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-rw-r--r--Documentation/devicetree/bindings/usb/am33xx-usb.txt222
1 files changed, 192 insertions, 30 deletions
diff --git a/Documentation/devicetree/bindings/usb/am33xx-usb.txt b/Documentation/devicetree/bindings/usb/am33xx-usb.txt
index dc9dc8c87f15..20c2ff2ba07e 100644
--- a/Documentation/devicetree/bindings/usb/am33xx-usb.txt
+++ b/Documentation/devicetree/bindings/usb/am33xx-usb.txt
@@ -1,35 +1,197 @@
1AM33XX MUSB GLUE 1 AM33xx MUSB
2 - compatible : Should be "ti,musb-am33xx" 2~~~~~~~~~~~~~~~
3 - reg : offset and length of register sets, first usbss, then for musb instances 3- compatible: ti,am33xx-usb
4 - interrupts : usbss, musb instance interrupts in order 4- reg: offset and length of the usbss register sets
5 - ti,hwmods : must be "usb_otg_hs" 5- ti,hwmods : must be "usb_otg_hs"
6 - multipoint : Should be "1" indicating the musb controller supports 6
7 multipoint. This is a MUSB configuration-specific setting. 7The glue layer contains multiple child nodes. It is required the have
8 - num-eps : Specifies the number of endpoints. This is also a 8at least a control module node, USB node and a PHY node. The second USB
9 MUSB configuration-specific setting. Should be set to "16" 9node and its PHY node is optional. The DMA node is also optional.
10 - ram-bits : Specifies the ram address size. Should be set to "12" 10
11 - port0-mode : Should be "3" to represent OTG. "1" signifies HOST and "2" 11Reset module
12 represents PERIPHERAL. 12~~~~~~~~~~~~
13 - port1-mode : Should be "1" to represent HOST. "3" signifies OTG and "2" 13- compatible: ti,am335x-usb-ctrl-module
14 represents PERIPHERAL. 14- reg: offset and length of the "USB control registers" in the "Control
15 - power : Should be "250". This signifies the controller can supply up to 15 Module" block. A second offset and length for the USB wake up control
16 500mA when operating in host mode. 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.
17 66
18Example: 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};
19 77
20usb@47400000 { 78usb: usb@47400000 {
21 compatible = "ti,musb-am33xx"; 79 compatible = "ti,am33xx-usb";
22 reg = <0x47400000 0x1000 /* usbss */ 80 reg = <0x47400000 0x1000>;
23 0x47401000 0x800 /* musb instance 0 */ 81 ranges;
24 0x47401800 0x800>; /* musb instance 1 */ 82 #address-cells = <1>;
25 interrupts = <17 /* usbss */ 83 #size-cells = <1>;
26 18 /* musb instance 0 */
27 19>; /* musb instance 1 */
28 multipoint = <1>;
29 num-eps = <16>;
30 ram-bits = <12>;
31 port0-mode = <3>;
32 port1-mode = <3>;
33 power = <250>;
34 ti,hwmods = "usb_otg_hs"; 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 };
99
100 usb0: usb@47401000 {
101 compatible = "ti,musb-am33xx";
102 reg = <0x47401400 0x400
103 0x47401000 0x200>;
104 reg-names = "mc", "control";
105
106 interrupts = <18>;
107 interrupt-names = "mc";
108 dr_mode = "otg"
109 mentor,multipoint = <1>;
110 mentor,num-eps = <16>;
111 mentor,ram-bits = <12>;
112 mentor,power = <500>;
113 phys = <&usb0_phy>;
114
115 dmas = <&cppi41dma 0 0 &cppi41dma 1 0
116 &cppi41dma 2 0 &cppi41dma 3 0
117 &cppi41dma 4 0 &cppi41dma 5 0
118 &cppi41dma 6 0 &cppi41dma 7 0
119 &cppi41dma 8 0 &cppi41dma 9 0
120 &cppi41dma 10 0 &cppi41dma 11 0
121 &cppi41dma 12 0 &cppi41dma 13 0
122 &cppi41dma 14 0 &cppi41dma 0 1
123 &cppi41dma 1 1 &cppi41dma 2 1
124 &cppi41dma 3 1 &cppi41dma 4 1
125 &cppi41dma 5 1 &cppi41dma 6 1
126 &cppi41dma 7 1 &cppi41dma 8 1
127 &cppi41dma 9 1 &cppi41dma 10 1
128 &cppi41dma 11 1 &cppi41dma 12 1
129 &cppi41dma 13 1 &cppi41dma 14 1>;
130 dma-names =
131 "rx1", "rx2", "rx3", "rx4", "rx5", "rx6", "rx7",
132 "rx8", "rx9", "rx10", "rx11", "rx12", "rx13",
133 "rx14", "rx15",
134 "tx1", "tx2", "tx3", "tx4", "tx5", "tx6", "tx7",
135 "tx8", "tx9", "tx10", "tx11", "tx12", "tx13",
136 "tx14", "tx15";
137 };
138
139 usb1_phy: usb-phy@47401b00 {
140 compatible = "ti,am335x-usb-phy";
141 reg = <0x47401b00 0x100>;
142 reg-names = "phy";
143 ti,ctrl_mod = <&ctrl_mod>;
144 };
145
146 usb1: usb@47401800 {
147 compatible = "ti,musb-am33xx";
148 reg = <0x47401c00 0x400
149 0x47401800 0x200>;
150 reg-names = "mc", "control";
151 interrupts = <19>;
152 interrupt-names = "mc";
153 dr_mode = "host"
154 mentor,multipoint = <1>;
155 mentor,num-eps = <16>;
156 mentor,ram-bits = <12>;
157 mentor,power = <500>;
158 phys = <&usb1_phy>;
159
160 dmas = <&cppi41dma 15 0 &cppi41dma 16 0
161 &cppi41dma 17 0 &cppi41dma 18 0
162 &cppi41dma 19 0 &cppi41dma 20 0
163 &cppi41dma 21 0 &cppi41dma 22 0
164 &cppi41dma 23 0 &cppi41dma 24 0
165 &cppi41dma 25 0 &cppi41dma 26 0
166 &cppi41dma 27 0 &cppi41dma 28 0
167 &cppi41dma 29 0 &cppi41dma 15 1
168 &cppi41dma 16 1 &cppi41dma 17 1
169 &cppi41dma 18 1 &cppi41dma 19 1
170 &cppi41dma 20 1 &cppi41dma 21 1
171 &cppi41dma 22 1 &cppi41dma 23 1
172 &cppi41dma 24 1 &cppi41dma 25 1
173 &cppi41dma 26 1 &cppi41dma 27 1
174 &cppi41dma 28 1 &cppi41dma 29 1>;
175 dma-names =
176 "rx1", "rx2", "rx3", "rx4", "rx5", "rx6", "rx7",
177 "rx8", "rx9", "rx10", "rx11", "rx12", "rx13",
178 "rx14", "rx15",
179 "tx1", "tx2", "tx3", "tx4", "tx5", "tx6", "tx7",
180 "tx8", "tx9", "tx10", "tx11", "tx12", "tx13",
181 "tx14", "tx15";
182 };
183
184 cppi41dma: dma-controller@07402000 {
185 compatible = "ti,am3359-cppi41";
186 reg = <0x47400000 0x1000
187 0x47402000 0x1000
188 0x47403000 0x1000
189 0x47404000 0x4000>;
190 reg-names = "glue", "controller", "scheduler", "queuemgr";
191 interrupts = <17>;
192 interrupt-names = "glue";
193 #dma-cells = <2>;
194 #dma-channels = <30>;
195 #dma-requests = <256>;
196 };
35}; 197};
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-25 01:28:34 -0500