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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 24a6bc010e7ce00a91c795562058044e9f9d5dc0 / . / arch / arm / mach-tegra / tegra124 / clock.c
blob: fc8bd194ddc9d7bb29f8c1503939c58f4bf47066 [file] [log] [blame]
Tom Warren52ef43b2014-01-24 12:46:15 -0700[diff] [blame]1/*
2 * (C) Copyright 2013
3 * NVIDIA Corporation <www.nvidia.com>
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8/* Tegra124 Clock control functions */
9
10#include <common.h>
11#include <asm/io.h>
12#include <asm/arch/clock.h>
13#include <asm/arch/sysctr.h>
14#include <asm/arch/tegra.h>
15#include <asm/arch-tegra/clk_rst.h>
16#include <asm/arch-tegra/timer.h>
17#include <div64.h>
18#include <fdtdec.h>
19
20/*
21 * Clock types that we can use as a source. The Tegra124 has muxes for the
22 * peripheral clocks, and in most cases there are four options for the clock
23 * source. This gives us a clock 'type' and exploits what commonality exists
24 * in the device.
25 *
26 * Letters are obvious, except for T which means CLK_M, and S which means the
27 * clock derived from 32KHz. Beware that CLK_M (also called OSC in the
28 * datasheet) and PLL_M are different things. The former is the basic
29 * clock supplied to the SOC from an external oscillator. The latter is the
30 * memory clock PLL.
31 *
32 * See definitions in clock_id in the header file.
33 */
34enum clock_type_id {
35 CLOCK_TYPE_AXPT, /* PLL_A, PLL_X, PLL_P, CLK_M */
36 CLOCK_TYPE_MCPA, /* and so on */
37 CLOCK_TYPE_MCPT,
38 CLOCK_TYPE_PCM,
39 CLOCK_TYPE_PCMT,
40 CLOCK_TYPE_PDCT,
41 CLOCK_TYPE_ACPT,
42 CLOCK_TYPE_ASPTE,
43 CLOCK_TYPE_PMDACD2T,
44 CLOCK_TYPE_PCST,
45
46 CLOCK_TYPE_PC2CC3M,
47 CLOCK_TYPE_PC2CC3S_T,
48 CLOCK_TYPE_PC2CC3M_T,
49 CLOCK_TYPE_PC2CC3M_T16, /* PC2CC3M_T, but w/16-bit divisor (I2C) */
50 CLOCK_TYPE_MC2CC3P_A,
51 CLOCK_TYPE_M,
52 CLOCK_TYPE_MCPTM2C2C3,
53 CLOCK_TYPE_PC2CC3T_S,
54 CLOCK_TYPE_AC2CC3P_TS2,
55
56 CLOCK_TYPE_COUNT,
57 CLOCK_TYPE_NONE = -1, /* invalid clock type */
58};
59
60enum {
61 CLOCK_MAX_MUX = 8 /* number of source options for each clock */
62};
63
64/*
65 * Clock source mux for each clock type. This just converts our enum into
66 * a list of mux sources for use by the code.
67 *
68 * Note:
69 * The extra column in each clock source array is used to store the mask
70 * bits in its register for the source.
71 */
72#define CLK(x) CLOCK_ID_ ## x
73static enum clock_id clock_source[CLOCK_TYPE_COUNT][CLOCK_MAX_MUX+1] = {
74 { CLK(AUDIO), CLK(XCPU), CLK(PERIPH), CLK(OSC),
75 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
76 MASK_BITS_31_30},
77 { CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(AUDIO),
78 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
79 MASK_BITS_31_30},
80 { CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(OSC),
81 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
82 MASK_BITS_31_30},
83 { CLK(PERIPH), CLK(CGENERAL), CLK(MEMORY), CLK(NONE),
84 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
85 MASK_BITS_31_30},
86 { CLK(PERIPH), CLK(CGENERAL), CLK(MEMORY), CLK(OSC),
87 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
88 MASK_BITS_31_30},
89 { CLK(PERIPH), CLK(DISPLAY), CLK(CGENERAL), CLK(OSC),
90 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
91 MASK_BITS_31_30},
92 { CLK(AUDIO), CLK(CGENERAL), CLK(PERIPH), CLK(OSC),
93 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
94 MASK_BITS_31_30},
95 { CLK(AUDIO), CLK(SFROM32KHZ), CLK(PERIPH), CLK(OSC),
96 CLK(EPCI), CLK(NONE), CLK(NONE), CLK(NONE),
97 MASK_BITS_31_29},
98 { CLK(PERIPH), CLK(MEMORY), CLK(DISPLAY), CLK(AUDIO),
99 CLK(CGENERAL), CLK(DISPLAY2), CLK(OSC), CLK(NONE),
100 MASK_BITS_31_29},
101 { CLK(PERIPH), CLK(CGENERAL), CLK(SFROM32KHZ), CLK(OSC),
102 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
103 MASK_BITS_31_28},
104
105 /* Additional clock types on Tegra114+ */
106 /* CLOCK_TYPE_PC2CC3M */
107 { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
108 CLK(MEMORY), CLK(NONE), CLK(NONE), CLK(NONE),
109 MASK_BITS_31_29},
110 /* CLOCK_TYPE_PC2CC3S_T */
111 { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
112 CLK(SFROM32KHZ), CLK(NONE), CLK(OSC), CLK(NONE),
113 MASK_BITS_31_29},
114 /* CLOCK_TYPE_PC2CC3M_T */
115 { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
116 CLK(MEMORY), CLK(NONE), CLK(OSC), CLK(NONE),
117 MASK_BITS_31_29},
118 /* CLOCK_TYPE_PC2CC3M_T, w/16-bit divisor (I2C) */
119 { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
120 CLK(MEMORY), CLK(NONE), CLK(OSC), CLK(NONE),
121 MASK_BITS_31_29},
122 /* CLOCK_TYPE_MC2CC3P_A */
123 { CLK(MEMORY), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
124 CLK(PERIPH), CLK(NONE), CLK(AUDIO), CLK(NONE),
125 MASK_BITS_31_29},
126 /* CLOCK_TYPE_M */
127 { CLK(MEMORY), CLK(NONE), CLK(NONE), CLK(NONE),
128 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
129 MASK_BITS_31_30},
130 /* CLOCK_TYPE_MCPTM2C2C3 */
131 { CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(OSC),
132 CLK(MEMORY2), CLK(CGENERAL2), CLK(CGENERAL3), CLK(NONE),
133 MASK_BITS_31_29},
134 /* CLOCK_TYPE_PC2CC3T_S */
135 { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
136 CLK(OSC), CLK(NONE), CLK(SFROM32KHZ), CLK(NONE),
137 MASK_BITS_31_29},
138 /* CLOCK_TYPE_AC2CC3P_TS2 */
139 { CLK(AUDIO), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
140 CLK(PERIPH), CLK(NONE), CLK(OSC), CLK(SRC2),
141 MASK_BITS_31_29},
142};
143
144/*
145 * Clock type for each peripheral clock source. We put the name in each
146 * record just so it is easy to match things up
147 */
148#define TYPE(name, type) type
149static enum clock_type_id clock_periph_type[PERIPHC_COUNT] = {
150 /* 0x00 */
151 TYPE(PERIPHC_I2S1, CLOCK_TYPE_AXPT),
152 TYPE(PERIPHC_I2S2, CLOCK_TYPE_AXPT),
153 TYPE(PERIPHC_SPDIF_OUT, CLOCK_TYPE_AXPT),
154 TYPE(PERIPHC_SPDIF_IN, CLOCK_TYPE_PC2CC3M),
155 TYPE(PERIPHC_PWM, CLOCK_TYPE_PC2CC3S_T),
156 TYPE(PERIPHC_05h, CLOCK_TYPE_NONE),
157 TYPE(PERIPHC_SBC2, CLOCK_TYPE_PC2CC3M_T),
158 TYPE(PERIPHC_SBC3, CLOCK_TYPE_PC2CC3M_T),
159
160 /* 0x08 */
161 TYPE(PERIPHC_08h, CLOCK_TYPE_NONE),
162 TYPE(PERIPHC_I2C1, CLOCK_TYPE_PC2CC3M_T16),
163 TYPE(PERIPHC_I2C5, CLOCK_TYPE_PC2CC3M_T16),
164 TYPE(PERIPHC_0bh, CLOCK_TYPE_NONE),
165 TYPE(PERIPHC_0ch, CLOCK_TYPE_NONE),
166 TYPE(PERIPHC_SBC1, CLOCK_TYPE_PC2CC3M_T),
167 TYPE(PERIPHC_DISP1, CLOCK_TYPE_PMDACD2T),
168 TYPE(PERIPHC_DISP2, CLOCK_TYPE_PMDACD2T),
169
170 /* 0x10 */
171 TYPE(PERIPHC_10h, CLOCK_TYPE_NONE),
172 TYPE(PERIPHC_11h, CLOCK_TYPE_NONE),
173 TYPE(PERIPHC_VI, CLOCK_TYPE_MC2CC3P_A),
174 TYPE(PERIPHC_13h, CLOCK_TYPE_NONE),
175 TYPE(PERIPHC_SDMMC1, CLOCK_TYPE_PC2CC3M_T),
176 TYPE(PERIPHC_SDMMC2, CLOCK_TYPE_PC2CC3M_T),
177 TYPE(PERIPHC_16h, CLOCK_TYPE_NONE),
178 TYPE(PERIPHC_17h, CLOCK_TYPE_NONE),
179
180 /* 0x18 */
181 TYPE(PERIPHC_18h, CLOCK_TYPE_NONE),
182 TYPE(PERIPHC_SDMMC4, CLOCK_TYPE_PC2CC3M_T),
183 TYPE(PERIPHC_VFIR, CLOCK_TYPE_PC2CC3M_T),
184 TYPE(PERIPHC_1Bh, CLOCK_TYPE_NONE),
185 TYPE(PERIPHC_1Ch, CLOCK_TYPE_NONE),
186 TYPE(PERIPHC_HSI, CLOCK_TYPE_PC2CC3M_T),
187 TYPE(PERIPHC_UART1, CLOCK_TYPE_PC2CC3M_T),
188 TYPE(PERIPHC_UART2, CLOCK_TYPE_PC2CC3M_T),
189
190 /* 0x20 */
191 TYPE(PERIPHC_HOST1X, CLOCK_TYPE_MC2CC3P_A),
192 TYPE(PERIPHC_21h, CLOCK_TYPE_NONE),
193 TYPE(PERIPHC_22h, CLOCK_TYPE_NONE),
194 TYPE(PERIPHC_HDMI, CLOCK_TYPE_PMDACD2T),
195 TYPE(PERIPHC_24h, CLOCK_TYPE_NONE),
196 TYPE(PERIPHC_25h, CLOCK_TYPE_NONE),
197 TYPE(PERIPHC_I2C2, CLOCK_TYPE_PC2CC3M_T16),
198 TYPE(PERIPHC_EMC, CLOCK_TYPE_MCPTM2C2C3),
199
200 /* 0x28 */
201 TYPE(PERIPHC_UART3, CLOCK_TYPE_PC2CC3M_T),
202 TYPE(PERIPHC_29h, CLOCK_TYPE_NONE),
203 TYPE(PERIPHC_VI_SENSOR, CLOCK_TYPE_MC2CC3P_A),
204 TYPE(PERIPHC_2bh, CLOCK_TYPE_NONE),
205 TYPE(PERIPHC_2ch, CLOCK_TYPE_NONE),
206 TYPE(PERIPHC_SBC4, CLOCK_TYPE_PC2CC3M_T),
207 TYPE(PERIPHC_I2C3, CLOCK_TYPE_PC2CC3M_T16),
208 TYPE(PERIPHC_SDMMC3, CLOCK_TYPE_PC2CC3M_T),
209
210 /* 0x30 */
211 TYPE(PERIPHC_UART4, CLOCK_TYPE_PC2CC3M_T),
212 TYPE(PERIPHC_UART5, CLOCK_TYPE_PC2CC3M_T),
213 TYPE(PERIPHC_VDE, CLOCK_TYPE_PC2CC3M_T),
214 TYPE(PERIPHC_OWR, CLOCK_TYPE_PC2CC3M_T),
215 TYPE(PERIPHC_NOR, CLOCK_TYPE_PC2CC3M_T),
216 TYPE(PERIPHC_CSITE, CLOCK_TYPE_PC2CC3M_T),
217 TYPE(PERIPHC_I2S0, CLOCK_TYPE_AXPT),
218 TYPE(PERIPHC_DTV, CLOCK_TYPE_NONE),
219
220 /* 0x38 */
221 TYPE(PERIPHC_38h, CLOCK_TYPE_NONE),
222 TYPE(PERIPHC_39h, CLOCK_TYPE_NONE),
223 TYPE(PERIPHC_3ah, CLOCK_TYPE_NONE),
224 TYPE(PERIPHC_3bh, CLOCK_TYPE_NONE),
225 TYPE(PERIPHC_MSENC, CLOCK_TYPE_MC2CC3P_A),
226 TYPE(PERIPHC_TSEC, CLOCK_TYPE_PC2CC3M_T),
227 TYPE(PERIPHC_3eh, CLOCK_TYPE_NONE),
228 TYPE(PERIPHC_OSC, CLOCK_TYPE_NONE),
229
230 /* 0x40 */
231 TYPE(PERIPHC_40h, CLOCK_TYPE_NONE), /* start with 0x3b0 */
232 TYPE(PERIPHC_MSELECT, CLOCK_TYPE_PC2CC3M_T),
233 TYPE(PERIPHC_TSENSOR, CLOCK_TYPE_PC2CC3T_S),
234 TYPE(PERIPHC_I2S3, CLOCK_TYPE_AXPT),
235 TYPE(PERIPHC_I2S4, CLOCK_TYPE_AXPT),
236 TYPE(PERIPHC_I2C4, CLOCK_TYPE_PC2CC3M_T16),
237 TYPE(PERIPHC_SBC5, CLOCK_TYPE_PC2CC3M_T),
238 TYPE(PERIPHC_SBC6, CLOCK_TYPE_PC2CC3M_T),
239
240 /* 0x48 */
241 TYPE(PERIPHC_AUDIO, CLOCK_TYPE_AC2CC3P_TS2),
242 TYPE(PERIPHC_49h, CLOCK_TYPE_NONE),
243 TYPE(PERIPHC_DAM0, CLOCK_TYPE_AC2CC3P_TS2),
244 TYPE(PERIPHC_DAM1, CLOCK_TYPE_AC2CC3P_TS2),
245 TYPE(PERIPHC_DAM2, CLOCK_TYPE_AC2CC3P_TS2),
246 TYPE(PERIPHC_HDA2CODEC2X, CLOCK_TYPE_PC2CC3M_T),
247 TYPE(PERIPHC_ACTMON, CLOCK_TYPE_PC2CC3S_T),
248 TYPE(PERIPHC_EXTPERIPH1, CLOCK_TYPE_ASPTE),
249
250 /* 0x50 */
251 TYPE(PERIPHC_EXTPERIPH2, CLOCK_TYPE_ASPTE),
252 TYPE(PERIPHC_EXTPERIPH3, CLOCK_TYPE_ASPTE),
253 TYPE(PERIPHC_52h, CLOCK_TYPE_NONE),
254 TYPE(PERIPHC_I2CSLOW, CLOCK_TYPE_PC2CC3S_T),
255 TYPE(PERIPHC_SYS, CLOCK_TYPE_NONE),
256 TYPE(PERIPHC_55h, CLOCK_TYPE_NONE),
257 TYPE(PERIPHC_56h, CLOCK_TYPE_NONE),
258 TYPE(PERIPHC_57h, CLOCK_TYPE_NONE),
259
260 /* 0x58 */
261 TYPE(PERIPHC_58h, CLOCK_TYPE_NONE),
262 TYPE(PERIPHC_59h, CLOCK_TYPE_NONE),
263 TYPE(PERIPHC_5ah, CLOCK_TYPE_NONE),
264 TYPE(PERIPHC_5bh, CLOCK_TYPE_NONE),
265 TYPE(PERIPHC_SATAOOB, CLOCK_TYPE_PCMT),
266 TYPE(PERIPHC_SATA, CLOCK_TYPE_PCMT),
267 TYPE(PERIPHC_HDA, CLOCK_TYPE_PC2CC3M_T),
268 TYPE(PERIPHC_5fh, CLOCK_TYPE_NONE),
269
270 /* 0x60 */
271 TYPE(PERIPHC_XUSB_CORE_HOST, CLOCK_TYPE_NONE),
272 TYPE(PERIPHC_XUSB_FALCON, CLOCK_TYPE_NONE),
273 TYPE(PERIPHC_XUSB_FS, CLOCK_TYPE_NONE),
274 TYPE(PERIPHC_XUSB_CORE_DEV, CLOCK_TYPE_NONE),
275 TYPE(PERIPHC_XUSB_SS, CLOCK_TYPE_NONE),
276 TYPE(PERIPHC_CILAB, CLOCK_TYPE_NONE),
277 TYPE(PERIPHC_CILCD, CLOCK_TYPE_NONE),
278 TYPE(PERIPHC_CILE, CLOCK_TYPE_NONE),
279
280 /* 0x68 */
281 TYPE(PERIPHC_DSIA_LP, CLOCK_TYPE_NONE),
282 TYPE(PERIPHC_DSIB_LP, CLOCK_TYPE_NONE),
283 TYPE(PERIPHC_ENTROPY, CLOCK_TYPE_NONE),
284 TYPE(PERIPHC_DVFS_REF, CLOCK_TYPE_NONE),
285 TYPE(PERIPHC_DVFS_SOC, CLOCK_TYPE_NONE),
286 TYPE(PERIPHC_TRACECLKIN, CLOCK_TYPE_NONE),
287 TYPE(PERIPHC_ADX0, CLOCK_TYPE_NONE),
288 TYPE(PERIPHC_AMX0, CLOCK_TYPE_NONE),
289
290 /* 0x70 */
291 TYPE(PERIPHC_EMC_LATENCY, CLOCK_TYPE_NONE),
292 TYPE(PERIPHC_SOC_THERM, CLOCK_TYPE_NONE),
293 TYPE(PERIPHC_72h, CLOCK_TYPE_NONE),
294 TYPE(PERIPHC_73h, CLOCK_TYPE_NONE),
295 TYPE(PERIPHC_74h, CLOCK_TYPE_NONE),
296 TYPE(PERIPHC_75h, CLOCK_TYPE_NONE),
297 TYPE(PERIPHC_VI_SENSOR2, CLOCK_TYPE_NONE),
298 TYPE(PERIPHC_I2C6, CLOCK_TYPE_PC2CC3M_T16),
299
300 /* 0x78 */
301 TYPE(PERIPHC_78h, CLOCK_TYPE_NONE),
302 TYPE(PERIPHC_EMC_DLL, CLOCK_TYPE_MCPTM2C2C3),
303 TYPE(PERIPHC_HDMI_AUDIO, CLOCK_TYPE_NONE),
304 TYPE(PERIPHC_CLK72MHZ, CLOCK_TYPE_NONE),
305 TYPE(PERIPHC_ADX1, CLOCK_TYPE_AC2CC3P_TS2),
306 TYPE(PERIPHC_AMX1, CLOCK_TYPE_AC2CC3P_TS2),
307 TYPE(PERIPHC_VIC, CLOCK_TYPE_NONE),
308 TYPE(PERIPHC_7Fh, CLOCK_TYPE_NONE),
309};
310
311/*
312 * This array translates a periph_id to a periphc_internal_id
313 *
314 * Not present/matched up:
315 * uint vi_sensor; _VI_SENSOR_0, 0x1A8
316 * SPDIF - which is both 0x08 and 0x0c
317 *
318 */
319#define NONE(name) (-1)
320#define OFFSET(name, value) PERIPHC_ ## name
321static s8 periph_id_to_internal_id[PERIPH_ID_COUNT] = {
322 /* Low word: 31:0 */
323 NONE(CPU),
324 NONE(COP),
325 NONE(TRIGSYS),
326 NONE(ISPB),
327 NONE(RESERVED4),
328 NONE(TMR),
329 PERIPHC_UART1,
330 PERIPHC_UART2, /* and vfir 0x68 */
331
332 /* 8 */
333 NONE(GPIO),
334 PERIPHC_SDMMC2,
335 PERIPHC_SPDIF_IN,
336 PERIPHC_I2S1,
337 PERIPHC_I2C1,
338 NONE(RESERVED13),
339 PERIPHC_SDMMC1,
340 PERIPHC_SDMMC4,
341
342 /* 16 */
343 NONE(TCW),
344 PERIPHC_PWM,
345 PERIPHC_I2S2,
346 NONE(RESERVED19),
347 PERIPHC_VI,
348 NONE(RESERVED21),
349 NONE(USBD),
350 NONE(ISP),
351
352 /* 24 */
353 NONE(RESERVED24),
354 NONE(RESERVED25),
355 PERIPHC_DISP2,
356 PERIPHC_DISP1,
357 PERIPHC_HOST1X,
358 NONE(VCP),
359 PERIPHC_I2S0,
360 NONE(CACHE2),
361
362 /* Middle word: 63:32 */
363 NONE(MEM),
364 NONE(AHBDMA),
365 NONE(APBDMA),
366 NONE(RESERVED35),
367 NONE(RESERVED36),
368 NONE(STAT_MON),
369 NONE(RESERVED38),
370 NONE(FUSE),
371
372 /* 40 */
373 NONE(KFUSE),
374 PERIPHC_SBC1, /* SBCx = SPIx */
375 PERIPHC_NOR,
376 NONE(RESERVED43),
377 PERIPHC_SBC2,
378 NONE(XIO),
379 PERIPHC_SBC3,
380 PERIPHC_I2C5,
381
382 /* 48 */
383 NONE(DSI),
384 NONE(RESERVED49),
385 PERIPHC_HSI,
386 PERIPHC_HDMI,
387 NONE(CSI),
388 NONE(RESERVED53),
389 PERIPHC_I2C2,
390 PERIPHC_UART3,
391
392 /* 56 */
393 NONE(MIPI_CAL),
394 PERIPHC_EMC,
395 NONE(USB2),
396 NONE(USB3),
397 NONE(RESERVED60),
398 PERIPHC_VDE,
399 NONE(BSEA),
400 NONE(BSEV),
401
402 /* Upper word 95:64 */
403 NONE(RESERVED64),
404 PERIPHC_UART4,
405 PERIPHC_UART5,
406 PERIPHC_I2C3,
407 PERIPHC_SBC4,
408 PERIPHC_SDMMC3,
409 NONE(PCIE),
410 PERIPHC_OWR,
411
412 /* 72 */
413 NONE(AFI),
414 PERIPHC_CSITE,
415 NONE(PCIEXCLK),
416 NONE(AVPUCQ),
417 NONE(LA),
418 NONE(TRACECLKIN),
419 NONE(SOC_THERM),
420 NONE(DTV),
421
422 /* 80 */
423 NONE(RESERVED80),
424 PERIPHC_I2CSLOW,
425 NONE(DSIB),
426 PERIPHC_TSEC,
427 NONE(RESERVED84),
428 NONE(RESERVED85),
429 NONE(RESERVED86),
430 NONE(EMUCIF),
431
432 /* 88 */
433 NONE(RESERVED88),
434 NONE(XUSB_HOST),
435 NONE(RESERVED90),
436 PERIPHC_MSENC,
437 NONE(RESERVED92),
438 NONE(RESERVED93),
439 NONE(RESERVED94),
440 NONE(XUSB_DEV),
441
442 /* V word: 31:0 */
443 NONE(CPUG),
444 NONE(CPULP),
445 NONE(V_RESERVED2),
446 PERIPHC_MSELECT,
447 NONE(V_RESERVED4),
448 PERIPHC_I2S3,
449 PERIPHC_I2S4,
450 PERIPHC_I2C4,
451
452 /* 104 */
453 PERIPHC_SBC5,
454 PERIPHC_SBC6,
455 PERIPHC_AUDIO,
456 NONE(APBIF),
457 PERIPHC_DAM0,
458 PERIPHC_DAM1,
459 PERIPHC_DAM2,
460 PERIPHC_HDA2CODEC2X,
461
462 /* 112 */
463 NONE(ATOMICS),
464 NONE(V_RESERVED17),
465 NONE(V_RESERVED18),
466 NONE(V_RESERVED19),
467 NONE(V_RESERVED20),
468 NONE(V_RESERVED21),
469 NONE(V_RESERVED22),
470 PERIPHC_ACTMON,
471
472 /* 120 */
473 NONE(EXTPERIPH1),
474 NONE(EXTPERIPH2),
475 NONE(EXTPERIPH3),
476 NONE(OOB),
477 PERIPHC_SATA,
478 PERIPHC_HDA,
479 NONE(TZRAM),
480 NONE(SE),
481
482 /* W word: 31:0 */
483 NONE(HDA2HDMICODEC),
484 NONE(SATACOLD),
485 NONE(W_RESERVED2),
486 NONE(W_RESERVED3),
487 NONE(W_RESERVED4),
488 NONE(W_RESERVED5),
489 NONE(W_RESERVED6),
490 NONE(W_RESERVED7),
491
492 /* 136 */
493 NONE(CEC),
494 NONE(W_RESERVED9),
495 NONE(W_RESERVED10),
496 NONE(W_RESERVED11),
497 NONE(W_RESERVED12),
498 NONE(W_RESERVED13),
499 NONE(XUSB_PADCTL),
500 NONE(W_RESERVED15),
501
502 /* 144 */
503 NONE(W_RESERVED16),
504 NONE(W_RESERVED17),
505 NONE(W_RESERVED18),
506 NONE(W_RESERVED19),
507 NONE(W_RESERVED20),
508 NONE(ENTROPY),
509 NONE(DDS),
510 NONE(W_RESERVED23),
511
512 /* 152 */
513 NONE(DP2),
514 NONE(AMX0),
515 NONE(ADX0),
516 NONE(DVFS),
517 NONE(XUSB_SS),
518 NONE(W_RESERVED29),
519 NONE(W_RESERVED30),
520 NONE(W_RESERVED31),
521
522 /* X word: 31:0 */
523 NONE(SPARE),
524 NONE(X_RESERVED1),
525 NONE(X_RESERVED2),
526 NONE(X_RESERVED3),
527 NONE(CAM_MCLK),
528 NONE(CAM_MCLK2),
529 PERIPHC_I2C6,
530 NONE(X_RESERVED7),
531
532 /* 168 */
533 NONE(X_RESERVED8),
534 NONE(X_RESERVED9),
535 NONE(X_RESERVED10),
536 NONE(VIM2_CLK),
537 NONE(X_RESERVED12),
538 NONE(X_RESERVED13),
539 NONE(EMC_DLL),
540 NONE(X_RESERVED15),
541
542 /* 176 */
543 NONE(HDMI_AUDIO),
544 NONE(CLK72MHZ),
545 NONE(VIC),
546 NONE(X_RESERVED19),
547 NONE(ADX1),
548 NONE(DPAUX),
549 NONE(SOR0),
550 NONE(X_RESERVED23),
551
552 /* 184 */
553 NONE(GPU),
554 NONE(AMX1),
555 NONE(X_RESERVED26),
556 NONE(X_RESERVED27),
557 NONE(X_RESERVED28),
558 NONE(X_RESERVED29),
559 NONE(X_RESERVED30),
560 NONE(X_RESERVED31),
561};
562
563/*
564 * Get the oscillator frequency, from the corresponding hardware configuration
565 * field. Note that Tegra30+ support 3 new higher freqs, but we map back
566 * to the old T20 freqs. Support for the higher oscillators is TBD.
567 */
568enum clock_osc_freq clock_get_osc_freq(void)
569{
570 struct clk_rst_ctlr *clkrst =
571 (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
572 u32 reg;
573
574 reg = readl(&clkrst->crc_osc_ctrl);
575 reg = (reg & OSC_FREQ_MASK) >> OSC_FREQ_SHIFT;
576
577 if (reg & 1) /* one of the newer freqs */
578 printf("Warning: OSC_FREQ is unsupported! (%d)\n", reg);
579
580 return reg >> 2; /* Map to most common (T20) freqs */
581}
582
583/* Returns a pointer to the clock source register for a peripheral */
584u32 *get_periph_source_reg(enum periph_id periph_id)
585{
586 struct clk_rst_ctlr *clkrst =
587 (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
588 enum periphc_internal_id internal_id;
589
590 /* Coresight is a special case */
591 if (periph_id == PERIPH_ID_CSI)
592 return &clkrst->crc_clk_src[PERIPH_ID_CSI+1];
593
594 assert(periph_id >= PERIPH_ID_FIRST && periph_id < PERIPH_ID_COUNT);
595 internal_id = periph_id_to_internal_id[periph_id];
596 assert(internal_id != -1);
597 if (internal_id >= PERIPHC_VW_FIRST) {
598 internal_id -= PERIPHC_VW_FIRST;
599 return &clkrst->crc_clk_src_vw[internal_id];
600 } else {
601 return &clkrst->crc_clk_src[internal_id];
602 }
603}
604
605/**
606 * Given a peripheral ID and the required source clock, this returns which
607 * value should be programmed into the source mux for that peripheral.
608 *
609 * There is special code here to handle the one source type with 5 sources.
610 *
611 * @param periph_id peripheral to start
612 * @param source PLL id of required parent clock
613 * @param mux_bits Set to number of bits in mux register: 2 or 4
614 * @param divider_bits Set to number of divider bits (8 or 16)
615 * @return mux value (0-4, or -1 if not found)
616 */
617int get_periph_clock_source(enum periph_id periph_id,
618 enum clock_id parent, int *mux_bits, int *divider_bits)
619{
620 enum clock_type_id type;
621 enum periphc_internal_id internal_id;
622 int mux;
623
624 assert(clock_periph_id_isvalid(periph_id));
625
626 internal_id = periph_id_to_internal_id[periph_id];
627 assert(periphc_internal_id_isvalid(internal_id));
628
629 type = clock_periph_type[internal_id];
630 assert(clock_type_id_isvalid(type));
631
632 *mux_bits = clock_source[type][CLOCK_MAX_MUX];
633
634 if (type == CLOCK_TYPE_PC2CC3M_T16)
635 *divider_bits = 16;
636 else
637 *divider_bits = 8;
638
639 for (mux = 0; mux < CLOCK_MAX_MUX; mux++)
640 if (clock_source[type][mux] == parent)
641 return mux;
642
643 /* if we get here, either us or the caller has made a mistake */
644 printf("Caller requested bad clock: periph=%d, parent=%d\n", periph_id,
645 parent);
646 return -1;
647}
648
649void clock_set_enable(enum periph_id periph_id, int enable)
650{
651 struct clk_rst_ctlr *clkrst =
652 (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
653 u32 *clk;
654 u32 reg;
655
656 /* Enable/disable the clock to this peripheral */
657 assert(clock_periph_id_isvalid(periph_id));
658 if ((int)periph_id < (int)PERIPH_ID_VW_FIRST)
659 clk = &clkrst->crc_clk_out_enb[PERIPH_REG(periph_id)];
660 else
661 clk = &clkrst->crc_clk_out_enb_vw[PERIPH_REG(periph_id)];
662 reg = readl(clk);
663 if (enable)
664 reg |= PERIPH_MASK(periph_id);
665 else
666 reg &= ~PERIPH_MASK(periph_id);
667 writel(reg, clk);
668}
669
670void reset_set_enable(enum periph_id periph_id, int enable)
671{
672 struct clk_rst_ctlr *clkrst =
673 (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
674 u32 *reset;
675 u32 reg;
676
677 /* Enable/disable reset to the peripheral */
678 assert(clock_periph_id_isvalid(periph_id));
679 if (periph_id < PERIPH_ID_VW_FIRST)
680 reset = &clkrst->crc_rst_dev[PERIPH_REG(periph_id)];
681 else
682 reset = &clkrst->crc_rst_dev_vw[PERIPH_REG(periph_id)];
683 reg = readl(reset);
684 if (enable)
685 reg |= PERIPH_MASK(periph_id);
686 else
687 reg &= ~PERIPH_MASK(periph_id);
688 writel(reg, reset);
689}
690
691#ifdef CONFIG_OF_CONTROL
692/*
693 * Convert a device tree clock ID to our peripheral ID. They are mostly
694 * the same but we are very cautious so we check that a valid clock ID is
695 * provided.
696 *
697 * @param clk_id Clock ID according to tegra124 device tree binding
698 * @return peripheral ID, or PERIPH_ID_NONE if the clock ID is invalid
699 */
700enum periph_id clk_id_to_periph_id(int clk_id)
701{
702 if (clk_id > PERIPH_ID_COUNT)
703 return PERIPH_ID_NONE;
704
705 switch (clk_id) {
706 case PERIPH_ID_RESERVED4:
707 case PERIPH_ID_RESERVED25:
708 case PERIPH_ID_RESERVED35:
709 case PERIPH_ID_RESERVED36:
710 case PERIPH_ID_RESERVED38:
711 case PERIPH_ID_RESERVED43:
712 case PERIPH_ID_RESERVED49:
713 case PERIPH_ID_RESERVED53:
714 case PERIPH_ID_RESERVED64:
715 case PERIPH_ID_RESERVED84:
716 case PERIPH_ID_RESERVED85:
717 case PERIPH_ID_RESERVED86:
718 case PERIPH_ID_RESERVED88:
719 case PERIPH_ID_RESERVED90:
720 case PERIPH_ID_RESERVED92:
721 case PERIPH_ID_RESERVED93:
722 case PERIPH_ID_RESERVED94:
723 case PERIPH_ID_V_RESERVED2:
724 case PERIPH_ID_V_RESERVED4:
725 case PERIPH_ID_V_RESERVED17:
726 case PERIPH_ID_V_RESERVED18:
727 case PERIPH_ID_V_RESERVED19:
728 case PERIPH_ID_V_RESERVED20:
729 case PERIPH_ID_V_RESERVED21:
730 case PERIPH_ID_V_RESERVED22:
731 case PERIPH_ID_W_RESERVED2:
732 case PERIPH_ID_W_RESERVED3:
733 case PERIPH_ID_W_RESERVED4:
734 case PERIPH_ID_W_RESERVED5:
735 case PERIPH_ID_W_RESERVED6:
736 case PERIPH_ID_W_RESERVED7:
737 case PERIPH_ID_W_RESERVED9:
738 case PERIPH_ID_W_RESERVED10:
739 case PERIPH_ID_W_RESERVED11:
740 case PERIPH_ID_W_RESERVED12:
741 case PERIPH_ID_W_RESERVED13:
742 case PERIPH_ID_W_RESERVED15:
743 case PERIPH_ID_W_RESERVED16:
744 case PERIPH_ID_W_RESERVED17:
745 case PERIPH_ID_W_RESERVED18:
746 case PERIPH_ID_W_RESERVED19:
747 case PERIPH_ID_W_RESERVED20:
748 case PERIPH_ID_W_RESERVED23:
749 case PERIPH_ID_W_RESERVED29:
750 case PERIPH_ID_W_RESERVED30:
751 case PERIPH_ID_W_RESERVED31:
752 return PERIPH_ID_NONE;
753 default:
754 return clk_id;
755 }
756}
757#endif /* CONFIG_OF_CONTROL */
758
759void clock_early_init(void)
760{
761 struct clk_rst_ctlr *clkrst =
762 (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
763
764 tegra30_set_up_pllp();
765
766 /*
767 * PLLC output frequency set to 600Mhz
768 * PLLD output frequency set to 925Mhz
769 */
770 switch (clock_get_osc_freq()) {
771 case CLOCK_OSC_FREQ_12_0: /* OSC is 12Mhz */
772 clock_set_rate(CLOCK_ID_CGENERAL, 600, 12, 0, 8);
773 clock_set_rate(CLOCK_ID_DISPLAY, 925, 12, 0, 12);
774 break;
775
776 case CLOCK_OSC_FREQ_26_0: /* OSC is 26Mhz */
777 clock_set_rate(CLOCK_ID_CGENERAL, 600, 26, 0, 8);
778 clock_set_rate(CLOCK_ID_DISPLAY, 925, 26, 0, 12);
779 break;
780
781 case CLOCK_OSC_FREQ_13_0: /* OSC is 13Mhz */
782 clock_set_rate(CLOCK_ID_CGENERAL, 600, 13, 0, 8);
783 clock_set_rate(CLOCK_ID_DISPLAY, 925, 13, 0, 12);
784 break;
785 case CLOCK_OSC_FREQ_19_2:
786 default:
787 /*
788 * These are not supported. It is too early to print a
789 * message and the UART likely won't work anyway due to the
790 * oscillator being wrong.
791 */
792 break;
793 }
794
795 /* PLLC_MISC2: Set dynramp_stepA/B. MISC2 maps to pll_out[1] */
796 writel(0x00561600, &clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_out[1]);
797
798 /* PLLC_MISC: Set LOCK_ENABLE */
799 writel(0x01000000, &clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_misc);
800 udelay(2);
801
802 /* PLLD_MISC: Set CLKENABLE, CPCON 12, LFCON 1 */
803 writel(0x40000C10, &clkrst->crc_pll[CLOCK_ID_DISPLAY].pll_misc);
804 udelay(2);
805}
806
807void arch_timer_init(void)
808{
809 struct sysctr_ctlr *sysctr = (struct sysctr_ctlr *)NV_PA_TSC_BASE;
810 u32 freq, val;
811
812 freq = clock_get_rate(CLOCK_ID_OSC);
813 debug("%s: osc freq is %dHz [0x%08X]\n", __func__, freq, freq);
814
815 /* ARM CNTFRQ */
816 asm("mcr p15, 0, %0, c14, c0, 0\n" : : "r" (freq));
817
818 /* Only Tegra114+ has the System Counter regs */
819 debug("%s: setting CNTFID0 to 0x%08X\n", __func__, freq);
820 writel(freq, &sysctr->cntfid0);
821
822 val = readl(&sysctr->cntcr);
823 val |= TSC_CNTCR_ENABLE | TSC_CNTCR_HDBG;
824 writel(val, &sysctr->cntcr);
825 debug("%s: TSC CNTCR = 0x%08X\n", __func__, val);
826}
Thierry Redinga7230742014-12-09 22:25:06 -0700[diff] [blame]827
828#define PLLE_SS_CNTL 0x68
829#define PLLE_SS_CNTL_SSCINCINTR(x) (((x) & 0x3f) << 24)
830#define PLLE_SS_CNTL_SSCINC(x) (((x) & 0xff) << 16)
831#define PLLE_SS_CNTL_SSCINVERT (1 << 15)
832#define PLLE_SS_CNTL_SSCCENTER (1 << 14)
833#define PLLE_SS_CNTL_SSCBYP (1 << 12)
834#define PLLE_SS_CNTL_INTERP_RESET (1 << 11)
835#define PLLE_SS_CNTL_BYPASS_SS (1 << 10)
836#define PLLE_SS_CNTL_SSCMAX(x) (((x) & 0x1ff) << 0)
837
838#define PLLE_BASE 0x0e8
839#define PLLE_BASE_ENABLE (1 << 30)
840#define PLLE_BASE_LOCK_OVERRIDE (1 << 29)
841#define PLLE_BASE_PLDIV_CML(x) (((x) & 0xf) << 24)
842#define PLLE_BASE_NDIV(x) (((x) & 0xff) << 8)
843#define PLLE_BASE_MDIV(x) (((x) & 0xff) << 0)
844
845#define PLLE_MISC 0x0ec
846#define PLLE_MISC_IDDQ_SWCTL (1 << 14)
847#define PLLE_MISC_IDDQ_OVERRIDE (1 << 13)
848#define PLLE_MISC_LOCK_ENABLE (1 << 9)
849#define PLLE_MISC_PTS (1 << 8)
850#define PLLE_MISC_VREG_BG_CTRL(x) (((x) & 0x3) << 4)
851#define PLLE_MISC_VREG_CTRL(x) (((x) & 0x3) << 2)
852
853#define PLLE_AUX 0x48c
854#define PLLE_AUX_SEQ_ENABLE (1 << 24)
855#define PLLE_AUX_ENABLE_SWCTL (1 << 4)
856
857int tegra_plle_enable(void)
858{
859 unsigned int m = 1, n = 200, cpcon = 13;
860 u32 value;
861
862 value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE);
863 value &= ~PLLE_BASE_LOCK_OVERRIDE;
864 writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE);
865
866 value = readl(NV_PA_CLK_RST_BASE + PLLE_AUX);
867 value |= PLLE_AUX_ENABLE_SWCTL;
868 value &= ~PLLE_AUX_SEQ_ENABLE;
869 writel(value, NV_PA_CLK_RST_BASE + PLLE_AUX);
870
871 udelay(1);
872
873 value = readl(NV_PA_CLK_RST_BASE + PLLE_MISC);
874 value |= PLLE_MISC_IDDQ_SWCTL;
875 value &= ~PLLE_MISC_IDDQ_OVERRIDE;
876 value |= PLLE_MISC_LOCK_ENABLE;
877 value |= PLLE_MISC_PTS;
878 value |= PLLE_MISC_VREG_BG_CTRL(3);
879 value |= PLLE_MISC_VREG_CTRL(2);
880 writel(value, NV_PA_CLK_RST_BASE + PLLE_MISC);
881
882 udelay(5);
883
884 value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
885 value |= PLLE_SS_CNTL_SSCBYP | PLLE_SS_CNTL_INTERP_RESET |
886 PLLE_SS_CNTL_BYPASS_SS;
887 writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
888
889 value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE);
890 value &= ~PLLE_BASE_PLDIV_CML(0xf);
891 value &= ~PLLE_BASE_NDIV(0xff);
892 value &= ~PLLE_BASE_MDIV(0xff);
893 value |= PLLE_BASE_PLDIV_CML(cpcon);
894 value |= PLLE_BASE_NDIV(n);
895 value |= PLLE_BASE_MDIV(m);
896 writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE);
897
898 udelay(1);
899
900 value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE);
901 value |= PLLE_BASE_ENABLE;
902 writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE);
903
904 /* wait for lock */
905 udelay(300);
906
907 value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
908 value &= ~PLLE_SS_CNTL_SSCINVERT;
909 value &= ~PLLE_SS_CNTL_SSCCENTER;
910
911 value &= ~PLLE_SS_CNTL_SSCINCINTR(0x3f);
912 value &= ~PLLE_SS_CNTL_SSCINC(0xff);
913 value &= ~PLLE_SS_CNTL_SSCMAX(0x1ff);
914
915 value |= PLLE_SS_CNTL_SSCINCINTR(0x20);
916 value |= PLLE_SS_CNTL_SSCINC(0x01);
917 value |= PLLE_SS_CNTL_SSCMAX(0x25);
918
919 writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
920
921 value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
922 value &= ~PLLE_SS_CNTL_SSCBYP;
923 value &= ~PLLE_SS_CNTL_BYPASS_SS;
924 writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
925
926 udelay(1);
927
928 value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
929 value &= ~PLLE_SS_CNTL_INTERP_RESET;
930 writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
931
932 udelay(1);
933
934 return 0;
935}