xref: /linux/Documentation/devicetree/bindings/usb/amlogic,meson-g12a-usb-ctrl.yaml (revision a4eb44a6435d6d8f9e642407a4a06f65eb90ca04) 
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 <narmstrong@baylibre.com>
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          items:
112            - const: usb2-phy0 # USB2 PHY0 if USBHOST_A port is used
113            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
114            - const: usb3-phy0 # USB3 PHY if USB3_0 is used
115  - if:
116      properties:
117        compatible:
118          enum:
119            - amlogic,meson-gxl-usb-ctrl
120
121    then:
122      properties:
123        clocks:
124          minItems: 2
125        clock-names:
126          items:
127            - const: usb_ctrl
128            - const: ddr
129        phy-names:
130          items:
131            - const: usb2-phy0 # USB2 PHY0 if USBHOST_A port is used
132            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
133      required:
134        - clock-names
135  - if:
136      properties:
137        compatible:
138          enum:
139            - amlogic,meson-gxm-usb-ctrl
140
141    then:
142      properties:
143        clocks:
144          minItems: 2
145        clock-names:
146          items:
147            - const: usb_ctrl
148            - const: ddr
149        phy-names:
150          items:
151            - const: usb2-phy0 # USB2 PHY0 if USBHOST_A port is used
152            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
153            - const: usb2-phy2 # USB2 PHY2 if USBOTG_C port is used
154
155      required:
156        - clock-names
157  - if:
158      properties:
159        compatible:
160          enum:
161            - amlogic,meson-axg-usb-ctrl
162
163    then:
164      properties:
165        phy-names:
166          items:
167            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
168        clocks:
169          minItems: 2
170        clock-names:
171          items:
172            - const: usb_ctrl
173            - const: ddr
174      required:
175        - clock-names
176  - if:
177      properties:
178        compatible:
179          enum:
180            - amlogic,meson-a1-usb-ctrl
181
182    then:
183      properties:
184        phy-names:
185          items:
186            - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
187        clocks:
188          minItems: 3
189        clock-names:
190          items:
191            - const: usb_ctrl
192            - const: usb_bus
193            - const: xtal_usb_ctrl
194      required:
195        - clock-names
196
197examples:
198  - |
199    usb: usb@ffe09000 {
200          compatible = "amlogic,meson-g12a-usb-ctrl";
201          reg = <0xffe09000 0xa0>;
202          interrupts = <16>;
203          #address-cells = <1>;
204          #size-cells = <1>;
205          ranges;
206
207          clocks = <&clkc_usb>;
208          resets = <&reset_usb>;
209
210          dr_mode = "otg";
211
212          phys = <&usb2_phy0>, <&usb2_phy1>, <&usb3_phy0>;
213          phy-names = "usb2-phy0", "usb2-phy1", "usb3-phy0";
214
215          dwc2: usb@ff400000 {
216              compatible = "amlogic,meson-g12a-usb", "snps,dwc2";
217              reg = <0xff400000 0x40000>;
218              interrupts = <31>;
219              clocks = <&clkc_usb1>;
220              clock-names = "otg";
221              phys = <&usb2_phy1>;
222              dr_mode = "peripheral";
223              g-rx-fifo-size = <192>;
224              g-np-tx-fifo-size = <128>;
225              g-tx-fifo-size = <128 128 16 16 16>;
226          };
227
228          dwc3: usb@ff500000 {
229              compatible = "snps,dwc3";
230              reg = <0xff500000 0x100000>;
231              interrupts = <30>;
232              dr_mode = "host";
233              snps,dis_u2_susphy_quirk;
234              snps,quirk-frame-length-adjustment = <0x20>;
235          };
236    };
237