xref: /linux/Documentation/devicetree/bindings/usb/amlogic,meson-g12a-usb-ctrl.yaml (revision 0526b56cbc3c489642bd6a5fe4b718dea7ef0ee8) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2# Copyright 2019 BayLibre, SAS
3%YAML 1.2
4---
5$id: http://devicetree.org/schemas/usb/amlogic,meson-g12a-usb-ctrl.yaml#
6$schema: http://devicetree.org/meta-schemas/core.yaml#
7
8title: Amlogic Meson G12A DWC3 USB SoC Controller Glue
9
10maintainers:
11  - Neil Armstrong <neil.armstrong@linaro.org>
12
13description: |
14  The Amlogic G12A embeds a DWC3 USB IP Core configured for USB2 and USB3
15  in host-only mode, and a DWC2 IP Core configured for USB2 peripheral mode
16  only.
17
18  A glue connects the DWC3 core to USB2 PHYs and optionally to an USB3 PHY.
19
20  One of the USB2 PHYs can be re-routed in peripheral mode to a DWC2 USB IP.
21
22  The DWC3 Glue controls the PHY routing and power, an interrupt line is
23  connected to the Glue to serve as OTG ID change detection.
24
25  The Amlogic A1 embeds a DWC3 USB IP Core configured for USB2 in
26  host-only mode.
27
28  The Amlogic GXL, GXM & AXG SoCs doesn't embed an USB3 PHY.
29
30properties:
31  compatible:
32    enum:
33      - amlogic,meson-gxl-usb-ctrl
34      - amlogic,meson-gxm-usb-ctrl
35      - amlogic,meson-axg-usb-ctrl
36      - amlogic,meson-g12a-usb-ctrl
37      - amlogic,meson-a1-usb-ctrl
38
39  ranges: true
40
41  "#address-cells":
42    enum: [ 1, 2 ]
43
44  "#size-cells":
45    enum: [ 1, 2 ]
46
47  clocks:
48    minItems: 1
49    maxItems: 3
50
51  clock-names:
52    minItems: 1
53    maxItems: 3
54
55  resets:
56    minItems: 1
57
58  reg:
59    maxItems: 1
60
61  interrupts:
62    maxItems: 1
63
64  phy-names:
65    minItems: 1
66    maxItems: 3
67
68  phys:
69    minItems: 1
70    maxItems: 3
71
72  dr_mode: true
73
74  power-domains:
75    maxItems: 1
76
77  vbus-supply:
78    description: VBUS power supply when used in OTG switchable mode
79
80patternProperties:
81  "^usb@[0-9a-f]+$":
82    oneOf:
83      - $ref: dwc2.yaml#
84      - $ref: snps,dwc3.yaml#
85
86additionalProperties: false
87
88required:
89  - compatible
90  - "#address-cells"
91  - "#size-cells"
92  - ranges
93  - clocks
94  - resets
95  - reg
96  - interrupts
97  - phy-names
98  - phys
99  - dr_mode
100
101allOf:
102  - if:
103      properties:
104        compatible:
105          enum:
106            - amlogic,meson-g12a-usb-ctrl
107
108    then:
109      properties:
110        phy-names:
111          minItems: 2
112          items:
113            - const: usb2-phy0 # USB2 PHY0 if USBHOST_A port is used
114            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
115            - const: usb3-phy0 # USB3 PHY if USB3_0 is used
116  - if:
117      properties:
118        compatible:
119          enum:
120            - amlogic,meson-gxl-usb-ctrl
121
122    then:
123      properties:
124        clocks:
125          minItems: 2
126        clock-names:
127          items:
128            - const: usb_ctrl
129            - const: ddr
130        phy-names:
131          items:
132            - const: usb2-phy0 # USB2 PHY0 if USBHOST_A port is used
133            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
134      required:
135        - clock-names
136  - if:
137      properties:
138        compatible:
139          enum:
140            - amlogic,meson-gxm-usb-ctrl
141
142    then:
143      properties:
144        clocks:
145          minItems: 2
146        clock-names:
147          items:
148            - const: usb_ctrl
149            - const: ddr
150        phy-names:
151          items:
152            - const: usb2-phy0 # USB2 PHY0 if USBHOST_A port is used
153            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
154            - const: usb2-phy2 # USB2 PHY2 if USBOTG_C port is used
155
156      required:
157        - clock-names
158  - if:
159      properties:
160        compatible:
161          enum:
162            - amlogic,meson-axg-usb-ctrl
163
164    then:
165      properties:
166        phy-names:
167          items:
168            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
169        clocks:
170          minItems: 2
171        clock-names:
172          items:
173            - const: usb_ctrl
174            - const: ddr
175      required:
176        - clock-names
177  - if:
178      properties:
179        compatible:
180          enum:
181            - amlogic,meson-a1-usb-ctrl
182
183    then:
184      properties:
185        phy-names:
186          items:
187            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
188        clocks:
189          minItems: 3
190        clock-names:
191          items:
192            - const: usb_ctrl
193            - const: usb_bus
194            - const: xtal_usb_ctrl
195      required:
196        - clock-names
197
198examples:
199  - |
200    usb: usb@ffe09000 {
201          compatible = "amlogic,meson-g12a-usb-ctrl";
202          reg = <0xffe09000 0xa0>;
203          interrupts = <16>;
204          #address-cells = <1>;
205          #size-cells = <1>;
206          ranges;
207
208          clocks = <&clkc_usb>;
209          resets = <&reset_usb>;
210
211          dr_mode = "otg";
212
213          phys = <&usb2_phy0>, <&usb2_phy1>, <&usb3_phy0>;
214          phy-names = "usb2-phy0", "usb2-phy1", "usb3-phy0";
215
216          dwc2: usb@ff400000 {
217              compatible = "amlogic,meson-g12a-usb", "snps,dwc2";
218              reg = <0xff400000 0x40000>;
219              interrupts = <31>;
220              clocks = <&clkc_usb1>;
221              clock-names = "otg";
222              phys = <&usb2_phy1>;
223              dr_mode = "peripheral";
224              g-rx-fifo-size = <192>;
225              g-np-tx-fifo-size = <128>;
226              g-tx-fifo-size = <128 128 16 16 16>;
227          };
228
229          dwc3: usb@ff500000 {
230              compatible = "snps,dwc3";
231              reg = <0xff500000 0x100000>;
232              interrupts = <30>;
233              dr_mode = "host";
234              snps,dis_u2_susphy_quirk;
235              snps,quirk-frame-length-adjustment = <0x20>;
236          };
237    };
238