1 # SPDX-License-Identifier: GPL-2.0-only OR BSD 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/phy/phy-stm 4 $id: http://devicetree.org/schemas/phy/phy-stm32-usbphyc.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: STMicroelectronics STM32 USB HS PHY con 7 title: STMicroelectronics STM32 USB HS PHY controller
8 8
9 description: 9 description:
10 10
11 The STM32 USBPHYC block contains a dual port 11 The STM32 USBPHYC block contains a dual port High Speed UTMI+ PHY and a UTMI
12 switch. It controls PHY configuration and st 12 switch. It controls PHY configuration and status, and the UTMI+ switch that
13 selects either OTG or HOST controller for th 13 selects either OTG or HOST controller for the second PHY port. It also sets
14 PLL configuration. 14 PLL configuration.
15 15
16 USBPHYC 16 USBPHYC
17 |_ PLL 17 |_ PLL
18 | 18 |
19 |_ PHY port#1 _________________ HOST control 19 |_ PHY port#1 _________________ HOST controller
20 | __ | 20 | __ |
21 | / 1|________________| 21 | / 1|________________|
22 |_ PHY port#2 ----| |________________ 22 |_ PHY port#2 ----| |________________
23 | \_0| | 23 | \_0| |
24 |_ UTMI switch_______| OTG controll 24 |_ UTMI switch_______| OTG controller
25 25
26 maintainers: 26 maintainers:
27 - Amelie Delaunay <amelie.delaunay@foss.st.co 27 - Amelie Delaunay <amelie.delaunay@foss.st.com>
28 28
29 properties: 29 properties:
30 compatible: 30 compatible:
31 const: st,stm32mp1-usbphyc 31 const: st,stm32mp1-usbphyc
32 32
33 reg: 33 reg:
34 maxItems: 1 34 maxItems: 1
35 35
36 clocks: 36 clocks:
37 maxItems: 1 37 maxItems: 1
38 38
39 resets: 39 resets:
40 maxItems: 1 40 maxItems: 1
41 41
42 "#address-cells": 42 "#address-cells":
43 const: 1 43 const: 1
44 44
45 "#size-cells": 45 "#size-cells":
46 const: 0 46 const: 0
47 47
48 vdda1v1-supply: 48 vdda1v1-supply:
49 description: regulator providing 1V1 power 49 description: regulator providing 1V1 power supply to the PLL block
50 50
51 vdda1v8-supply: 51 vdda1v8-supply:
52 description: regulator providing 1V8 power 52 description: regulator providing 1V8 power supply to the PLL block
53 53
54 '#clock-cells': 54 '#clock-cells':
55 description: number of clock cells for ck_ 55 description: number of clock cells for ck_usbo_48m consumer
56 const: 0 56 const: 0
57 57
58 access-controllers: 58 access-controllers:
59 minItems: 1 59 minItems: 1
60 maxItems: 2 60 maxItems: 2
61 61
62 # Required child nodes: 62 # Required child nodes:
63 63
64 patternProperties: 64 patternProperties:
65 "^usb-phy@[0|1]$": 65 "^usb-phy@[0|1]$":
66 type: object 66 type: object
67 description: 67 description:
68 Each port the controller provides must b 68 Each port the controller provides must be represented as a sub-node.
69 69
70 properties: 70 properties:
71 reg: 71 reg:
72 description: phy port index. 72 description: phy port index.
73 maxItems: 1 73 maxItems: 1
74 74
75 phy-supply: 75 phy-supply:
76 description: regulator providing 3V3 p 76 description: regulator providing 3V3 power supply to the PHY.
77 77
78 "#phy-cells": 78 "#phy-cells":
79 enum: [ 0x0, 0x1 ] 79 enum: [ 0x0, 0x1 ]
80 80
81 connector: 81 connector:
82 type: object 82 type: object
83 $ref: /schemas/connector/usb-connector 83 $ref: /schemas/connector/usb-connector.yaml
84 unevaluatedProperties: false 84 unevaluatedProperties: false
85 85
86 properties: 86 properties:
87 vbus-supply: true 87 vbus-supply: true
88 88
89 # It can be necessary to adjust the PHY 89 # It can be necessary to adjust the PHY settings to compensate parasitics, which can be due
90 # to USB connector/receptacle, routing, 90 # to USB connector/receptacle, routing, ESD protection component,... Here is the list of
91 # all optional parameters to tune the in 91 # all optional parameters to tune the interface of the PHY (HS for High-Speed, FS for Full-
92 # Speed, LS for Low-Speed) 92 # Speed, LS for Low-Speed)
93 93
94 st,current-boost-microamp: 94 st,current-boost-microamp:
95 description: Current boosting in uA 95 description: Current boosting in uA
96 enum: [ 1000, 2000 ] 96 enum: [ 1000, 2000 ]
97 97
98 st,no-lsfs-fb-cap: 98 st,no-lsfs-fb-cap:
99 description: Disables the LS/FS feedba 99 description: Disables the LS/FS feedback capacitor
100 type: boolean 100 type: boolean
101 101
102 st,decrease-hs-slew-rate: 102 st,decrease-hs-slew-rate:
103 description: Decreases the HS driver s 103 description: Decreases the HS driver slew rate by 10%
104 type: boolean 104 type: boolean
105 105
106 st,tune-hs-dc-level: 106 st,tune-hs-dc-level:
107 description: | 107 description: |
108 Tunes the HS driver DC level 108 Tunes the HS driver DC level
109 - <0> normal level 109 - <0> normal level
110 - <1> increases the level by 5 to 7 110 - <1> increases the level by 5 to 7 mV
111 - <2> increases the level by 10 to 1 111 - <2> increases the level by 10 to 14 mV
112 - <3> decreases the level by 5 to 7 112 - <3> decreases the level by 5 to 7 mV
113 $ref: /schemas/types.yaml#/definitions 113 $ref: /schemas/types.yaml#/definitions/uint32
114 minimum: 0 114 minimum: 0
115 maximum: 3 115 maximum: 3
116 default: 0 116 default: 0
117 117
118 st,enable-fs-rftime-tuning: 118 st,enable-fs-rftime-tuning:
119 description: Enables the FS rise/fall 119 description: Enables the FS rise/fall tuning option
120 type: boolean 120 type: boolean
121 121
122 st,enable-hs-rftime-reduction: 122 st,enable-hs-rftime-reduction:
123 description: Enables the HS rise/fall 123 description: Enables the HS rise/fall reduction feature
124 type: boolean 124 type: boolean
125 125
126 st,trim-hs-current: 126 st,trim-hs-current:
127 description: | 127 description: |
128 Controls HS driver current trimming 128 Controls HS driver current trimming for choke compensation
129 - <0> = 18.87 mA target current / no 129 - <0> = 18.87 mA target current / nominal + 0%
130 - <1> = 19.165 mA target current / n 130 - <1> = 19.165 mA target current / nominal + 1.56%
131 - <2> = 19.46 mA target current / no 131 - <2> = 19.46 mA target current / nominal + 3.12%
132 - <3> = 19.755 mA target current / n 132 - <3> = 19.755 mA target current / nominal + 4.68%
133 - <4> = 20.05 mA target current / no 133 - <4> = 20.05 mA target current / nominal + 6.24%
134 - <5> = 20.345 mA target current / n 134 - <5> = 20.345 mA target current / nominal + 7.8%
135 - <6> = 20.64 mA target current / no 135 - <6> = 20.64 mA target current / nominal + 9.36%
136 - <7> = 20.935 mA target current / n 136 - <7> = 20.935 mA target current / nominal + 10.92%
137 - <8> = 21.23 mA target current / no 137 - <8> = 21.23 mA target current / nominal + 12.48%
138 - <9> = 21.525 mA target current / n 138 - <9> = 21.525 mA target current / nominal + 14.04%
139 - <10> = 21.82 mA target current / n 139 - <10> = 21.82 mA target current / nominal + 15.6%
140 - <11> = 22.115 mA target current / 140 - <11> = 22.115 mA target current / nominal + 17.16%
141 - <12> = 22.458 mA target current / 141 - <12> = 22.458 mA target current / nominal + 19.01%
142 - <13> = 22.755 mA target current / 142 - <13> = 22.755 mA target current / nominal + 20.58%
143 - <14> = 23.052 mA target current / 143 - <14> = 23.052 mA target current / nominal + 22.16%
144 - <15> = 23.348 mA target current / 144 - <15> = 23.348 mA target current / nominal + 23.73%
145 $ref: /schemas/types.yaml#/definitions 145 $ref: /schemas/types.yaml#/definitions/uint32
146 minimum: 0 146 minimum: 0
147 maximum: 15 147 maximum: 15
148 default: 0 148 default: 0
149 149
150 st,trim-hs-impedance: 150 st,trim-hs-impedance:
151 description: | 151 description: |
152 Controls HS driver impedance tuning 152 Controls HS driver impedance tuning for choke compensation
153 - <0> = no impedance offset 153 - <0> = no impedance offset
154 - <1> = reduce the impedance by 2 oh 154 - <1> = reduce the impedance by 2 ohms
155 - <2> = reduce the impedance by 4 oh 155 - <2> = reduce the impedance by 4 ohms
156 - <3> = reduce the impedance by 6 oh 156 - <3> = reduce the impedance by 6 ohms
157 $ref: /schemas/types.yaml#/definitions 157 $ref: /schemas/types.yaml#/definitions/uint32
158 minimum: 0 158 minimum: 0
159 maximum: 3 159 maximum: 3
160 default: 0 160 default: 0
161 161
162 st,tune-squelch-level: 162 st,tune-squelch-level:
163 description: | 163 description: |
164 Tunes the squelch DC threshold value 164 Tunes the squelch DC threshold value
165 - <0> = no shift in threshold 165 - <0> = no shift in threshold
166 - <1> = threshold shift by +7 mV 166 - <1> = threshold shift by +7 mV
167 - <2> = threshold shift by -5 mV 167 - <2> = threshold shift by -5 mV
168 - <3> = threshold shift by +14 mV 168 - <3> = threshold shift by +14 mV
169 $ref: /schemas/types.yaml#/definitions 169 $ref: /schemas/types.yaml#/definitions/uint32
170 minimum: 0 170 minimum: 0
171 maximum: 3 171 maximum: 3
172 default: 0 172 default: 0
173 173
174 st,enable-hs-rx-gain-eq: 174 st,enable-hs-rx-gain-eq:
175 description: Enables the HS Rx gain eq 175 description: Enables the HS Rx gain equalizer
176 type: boolean 176 type: boolean
177 177
178 st,tune-hs-rx-offset: 178 st,tune-hs-rx-offset:
179 description: | 179 description: |
180 Adjusts the HS Rx offset 180 Adjusts the HS Rx offset
181 - <0> = no offset 181 - <0> = no offset
182 - <1> = offset of +5 mV 182 - <1> = offset of +5 mV
183 - <2> = offset of +10 mV 183 - <2> = offset of +10 mV
184 - <3> = offset of -5 mV 184 - <3> = offset of -5 mV
185 $ref: /schemas/types.yaml#/definitions 185 $ref: /schemas/types.yaml#/definitions/uint32
186 minimum: 0 186 minimum: 0
187 maximum: 3 187 maximum: 3
188 default: 0 188 default: 0
189 189
190 st,no-hs-ftime-ctrl: 190 st,no-hs-ftime-ctrl:
191 description: Disables the HS fall time 191 description: Disables the HS fall time control of single ended signals during pre-emphasis
192 type: boolean 192 type: boolean
193 193
194 st,no-lsfs-sc: 194 st,no-lsfs-sc:
195 description: Disables the short circui 195 description: Disables the short circuit protection in LS/FS driver
196 type: boolean 196 type: boolean
197 197
198 st,enable-hs-tx-staggering: 198 st,enable-hs-tx-staggering:
199 description: Enables the basic stagger 199 description: Enables the basic staggering in HS Tx mode
200 type: boolean 200 type: boolean
201 201
202 allOf: 202 allOf:
203 - if: 203 - if:
204 properties: 204 properties:
205 reg: 205 reg:
206 const: 0 206 const: 0
207 then: 207 then:
208 properties: 208 properties:
209 "#phy-cells": 209 "#phy-cells":
210 const: 0 210 const: 0
211 else: 211 else:
212 properties: 212 properties:
213 "#phy-cells": 213 "#phy-cells":
214 const: 1 214 const: 1
215 description: 215 description:
216 The value is used to select UT 216 The value is used to select UTMI switch output.
217 0 for OTG controller and 1 for 217 0 for OTG controller and 1 for Host controller.
218 218
219 required: 219 required:
220 - reg 220 - reg
221 - phy-supply 221 - phy-supply
222 - "#phy-cells" 222 - "#phy-cells"
223 223
224 additionalProperties: false 224 additionalProperties: false
225 225
226 required: 226 required:
227 - compatible 227 - compatible
228 - reg 228 - reg
229 - clocks 229 - clocks
230 - "#address-cells" 230 - "#address-cells"
231 - "#size-cells" 231 - "#size-cells"
232 - vdda1v1-supply 232 - vdda1v1-supply
233 - vdda1v8-supply 233 - vdda1v8-supply
234 - usb-phy@0 234 - usb-phy@0
235 - usb-phy@1 235 - usb-phy@1
236 236
237 additionalProperties: false 237 additionalProperties: false
238 238
239 examples: 239 examples:
240 - | 240 - |
241 #include <dt-bindings/clock/stm32mp1-clks. 241 #include <dt-bindings/clock/stm32mp1-clks.h>
242 #include <dt-bindings/reset/stm32mp1-reset 242 #include <dt-bindings/reset/stm32mp1-resets.h>
243 usbphyc: usbphyc@5a006000 { 243 usbphyc: usbphyc@5a006000 {
244 compatible = "st,stm32mp1-usbphyc"; 244 compatible = "st,stm32mp1-usbphyc";
245 reg = <0x5a006000 0x1000>; 245 reg = <0x5a006000 0x1000>;
246 clocks = <&rcc USBPHY_K>; 246 clocks = <&rcc USBPHY_K>;
247 resets = <&rcc USBPHY_R>; 247 resets = <&rcc USBPHY_R>;
248 vdda1v1-supply = <®11>; 248 vdda1v1-supply = <®11>;
249 vdda1v8-supply = <®18>; 249 vdda1v8-supply = <®18>;
250 #address-cells = <1>; 250 #address-cells = <1>;
251 #size-cells = <0>; 251 #size-cells = <0>;
252 #clock-cells = <0>; 252 #clock-cells = <0>;
253 253
254 usbphyc_port0: usb-phy@0 { 254 usbphyc_port0: usb-phy@0 {
255 reg = <0>; 255 reg = <0>;
256 phy-supply = <&vdd_usb>; 256 phy-supply = <&vdd_usb>;
257 #phy-cells = <0>; 257 #phy-cells = <0>;
258 st,tune-hs-dc-level = <2>; 258 st,tune-hs-dc-level = <2>;
259 st,enable-fs-rftime-tuning; 259 st,enable-fs-rftime-tuning;
260 st,enable-hs-rftime-reduction; 260 st,enable-hs-rftime-reduction;
261 st,trim-hs-current = <15>; 261 st,trim-hs-current = <15>;
262 st,trim-hs-impedance = <1>; 262 st,trim-hs-impedance = <1>;
263 st,tune-squelch-level = <3>; 263 st,tune-squelch-level = <3>;
264 st,tune-hs-rx-offset = <2>; 264 st,tune-hs-rx-offset = <2>;
265 st,no-lsfs-sc; 265 st,no-lsfs-sc;
266 connector { 266 connector {
267 compatible = "usb-a-connector" 267 compatible = "usb-a-connector";
268 vbus-supply = <&vbus_sw>; 268 vbus-supply = <&vbus_sw>;
269 }; 269 };
270 }; 270 };
271 271
272 usbphyc_port1: usb-phy@1 { 272 usbphyc_port1: usb-phy@1 {
273 reg = <1>; 273 reg = <1>;
274 phy-supply = <&vdd_usb>; 274 phy-supply = <&vdd_usb>;
275 #phy-cells = <1>; 275 #phy-cells = <1>;
276 st,tune-hs-dc-level = <2>; 276 st,tune-hs-dc-level = <2>;
277 st,enable-fs-rftime-tuning; 277 st,enable-fs-rftime-tuning;
278 st,enable-hs-rftime-reduction; 278 st,enable-hs-rftime-reduction;
279 st,trim-hs-current = <15>; 279 st,trim-hs-current = <15>;
280 st,trim-hs-impedance = <1>; 280 st,trim-hs-impedance = <1>;
281 st,tune-squelch-level = <3>; 281 st,tune-squelch-level = <3>;
282 st,tune-hs-rx-offset = <2>; 282 st,tune-hs-rx-offset = <2>;
283 st,no-lsfs-sc; 283 st,no-lsfs-sc;
284 }; 284 };
285 }; 285 };
286 ... 286 ...
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