summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/usb/amlogic,meson-g12a-usb-ctrl.yaml
blob: da757c1155d4b083a34deb173a0cc01d25eeeab2 (plain)
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
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
# Copyright 2019 BayLibre, SAS
%YAML 1.2
---
$id: http://devicetree.org/schemas/usb/amlogic,meson-g12a-usb-ctrl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Amlogic Meson G12A DWC3 USB SoC Controller Glue

maintainers:
  - Neil Armstrong <neil.armstrong@linaro.org>

description: |
  The Amlogic G12A embeds a DWC3 USB IP Core configured for USB2 and USB3
  in host-only mode, and a DWC2 IP Core configured for USB2 peripheral mode
  only.

  A glue connects the DWC3 core to USB2 PHYs and optionally to an USB3 PHY.

  One of the USB2 PHYs can be re-routed in peripheral mode to a DWC2 USB IP.

  The DWC3 Glue controls the PHY routing and power, an interrupt line is
  connected to the Glue to serve as OTG ID change detection.

  The Amlogic A1 embeds a DWC3 USB IP Core configured for USB2 in
  host-only mode.

  The Amlogic GXL, GXM & AXG SoCs doesn't embed an USB3 PHY.

properties:
  compatible:
    enum:
      - amlogic,meson-gxl-usb-ctrl
      - amlogic,meson-gxm-usb-ctrl
      - amlogic,meson-axg-usb-ctrl
      - amlogic,meson-g12a-usb-ctrl
      - amlogic,meson-a1-usb-ctrl

  ranges: true

  "#address-cells":
    enum: [ 1, 2 ]

  "#size-cells":
    enum: [ 1, 2 ]

  clocks:
    minItems: 1
    maxItems: 3

  clock-names:
    minItems: 1
    maxItems: 3

  resets:
    minItems: 1

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  phy-names:
    minItems: 1
    maxItems: 3

  phys:
    minItems: 1
    maxItems: 3

  dr_mode: true

  power-domains:
    maxItems: 1

  vbus-supply:
    description: VBUS power supply when used in OTG switchable mode

patternProperties:
  "^usb@[0-9a-f]+$":
    oneOf:
      - $ref: dwc2.yaml#
      - $ref: snps,dwc3.yaml#

additionalProperties: false

required:
  - compatible
  - "#address-cells"
  - "#size-cells"
  - ranges
  - clocks
  - resets
  - reg
  - interrupts
  - phy-names
  - phys
  - dr_mode

allOf:
  - if:
      properties:
        compatible:
          enum:
            - amlogic,meson-g12a-usb-ctrl

    then:
      properties:
        phy-names:
          minItems: 2
          items:
            - const: usb2-phy0 # USB2 PHY0 if USBHOST_A port is used
            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
            - const: usb3-phy0 # USB3 PHY if USB3_0 is used
  - if:
      properties:
        compatible:
          enum:
            - amlogic,meson-gxl-usb-ctrl

    then:
      properties:
        clocks:
          minItems: 2
        clock-names:
          items:
            - const: usb_ctrl
            - const: ddr
        phy-names:
          items:
            - const: usb2-phy0 # USB2 PHY0 if USBHOST_A port is used
            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
      required:
        - clock-names
  - if:
      properties:
        compatible:
          enum:
            - amlogic,meson-gxm-usb-ctrl

    then:
      properties:
        clocks:
          minItems: 2
        clock-names:
          items:
            - const: usb_ctrl
            - const: ddr
        phy-names:
          items:
            - const: usb2-phy0 # USB2 PHY0 if USBHOST_A port is used
            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
            - const: usb2-phy2 # USB2 PHY2 if USBOTG_C port is used

      required:
        - clock-names
  - if:
      properties:
        compatible:
          enum:
            - amlogic,meson-axg-usb-ctrl

    then:
      properties:
        phy-names:
          items:
            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
        clocks:
          minItems: 2
        clock-names:
          items:
            - const: usb_ctrl
            - const: ddr
      required:
        - clock-names
  - if:
      properties:
        compatible:
          enum:
            - amlogic,meson-a1-usb-ctrl

    then:
      properties:
        phy-names:
          items:
            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
        clocks:
          minItems: 3
        clock-names:
          items:
            - const: usb_ctrl
            - const: usb_bus
            - const: xtal_usb_ctrl
      required:
        - clock-names

examples:
  - |
    usb: usb@ffe09000 {
          compatible = "amlogic,meson-g12a-usb-ctrl";
          reg = <0xffe09000 0xa0>;
          interrupts = <16>;
          #address-cells = <1>;
          #size-cells = <1>;
          ranges;

          clocks = <&clkc_usb>;
          resets = <&reset_usb>;

          dr_mode = "otg";

          phys = <&usb2_phy0>, <&usb2_phy1>, <&usb3_phy0>;
          phy-names = "usb2-phy0", "usb2-phy1", "usb3-phy0";

          dwc2: usb@ff400000 {
              compatible = "amlogic,meson-g12a-usb", "snps,dwc2";
              reg = <0xff400000 0x40000>;
              interrupts = <31>;
              clocks = <&clkc_usb1>;
              clock-names = "otg";
              phys = <&usb2_phy1>;
              dr_mode = "peripheral";
              g-rx-fifo-size = <192>;
              g-np-tx-fifo-size = <128>;
              g-tx-fifo-size = <128 128 16 16 16>;
          };

          dwc3: usb@ff500000 {
              compatible = "snps,dwc3";
              reg = <0xff500000 0x100000>;
              interrupts = <30>;
              dr_mode = "host";
              snps,dis_u2_susphy_quirk;
              snps,quirk-frame-length-adjustment = <0x20>;
          };
    };