1 /*
2  * OMAP3 powerdomain definitions
3  *
4  * Copyright (C) 2007-2008, 2011 Texas Instruments, Inc.
5  * Copyright (C) 2007-2011 Nokia Corporation
6  *
7  * Paul Walmsley, Jouni Högander
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License version 2 as
11  * published by the Free Software Foundation.
12  */
13 
14 #include <linux/kernel.h>
15 #include <linux/init.h>
16 #include <linux/bug.h>
17 
18 #include "soc.h"
19 #include "powerdomain.h"
20 #include "powerdomains2xxx_3xxx_data.h"
21 #include "prcm-common.h"
22 #include "prm2xxx_3xxx.h"
23 #include "prm-regbits-34xx.h"
24 #include "cm2xxx_3xxx.h"
25 #include "cm-regbits-34xx.h"
26 
27 /*
28  * 34XX-specific powerdomains, dependencies
29  */
30 
31 /*
32  * Powerdomains
33  */
34 
35 static struct powerdomain iva2_pwrdm = {
36 	.name		  = "iva2_pwrdm",
37 	.prcm_offs	  = OMAP3430_IVA2_MOD,
38 	.pwrsts		  = PWRSTS_OFF_RET_ON,
39 	.pwrsts_logic_ret = PWRSTS_OFF_RET,
40 	.banks		  = 4,
41 	.pwrsts_mem_ret	  = {
42 		[0] = PWRSTS_OFF_RET,
43 		[1] = PWRSTS_OFF_RET,
44 		[2] = PWRSTS_OFF_RET,
45 		[3] = PWRSTS_OFF_RET,
46 	},
47 	.pwrsts_mem_on	  = {
48 		[0] = PWRSTS_ON,
49 		[1] = PWRSTS_ON,
50 		[2] = PWRSTS_OFF_ON,
51 		[3] = PWRSTS_ON,
52 	},
53 	.voltdm		  = { .name = "mpu_iva" },
54 };
55 
56 static struct powerdomain mpu_3xxx_pwrdm = {
57 	.name		  = "mpu_pwrdm",
58 	.prcm_offs	  = MPU_MOD,
59 	.pwrsts		  = PWRSTS_OFF_RET_ON,
60 	.pwrsts_logic_ret = PWRSTS_OFF_RET,
61 	.flags		  = PWRDM_HAS_MPU_QUIRK,
62 	.banks		  = 1,
63 	.pwrsts_mem_ret	  = {
64 		[0] = PWRSTS_OFF_RET,
65 	},
66 	.pwrsts_mem_on	  = {
67 		[0] = PWRSTS_OFF_ON,
68 	},
69 	.voltdm		  = { .name = "mpu_iva" },
70 };
71 
72 static struct powerdomain mpu_am35x_pwrdm = {
73 	.name		  = "mpu_pwrdm",
74 	.prcm_offs	  = MPU_MOD,
75 	.pwrsts		  = PWRSTS_ON,
76 	.pwrsts_logic_ret = PWRSTS_ON,
77 	.flags		  = PWRDM_HAS_MPU_QUIRK,
78 	.banks		  = 1,
79 	.pwrsts_mem_ret	  = {
80 		[0] = PWRSTS_ON,
81 	},
82 	.pwrsts_mem_on	  = {
83 		[0] = PWRSTS_ON,
84 	},
85 	.voltdm		  = { .name = "mpu_iva" },
86 };
87 
88 /*
89  * The USBTLL Save-and-Restore mechanism is broken on
90  * 3430s up to ES3.0 and 3630ES1.0. Hence this feature
91  * needs to be disabled on these chips.
92  * Refer: 3430 errata ID i459 and 3630 errata ID i579
93  *
94  * Note: setting the SAR flag could help for errata ID i478
95  *  which applies to 3430 <= ES3.1, but since the SAR feature
96  *  is broken, do not use it.
97  */
98 static struct powerdomain core_3xxx_pre_es3_1_pwrdm = {
99 	.name		  = "core_pwrdm",
100 	.prcm_offs	  = CORE_MOD,
101 	.pwrsts		  = PWRSTS_OFF_RET_ON,
102 	.pwrsts_logic_ret = PWRSTS_OFF_RET,
103 	.banks		  = 2,
104 	.pwrsts_mem_ret	  = {
105 		[0] = PWRSTS_OFF_RET,	 /* MEM1RETSTATE */
106 		[1] = PWRSTS_OFF_RET,	 /* MEM2RETSTATE */
107 	},
108 	.pwrsts_mem_on	  = {
109 		[0] = PWRSTS_OFF_RET_ON, /* MEM1ONSTATE */
110 		[1] = PWRSTS_OFF_RET_ON, /* MEM2ONSTATE */
111 	},
112 	.voltdm		  = { .name = "core" },
113 };
114 
115 static struct powerdomain core_3xxx_es3_1_pwrdm = {
116 	.name		  = "core_pwrdm",
117 	.prcm_offs	  = CORE_MOD,
118 	.pwrsts		  = PWRSTS_OFF_RET_ON,
119 	.pwrsts_logic_ret = PWRSTS_OFF_RET,
120 	/*
121 	 * Setting the SAR flag for errata ID i478 which applies
122 	 *  to 3430 <= ES3.1
123 	 */
124 	.flags		  = PWRDM_HAS_HDWR_SAR, /* for USBTLL only */
125 	.banks		  = 2,
126 	.pwrsts_mem_ret	  = {
127 		[0] = PWRSTS_OFF_RET,	 /* MEM1RETSTATE */
128 		[1] = PWRSTS_OFF_RET,	 /* MEM2RETSTATE */
129 	},
130 	.pwrsts_mem_on	  = {
131 		[0] = PWRSTS_OFF_RET_ON, /* MEM1ONSTATE */
132 		[1] = PWRSTS_OFF_RET_ON, /* MEM2ONSTATE */
133 	},
134 	.voltdm		  = { .name = "core" },
135 };
136 
137 static struct powerdomain core_am35x_pwrdm = {
138 	.name		  = "core_pwrdm",
139 	.prcm_offs	  = CORE_MOD,
140 	.pwrsts		  = PWRSTS_ON,
141 	.pwrsts_logic_ret = PWRSTS_ON,
142 	.banks		  = 2,
143 	.pwrsts_mem_ret	  = {
144 		[0] = PWRSTS_ON,	 /* MEM1RETSTATE */
145 		[1] = PWRSTS_ON,	 /* MEM2RETSTATE */
146 	},
147 	.pwrsts_mem_on	  = {
148 		[0] = PWRSTS_ON, /* MEM1ONSTATE */
149 		[1] = PWRSTS_ON, /* MEM2ONSTATE */
150 	},
151 	.voltdm		  = { .name = "core" },
152 };
153 
154 static struct powerdomain dss_pwrdm = {
155 	.name		  = "dss_pwrdm",
156 	.prcm_offs	  = OMAP3430_DSS_MOD,
157 	.pwrsts		  = PWRSTS_OFF_RET_ON,
158 	.pwrsts_logic_ret = PWRSTS_RET,
159 	.banks		  = 1,
160 	.pwrsts_mem_ret	  = {
161 		[0] = PWRSTS_RET, /* MEMRETSTATE */
162 	},
163 	.pwrsts_mem_on	  = {
164 		[0] = PWRSTS_ON,  /* MEMONSTATE */
165 	},
166 	.voltdm		  = { .name = "core" },
167 };
168 
169 static struct powerdomain dss_am35x_pwrdm = {
170 	.name		  = "dss_pwrdm",
171 	.prcm_offs	  = OMAP3430_DSS_MOD,
172 	.pwrsts		  = PWRSTS_ON,
173 	.pwrsts_logic_ret = PWRSTS_ON,
174 	.banks		  = 1,
175 	.pwrsts_mem_ret	  = {
176 		[0] = PWRSTS_ON, /* MEMRETSTATE */
177 	},
178 	.pwrsts_mem_on	  = {
179 		[0] = PWRSTS_ON,  /* MEMONSTATE */
180 	},
181 	.voltdm		  = { .name = "core" },
182 };
183 
184 /*
185  * Although the 34XX TRM Rev K Table 4-371 notes that retention is a
186  * possible SGX powerstate, the SGX device itself does not support
187  * retention.
188  */
189 static struct powerdomain sgx_pwrdm = {
190 	.name		  = "sgx_pwrdm",
191 	.prcm_offs	  = OMAP3430ES2_SGX_MOD,
192 	/* XXX This is accurate for 3430 SGX, but what about GFX? */
193 	.pwrsts		  = PWRSTS_OFF_ON,
194 	.pwrsts_logic_ret = PWRSTS_RET,
195 	.banks		  = 1,
196 	.pwrsts_mem_ret	  = {
197 		[0] = PWRSTS_RET, /* MEMRETSTATE */
198 	},
199 	.pwrsts_mem_on	  = {
200 		[0] = PWRSTS_ON,  /* MEMONSTATE */
201 	},
202 	.voltdm		  = { .name = "core" },
203 };
204 
205 static struct powerdomain sgx_am35x_pwrdm = {
206 	.name		  = "sgx_pwrdm",
207 	.prcm_offs	  = OMAP3430ES2_SGX_MOD,
208 	.pwrsts		  = PWRSTS_ON,
209 	.pwrsts_logic_ret = PWRSTS_ON,
210 	.banks		  = 1,
211 	.pwrsts_mem_ret	  = {
212 		[0] = PWRSTS_ON, /* MEMRETSTATE */
213 	},
214 	.pwrsts_mem_on	  = {
215 		[0] = PWRSTS_ON,  /* MEMONSTATE */
216 	},
217 	.voltdm		  = { .name = "core" },
218 };
219 
220 static struct powerdomain cam_pwrdm = {
221 	.name		  = "cam_pwrdm",
222 	.prcm_offs	  = OMAP3430_CAM_MOD,
223 	.pwrsts		  = PWRSTS_OFF_RET_ON,
224 	.pwrsts_logic_ret = PWRSTS_RET,
225 	.banks		  = 1,
226 	.pwrsts_mem_ret	  = {
227 		[0] = PWRSTS_RET, /* MEMRETSTATE */
228 	},
229 	.pwrsts_mem_on	  = {
230 		[0] = PWRSTS_ON,  /* MEMONSTATE */
231 	},
232 	.voltdm		  = { .name = "core" },
233 };
234 
235 static struct powerdomain per_pwrdm = {
236 	.name		  = "per_pwrdm",
237 	.prcm_offs	  = OMAP3430_PER_MOD,
238 	.pwrsts		  = PWRSTS_OFF_RET_ON,
239 	.pwrsts_logic_ret = PWRSTS_OFF_RET,
240 	.banks		  = 1,
241 	.pwrsts_mem_ret	  = {
242 		[0] = PWRSTS_RET, /* MEMRETSTATE */
243 	},
244 	.pwrsts_mem_on	  = {
245 		[0] = PWRSTS_ON,  /* MEMONSTATE */
246 	},
247 	.voltdm		  = { .name = "core" },
248 };
249 
250 static struct powerdomain per_am35x_pwrdm = {
251 	.name		  = "per_pwrdm",
252 	.prcm_offs	  = OMAP3430_PER_MOD,
253 	.pwrsts		  = PWRSTS_ON,
254 	.pwrsts_logic_ret = PWRSTS_ON,
255 	.banks		  = 1,
256 	.pwrsts_mem_ret	  = {
257 		[0] = PWRSTS_ON, /* MEMRETSTATE */
258 	},
259 	.pwrsts_mem_on	  = {
260 		[0] = PWRSTS_ON,  /* MEMONSTATE */
261 	},
262 	.voltdm		  = { .name = "core" },
263 };
264 
265 static struct powerdomain emu_pwrdm = {
266 	.name		= "emu_pwrdm",
267 	.prcm_offs	= OMAP3430_EMU_MOD,
268 	.voltdm		  = { .name = "core" },
269 };
270 
271 static struct powerdomain neon_pwrdm = {
272 	.name		  = "neon_pwrdm",
273 	.prcm_offs	  = OMAP3430_NEON_MOD,
274 	.pwrsts		  = PWRSTS_OFF_RET_ON,
275 	.pwrsts_logic_ret = PWRSTS_RET,
276 	.voltdm		  = { .name = "mpu_iva" },
277 };
278 
279 static struct powerdomain neon_am35x_pwrdm = {
280 	.name		  = "neon_pwrdm",
281 	.prcm_offs	  = OMAP3430_NEON_MOD,
282 	.pwrsts		  = PWRSTS_ON,
283 	.pwrsts_logic_ret = PWRSTS_ON,
284 	.voltdm		  = { .name = "mpu_iva" },
285 };
286 
287 static struct powerdomain usbhost_pwrdm = {
288 	.name		  = "usbhost_pwrdm",
289 	.prcm_offs	  = OMAP3430ES2_USBHOST_MOD,
290 	.pwrsts		  = PWRSTS_OFF_RET_ON,
291 	.pwrsts_logic_ret = PWRSTS_RET,
292 	/*
293 	 * REVISIT: Enabling usb host save and restore mechanism seems to
294 	 * leave the usb host domain permanently in ACTIVE mode after
295 	 * changing the usb host power domain state from OFF to active once.
296 	 * Disabling for now.
297 	 */
298 	/*.flags	  = PWRDM_HAS_HDWR_SAR,*/ /* for USBHOST ctrlr only */
299 	.banks		  = 1,
300 	.pwrsts_mem_ret	  = {
301 		[0] = PWRSTS_RET, /* MEMRETSTATE */
302 	},
303 	.pwrsts_mem_on	  = {
304 		[0] = PWRSTS_ON,  /* MEMONSTATE */
305 	},
306 	.voltdm		  = { .name = "core" },
307 };
308 
309 static struct powerdomain dpll1_pwrdm = {
310 	.name		= "dpll1_pwrdm",
311 	.prcm_offs	= MPU_MOD,
312 	.voltdm		  = { .name = "mpu_iva" },
313 };
314 
315 static struct powerdomain dpll2_pwrdm = {
316 	.name		= "dpll2_pwrdm",
317 	.prcm_offs	= OMAP3430_IVA2_MOD,
318 	.voltdm		  = { .name = "mpu_iva" },
319 };
320 
321 static struct powerdomain dpll3_pwrdm = {
322 	.name		= "dpll3_pwrdm",
323 	.prcm_offs	= PLL_MOD,
324 	.voltdm		  = { .name = "core" },
325 };
326 
327 static struct powerdomain dpll4_pwrdm = {
328 	.name		= "dpll4_pwrdm",
329 	.prcm_offs	= PLL_MOD,
330 	.voltdm		  = { .name = "core" },
331 };
332 
333 static struct powerdomain dpll5_pwrdm = {
334 	.name		= "dpll5_pwrdm",
335 	.prcm_offs	= PLL_MOD,
336 	.voltdm		  = { .name = "core" },
337 };
338 
339 static struct powerdomain alwon_81xx_pwrdm = {
340 	.name		  = "alwon_pwrdm",
341 	.prcm_offs	  = TI81XX_PRM_ALWON_MOD,
342 	.pwrsts		  = PWRSTS_OFF_ON,
343 	.voltdm		  = { .name = "core" },
344 };
345 
346 static struct powerdomain device_81xx_pwrdm = {
347 	.name		  = "device_pwrdm",
348 	.prcm_offs	  = TI81XX_PRM_DEVICE_MOD,
349 	.voltdm		  = { .name = "core" },
350 };
351 
352 static struct powerdomain active_816x_pwrdm = {
353 	.name		  = "active_pwrdm",
354 	.prcm_offs	  = TI816X_PRM_ACTIVE_MOD,
355 	.pwrsts		  = PWRSTS_OFF_ON,
356 	.voltdm		  = { .name = "core" },
357 };
358 
359 static struct powerdomain default_816x_pwrdm = {
360 	.name		  = "default_pwrdm",
361 	.prcm_offs	  = TI81XX_PRM_DEFAULT_MOD,
362 	.pwrsts		  = PWRSTS_OFF_ON,
363 	.voltdm		  = { .name = "core" },
364 };
365 
366 static struct powerdomain ivahd0_816x_pwrdm = {
367 	.name		  = "ivahd0_pwrdm",
368 	.prcm_offs	  = TI816X_PRM_IVAHD0_MOD,
369 	.pwrsts		  = PWRSTS_OFF_ON,
370 	.voltdm		  = { .name = "mpu_iva" },
371 };
372 
373 static struct powerdomain ivahd1_816x_pwrdm = {
374 	.name		  = "ivahd1_pwrdm",
375 	.prcm_offs	  = TI816X_PRM_IVAHD1_MOD,
376 	.pwrsts		  = PWRSTS_OFF_ON,
377 	.voltdm		  = { .name = "mpu_iva" },
378 };
379 
380 static struct powerdomain ivahd2_816x_pwrdm = {
381 	.name		  = "ivahd2_pwrdm",
382 	.prcm_offs	  = TI816X_PRM_IVAHD2_MOD,
383 	.pwrsts		  = PWRSTS_OFF_ON,
384 	.voltdm		  = { .name = "mpu_iva" },
385 };
386 
387 static struct powerdomain sgx_816x_pwrdm = {
388 	.name		  = "sgx_pwrdm",
389 	.prcm_offs	  = TI816X_PRM_SGX_MOD,
390 	.pwrsts		  = PWRSTS_OFF_ON,
391 	.voltdm		  = { .name = "core" },
392 };
393 
394 /* As powerdomains are added or removed above, this list must also be changed */
395 static struct powerdomain *powerdomains_omap3430_common[] __initdata = {
396 	&wkup_omap2_pwrdm,
397 	&iva2_pwrdm,
398 	&mpu_3xxx_pwrdm,
399 	&neon_pwrdm,
400 	&cam_pwrdm,
401 	&dss_pwrdm,
402 	&per_pwrdm,
403 	&emu_pwrdm,
404 	&dpll1_pwrdm,
405 	&dpll2_pwrdm,
406 	&dpll3_pwrdm,
407 	&dpll4_pwrdm,
408 	NULL
409 };
410 
411 static struct powerdomain *powerdomains_omap3430es1[] __initdata = {
412 	&gfx_omap2_pwrdm,
413 	&core_3xxx_pre_es3_1_pwrdm,
414 	NULL
415 };
416 
417 /* also includes 3630ES1.0 */
418 static struct powerdomain *powerdomains_omap3430es2_es3_0[] __initdata = {
419 	&core_3xxx_pre_es3_1_pwrdm,
420 	&sgx_pwrdm,
421 	&usbhost_pwrdm,
422 	&dpll5_pwrdm,
423 	NULL
424 };
425 
426 /* also includes 3630ES1.1+ */
427 static struct powerdomain *powerdomains_omap3430es3_1plus[] __initdata = {
428 	&core_3xxx_es3_1_pwrdm,
429 	&sgx_pwrdm,
430 	&usbhost_pwrdm,
431 	&dpll5_pwrdm,
432 	NULL
433 };
434 
435 static struct powerdomain *powerdomains_am35x[] __initdata = {
436 	&wkup_omap2_pwrdm,
437 	&mpu_am35x_pwrdm,
438 	&neon_am35x_pwrdm,
439 	&core_am35x_pwrdm,
440 	&sgx_am35x_pwrdm,
441 	&dss_am35x_pwrdm,
442 	&per_am35x_pwrdm,
443 	&emu_pwrdm,
444 	&dpll1_pwrdm,
445 	&dpll3_pwrdm,
446 	&dpll4_pwrdm,
447 	&dpll5_pwrdm,
448 	NULL
449 };
450 
451 static struct powerdomain *powerdomains_ti81xx[] __initdata = {
452 	&alwon_81xx_pwrdm,
453 	&device_81xx_pwrdm,
454 	&active_816x_pwrdm,
455 	&default_816x_pwrdm,
456 	&ivahd0_816x_pwrdm,
457 	&ivahd1_816x_pwrdm,
458 	&ivahd2_816x_pwrdm,
459 	&sgx_816x_pwrdm,
460 	NULL
461 };
462 
463 void __init omap3xxx_powerdomains_init(void)
464 {
465 	unsigned int rev;
466 
467 	if (!cpu_is_omap34xx())
468 		return;
469 
470 	pwrdm_register_platform_funcs(&omap3_pwrdm_operations);
471 
472 	rev = omap_rev();
473 
474 	if (rev == AM35XX_REV_ES1_0 || rev == AM35XX_REV_ES1_1) {
475 		pwrdm_register_pwrdms(powerdomains_am35x);
476 	} else if (rev == TI8168_REV_ES1_0 || rev == TI8168_REV_ES1_1
477 			|| rev == TI8168_REV_ES2_0 || rev == TI8168_REV_ES2_1) {
478 		pwrdm_register_pwrdms(powerdomains_ti81xx);
479 	} else {
480 		pwrdm_register_pwrdms(powerdomains_omap3430_common);
481 
482 		switch (rev) {
483 		case OMAP3430_REV_ES1_0:
484 			pwrdm_register_pwrdms(powerdomains_omap3430es1);
485 			break;
486 		case OMAP3430_REV_ES2_0:
487 		case OMAP3430_REV_ES2_1:
488 		case OMAP3430_REV_ES3_0:
489 		case OMAP3630_REV_ES1_0:
490 			pwrdm_register_pwrdms(powerdomains_omap3430es2_es3_0);
491 			break;
492 		case OMAP3430_REV_ES3_1:
493 		case OMAP3430_REV_ES3_1_2:
494 		case OMAP3630_REV_ES1_1:
495 		case OMAP3630_REV_ES1_2:
496 			pwrdm_register_pwrdms(powerdomains_omap3430es3_1plus);
497 			break;
498 		default:
499 			WARN(1, "OMAP3 powerdomain init: unknown chip type\n");
500 		}
501 	}
502 
503 	pwrdm_complete_init();
504 }
505