x-usb-phy
23reg: offset and length of the "USB PHY" register space
24ti,ctrl_mod: reference to the "reset module" node
25reg-names: phy
26The PHY should have a "phy" alias numbered properly in the alias
27node.
28
29USB
30~~~
31- compatible: ti,musb-am33xx
32- reg: offset and length of "USB Controller Registers", and offset and
33  length of "USB Core" register space.
34- reg-names: control for the ""USB Controller Registers" and "mc" for
35  "USB Core" register space
36- interrupts: USB interrupt number
37- interrupt-names: mc
38- dr_mode: Should be one of "host", "peripheral" or "otg".
39- mentor,multipoint: Should be "1" indicating the musb controller supports
40  multipoint. This is a MUSB configuration-specific setting.
41- mentor,num-eps: Specifies the number of endpoints. This is also a
42  MUSB configuration-specific setting. Should be set to "16"
43- mentor,ram-bits: Specifies the ram address size. Should be set to "12"
44- mentor,power: Should be "500". This signifies the controller can supply up to
45  500mA when operating in host mode.
46- phys: reference to the USB phy
47- dmas: specifies the dma channels
48- dma-names: specifies the names of the channels. Use "rxN" for receive
49  and "txN" for transmit endpoints. N specifies the endpoint number.
50
51The controller should have an "usb" alias numbered properly in the alias
52node.
53
54DMA
55~~~
56- compatible: ti,am3359-cppi41
57- reg: offset and length of the following register spaces: USBSS, USB
58  CPPI DMA Controller, USB CPPI DMA Scheduler, USB Queue Manager
59- reg-names: glue, controller, scheduler, queuemgr
60- #dma-cells: should be set to 2. The first number represents the
61  endpoint number (0 … 14 for endpoints 1 … 15 on instance 0 and 15 … 29
62  for endpoints 1 … 15 on instance 1). The second number is 0 for RX and
63  1 for TX transfers.
64- #dma-channels: should be set to 30 representing the 15 endpoints for
65  each USB instance.
66
67Example:
68~~~~~~~~
69The following example contains all the nodes as used on am335x-evm:
70
71aliases {
72	usb0 = &usb0;
73	usb1 = &usb1;
74	phy0 = &usb0_phy;
75	phy1 = &usb1_phy;
76};
77
78usb: usb@47400000 {
79	compatible = "ti,am33xx-usb";
80	reg = <0x47400000 0x1000>;
81	ranges;
82	#address-cells = <1>;
83	#size-cells = <1>;
84	ti,hwmods = "usb_otg_hs";
85
86	ctrl_mod: control@44e10000 {
87		compatible = "ti,am335x-usb-ctrl-module";
88		reg = <0x44e10620 0x10
89			0x44e10648 0x4>;
90		reg-names = "phy_ctrl", "wakeup";
91	};
92
93	usb0_phy: usb-phy@47401300 {
94		compatible = "ti,am335x-usb-phy";
95		reg = <0x47401300 0x100>;
96		reg-names = "phy";
97		ti,ctrl_mod = <&ctrl_mod>;
98		#phy-cells = <0>;
99	};
100
101	usb0: usb@47401000 {
102		compatible = "ti,musb-am33xx";
103		reg = <0x47401400 0x400
104			0x47401000 0x200>;
105		reg-names = "mc", "control";
106
107		interrupts = <18>;
108		interrupt-names = "mc";
109		dr_mode = "otg"
110		mentor,multipoint = <1>;
111		mentor,num-eps = <16>;
112		mentor,ram-bits = <12>;
113		mentor,power = <500>;
114		phys = <&usb0_phy>;
115
116		dmas = <&cppi41dma  0 0 &cppi41dma  1 0
117			&cppi41dma  2 0 &cppi41dma  3 0
118			&cppi41dma  4 0 &cppi41dma  5 0
119			&cppi41dma  6 0 &cppi41dma  7 0
120			&cppi41dma  8 0 &cppi41dma  9 0
121			&cppi41dma 10 0 &cppi41dma 11 0
122			&cppi41dma 12 0 &cppi41dma 13 0
123			&cppi41dma 14 0 &cppi41dma  0 1
124			&cppi41dma  1 1 &cppi41dma  2 1
125			&cppi41dma  3 1 &cppi41dma  4 1
126			&cppi41dma  5 1 &cppi41dma  6 1
127			&cppi41dma  7 1 &cppi41dma  8 1
128			&cppi41dma  9 1 &cppi41dma 10 1
129			&cppi41dma 11 1 &cppi41dma 12 1
130			&cppi41dma 13 1 &cppi41dma 14 1>;
131		dma-names =
132			"rx1", "rx2", "rx3", "rx4", "rx5", "rx6", "rx7",
133			"rx8", "rx9", "rx10", "rx11", "rx12", "rx13",
134			"rx14", "rx15",
135			"tx1", "tx2", "tx3", "tx4", "tx5", "tx6", "tx7",
136			"tx8", "tx9", "tx10", "tx11", "tx12", "tx13",
137			"tx14", "tx15";
138	};
139
140	usb1_phy: usb-phy@47401b00 {
141		compatible = "ti,am335x-usb-phy";
142		reg = <0x47401b00 0x100>;
143		reg-names = "phy";
144		ti,ctrl_mod = <&ctrl_mod>;
145		#phy-cells = <0>;
146	};
147
148	usb1: usb@47401800 {
149		compatible = "ti,musb-am33xx";
150		reg = <0x47401c00 0x400
151			0x47401800 0x200>;
152		reg-names = "mc", "control";
153		interrupts = <19>;
154		interrupt-names = "mc";
155		dr_mode = "host"
156		mentor,multipoint = <1>;
157		mentor,num-eps = <16>;
158		mentor,ram-bits = <12>;
159		mentor,power = <500>;
160		phys = <&usb1_phy>;
161
162		dmas = <&cppi41dma 15 0 &cppi41dma 16 0
163			&cppi41dma 17 0 &cppi41dma 18 0
164			&cppi41dma 19 0 &cppi41dma 20 0
165			&cppi41dma 21 0 &cppi41dma 22 0
166			&cppi41dma 23 0 &cppi41dma 24 0
167			&cppi41dma 25 0 &cppi41dma 26 0
168			&cppi41dma 27 0 &cppi41dma 28 0
169			&cppi41dma 29 0 &cppi41dma 15 1
170			&cppi41dma 16 1 &cppi41dma 17 1
171			&cppi41dma 18 1 &cppi41dma 19 1
172			&cppi41dma 20 1 &cppi41dma 21 1
173			&cppi41dma 22 1 &cppi41dma 23 1
174			&cppi41dma 24 1 &cppi41dma 25 1
175			&cppi41dma 26 1 &cppi41dma 27 1
176			&cppi41dma 28 1 &cppi41dma 29 1>;
177		dma-names =
178			"rx1", "rx2", "rx3", "rx4", "rx5", "rx6", "rx7",
179			"rx8", "rx9", "rx10", "rx11", "rx12", "rx13",
180			"rx14", "rx15",
181			"tx1", "tx2", "tx3", "tx4", "tx5", "tx6", "tx7",
182			"tx8", "tx9", "tx10", "tx11", "tx12", "tx13",
183			"tx14", "tx15";
184	};
185
186	cppi41dma: dma-controller@7402000 {
187		compatible = "ti,am3359-cppi41";
188		reg =  <0x47400000 0x1000
189			0x47402000 0x1000
190			0x47403000 0x1000
191			0x47404000 0x4000>;
192		reg-names = "glue", "controller", "scheduler", "queuemgr";
193		interrupts = <17>;
194		interrupt-names = "glue";
195		#dma-cells = <2>;
196		#dma-channels = <30>;
197		#dma-requests = <256>;
198	};
199};
200