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git01.mediatek.com / filogic / uboot / 219e52c44cd21f75636527fc583d9fe9379792be / . / dts / upstream / Bindings / power / rockchip-io-domain.yaml
blob: d71fc72d446444947f06c3aea228e7e329b6b7f2 [file] [log] [blame]
Tom Rini53633a82024-02-29 12:33:36 -0500[diff] [blame]1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/power/rockchip-io-domain.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Rockchip SRAM for IO Voltage Domains
8
9maintainers:
10 - Heiko Stuebner <heiko@sntech.de>
11
12description: |
13 IO domain voltages on some Rockchip SoCs are variable but need to be
14 kept in sync between the regulators and the SoC using a special
15 register.
16
17 A specific example using rk3288
18 If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then
19 bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to
20 that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1.
21
22 Said another way, this driver simply handles keeping bits in the SoCs
23 General Register File (GRF) in sync with the actual value of a voltage
24 hooked up to the pins.
25
26 Note that this driver specifically does not include
27 any logic for deciding what voltage we should set regulators to
28 any logic for deciding whether regulators (or internal SoC blocks)
29 should have power or not have power
30
31 If there were some other software that had the smarts of making
32 decisions about regulators, it would work in conjunction with this
33 driver. When that other software adjusted a regulators voltage then
34 this driver would handle telling the SoC about it. A good example is
35 vqmmc for SD. In that case the dw_mmc driver simply is told about a
36 regulator. It changes the regulator between 3.3V and 1.8V at the
37 right time. This driver notices the change and makes sure that the
38 SoC is on the same page.
39
40 You specify supplies using the standard regulator bindings by including
41 a phandle the relevant regulator. All specified supplies must be able
42 to report their voltage. The IO Voltage Domain for any non-specified
43 supplies will be not be touched.
44
45properties:
46 compatible:
47 enum:
48 - rockchip,px30-io-voltage-domain
49 - rockchip,px30-pmu-io-voltage-domain
50 - rockchip,rk3188-io-voltage-domain
51 - rockchip,rk3228-io-voltage-domain
52 - rockchip,rk3288-io-voltage-domain
53 - rockchip,rk3328-io-voltage-domain
54 - rockchip,rk3368-io-voltage-domain
55 - rockchip,rk3368-pmu-io-voltage-domain
56 - rockchip,rk3399-io-voltage-domain
57 - rockchip,rk3399-pmu-io-voltage-domain
58 - rockchip,rk3568-pmu-io-voltage-domain
59 - rockchip,rv1108-io-voltage-domain
60 - rockchip,rv1108-pmu-io-voltage-domain
61 - rockchip,rv1126-pmu-io-voltage-domain
62
63required:
64 - compatible
65
66unevaluatedProperties: false
67
68allOf:
69 - $ref: "#/$defs/px30"
70 - $ref: "#/$defs/px30-pmu"
71 - $ref: "#/$defs/rk3188"
72 - $ref: "#/$defs/rk3228"
73 - $ref: "#/$defs/rk3288"
74 - $ref: "#/$defs/rk3328"
75 - $ref: "#/$defs/rk3368"
76 - $ref: "#/$defs/rk3368-pmu"
77 - $ref: "#/$defs/rk3399"
78 - $ref: "#/$defs/rk3399-pmu"
79 - $ref: "#/$defs/rk3568-pmu"
80 - $ref: "#/$defs/rv1108"
81 - $ref: "#/$defs/rv1108-pmu"
82 - $ref: "#/$defs/rv1126-pmu"
83
84$defs:
85 px30:
86 if:
87 properties:
88 compatible:
89 contains:
90 const: rockchip,px30-io-voltage-domain
91
92 then:
93 properties:
94 vccio1-supply:
95 description: The supply connected to VCCIO1.
96 vccio2-supply:
97 description: The supply connected to VCCIO2.
98 vccio3-supply:
99 description: The supply connected to VCCIO3.
100 vccio4-supply:
101 description: The supply connected to VCCIO4.
102 vccio5-supply:
103 description: The supply connected to VCCIO5.
104 vccio6-supply:
105 description: The supply connected to VCCIO6.
106 vccio-oscgpi-supply:
107 description: The supply connected to VCCIO_OSCGPI.
108
109 px30-pmu:
110 if:
111 properties:
112 compatible:
113 contains:
114 const: rockchip,px30-pmu-io-voltage-domain
115
116 then:
117 properties:
118 pmuio1-supply:
119 description: The supply connected to PMUIO1.
120 pmuio2-supply:
121 description: The supply connected to PMUIO2.
122
123 rk3188:
124 if:
125 properties:
126 compatible:
127 contains:
128 const: rockchip,rk3188-io-voltage-domain
129
130 then:
131 properties:
132 ap0-supply:
133 description: The supply connected to AP0_VCC.
134 ap1-supply:
135 description: The supply connected to AP1_VCC.
136 cif-supply:
137 description: The supply connected to CIF_VCC.
138 flash-supply:
139 description: The supply connected to FLASH_VCC.
140 lcdc0-supply:
141 description: The supply connected to LCD0_VCC.
142 lcdc1-supply:
143 description: The supply connected to LCD1_VCC.
144 vccio0-supply:
145 description: The supply connected to VCCIO0.
146 vccio1-supply:
147 description: The supply connected to VCCIO1. Also labeled as VCCIO2.
148
149 rk3228:
150 if:
151 properties:
152 compatible:
153 contains:
154 const: rockchip,rk3228-io-voltage-domain
155
156 then:
157 properties:
158 vccio1-supply:
159 description: The supply connected to VCCIO1.
160 vccio2-supply:
161 description: The supply connected to VCCIO2.
162 vccio3-supply:
163 description: The supply connected to VCCIO3.
164 vccio4-supply:
165 description: The supply connected to VCCIO4.
166
167 rk3288:
168 if:
169 properties:
170 compatible:
171 contains:
172 const: rockchip,rk3288-io-voltage-domain
173
174 then:
175 properties:
176 audio-supply:
177 description: The supply connected to APIO4_VDD.
178 bb-supply:
179 description: The supply connected to APIO5_VDD.
180 dvp-supply:
181 description: The supply connected to DVPIO_VDD.
182 flash0-supply:
183 description: The supply connected to FLASH0_VDD. Typically for eMMC.
184 flash1-supply:
185 description: The supply connected to FLASH1_VDD. Also known as SDIO1.
186 gpio30-supply:
187 description: The supply connected to APIO1_VDD.
188 gpio1830-supply:
189 description: The supply connected to APIO2_VDD.
190 lcdc-supply:
191 description: The supply connected to LCDC_VDD.
192 sdcard-supply:
193 description: The supply connected to SDMMC0_VDD.
194 wifi-supply:
195 description: The supply connected to APIO3_VDD. Also known as SDIO0.
196
197 rk3328:
198 if:
199 properties:
200 compatible:
201 contains:
202 const: rockchip,rk3328-io-voltage-domain
203
204 then:
205 properties:
206 vccio1-supply:
207 description: The supply connected to VCCIO1.
208 vccio2-supply:
209 description: The supply connected to VCCIO2.
210 vccio3-supply:
211 description: The supply connected to VCCIO3.
212 vccio4-supply:
213 description: The supply connected to VCCIO4.
214 vccio5-supply:
215 description: The supply connected to VCCIO5.
216 vccio6-supply:
217 description: The supply connected to VCCIO6.
218 pmuio-supply:
219 description: The supply connected to VCCIO_PMU.
220
221 rk3368:
222 if:
223 properties:
224 compatible:
225 contains:
226 const: rockchip,rk3368-io-voltage-domain
227
228 then:
229 properties:
230 audio-supply:
231 description: The supply connected to APIO3_VDD.
232 dvp-supply:
233 description: The supply connected to DVPIO_VDD.
234 flash0-supply:
235 description: The supply connected to FLASH0_VDD. Typically for eMMC.
236 gpio30-supply:
237 description: The supply connected to APIO1_VDD.
238 gpio1830-supply:
239 description: The supply connected to APIO4_VDD.
240 sdcard-supply:
241 description: The supply connected to SDMMC0_VDD.
242 wifi-supply:
243 description: The supply connected to APIO2_VDD. Also known as SDIO0.
244
245 rk3368-pmu:
246 if:
247 properties:
248 compatible:
249 contains:
250 const: rockchip,rk3368-pmu-io-voltage-domain
251
252 then:
253 properties:
254 pmu-supply:
255 description: The supply connected to PMUIO_VDD.
256 vop-supply:
257 description: The supply connected to LCDC_VDD.
258
259 rk3399:
260 if:
261 properties:
262 compatible:
263 contains:
264 const: rockchip,rk3399-io-voltage-domain
265
266 then:
267 properties:
268 audio-supply:
269 description: The supply connected to APIO5_VDD.
270 bt656-supply:
271 description: The supply connected to APIO2_VDD.
272 gpio1830-supply:
273 description: The supply connected to APIO4_VDD.
274 sdmmc-supply:
275 description: The supply connected to SDMMC0_VDD.
276
277 rk3399-pmu:
278 if:
279 properties:
280 compatible:
281 contains:
282 const: rockchip,rk3399-pmu-io-voltage-domain
283
284 then:
285 properties:
286 pmu1830-supply:
287 description: The supply connected to PMUIO2_VDD.
288
289 rk3568-pmu:
290 if:
291 properties:
292 compatible:
293 contains:
294 const: rockchip,rk3568-pmu-io-voltage-domain
295
296 then:
297 properties:
298 pmuio1-supply:
299 description: The supply connected to PMUIO1.
300 pmuio2-supply:
301 description: The supply connected to PMUIO2.
302 vccio1-supply:
303 description: The supply connected to VCCIO1.
304 vccio2-supply:
305 description: The supply connected to VCCIO2.
306 vccio3-supply:
307 description: The supply connected to VCCIO3.
308 vccio4-supply:
309 description: The supply connected to VCCIO4.
310 vccio5-supply:
311 description: The supply connected to VCCIO5.
312 vccio6-supply:
313 description: The supply connected to VCCIO6.
314 vccio7-supply:
315 description: The supply connected to VCCIO7.
316
317 rv1108:
318 if:
319 properties:
320 compatible:
321 contains:
322 const: rockchip,rv1108-io-voltage-domain
323
324 then:
325 properties:
326 vccio1-supply:
327 description: The supply connected to APIO1_VDD.
328 vccio2-supply:
329 description: The supply connected to APIO2_VDD.
330 vccio3-supply:
331 description: The supply connected to APIO3_VDD.
332 vccio5-supply:
333 description: The supply connected to APIO5_VDD.
334 vccio6-supply:
335 description: The supply connected to APIO6_VDD.
336
337 rv1108-pmu:
338 if:
339 properties:
340 compatible:
341 contains:
342 const: rockchip,rv1108-pmu-io-voltage-domain
343
344 then:
345 properties:
346 pmu-supply:
347 description: The supply connected to PMUIO_VDD.
348
349 rv1126-pmu:
350 if:
351 properties:
352 compatible:
353 contains:
354 const: rockchip,rv1126-pmu-io-voltage-domain
355
356 then:
357 properties:
358 vccio1-supply:
359 description: The supply connected to VCCIO1.
360 vccio2-supply:
361 description: The supply connected to VCCIO2.
362 vccio3-supply:
363 description: The supply connected to VCCIO3.
364 vccio4-supply:
365 description: The supply connected to VCCIO4.
366 vccio5-supply:
367 description: The supply connected to VCCIO5.
368 vccio6-supply:
369 description: The supply connected to VCCIO6.
370 vccio7-supply:
371 description: The supply connected to VCCIO7.
372 pmuio0-supply:
373 description: The supply connected to PMUIO0.
374 pmuio1-supply:
375 description: The supply connected to PMUIO1.
376
377examples:
378 - |
379 io-domains {
380 compatible = "rockchip,rk3288-io-voltage-domain";
381 audio-supply = <&vcc18_codec>;
382 bb-supply = <&vcc33_io>;
383 dvp-supply = <&vcc_18>;
384 flash0-supply = <&vcc18_flashio>;
385 gpio1830-supply = <&vcc33_io>;
386 gpio30-supply = <&vcc33_pmuio>;
387 lcdc-supply = <&vcc33_lcd>;
388 sdcard-supply = <&vccio_sd>;
389 wifi-supply = <&vcc18_wl>;
390 };