1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/phy/nvidia,tegra186-xusb-padctl.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: NVIDIA Tegra186 XUSB pad controller
8
9 maintainers:
10 - Thierry Reding <thierry.reding@gmail.com>
11 - Jon Hunter <jonathanh@nvidia.com>
12
13 description: |
14 The Tegra XUSB pad controller manages a set of I/O lanes (with differential
15 signals) which connect directly to pins/pads on the SoC package. Each lane
16 is controlled by a HW block referred to as a "pad" in the Tegra hardware
17 documentation. Each such "pad" may control either one or multiple lanes,
18 and thus contains any logic common to all its lanes. Each lane can be
19 separately configured and powered up.
20
21 Some of the lanes are high-speed lanes, which can be used for PCIe, SATA or
22 super-speed USB. Other lanes are for various types of low-speed, full-speed
23 or high-speed USB (such as UTMI, ULPI and HSIC). The XUSB pad controller
24 contains a software-configurable mux that sits between the I/O controller
25 ports (e.g. PCIe) and the lanes.
26
27 In addition to per-lane configuration, USB 3.0 ports may require additional
28 settings on a per-board basis.
29
30 Pads will be represented as children of the top-level XUSB pad controller
31 device tree node. Each lane exposed by the pad will be represented by its
32 own subnode and can be referenced by users of the lane using the standard
33 PHY bindings, as described by the phy-bindings.txt file in this directory.
34
35 The Tegra hardware documentation refers to the connection between the XUSB
36 pad controller and the XUSB controller as "ports". This is confusing since
37 "port" is typically used to denote the physical USB receptacle. The device
38 tree binding in this document uses the term "port" to refer to the logical
39 abstraction of the signals that are routed to a USB receptacle (i.e. a PHY
40 for the USB signal, the VBUS power supply, the USB 2.0 companion port for
41 USB 3.0 receptacles, ...).
42
43 properties:
44 compatible:
45 const: nvidia,tegra186-xusb-padctl
46
47 reg:
48 items:
49 - description: pad controller registers
50 - description: AO registers
51
52 interrupts:
53 items:
54 - description: XUSB pad controller interrupt
55
56 reg-names:
57 items:
58 - const: padctl
59 - const: ao
60
61 resets:
62 items:
63 - description: pad controller reset
64
65 reset-names:
66 items:
67 - const: padctl
68
69 avdd-pll-erefeut-supply:
70 description: UPHY brick and reference clock as well as UTMI PHY
71 power supply. Must supply 1.8 V.
72
73 avdd-usb-supply:
74 description: USB I/Os, VBUS, ID, REXT, D+/D- power supply. Must
75 supply 3.3 V.
76
77 vclamp-usb-supply:
78 description: Bias rail for USB pad. Must supply 1.8 V.
79
80 vddio-hsic-supply:
81 description: HSIC PHY power supply. Must supply 1.2 V.
82
83 pads:
84 description: A required child node named "pads" contains a list of
85 subnodes, one for each of the pads exposed by the XUSB pad controller.
86 Each pad may need additional resources that can be referenced in its
87 pad node.
88
89 The "status" property is used to enable or disable the use of a pad.
90 If set to "disabled", the pad will not be used on the given board. In
91 order to use the pad and any of its lanes, this property must be set
92 to "okay" or be absent.
93 type: object
94 additionalProperties: false
95 properties:
96 usb2:
97 type: object
98 additionalProperties: false
99 properties:
100 clocks:
101 items:
102 - description: USB2 tracking clock
103
104 clock-names:
105 items:
106 - const: trk
107
108 lanes:
109 type: object
110 additionalProperties: false
111 properties:
112 usb2-0:
113 type: object
114 additionalProperties: false
115 properties:
116 "#phy-cells":
117 const: 0
118
119 nvidia,function:
120 description: Function selection for this lane.
121 $ref: /schemas/types.yaml#/definitions/string
122 enum: [ xusb ]
123
124 usb2-1:
125 type: object
126 additionalProperties: false
127 properties:
128 "#phy-cells":
129 const: 0
130
131 nvidia,function:
132 description: Function selection for this lane.
133 $ref: /schemas/types.yaml#/definitions/string
134 enum: [ xusb ]
135
136 usb2-2:
137 type: object
138 additionalProperties: false
139 properties:
140 "#phy-cells":
141 const: 0
142
143 nvidia,function:
144 description: Function selection for this lane.
145 $ref: /schemas/types.yaml#/definitions/string
146 enum: [ xusb ]
147
148 hsic:
149 type: object
150 additionalProperties: false
151 properties:
152 clocks:
153 items:
154 - description: HSIC tracking clock
155
156 clock-names:
157 items:
158 - const: trk
159
160 lanes:
161 type: object
162 additionalProperties: false
163 properties:
164 hsic-0:
165 type: object
166 additionalProperties: false
167 properties:
168 "#phy-cells":
169 const: 0
170
171 nvidia,function:
172 description: Function selection for this lane.
173 $ref: /schemas/types.yaml#/definitions/string
174 enum: [ xusb ]
175
176 usb3:
177 type: object
178 additionalProperties: false
179 properties:
180 lanes:
181 type: object
182 additionalProperties: false
183 properties:
184 usb3-0:
185 type: object
186 additionalProperties: false
187 properties:
188 "#phy-cells":
189 const: 0
190
191 nvidia,function:
192 description: Function selection for this lane.
193 $ref: /schemas/types.yaml#/definitions/string
194 enum: [ xusb ]
195
196 usb3-1:
197 type: object
198 additionalProperties: false
199 properties:
200 "#phy-cells":
201 const: 0
202
203 nvidia,function:
204 description: Function selection for this lane.
205 $ref: /schemas/types.yaml#/definitions/string
206 enum: [ xusb ]
207
208 usb3-2:
209 type: object
210 additionalProperties: false
211 properties:
212 "#phy-cells":
213 const: 0
214
215 nvidia,function:
216 description: Function selection for this lane.
217 $ref: /schemas/types.yaml#/definitions/string
218 enum: [ xusb ]
219
220 ports:
221 description: A required child node named "ports" contains a list of
222 subnodes, one for each of the ports exposed by the XUSB pad controller.
223 Each port may need additional resources that can be referenced in its
224 port node.
225
226 The "status" property is used to enable or disable the use of a port.
227 If set to "disabled", the port will not be used on the given board. In
228 order to use the port, this property must be set to "okay".
229 type: object
230 additionalProperties: false
231 properties:
232 usb2-0:
233 type: object
234 additionalProperties: false
235 properties:
236 # no need to further describe this because the connector will
237 # match on gpio-usb-b-connector or usb-b-connector and cause
238 # that binding to be selected for the subnode
239 connector:
240 type: object
241
242 mode:
243 description: A string that determines the mode in which to
244 run the port.
245 $ref: /schemas/types.yaml#/definitions/string
246 enum: [ host, peripheral, otg ]
247
248 nvidia,internal:
249 description: A boolean property whose presence determines
250 that a port is internal. In the absence of this property
251 the port is considered to be external.
252 $ref: /schemas/types.yaml#/definitions/flag
253
254 usb-role-switch:
255 description: |
256 A boolean property whole presence indicates that the port
257 supports OTG or peripheral mode. If present, the port
258 supports switching between USB host and peripheral roles.
259 A connector must be added as a subnode in that case.
260
261 See ../connector/usb-connector.yaml.
262
263 vbus-supply:
264 description: A phandle to the regulator supplying the VBUS
265 voltage.
266
267 dependencies:
268 usb-role-switch: [ connector ]
269
270 usb2-1:
271 type: object
272 additionalProperties: false
273 properties:
274 # no need to further describe this because the connector will
275 # match on gpio-usb-b-connector or usb-b-connector and cause
276 # that binding to be selected for the subnode
277 connector:
278 type: object
279
280 mode:
281 description: A string that determines the mode in which to
282 run the port.
283 $ref: /schemas/types.yaml#/definitions/string
284 enum: [ host, peripheral, otg ]
285
286 nvidia,internal:
287 description: A boolean property whose presence determines
288 that a port is internal. In the absence of this property
289 the port is considered to be external.
290 $ref: /schemas/types.yaml#/definitions/flag
291
292 usb-role-switch:
293 description: |
294 A boolean property whole presence indicates that the port
295 supports OTG or peripheral mode. If present, the port
296 supports switching between USB host and peripheral roles.
297 A connector must be added as a subnode in that case.
298
299 See ../connector/usb-connector.yaml.
300
301 vbus-supply:
302 description: A phandle to the regulator supplying the VBUS
303 voltage.
304
305 dependencies:
306 usb-role-switch: [ connector ]
307
308 usb2-2:
309 type: object
310 additionalProperties: false
311 properties:
312 # no need to further describe this because the connector will
313 # match on gpio-usb-b-connector or usb-b-connector and cause
314 # that binding to be selected for the subnode
315 connector:
316 type: object
317
318 mode:
319 description: A string that determines the mode in which to
320 run the port.
321 $ref: /schemas/types.yaml#/definitions/string
322 enum: [ host, peripheral, otg ]
323
324 nvidia,internal:
325 description: A boolean property whose presence determines
326 that a port is internal. In the absence of this property
327 the port is considered to be external.
328 $ref: /schemas/types.yaml#/definitions/flag
329
330 usb-role-switch:
331 description: |
332 A boolean property whole presence indicates that the port
333 supports OTG or peripheral mode. If present, the port
334 supports switching between USB host and peripheral roles.
335 A connector must be added as a subnode in that case.
336
337 See ../connector/usb-connector.yaml.
338
339 vbus-supply:
340 description: A phandle to the regulator supplying the VBUS
341 voltage.
342
343 dependencies:
344 usb-role-switch: [ connector ]
345
346 hsic-0:
347 type: object
348 additionalProperties: false
349
350 usb3-0:
351 type: object
352 additionalProperties: false
353 properties:
354 nvidia,internal:
355 description: A boolean property whose presence determines
356 that a port is internal. In the absence of this property
357 the port is considered to be external.
358 $ref: /schemas/types.yaml#/definitions/flag
359
360 nvidia,usb2-companion:
361 description: A single cell that specifies the physical port
362 number to map this super-speed USB port to. The range of
363 valid port numbers varies with the SoC generation.
364 $ref: /schemas/types.yaml#/definitions/uint32
365 enum: [ 0, 1, 2, 3 ]
366
367 vbus-supply:
368 description: A phandle to the regulator supplying the VBUS
369 voltage.
370
371 usb3-1:
372 type: object
373 additionalProperties: false
374 properties:
375 nvidia,internal:
376 description: A boolean property whose presence determines
377 that a port is internal. In the absence of this property
378 the port is considered to be external.
379 $ref: /schemas/types.yaml#/definitions/flag
380
381 nvidia,usb2-companion:
382 description: A single cell that specifies the physical port
383 number to map this super-speed USB port to. The range of
384 valid port numbers varies with the SoC generation.
385 $ref: /schemas/types.yaml#/definitions/uint32
386 enum: [ 0, 1, 2, 3 ]
387
388 vbus-supply:
389 description: A phandle to the regulator supplying the VBUS
390 voltage.
391
392 usb3-2:
393 type: object
394 additionalProperties: false
395 properties:
396 nvidia,internal:
397 description: A boolean property whose presence determines
398 that a port is internal. In the absence of this property
399 the port is considered to be external.
400 $ref: /schemas/types.yaml#/definitions/flag
401
402 nvidia,usb2-companion:
403 description: A single cell that specifies the physical port
404 number to map this super-speed USB port to. The range of
405 valid port numbers varies with the SoC generation.
406 $ref: /schemas/types.yaml#/definitions/uint32
407 enum: [ 0, 1, 2, 3 ]
408
409 vbus-supply:
410 description: A phandle to the regulator supplying the VBUS
411 voltage.
412
413 additionalProperties: false
414
415 required:
416 - compatible
417 - reg
418 - resets
419 - reset-names
420 - avdd-pll-erefeut-supply
421 - avdd-usb-supply
422 - vclamp-usb-supply
423 - vddio-hsic-supply
424
425 examples:
426 - |
427 #include <dt-bindings/clock/tegra186-clock.h>
428 #include <dt-bindings/gpio/tegra186-gpio.h>
429 #include <dt-bindings/interrupt-controller/arm-gic.h>
430 #include <dt-bindings/reset/tegra186-reset.h>
431
432 padctl@3520000 {
433 compatible = "nvidia,tegra186-xusb-padctl";
434 reg = <0x03520000 0x1000>,
435 <0x03540000 0x1000>;
436 reg-names = "padctl", "ao";
437 interrupts = <GIC_SPI 167 IRQ_TYPE_LEVEL_HIGH>;
438
439 resets = <&bpmp TEGRA186_RESET_XUSB_PADCTL>;
440 reset-names = "padctl";
441
442 avdd-pll-erefeut-supply = <&vdd_1v8_pll>;
443 avdd-usb-supply = <&vdd_3v3_sys>;
444 vclamp-usb-supply = <&vdd_1v8>;
445 vddio-hsic-supply = <&gnd>;
446
447 pads {
448 usb2 {
449 clocks = <&bpmp TEGRA186_CLK_USB2_TRK>;
450 clock-names = "trk";
451
452 lanes {
453 usb2-0 {
454 nvidia,function = "xusb";
455 #phy-cells = <0>;
456 };
457
458 usb2-1 {
459 nvidia,function = "xusb";
460 #phy-cells = <0>;
461 };
462
463 usb2-2 {
464 nvidia,function = "xusb";
465 #phy-cells = <0>;
466 };
467 };
468 };
469
470 hsic {
471 clocks = <&bpmp TEGRA186_CLK_HSIC_TRK>;
472 clock-names = "trk";
473 status = "disabled";
474
475 lanes {
476 hsic-0 {
477 status = "disabled";
478 #phy-cells = <0>;
479 };
480 };
481 };
482
483 usb3 {
484 lanes {
485 usb3-0 {
486 nvidia,function = "xusb";
487 #phy-cells = <0>;
488 };
489
490 usb3-1 {
491 nvidia,function = "xusb";
492 #phy-cells = <0>;
493 };
494
495 usb3-2 {
496 nvidia,function = "xusb";
497 #phy-cells = <0>;
498 };
499 };
500 };
501 };
502
503 ports {
504 usb2-0 {
505 mode = "otg";
506 vbus-supply = <&vdd_usb0>;
507 usb-role-switch;
508
509 connector {
510 compatible = "gpio-usb-b-connector",
511 "usb-b-connector";
512 label = "micro-USB";
513 type = "micro";
514 vbus-gpios = <&gpio TEGRA186_MAIN_GPIO(X, 7) GPIO_ACTIVE_LOW>;
515 id-gpios = <&pmic 0 GPIO_ACTIVE_HIGH>;
516 };
517 };
518
519 usb2-1 {
520 vbus-supply = <&vdd_usb1>;
521 mode = "host";
522 };
523
524 usb2-2 {
525 status = "disabled";
526 };
527
528 hsic-0 {
529 status = "disabled";
530 };
531
532 usb3-0 {
533 nvidia,usb2-companion = <1>;
534 };
535
536 usb3-1 {
537 status = "disabled";
538 };
539
540 usb3-2 {
541 status = "disabled";
542 };
543 };
544 };
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