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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 0fcb9f07a1d086fc6951c08d2fc1cf6048bd54e2 / . / arch / arm / mach-tegra / tegra210 / clock.c
blob: f0052e7934a13b5fbea4b699266694357cf0d1ba [file] [log] [blame]
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1/*
2 * (C) Copyright 2013-2015
3 * NVIDIA Corporation <www.nvidia.com>
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8/* Tegra210 Clock control functions */
9
10#include <common.h>
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]11#include <errno.h>
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]12#include <asm/io.h>
13#include <asm/arch/clock.h>
14#include <asm/arch/sysctr.h>
15#include <asm/arch/tegra.h>
16#include <asm/arch-tegra/clk_rst.h>
17#include <asm/arch-tegra/timer.h>
18#include <div64.h>
19#include <fdtdec.h>
20
21/*
22 * Clock types that we can use as a source. The Tegra210 has muxes for the
23 * peripheral clocks, and in most cases there are four options for the clock
24 * source. This gives us a clock 'type' and exploits what commonality exists
25 * in the device.
26 *
27 * Letters are obvious, except for T which means CLK_M, and S which means the
28 * clock derived from 32KHz. Beware that CLK_M (also called OSC in the
29 * datasheet) and PLL_M are different things. The former is the basic
30 * clock supplied to the SOC from an external oscillator. The latter is the
31 * memory clock PLL.
32 *
33 * See definitions in clock_id in the header file.
34 */
35enum clock_type_id {
36 CLOCK_TYPE_AXPT, /* PLL_A, PLL_X, PLL_P, CLK_M */
37 CLOCK_TYPE_MCPA, /* and so on */
38 CLOCK_TYPE_MCPT,
39 CLOCK_TYPE_PCM,
40 CLOCK_TYPE_PCMT,
41 CLOCK_TYPE_PDCT,
42 CLOCK_TYPE_ACPT,
43 CLOCK_TYPE_ASPTE,
44 CLOCK_TYPE_PMDACD2T,
45 CLOCK_TYPE_PCST,
Simon Glass5a30cee2015-08-10 07:14:36 -0600[diff] [blame]46 CLOCK_TYPE_DP,
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]47
48 CLOCK_TYPE_PC2CC3M,
49 CLOCK_TYPE_PC2CC3S_T,
50 CLOCK_TYPE_PC2CC3M_T,
51 CLOCK_TYPE_PC2CC3M_T16, /* PC2CC3M_T, but w/16-bit divisor (I2C) */
52 CLOCK_TYPE_MC2CC3P_A,
53 CLOCK_TYPE_M,
54 CLOCK_TYPE_MCPTM2C2C3,
55 CLOCK_TYPE_PC2CC3T_S,
56 CLOCK_TYPE_AC2CC3P_TS2,
57 CLOCK_TYPE_PC01C00_C42C41TC40,
58
59 CLOCK_TYPE_COUNT,
60 CLOCK_TYPE_NONE = -1, /* invalid clock type */
61};
62
63enum {
64 CLOCK_MAX_MUX = 8 /* number of source options for each clock */
65};
66
67/*
68 * Clock source mux for each clock type. This just converts our enum into
69 * a list of mux sources for use by the code.
70 *
71 * Note:
72 * The extra column in each clock source array is used to store the mask
73 * bits in its register for the source.
74 */
75#define CLK(x) CLOCK_ID_ ## x
76static enum clock_id clock_source[CLOCK_TYPE_COUNT][CLOCK_MAX_MUX+1] = {
77 { CLK(AUDIO), CLK(XCPU), CLK(PERIPH), CLK(OSC),
78 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
79 MASK_BITS_31_30},
80 { CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(AUDIO),
81 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
82 MASK_BITS_31_30},
83 { CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(OSC),
84 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
85 MASK_BITS_31_30},
86 { CLK(PERIPH), CLK(CGENERAL), CLK(MEMORY), CLK(NONE),
87 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
88 MASK_BITS_31_30},
89 { CLK(PERIPH), CLK(CGENERAL), CLK(MEMORY), CLK(OSC),
90 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
91 MASK_BITS_31_30},
92 { CLK(PERIPH), CLK(DISPLAY), CLK(CGENERAL), CLK(OSC),
93 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
94 MASK_BITS_31_30},
95 { CLK(AUDIO), CLK(CGENERAL), CLK(PERIPH), CLK(OSC),
96 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
97 MASK_BITS_31_30},
98 { CLK(AUDIO), CLK(SFROM32KHZ), CLK(PERIPH), CLK(OSC),
99 CLK(EPCI), CLK(NONE), CLK(NONE), CLK(NONE),
100 MASK_BITS_31_29},
101 { CLK(PERIPH), CLK(MEMORY), CLK(DISPLAY), CLK(AUDIO),
102 CLK(CGENERAL), CLK(DISPLAY2), CLK(OSC), CLK(NONE),
103 MASK_BITS_31_29},
104 { CLK(PERIPH), CLK(CGENERAL), CLK(SFROM32KHZ), CLK(OSC),
105 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
106 MASK_BITS_31_28},
Simon Glass5a30cee2015-08-10 07:14:36 -0600[diff] [blame]107 /* CLOCK_TYPE_DP */
108 { CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
109 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
110 MASK_BITS_31_28},
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]111
112 /* Additional clock types on Tegra114+ */
113 /* CLOCK_TYPE_PC2CC3M */
114 { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
115 CLK(MEMORY), CLK(NONE), CLK(NONE), CLK(NONE),
116 MASK_BITS_31_29},
117 /* CLOCK_TYPE_PC2CC3S_T */
118 { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
119 CLK(SFROM32KHZ), CLK(NONE), CLK(OSC), CLK(NONE),
120 MASK_BITS_31_29},
121 /* CLOCK_TYPE_PC2CC3M_T */
122 { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
123 CLK(MEMORY), CLK(NONE), CLK(OSC), CLK(NONE),
124 MASK_BITS_31_29},
125 /* CLOCK_TYPE_PC2CC3M_T, w/16-bit divisor (I2C) */
126 { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
127 CLK(MEMORY), CLK(NONE), CLK(OSC), CLK(NONE),
128 MASK_BITS_31_29},
129 /* CLOCK_TYPE_MC2CC3P_A */
130 { CLK(MEMORY), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
131 CLK(PERIPH), CLK(NONE), CLK(AUDIO), CLK(NONE),
132 MASK_BITS_31_29},
133 /* CLOCK_TYPE_M */
134 { CLK(MEMORY), CLK(NONE), CLK(NONE), CLK(NONE),
135 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
136 MASK_BITS_31_30},
137 /* CLOCK_TYPE_MCPTM2C2C3 */
138 { CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(OSC),
139 CLK(MEMORY2), CLK(CGENERAL2), CLK(CGENERAL3), CLK(NONE),
140 MASK_BITS_31_29},
141 /* CLOCK_TYPE_PC2CC3T_S */
142 { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
143 CLK(OSC), CLK(NONE), CLK(SFROM32KHZ), CLK(NONE),
144 MASK_BITS_31_29},
145 /* CLOCK_TYPE_AC2CC3P_TS2 */
146 { CLK(AUDIO), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
147 CLK(PERIPH), CLK(NONE), CLK(OSC), CLK(SRC2),
148 MASK_BITS_31_29},
149 /* CLOCK_TYPE_PC01C00_C42C41TC40 */
150 { CLK(PERIPH), CLK(CGENERAL_1), CLK(CGENERAL_0), CLK(NONE),
151 CLK(CGENERAL4_2), CLK(CGENERAL4_1), CLK(OSC), CLK(CGENERAL4_0),
152 MASK_BITS_31_29},
153};
154
155/*
156 * Clock type for each peripheral clock source. We put the name in each
157 * record just so it is easy to match things up
158 */
159#define TYPE(name, type) type
160static enum clock_type_id clock_periph_type[PERIPHC_COUNT] = {
161 /* 0x00 */
162 TYPE(PERIPHC_I2S2, CLOCK_TYPE_AXPT),
163 TYPE(PERIPHC_I2S3, CLOCK_TYPE_AXPT),
164 TYPE(PERIPHC_SPDIF_OUT, CLOCK_TYPE_AXPT),
165 TYPE(PERIPHC_SPDIF_IN, CLOCK_TYPE_PC2CC3M),
166 TYPE(PERIPHC_PWM, CLOCK_TYPE_PC2CC3S_T),
167 TYPE(PERIPHC_05h, CLOCK_TYPE_NONE),
168 TYPE(PERIPHC_SBC2, CLOCK_TYPE_PC2CC3M_T),
169 TYPE(PERIPHC_SBC3, CLOCK_TYPE_PC2CC3M_T),
170
171 /* 0x08 */
172 TYPE(PERIPHC_08h, CLOCK_TYPE_NONE),
173 TYPE(PERIPHC_I2C1, CLOCK_TYPE_PC2CC3M_T16),
174 TYPE(PERIPHC_I2C5, CLOCK_TYPE_PC2CC3M_T16),
175 TYPE(PERIPHC_0bh, CLOCK_TYPE_NONE),
176 TYPE(PERIPHC_0ch, CLOCK_TYPE_NONE),
177 TYPE(PERIPHC_SBC1, CLOCK_TYPE_PC2CC3M_T),
178 TYPE(PERIPHC_DISP1, CLOCK_TYPE_PMDACD2T),
179 TYPE(PERIPHC_DISP2, CLOCK_TYPE_PMDACD2T),
180
181 /* 0x10 */
182 TYPE(PERIPHC_10h, CLOCK_TYPE_NONE),
183 TYPE(PERIPHC_11h, CLOCK_TYPE_NONE),
184 TYPE(PERIPHC_VI, CLOCK_TYPE_MC2CC3P_A),
185 TYPE(PERIPHC_13h, CLOCK_TYPE_NONE),
186 TYPE(PERIPHC_SDMMC1, CLOCK_TYPE_PC2CC3M_T),
187 TYPE(PERIPHC_SDMMC2, CLOCK_TYPE_PC2CC3M_T),
188 TYPE(PERIPHC_16h, CLOCK_TYPE_NONE),
189 TYPE(PERIPHC_17h, CLOCK_TYPE_NONE),
190
191 /* 0x18 */
192 TYPE(PERIPHC_18h, CLOCK_TYPE_NONE),
193 TYPE(PERIPHC_SDMMC4, CLOCK_TYPE_PC2CC3M_T),
194 TYPE(PERIPHC_VFIR, CLOCK_TYPE_PC2CC3M_T),
195 TYPE(PERIPHC_1Bh, CLOCK_TYPE_NONE),
196 TYPE(PERIPHC_1Ch, CLOCK_TYPE_NONE),
197 TYPE(PERIPHC_HSI, CLOCK_TYPE_PC2CC3M_T),
198 TYPE(PERIPHC_UART1, CLOCK_TYPE_PC2CC3M_T),
199 TYPE(PERIPHC_UART2, CLOCK_TYPE_PC2CC3M_T),
200
201 /* 0x20 */
202 TYPE(PERIPHC_HOST1X, CLOCK_TYPE_MC2CC3P_A),
203 TYPE(PERIPHC_21h, CLOCK_TYPE_NONE),
204 TYPE(PERIPHC_22h, CLOCK_TYPE_NONE),
205 TYPE(PERIPHC_23h, CLOCK_TYPE_NONE),
206 TYPE(PERIPHC_24h, CLOCK_TYPE_NONE),
207 TYPE(PERIPHC_25h, CLOCK_TYPE_NONE),
208 TYPE(PERIPHC_I2C2, CLOCK_TYPE_PC2CC3M_T16),
209 TYPE(PERIPHC_EMC, CLOCK_TYPE_MCPTM2C2C3),
210
211 /* 0x28 */
212 TYPE(PERIPHC_UART3, CLOCK_TYPE_PC2CC3M_T),
213 TYPE(PERIPHC_29h, CLOCK_TYPE_NONE),
214 TYPE(PERIPHC_VI_SENSOR, CLOCK_TYPE_MC2CC3P_A),
215 TYPE(PERIPHC_2bh, CLOCK_TYPE_NONE),
216 TYPE(PERIPHC_2ch, CLOCK_TYPE_NONE),
217 TYPE(PERIPHC_SBC4, CLOCK_TYPE_PC2CC3M_T),
218 TYPE(PERIPHC_I2C3, CLOCK_TYPE_PC2CC3M_T16),
219 TYPE(PERIPHC_SDMMC3, CLOCK_TYPE_PC2CC3M_T),
220
221 /* 0x30 */
222 TYPE(PERIPHC_UART4, CLOCK_TYPE_PC2CC3M_T),
223 TYPE(PERIPHC_UART5, CLOCK_TYPE_PC2CC3M_T),
224 TYPE(PERIPHC_VDE, CLOCK_TYPE_PC2CC3M_T),
225 TYPE(PERIPHC_OWR, CLOCK_TYPE_PC2CC3M_T),
226 TYPE(PERIPHC_NOR, CLOCK_TYPE_PC2CC3M_T),
227 TYPE(PERIPHC_CSITE, CLOCK_TYPE_PC2CC3M_T),
228 TYPE(PERIPHC_I2S1, CLOCK_TYPE_AXPT),
229 TYPE(PERIPHC_DTV, CLOCK_TYPE_NONE),
230
231 /* 0x38 */
232 TYPE(PERIPHC_38h, CLOCK_TYPE_NONE),
233 TYPE(PERIPHC_39h, CLOCK_TYPE_NONE),
234 TYPE(PERIPHC_3ah, CLOCK_TYPE_NONE),
235 TYPE(PERIPHC_3bh, CLOCK_TYPE_NONE),
236 TYPE(PERIPHC_MSENC, CLOCK_TYPE_MC2CC3P_A),
237 TYPE(PERIPHC_TSEC, CLOCK_TYPE_PC2CC3M_T),
238 TYPE(PERIPHC_3eh, CLOCK_TYPE_NONE),
239 TYPE(PERIPHC_OSC, CLOCK_TYPE_NONE),
240
241 /* 0x40 */
242 TYPE(PERIPHC_40h, CLOCK_TYPE_NONE), /* start with 0x3b0 */
243 TYPE(PERIPHC_MSELECT, CLOCK_TYPE_PC2CC3M_T),
244 TYPE(PERIPHC_TSENSOR, CLOCK_TYPE_PC2CC3T_S),
245 TYPE(PERIPHC_I2S4, CLOCK_TYPE_AXPT),
246 TYPE(PERIPHC_I2S5, CLOCK_TYPE_AXPT),
247 TYPE(PERIPHC_I2C4, CLOCK_TYPE_PC2CC3M_T16),
248 TYPE(PERIPHC_SBC5, CLOCK_TYPE_PC2CC3M_T),
249 TYPE(PERIPHC_SBC6, CLOCK_TYPE_PC2CC3M_T),
250
251 /* 0x48 */
252 TYPE(PERIPHC_AUDIO, CLOCK_TYPE_AC2CC3P_TS2),
253 TYPE(PERIPHC_49h, CLOCK_TYPE_NONE),
254 TYPE(PERIPHC_4ah, CLOCK_TYPE_NONE),
255 TYPE(PERIPHC_4bh, CLOCK_TYPE_NONE),
256 TYPE(PERIPHC_4ch, CLOCK_TYPE_NONE),
257 TYPE(PERIPHC_HDA2CODEC2X, CLOCK_TYPE_PC2CC3M_T),
258 TYPE(PERIPHC_ACTMON, CLOCK_TYPE_PC2CC3S_T),
259 TYPE(PERIPHC_EXTPERIPH1, CLOCK_TYPE_ASPTE),
260
261 /* 0x50 */
262 TYPE(PERIPHC_EXTPERIPH2, CLOCK_TYPE_ASPTE),
263 TYPE(PERIPHC_EXTPERIPH3, CLOCK_TYPE_ASPTE),
264 TYPE(PERIPHC_52h, CLOCK_TYPE_NONE),
265 TYPE(PERIPHC_I2CSLOW, CLOCK_TYPE_PC2CC3S_T),
266 TYPE(PERIPHC_SYS, CLOCK_TYPE_NONE),
267 TYPE(PERIPHC_55h, CLOCK_TYPE_NONE),
268 TYPE(PERIPHC_56h, CLOCK_TYPE_NONE),
269 TYPE(PERIPHC_57h, CLOCK_TYPE_NONE),
270
271 /* 0x58 */
272 TYPE(PERIPHC_58h, CLOCK_TYPE_NONE),
273 TYPE(PERIPHC_59h, CLOCK_TYPE_NONE),
274 TYPE(PERIPHC_5ah, CLOCK_TYPE_NONE),
275 TYPE(PERIPHC_5bh, CLOCK_TYPE_NONE),
276 TYPE(PERIPHC_SATAOOB, CLOCK_TYPE_PCMT),
277 TYPE(PERIPHC_SATA, CLOCK_TYPE_PCMT),
278 TYPE(PERIPHC_HDA, CLOCK_TYPE_PC2CC3M_T),
279 TYPE(PERIPHC_5fh, CLOCK_TYPE_NONE),
280
281 /* 0x60 */
282 TYPE(PERIPHC_XUSB_CORE_HOST, CLOCK_TYPE_NONE),
283 TYPE(PERIPHC_XUSB_FALCON, CLOCK_TYPE_NONE),
284 TYPE(PERIPHC_XUSB_FS, CLOCK_TYPE_NONE),
285 TYPE(PERIPHC_XUSB_CORE_DEV, CLOCK_TYPE_NONE),
286 TYPE(PERIPHC_XUSB_SS, CLOCK_TYPE_NONE),
287 TYPE(PERIPHC_CILAB, CLOCK_TYPE_NONE),
288 TYPE(PERIPHC_CILCD, CLOCK_TYPE_NONE),
289 TYPE(PERIPHC_CILE, CLOCK_TYPE_NONE),
290
291 /* 0x68 */
292 TYPE(PERIPHC_DSIA_LP, CLOCK_TYPE_NONE),
293 TYPE(PERIPHC_DSIB_LP, CLOCK_TYPE_NONE),
294 TYPE(PERIPHC_ENTROPY, CLOCK_TYPE_NONE),
295 TYPE(PERIPHC_DVFS_REF, CLOCK_TYPE_NONE),
296 TYPE(PERIPHC_DVFS_SOC, CLOCK_TYPE_NONE),
297 TYPE(PERIPHC_TRACECLKIN, CLOCK_TYPE_NONE),
298 TYPE(PERIPHC_6eh, CLOCK_TYPE_NONE),
299 TYPE(PERIPHC_6fh, CLOCK_TYPE_NONE),
300
301 /* 0x70 */
302 TYPE(PERIPHC_EMC_LATENCY, CLOCK_TYPE_NONE),
303 TYPE(PERIPHC_SOC_THERM, CLOCK_TYPE_NONE),
304 TYPE(PERIPHC_72h, CLOCK_TYPE_NONE),
305 TYPE(PERIPHC_73h, CLOCK_TYPE_NONE),
306 TYPE(PERIPHC_74h, CLOCK_TYPE_NONE),
307 TYPE(PERIPHC_75h, CLOCK_TYPE_NONE),
308 TYPE(PERIPHC_VI_SENSOR2, CLOCK_TYPE_NONE),
309 TYPE(PERIPHC_I2C6, CLOCK_TYPE_PC2CC3M_T16),
310
311 /* 0x78 */
312 TYPE(PERIPHC_78h, CLOCK_TYPE_NONE),
313 TYPE(PERIPHC_EMC_DLL, CLOCK_TYPE_MCPTM2C2C3),
314 TYPE(PERIPHC_7ah, CLOCK_TYPE_NONE),
315 TYPE(PERIPHC_CLK72MHZ, CLOCK_TYPE_NONE),
316 TYPE(PERIPHC_7ch, CLOCK_TYPE_NONE),
317 TYPE(PERIPHC_7dh, CLOCK_TYPE_NONE),
318 TYPE(PERIPHC_VIC, CLOCK_TYPE_NONE),
319 TYPE(PERIPHC_7Fh, CLOCK_TYPE_NONE),
320
321 /* 0x80 */
322 TYPE(PERIPHC_SDMMC_LEGACY_TM, CLOCK_TYPE_NONE),
323 TYPE(PERIPHC_NVDEC, CLOCK_TYPE_NONE),
324 TYPE(PERIPHC_NVJPG, CLOCK_TYPE_NONE),
325 TYPE(PERIPHC_NVENC, CLOCK_TYPE_NONE),
326 TYPE(PERIPHC_84h, CLOCK_TYPE_NONE),
327 TYPE(PERIPHC_85h, CLOCK_TYPE_NONE),
328 TYPE(PERIPHC_86h, CLOCK_TYPE_NONE),
329 TYPE(PERIPHC_87h, CLOCK_TYPE_NONE),
330
331 /* 0x88 */
332 TYPE(PERIPHC_88h, CLOCK_TYPE_NONE),
333 TYPE(PERIPHC_89h, CLOCK_TYPE_NONE),
334 TYPE(PERIPHC_DMIC3, CLOCK_TYPE_NONE),
335 TYPE(PERIPHC_APE, CLOCK_TYPE_NONE),
336 TYPE(PERIPHC_QSPI, CLOCK_TYPE_PC01C00_C42C41TC40),
337 TYPE(PERIPHC_VI_I2C, CLOCK_TYPE_NONE),
338 TYPE(PERIPHC_USB2_HSIC_TRK, CLOCK_TYPE_NONE),
339 TYPE(PERIPHC_PEX_SATA_USB_RX_BYP, CLOCK_TYPE_NONE),
340
341 /* 0x90 */
342 TYPE(PERIPHC_MAUD, CLOCK_TYPE_NONE),
343 TYPE(PERIPHC_TSECB, CLOCK_TYPE_NONE),
344};
345
346/*
347 * This array translates a periph_id to a periphc_internal_id
348 *
349 * Not present/matched up:
350 * uint vi_sensor; _VI_SENSOR_0, 0x1A8
351 * SPDIF - which is both 0x08 and 0x0c
352 *
353 */
354#define NONE(name) (-1)
355#define OFFSET(name, value) PERIPHC_ ## name
356#define INTERNAL_ID(id) (id & 0x000000ff)
357static s8 periph_id_to_internal_id[PERIPH_ID_COUNT] = {
358 /* Low word: 31:0 */
359 NONE(CPU),
360 NONE(COP),
361 NONE(TRIGSYS),
362 NONE(ISPB),
363 NONE(RESERVED4),
364 NONE(TMR),
365 PERIPHC_UART1,
366 PERIPHC_UART2, /* and vfir 0x68 */
367
368 /* 8 */
369 NONE(GPIO),
370 PERIPHC_SDMMC2,
371 PERIPHC_SPDIF_IN,
372 PERIPHC_I2S2,
373 PERIPHC_I2C1,
374 NONE(RESERVED13),
375 PERIPHC_SDMMC1,
376 PERIPHC_SDMMC4,
377
378 /* 16 */
379 NONE(TCW),
380 PERIPHC_PWM,
381 PERIPHC_I2S3,
382 NONE(RESERVED19),
383 PERIPHC_VI,
384 NONE(RESERVED21),
385 NONE(USBD),
386 NONE(ISP),
387
388 /* 24 */
389 NONE(RESERVED24),
390 NONE(RESERVED25),
391 PERIPHC_DISP2,
392 PERIPHC_DISP1,
393 PERIPHC_HOST1X,
394 NONE(VCP),
395 PERIPHC_I2S1,
396 NONE(CACHE2),
397
398 /* Middle word: 63:32 */
399 NONE(MEM),
400 NONE(AHBDMA),
401 NONE(APBDMA),
402 NONE(RESERVED35),
403 NONE(RESERVED36),
404 NONE(STAT_MON),
405 NONE(RESERVED38),
406 NONE(FUSE),
407
408 /* 40 */
409 NONE(KFUSE),
410 PERIPHC_SBC1, /* SBCx = SPIx */
411 PERIPHC_NOR,
412 NONE(RESERVED43),
413 PERIPHC_SBC2,
414 NONE(XIO),
415 PERIPHC_SBC3,
416 PERIPHC_I2C5,
417
418 /* 48 */
419 NONE(DSI),
420 NONE(RESERVED49),
421 PERIPHC_HSI,
422 NONE(RESERVED51),
423 NONE(CSI),
424 NONE(RESERVED53),
425 PERIPHC_I2C2,
426 PERIPHC_UART3,
427
428 /* 56 */
429 NONE(MIPI_CAL),
430 PERIPHC_EMC,
431 NONE(USB2),
432 NONE(USB3),
433 NONE(RESERVED60),
434 PERIPHC_VDE,
435 NONE(BSEA),
436 NONE(BSEV),
437
438 /* Upper word 95:64 */
439 NONE(RESERVED64),
440 PERIPHC_UART4,
441 PERIPHC_UART5,
442 PERIPHC_I2C3,
443 PERIPHC_SBC4,
444 PERIPHC_SDMMC3,
445 NONE(PCIE),
446 PERIPHC_OWR,
447
448 /* 72 */
449 NONE(AFI),
450 PERIPHC_CSITE,
451 NONE(PCIEXCLK),
452 NONE(AVPUCQ),
453 NONE(LA),
454 NONE(TRACECLKIN),
455 NONE(SOC_THERM),
456 NONE(DTV),
457
458 /* 80 */
459 NONE(RESERVED80),
460 PERIPHC_I2CSLOW,
461 NONE(DSIB),
462 PERIPHC_TSEC,
463 NONE(RESERVED84),
464 NONE(RESERVED85),
465 NONE(RESERVED86),
466 NONE(EMUCIF),
467
468 /* 88 */
469 NONE(RESERVED88),
470 NONE(XUSB_HOST),
471 NONE(RESERVED90),
472 PERIPHC_MSENC,
473 NONE(RESERVED92),
474 NONE(RESERVED93),
475 NONE(RESERVED94),
476 NONE(XUSB_DEV),
477
478 /* V word: 31:0 */
479 NONE(CPUG),
480 NONE(CPULP),
481 NONE(V_RESERVED2),
482 PERIPHC_MSELECT,
483 NONE(V_RESERVED4),
484 PERIPHC_I2S4,
485 PERIPHC_I2S5,
486 PERIPHC_I2C4,
487
488 /* 104 */
489 PERIPHC_SBC5,
490 PERIPHC_SBC6,
491 PERIPHC_AUDIO,
492 NONE(APBIF),
493 NONE(V_RESERVED12),
494 NONE(V_RESERVED13),
495 NONE(V_RESERVED14),
496 PERIPHC_HDA2CODEC2X,
497
498 /* 112 */
499 NONE(ATOMICS),
500 NONE(V_RESERVED17),
501 NONE(V_RESERVED18),
502 NONE(V_RESERVED19),
503 NONE(V_RESERVED20),
504 NONE(V_RESERVED21),
505 NONE(V_RESERVED22),
506 PERIPHC_ACTMON,
507
508 /* 120 */
509 NONE(EXTPERIPH1),
510 NONE(EXTPERIPH2),
511 NONE(EXTPERIPH3),
512 NONE(OOB),
513 PERIPHC_SATA,
514 PERIPHC_HDA,
515 NONE(TZRAM),
516 NONE(SE),
517
518 /* W word: 31:0 */
519 NONE(HDA2HDMICODEC),
520 NONE(SATACOLD),
521 NONE(W_RESERVED2),
522 NONE(W_RESERVED3),
523 NONE(W_RESERVED4),
524 NONE(W_RESERVED5),
525 NONE(W_RESERVED6),
526 NONE(W_RESERVED7),
527
528 /* 136 */
529 NONE(CEC),
530 NONE(W_RESERVED9),
531 NONE(W_RESERVED10),
532 NONE(W_RESERVED11),
533 NONE(W_RESERVED12),
534 NONE(W_RESERVED13),
535 NONE(XUSB_PADCTL),
536 NONE(W_RESERVED15),
537
538 /* 144 */
539 NONE(W_RESERVED16),
540 NONE(W_RESERVED17),
541 NONE(W_RESERVED18),
542 NONE(W_RESERVED19),
543 NONE(W_RESERVED20),
544 NONE(ENTROPY),
545 NONE(DDS),
546 NONE(W_RESERVED23),
547
548 /* 152 */
549 NONE(W_RESERVED24),
550 NONE(W_RESERVED25),
551 NONE(W_RESERVED26),
552 NONE(DVFS),
553 NONE(XUSB_SS),
554 NONE(W_RESERVED29),
555 NONE(W_RESERVED30),
556 NONE(W_RESERVED31),
557
558 /* X word: 31:0 */
559 NONE(SPARE),
560 NONE(X_RESERVED1),
561 NONE(X_RESERVED2),
562 NONE(X_RESERVED3),
563 NONE(CAM_MCLK),
564 NONE(CAM_MCLK2),
565 PERIPHC_I2C6,
566 NONE(X_RESERVED7),
567
568 /* 168 */
569 NONE(X_RESERVED8),
570 NONE(X_RESERVED9),
571 NONE(X_RESERVED10),
572 NONE(VIM2_CLK),
573 NONE(X_RESERVED12),
574 NONE(X_RESERVED13),
575 NONE(EMC_DLL),
576 NONE(X_RESERVED15),
577
578 /* 176 */
579 NONE(X_RESERVED16),
580 NONE(CLK72MHZ),
581 NONE(VIC),
582 NONE(X_RESERVED19),
583 NONE(X_RESERVED20),
584 NONE(DPAUX),
585 NONE(SOR0),
586 NONE(X_RESERVED23),
587
588 /* 184 */
589 NONE(GPU),
590 NONE(X_RESERVED25),
591 NONE(X_RESERVED26),
592 NONE(X_RESERVED27),
593 NONE(X_RESERVED28),
594 NONE(X_RESERVED29),
595 NONE(X_RESERVED30),
596 NONE(X_RESERVED31),
597
598 /* Y: 192 (192 - 223) */
599 NONE(Y_RESERVED0),
600 PERIPHC_SDMMC_LEGACY_TM,
601 PERIPHC_NVDEC,
602 PERIPHC_NVJPG,
603 NONE(Y_RESERVED4),
604 PERIPHC_DMIC3, /* 197 */
605 PERIPHC_APE, /* 198 */
606 NONE(Y_RESERVED7),
607
608 /* 200 */
609 NONE(Y_RESERVED8),
610 NONE(Y_RESERVED9),
611 NONE(Y_RESERVED10),
612 NONE(Y_RESERVED11),
613 NONE(Y_RESERVED12),
614 NONE(Y_RESERVED13),
615 NONE(Y_RESERVED14),
616 NONE(Y_RESERVED15),
617
618 /* 208 */
619 PERIPHC_VI_I2C, /* 208 */
620 NONE(Y_RESERVED17),
621 NONE(Y_RESERVED18),
622 PERIPHC_QSPI, /* 211 */
623 NONE(Y_RESERVED20),
624 NONE(Y_RESERVED21),
625 NONE(Y_RESERVED22),
626 NONE(Y_RESERVED23),
627
628 /* 216 */
629 NONE(Y_RESERVED24),
630 NONE(Y_RESERVED25),
631 NONE(Y_RESERVED26),
632 PERIPHC_NVENC, /* 219 */
633 NONE(Y_RESERVED28),
634 NONE(Y_RESERVED29),
635 NONE(Y_RESERVED30),
636 NONE(Y_RESERVED31),
637};
638
639/*
Tom Warren722e0002015-06-25 09:50:44 -0700[diff] [blame]640 * PLL divider shift/mask tables for all PLL IDs.
641 */
642struct clk_pll_info tegra_pll_info_table[CLOCK_ID_PLL_COUNT] = {
643 /*
644 * NOTE: If kcp_mask/kvco_mask == 0, they're not used in that PLL (PLLC, etc.)
645 * If lock_ena or lock_det are >31, they're not used in that PLL (PLLC, etc.)
646 */
647 { .m_shift = 0, .m_mask = 0xFF, .n_shift = 10, .n_mask = 0xFF, .p_shift = 20, .p_mask = 0x1F,
648 .lock_ena = 32, .lock_det = 27, .kcp_shift = 0, .kcp_mask = 0, .kvco_shift = 0, .kvco_mask = 0 }, /* PLLC */
649 { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 20, .p_mask = 0x1F,
650 .lock_ena = 4, .lock_det = 27, .kcp_shift = 1, .kcp_mask = 3, .kvco_shift = 0, .kvco_mask = 1 }, /* PLLM */
651 { .m_shift = 0, .m_mask = 0xFF, .n_shift = 10, .n_mask = 0xFF, .p_shift = 20, .p_mask = 0x1F,
652 .lock_ena = 18, .lock_det = 27, .kcp_shift = 0, .kcp_mask = 3, .kvco_shift = 2, .kvco_mask = 1 }, /* PLLP */
653 { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 20, .p_mask = 0x1F,
654 .lock_ena = 28, .lock_det = 27, .kcp_shift = 25, .kcp_mask = 3, .kvco_shift = 24, .kvco_mask = 1 }, /* PLLA */
655 { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 16, .p_mask = 0x1F,
656 .lock_ena = 29, .lock_det = 27, .kcp_shift = 25, .kcp_mask = 3, .kvco_shift = 24, .kvco_mask = 1 }, /* PLLU */
657 { .m_shift = 0, .m_mask = 0xFF, .n_shift = 11, .n_mask = 0xFF, .p_shift = 20, .p_mask = 0x07,
658 .lock_ena = 18, .lock_det = 27, .kcp_shift = 23, .kcp_mask = 3, .kvco_shift = 22, .kvco_mask = 1 }, /* PLLD */
659 { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 20, .p_mask = 0x1F,
660 .lock_ena = 18, .lock_det = 27, .kcp_shift = 1, .kcp_mask = 3, .kvco_shift = 0, .kvco_mask = 1 }, /* PLLX */
661 { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 0, .p_mask = 0,
662 .lock_ena = 9, .lock_det = 11, .kcp_shift = 6, .kcp_mask = 3, .kvco_shift = 0, .kvco_mask = 1 }, /* PLLE */
663 { .m_shift = 0, .m_mask = 0, .n_shift = 0, .n_mask = 0, .p_shift = 0, .p_mask = 0,
664 .lock_ena = 0, .lock_det = 0, .kcp_shift = 0, .kcp_mask = 0, .kvco_shift = 0, .kvco_mask = 0 }, /* PLLS (gone)*/
Simon Glass5a30cee2015-08-10 07:14:36 -0600[diff] [blame]665 { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 19, .p_mask = 0x1F,
666 .lock_ena = 30, .lock_det = 27, .kcp_shift = 25, .kcp_mask = 3, .kvco_shift = 24, .kvco_mask = 1 }, /* PLLDP */
Tom Warren722e0002015-06-25 09:50:44 -0700[diff] [blame]667};
668
669/*
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]670 * Get the oscillator frequency, from the corresponding hardware configuration
671 * field. Note that Tegra30+ support 3 new higher freqs, but we map back
672 * to the old T20 freqs. Support for the higher oscillators is TBD.
673 */
674enum clock_osc_freq clock_get_osc_freq(void)
675{
676 struct clk_rst_ctlr *clkrst =
677 (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
678 u32 reg;
679
680 reg = readl(&clkrst->crc_osc_ctrl);
681 reg = (reg & OSC_FREQ_MASK) >> OSC_FREQ_SHIFT;
682 /*
683 * 0 = 13MHz, 1 = 16.8MHz, 4 = 19.2MHz, 5 = 38.4MHz,
684 * 8 = 12MHz, 9 = 48MHz, 12 = 26MHz
685 */
686 if (reg == 5) {
687 debug("OSC_FREQ is 38.4MHz (%d) ...\n", reg);
Tom Warren3e8650c2015-06-22 13:03:44 -0700[diff] [blame]688 /* Map it to the 5th CLOCK_OSC_ enum, i.e. 4 */
689 return 4;
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]690 }
691
692 /*
693 * Map to most common (T20) freqs (except 38.4, handled above):
694 * 13/16.8 = 0, 19.2 = 1, 12/48 = 2, 26 = 3
695 */
696 return reg >> 2;
697}
698
699/* Returns a pointer to the clock source register for a peripheral */
700u32 *get_periph_source_reg(enum periph_id periph_id)
701{
702 struct clk_rst_ctlr *clkrst =
703 (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
704 enum periphc_internal_id internal_id;
705
706 /* Coresight is a special case */
707 if (periph_id == PERIPH_ID_CSI)
708 return &clkrst->crc_clk_src[PERIPH_ID_CSI+1];
709
710 assert(periph_id >= PERIPH_ID_FIRST && periph_id < PERIPH_ID_COUNT);
711 internal_id = INTERNAL_ID(periph_id_to_internal_id[periph_id]);
712 assert(internal_id != -1);
713
714 if (internal_id < PERIPHC_VW_FIRST)
715 /* L, H, U */
716 return &clkrst->crc_clk_src[internal_id];
717
718 if (internal_id < PERIPHC_X_FIRST) {
719 /* VW */
720 internal_id -= PERIPHC_VW_FIRST;
721 return &clkrst->crc_clk_src_vw[internal_id];
722 }
723
724 if (internal_id < PERIPHC_Y_FIRST) {
725 /* X */
726 internal_id -= PERIPHC_X_FIRST;
727 return &clkrst->crc_clk_src_x[internal_id];
728 }
729
730 /* Y */
731 internal_id -= PERIPHC_Y_FIRST;
732 return &clkrst->crc_clk_src_y[internal_id];
733}
734
735/**
736 * Given a peripheral ID and the required source clock, this returns which
737 * value should be programmed into the source mux for that peripheral.
738 *
739 * There is special code here to handle the one source type with 5 sources.
740 *
741 * @param periph_id peripheral to start
742 * @param source PLL id of required parent clock
743 * @param mux_bits Set to number of bits in mux register: 2 or 4
744 * @param divider_bits Set to number of divider bits (8 or 16)
745 * @return mux value (0-4, or -1 if not found)
746 */
747int get_periph_clock_source(enum periph_id periph_id,
748 enum clock_id parent, int *mux_bits, int *divider_bits)
749{
750 enum clock_type_id type;
751 enum periphc_internal_id internal_id;
752 int mux;
753
754 assert(clock_periph_id_isvalid(periph_id));
755
756 internal_id = INTERNAL_ID(periph_id_to_internal_id[periph_id]);
757 assert(periphc_internal_id_isvalid(internal_id));
758
759 type = clock_periph_type[internal_id];
760 assert(clock_type_id_isvalid(type));
761
762 *mux_bits = clock_source[type][CLOCK_MAX_MUX];
763
764 if (type == CLOCK_TYPE_PC2CC3M_T16)
765 *divider_bits = 16;
766 else
767 *divider_bits = 8;
768
769 for (mux = 0; mux < CLOCK_MAX_MUX; mux++)
770 if (clock_source[type][mux] == parent)
771 return mux;
772
773 /* if we get here, either us or the caller has made a mistake */
774 printf("Caller requested bad clock: periph=%d, parent=%d\n", periph_id,
775 parent);
776 return -1;
777}
778
779void clock_set_enable(enum periph_id periph_id, int enable)
780{
781 struct clk_rst_ctlr *clkrst =
782 (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
783 u32 *clk;
784 u32 reg;
785
786 /* Enable/disable the clock to this peripheral */
787 assert(clock_periph_id_isvalid(periph_id));
788 if ((int)periph_id < (int)PERIPH_ID_VW_FIRST)
789 clk = &clkrst->crc_clk_out_enb[PERIPH_REG(periph_id)];
790 else if ((int)periph_id < (int)PERIPH_ID_X_FIRST)
791 clk = &clkrst->crc_clk_out_enb_vw[PERIPH_REG(periph_id)];
792 else if ((int)periph_id < (int)PERIPH_ID_Y_FIRST)
793 clk = &clkrst->crc_clk_out_enb_x;
794 else
795 clk = &clkrst->crc_clk_out_enb_y;
796
797 reg = readl(clk);
798 if (enable)
799 reg |= PERIPH_MASK(periph_id);
800 else
801 reg &= ~PERIPH_MASK(periph_id);
802 writel(reg, clk);
803}
804
805void reset_set_enable(enum periph_id periph_id, int enable)
806{
807 struct clk_rst_ctlr *clkrst =
808 (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
809 u32 *reset;
810 u32 reg;
811
812 /* Enable/disable reset to the peripheral */
813 assert(clock_periph_id_isvalid(periph_id));
814 if (periph_id < PERIPH_ID_VW_FIRST)
815 reset = &clkrst->crc_rst_dev[PERIPH_REG(periph_id)];
816 else if ((int)periph_id < (int)PERIPH_ID_X_FIRST)
817 reset = &clkrst->crc_rst_dev_vw[PERIPH_REG(periph_id)];
818 else if ((int)periph_id < (int)PERIPH_ID_Y_FIRST)
819 reset = &clkrst->crc_rst_devices_x;
820 else
821 reset = &clkrst->crc_rst_devices_y;
822
823 reg = readl(reset);
824 if (enable)
825 reg |= PERIPH_MASK(periph_id);
826 else
827 reg &= ~PERIPH_MASK(periph_id);
828 writel(reg, reset);
829}
830
831#ifdef CONFIG_OF_CONTROL
832/*
833 * Convert a device tree clock ID to our peripheral ID. They are mostly
834 * the same but we are very cautious so we check that a valid clock ID is
835 * provided.
836 *
837 * @param clk_id Clock ID according to tegra210 device tree binding
838 * @return peripheral ID, or PERIPH_ID_NONE if the clock ID is invalid
839 */
840enum periph_id clk_id_to_periph_id(int clk_id)
841{
842 if (clk_id > PERIPH_ID_COUNT)
843 return PERIPH_ID_NONE;
844
845 switch (clk_id) {
846 case PERIPH_ID_RESERVED4:
847 case PERIPH_ID_RESERVED25:
848 case PERIPH_ID_RESERVED35:
849 case PERIPH_ID_RESERVED36:
850 case PERIPH_ID_RESERVED38:
851 case PERIPH_ID_RESERVED43:
852 case PERIPH_ID_RESERVED49:
853 case PERIPH_ID_RESERVED53:
854 case PERIPH_ID_RESERVED64:
855 case PERIPH_ID_RESERVED84:
856 case PERIPH_ID_RESERVED85:
857 case PERIPH_ID_RESERVED86:
858 case PERIPH_ID_RESERVED88:
859 case PERIPH_ID_RESERVED90:
860 case PERIPH_ID_RESERVED92:
861 case PERIPH_ID_RESERVED93:
862 case PERIPH_ID_RESERVED94:
863 case PERIPH_ID_V_RESERVED2:
864 case PERIPH_ID_V_RESERVED4:
865 case PERIPH_ID_V_RESERVED17:
866 case PERIPH_ID_V_RESERVED18:
867 case PERIPH_ID_V_RESERVED19:
868 case PERIPH_ID_V_RESERVED20:
869 case PERIPH_ID_V_RESERVED21:
870 case PERIPH_ID_V_RESERVED22:
871 case PERIPH_ID_W_RESERVED2:
872 case PERIPH_ID_W_RESERVED3:
873 case PERIPH_ID_W_RESERVED4:
874 case PERIPH_ID_W_RESERVED5:
875 case PERIPH_ID_W_RESERVED6:
876 case PERIPH_ID_W_RESERVED7:
877 case PERIPH_ID_W_RESERVED9:
878 case PERIPH_ID_W_RESERVED10:
879 case PERIPH_ID_W_RESERVED11:
880 case PERIPH_ID_W_RESERVED12:
881 case PERIPH_ID_W_RESERVED13:
882 case PERIPH_ID_W_RESERVED15:
883 case PERIPH_ID_W_RESERVED16:
884 case PERIPH_ID_W_RESERVED17:
885 case PERIPH_ID_W_RESERVED18:
886 case PERIPH_ID_W_RESERVED19:
887 case PERIPH_ID_W_RESERVED20:
888 case PERIPH_ID_W_RESERVED23:
889 case PERIPH_ID_W_RESERVED29:
890 case PERIPH_ID_W_RESERVED30:
891 case PERIPH_ID_W_RESERVED31:
892 return PERIPH_ID_NONE;
893 default:
894 return clk_id;
895 }
896}
897#endif /* CONFIG_OF_CONTROL */
898
899/*
900 * T210 redefines PLLP_OUT2 as PLLP_VCO/DIVP, so do different OUT1-4 setup here.
901 * PLLP_BASE/MISC/etc. is already set up for 408MHz in the BootROM.
902 */
903void tegra210_setup_pllp(void)
904{
905 struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
906 u32 reg;
907
908 /* Set PLLP_OUT1, 3 & 4 freqs to 9.6, 102 & 204MHz */
909
910 /* OUT1 */
911 /* Assert RSTN before enable */
912 reg = PLLP_OUT1_RSTN_EN;
913 writel(reg, &clkrst->crc_pll[CLOCK_ID_PERIPH].pll_out[0]);
914 /* Set divisor and reenable */
915 reg = (IN_408_OUT_9_6_DIVISOR << PLLP_OUT1_RATIO)
916 | PLLP_OUT1_OVR | PLLP_OUT1_CLKEN | PLLP_OUT1_RSTN_DIS;
917 writel(reg, &clkrst->crc_pll[CLOCK_ID_PERIPH].pll_out[0]);
918
919 /* OUT3, 4 */
920 /* Assert RSTN before enable */
921 reg = PLLP_OUT4_RSTN_EN | PLLP_OUT3_RSTN_EN;
922 writel(reg, &clkrst->crc_pll[CLOCK_ID_PERIPH].pll_out[1]);
923 /* Set divisor and reenable */
924 reg = (IN_408_OUT_204_DIVISOR << PLLP_OUT4_RATIO)
925 | PLLP_OUT4_OVR | PLLP_OUT4_CLKEN | PLLP_OUT4_RSTN_DIS
926 | (IN_408_OUT_102_DIVISOR << PLLP_OUT3_RATIO)
927 | PLLP_OUT3_OVR | PLLP_OUT3_CLKEN | PLLP_OUT3_RSTN_DIS;
928 writel(reg, &clkrst->crc_pll[CLOCK_ID_PERIPH].pll_out[1]);
929
930 /*
931 * NOTE: If you want to change PLLP_OUT2 away from 204MHz,
932 * you can change PLLP_BASE DIVP here. Currently defaults
933 * to 1, which is 2^1, or 2, so PLLP_OUT2 is 204MHz.
934 * See Table 13 in section 5.1.4 in T210 TRM for more info.
935 */
936}
937
938void clock_early_init(void)
939{
940 struct clk_rst_ctlr *clkrst =
941 (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
Tom Warren722e0002015-06-25 09:50:44 -0700[diff] [blame]942 struct clk_pll_info *pllinfo = &tegra_pll_info_table[CLOCK_ID_DISPLAY];
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]943 u32 data;
944
945 tegra210_setup_pllp();
946
947 /*
948 * PLLC output frequency set to 600Mhz
949 * PLLD output frequency set to 925Mhz
950 */
951 switch (clock_get_osc_freq()) {
952 case CLOCK_OSC_FREQ_12_0: /* OSC is 12Mhz */
953 clock_set_rate(CLOCK_ID_CGENERAL, 600, 12, 0, 8);
954 clock_set_rate(CLOCK_ID_DISPLAY, 925, 12, 0, 12);
955 break;
956
957 case CLOCK_OSC_FREQ_26_0: /* OSC is 26Mhz */
958 clock_set_rate(CLOCK_ID_CGENERAL, 600, 26, 0, 8);
959 clock_set_rate(CLOCK_ID_DISPLAY, 925, 26, 0, 12);
960 break;
961
962 case CLOCK_OSC_FREQ_13_0: /* OSC is 13Mhz */
963 clock_set_rate(CLOCK_ID_CGENERAL, 600, 13, 0, 8);
964 clock_set_rate(CLOCK_ID_DISPLAY, 925, 13, 0, 12);
965 break;
966 case CLOCK_OSC_FREQ_19_2:
967 clock_set_rate(CLOCK_ID_CGENERAL, 125, 4, 0, 0);
968 clock_set_rate(CLOCK_ID_DISPLAY, 96, 2, 0, 12);
969 break;
Tom Warren3e8650c2015-06-22 13:03:44 -0700[diff] [blame]970 case CLOCK_OSC_FREQ_38_4:
971 clock_set_rate(CLOCK_ID_CGENERAL, 125, 8, 0, 0);
972 clock_set_rate(CLOCK_ID_DISPLAY, 96, 4, 0, 0);
973 break;
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]974 default:
975 /*
976 * These are not supported. It is too early to print a
977 * message and the UART likely won't work anyway due to the
978 * oscillator being wrong.
979 */
980 break;
981 }
982
983 /* PLLC_MISC1: Turn IDDQ off. NOTE: T210 PLLC_MISC_1 maps to pll_misc */
984 clrbits_le32(&clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_misc,
985 (1 << PLLC_IDDQ));
986 udelay(2);
987
988 /*
989 * PLLC_MISC: Take PLLC out of reset. NOTE: T210 PLLC_MISC maps
990 * to pll_out[1]
991 */
992 clrbits_le32(&clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_out[1],
993 (1 << PLLC_RESET));
994 udelay(2);
995
996 /* PLLD_MISC: Set CLKENABLE and LOCK_DETECT bits */
Tom Warren722e0002015-06-25 09:50:44 -0700[diff] [blame]997 data = (1 << PLLD_ENABLE_CLK) | (1 << pllinfo->lock_ena);
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]998 writel(data, &clkrst->crc_pll[CLOCK_ID_DISPLAY].pll_misc);
999 udelay(2);
1000}
1001
Thierry Redingc043c022015-08-20 11:42:19 +0200[diff] [blame]1002unsigned int clk_m_get_rate(unsigned parent_rate)
1003{
1004 struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
1005 u32 value, div;
1006
1007 value = readl(&clkrst->crc_spare_reg0);
1008 div = ((value >> 2) & 0x3) + 1;
1009
1010 return parent_rate / div;
1011}
1012
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1013void arch_timer_init(void)
1014{
1015 struct sysctr_ctlr *sysctr = (struct sysctr_ctlr *)NV_PA_TSC_BASE;
1016 u32 freq, val;
1017
Thierry Reding97c02d82015-08-20 11:42:20 +0200[diff] [blame]1018 freq = clock_get_rate(CLOCK_ID_CLK_M);
1019 debug("%s: clk_m freq is %dHz [0x%08X]\n", __func__, freq, freq);
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1020
Thierry Reding97c02d82015-08-20 11:42:20 +0200[diff] [blame]1021 if (current_el() == 3)
1022 asm("msr cntfrq_el0, %0\n" : : "r" (freq));
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1023
1024 /* Only Tegra114+ has the System Counter regs */
1025 debug("%s: setting CNTFID0 to 0x%08X\n", __func__, freq);
1026 writel(freq, &sysctr->cntfid0);
1027
1028 val = readl(&sysctr->cntcr);
1029 val |= TSC_CNTCR_ENABLE | TSC_CNTCR_HDBG;
1030 writel(val, &sysctr->cntcr);
1031 debug("%s: TSC CNTCR = 0x%08X\n", __func__, val);
1032}
1033
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1034#define PLLREFE_MISC 0x4c8
1035#define PLLREFE_MISC_LOCK BIT(27)
1036#define PLLREFE_MISC_IDDQ BIT(24)
1037
1038#define PLLREFE_BASE 0x4c4
1039#define PLLREFE_BASE_BYPASS BIT(31)
1040#define PLLREFE_BASE_ENABLE BIT(30)
1041#define PLLREFE_BASE_REF_DIS BIT(29)
1042#define PLLREFE_BASE_KCP(kcp) (((kcp) & 0x3) << 27)
1043#define PLLREFE_BASE_KVCO BIT(26)
1044#define PLLREFE_BASE_DIVP(p) (((p) & 0x1f) << 16)
1045#define PLLREFE_BASE_DIVN(n) (((n) & 0xff) << 8)
1046#define PLLREFE_BASE_DIVM(m) (((m) & 0xff) << 0)
1047
1048static int tegra_pllref_enable(void)
1049{
1050 u32 value;
1051 unsigned long start;
1052
1053 /*
1054 * This sequence comes from Tegra X1 TRM section "Cold Boot, with no
1055 * Recovery Mode or Boot from USB", sub-section "PLLREFE".
1056 */
1057
1058 value = readl(NV_PA_CLK_RST_BASE + PLLREFE_MISC);
1059 value &= ~PLLREFE_MISC_IDDQ;
1060 writel(value, NV_PA_CLK_RST_BASE + PLLREFE_MISC);
1061
1062 udelay(5);
1063
1064 value = PLLREFE_BASE_ENABLE |
1065 PLLREFE_BASE_KCP(0) |
1066 PLLREFE_BASE_DIVP(0) |
1067 PLLREFE_BASE_DIVN(0x41) |
1068 PLLREFE_BASE_DIVM(4);
1069 writel(value, NV_PA_CLK_RST_BASE + PLLREFE_BASE);
1070
1071 debug("waiting for pllrefe lock\n");
1072 start = get_timer(0);
1073 while (get_timer(start) < 250) {
1074 value = readl(NV_PA_CLK_RST_BASE + PLLREFE_MISC);
1075 if (value & PLLREFE_MISC_LOCK)
1076 break;
1077 }
1078 if (!(value & PLLREFE_MISC_LOCK)) {
1079 debug(" timeout\n");
1080 return -ETIMEDOUT;
1081 }
1082 debug(" done\n");
1083
1084 return 0;
1085}
1086
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1087#define PLLE_SS_CNTL 0x68
1088#define PLLE_SS_CNTL_SSCINCINTR(x) (((x) & 0x3f) << 24)
1089#define PLLE_SS_CNTL_SSCINC(x) (((x) & 0xff) << 16)
1090#define PLLE_SS_CNTL_SSCINVERT (1 << 15)
1091#define PLLE_SS_CNTL_SSCCENTER (1 << 14)
1092#define PLLE_SS_CNTL_SSCBYP (1 << 12)
1093#define PLLE_SS_CNTL_INTERP_RESET (1 << 11)
1094#define PLLE_SS_CNTL_BYPASS_SS (1 << 10)
1095#define PLLE_SS_CNTL_SSCMAX(x) (((x) & 0x1ff) << 0)
1096
1097#define PLLE_BASE 0x0e8
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1098#define PLLE_BASE_ENABLE (1 << 31)
1099#define PLLE_BASE_PLDIV_CML(x) (((x) & 0x1f) << 24)
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1100#define PLLE_BASE_NDIV(x) (((x) & 0xff) << 8)
1101#define PLLE_BASE_MDIV(x) (((x) & 0xff) << 0)
1102
1103#define PLLE_MISC 0x0ec
1104#define PLLE_MISC_IDDQ_SWCTL (1 << 14)
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1105#define PLLE_MISC_IDDQ_OVERRIDE_VALUE (1 << 13)
1106#define PLLE_MISC_LOCK (1 << 11)
Stephen Warren8f837592016-03-22 09:45:36 -0600[diff] [blame]1107#define PLLE_PTS (1 << 8)
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1108#define PLLE_MISC_KCP(x) (((x) & 0x3) << 6)
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1109#define PLLE_MISC_VREG_CTRL(x) (((x) & 0x3) << 2)
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1110#define PLLE_MISC_KVCO (1 << 0)
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1111
1112#define PLLE_AUX 0x48c
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1113#define PLLE_AUX_SS_SEQ_INCLUDE (1 << 31)
1114#define PLLE_AUX_REF_SEL_PLLREFE (1 << 28)
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1115#define PLLE_AUX_SEQ_ENABLE (1 << 24)
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1116#define PLLE_AUX_SS_SWCTL (1 << 6)
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1117#define PLLE_AUX_ENABLE_SWCTL (1 << 4)
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1118#define PLLE_AUX_USE_LOCKDET (1 << 3)
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1119
1120int tegra_plle_enable(void)
1121{
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1122 u32 value;
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1123 unsigned long start;
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1124
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1125 /* PLLREF feeds PLLE */
1126 tegra_pllref_enable();
1127
1128 /*
1129 * This sequence comes from Tegra X1 TRM section "Cold Boot, with no
1130 * Recovery Mode or Boot from USB", sub-section "PLLEs".
1131 */
1132
1133 /* 1. Select XTAL as the source */
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1134
1135 value = readl(NV_PA_CLK_RST_BASE + PLLE_AUX);
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1136 value &= ~PLLE_AUX_REF_SEL_PLLREFE;
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1137 writel(value, NV_PA_CLK_RST_BASE + PLLE_AUX);
1138
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1139 value = readl(NV_PA_CLK_RST_BASE + PLLE_MISC);
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1140 value &= ~PLLE_MISC_IDDQ_OVERRIDE_VALUE;
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1141 writel(value, NV_PA_CLK_RST_BASE + PLLE_MISC);
1142
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1143 /* 2. Wait 5 us */
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1144 udelay(5);
1145
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1146 /*
1147 * 3. Program the following registers to generate a low jitter 100MHz
1148 * clock.
1149 */
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1150
1151 value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE);
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1152 value &= ~PLLE_BASE_PLDIV_CML(0x1f);
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1153 value &= ~PLLE_BASE_NDIV(0xff);
1154 value &= ~PLLE_BASE_MDIV(0xff);
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1155 value |= PLLE_BASE_PLDIV_CML(0xe);
1156 value |= PLLE_BASE_NDIV(0x7d);
1157 value |= PLLE_BASE_MDIV(2);
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1158 writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE);
1159
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1160 value = readl(NV_PA_CLK_RST_BASE + PLLE_MISC);
Stephen Warren8f837592016-03-22 09:45:36 -0600[diff] [blame]1161 value |= PLLE_PTS;
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1162 value &= ~PLLE_MISC_KCP(3);
1163 value &= ~PLLE_MISC_VREG_CTRL(3);
1164 value &= ~PLLE_MISC_KVCO;
1165 writel(value, NV_PA_CLK_RST_BASE + PLLE_MISC);
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1166
1167 value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE);
1168 value |= PLLE_BASE_ENABLE;
1169 writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE);
1170
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1171 /* 4. Wait for LOCK */
1172
1173 debug("waiting for plle lock\n");
1174 start = get_timer(0);
1175 while (get_timer(start) < 250) {
1176 value = readl(NV_PA_CLK_RST_BASE + PLLE_MISC);
1177 if (value & PLLE_MISC_LOCK)
1178 break;
1179 }
1180 if (!(value & PLLE_MISC_LOCK)) {
1181 debug(" timeout\n");
1182 return -ETIMEDOUT;
1183 }
1184 debug(" done\n");
1185
1186 /* 5. Enable SSA */
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1187
1188 value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1189 value &= ~PLLE_SS_CNTL_SSCINC(0xff);
1190 value |= PLLE_SS_CNTL_SSCINC(1);
1191 value &= ~PLLE_SS_CNTL_SSCINCINTR(0x3f);
1192 value |= PLLE_SS_CNTL_SSCINCINTR(0x23);
1193 value &= ~PLLE_SS_CNTL_SSCMAX(0x1fff);
1194 value |= PLLE_SS_CNTL_SSCMAX(0x21);
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1195 value &= ~PLLE_SS_CNTL_SSCINVERT;
1196 value &= ~PLLE_SS_CNTL_SSCCENTER;
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1197 value &= ~PLLE_SS_CNTL_BYPASS_SS;
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1198 value &= ~PLLE_SS_CNTL_SSCBYP;
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1199 writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
1200
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1201 /* 6. Wait 300 ns */
1202
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1203 udelay(1);
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1204 value &= ~PLLE_SS_CNTL_INTERP_RESET;
1205 writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
1206
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1207 /* 7. Enable HW power sequencer for PLLE */
1208
1209 value = readl(NV_PA_CLK_RST_BASE + PLLE_MISC);
1210 value &= ~PLLE_MISC_IDDQ_SWCTL;
1211 writel(value, NV_PA_CLK_RST_BASE + PLLE_MISC);
1212
1213 value = readl(NV_PA_CLK_RST_BASE + PLLE_AUX);
1214 value &= ~PLLE_AUX_SS_SWCTL;
1215 value &= ~PLLE_AUX_ENABLE_SWCTL;
1216 value |= PLLE_AUX_SS_SEQ_INCLUDE;
1217 value |= PLLE_AUX_USE_LOCKDET;
1218 writel(value, NV_PA_CLK_RST_BASE + PLLE_AUX);
1219
1220 /* 8. Wait 1 us */
1221
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1222 udelay(1);
Stephen Warrendfa551e2015-10-05 16:58:52 -0600[diff] [blame]1223 value |= PLLE_AUX_SEQ_ENABLE;
1224 writel(value, NV_PA_CLK_RST_BASE + PLLE_AUX);
Tom Warren6c43f6c2015-02-02 13:22:29 -0700[diff] [blame]1225
1226 return 0;
1227}