1 /*
2  * (C) Copyright 2010-2015
3  * NVIDIA Corporation <www.nvidia.com>
4  *
5  * SPDX-License-Identifier:     GPL-2.0+
6  */
7 
8 /* Tegra114 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 Tegra114 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  */
34 enum 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_PCMT16,
41 	CLOCK_TYPE_PDCT,
42 	CLOCK_TYPE_ACPT,
43 	CLOCK_TYPE_ASPTE,
44 	CLOCK_TYPE_PMDACD2T,
45 	CLOCK_TYPE_PCST,
46 
47 	CLOCK_TYPE_COUNT,
48 	CLOCK_TYPE_NONE = -1,   /* invalid clock type */
49 };
50 
51 enum {
52 	CLOCK_MAX_MUX   = 8     /* number of source options for each clock */
53 };
54 
55 /*
56  * Clock source mux for each clock type. This just converts our enum into
57  * a list of mux sources for use by the code.
58  *
59  * Note:
60  *  The extra column in each clock source array is used to store the mask
61  *  bits in its register for the source.
62  */
63 #define CLK(x) CLOCK_ID_ ## x
64 static enum clock_id clock_source[CLOCK_TYPE_COUNT][CLOCK_MAX_MUX+1] = {
65 	{ CLK(AUDIO),	CLK(XCPU),	CLK(PERIPH),	CLK(OSC),
66 		CLK(NONE),	CLK(NONE),	CLK(NONE),	CLK(NONE),
67 		MASK_BITS_31_30},
68 	{ CLK(MEMORY),	CLK(CGENERAL),	CLK(PERIPH),	CLK(AUDIO),
69 		CLK(NONE),	CLK(NONE),	CLK(NONE),	CLK(NONE),
70 		MASK_BITS_31_30},
71 	{ CLK(MEMORY),	CLK(CGENERAL),	CLK(PERIPH),	CLK(OSC),
72 		CLK(NONE),	CLK(NONE),	CLK(NONE),	CLK(NONE),
73 		MASK_BITS_31_30},
74 	{ CLK(PERIPH),	CLK(CGENERAL),	CLK(MEMORY),	CLK(NONE),
75 		CLK(NONE),	CLK(NONE),	CLK(NONE),	CLK(NONE),
76 		MASK_BITS_31_30},
77 	{ CLK(PERIPH),	CLK(CGENERAL),	CLK(MEMORY),	CLK(OSC),
78 		CLK(NONE),	CLK(NONE),	CLK(NONE),	CLK(NONE),
79 		MASK_BITS_31_30},
80 	{ CLK(PERIPH),	CLK(CGENERAL),	CLK(MEMORY),	CLK(OSC),
81 		CLK(NONE),	CLK(NONE),	CLK(NONE),	CLK(NONE),
82 		MASK_BITS_31_30},
83 	{ CLK(PERIPH),	CLK(DISPLAY),	CLK(CGENERAL),	CLK(OSC),
84 		CLK(NONE),	CLK(NONE),	CLK(NONE),	CLK(NONE),
85 		MASK_BITS_31_30},
86 	{ CLK(AUDIO),	CLK(CGENERAL),	CLK(PERIPH),	CLK(OSC),
87 		CLK(NONE),	CLK(NONE),	CLK(NONE),	CLK(NONE),
88 		MASK_BITS_31_30},
89 	{ CLK(AUDIO),	CLK(SFROM32KHZ),	CLK(PERIPH),	CLK(OSC),
90 		CLK(EPCI),	CLK(NONE),	CLK(NONE),	CLK(NONE),
91 		MASK_BITS_31_29},
92 	{ CLK(PERIPH),	CLK(MEMORY),	CLK(DISPLAY),	CLK(AUDIO),
93 		CLK(CGENERAL),	CLK(DISPLAY2),	CLK(OSC),	CLK(NONE),
94 		MASK_BITS_31_29},
95 	{ CLK(PERIPH),	CLK(CGENERAL),	CLK(SFROM32KHZ),	CLK(OSC),
96 		CLK(NONE),	CLK(NONE),	CLK(NONE),	CLK(NONE),
97 		MASK_BITS_31_28}
98 };
99 
100 /*
101  * Clock type for each peripheral clock source. We put the name in each
102  * record just so it is easy to match things up
103  */
104 #define TYPE(name, type) type
105 static enum clock_type_id clock_periph_type[PERIPHC_COUNT] = {
106 	/* 0x00 */
107 	TYPE(PERIPHC_I2S1,	CLOCK_TYPE_AXPT),
108 	TYPE(PERIPHC_I2S2,	CLOCK_TYPE_AXPT),
109 	TYPE(PERIPHC_SPDIF_OUT,	CLOCK_TYPE_AXPT),
110 	TYPE(PERIPHC_SPDIF_IN,	CLOCK_TYPE_PCM),
111 	TYPE(PERIPHC_PWM,	CLOCK_TYPE_PCST),  /* only PWM uses b29:28 */
112 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
113 	TYPE(PERIPHC_SBC2,	CLOCK_TYPE_PCMT),
114 	TYPE(PERIPHC_SBC3,	CLOCK_TYPE_PCMT),
115 
116 	/* 0x08 */
117 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
118 	TYPE(PERIPHC_I2C1,	CLOCK_TYPE_PCMT16),
119 	TYPE(PERIPHC_I2C5,	CLOCK_TYPE_PCMT16),
120 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
121 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
122 	TYPE(PERIPHC_SBC1,	CLOCK_TYPE_PCMT),
123 	TYPE(PERIPHC_DISP1,	CLOCK_TYPE_PMDACD2T),
124 	TYPE(PERIPHC_DISP2,	CLOCK_TYPE_PMDACD2T),
125 
126 	/* 0x10 */
127 	TYPE(PERIPHC_CVE,	CLOCK_TYPE_PDCT),
128 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
129 	TYPE(PERIPHC_VI,	CLOCK_TYPE_MCPA),
130 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
131 	TYPE(PERIPHC_SDMMC1,	CLOCK_TYPE_PCMT),
132 	TYPE(PERIPHC_SDMMC2,	CLOCK_TYPE_PCMT),
133 	TYPE(PERIPHC_G3D,	CLOCK_TYPE_MCPA),
134 	TYPE(PERIPHC_G2D,	CLOCK_TYPE_MCPA),
135 
136 	/* 0x18 */
137 	TYPE(PERIPHC_NDFLASH,	CLOCK_TYPE_PCMT),
138 	TYPE(PERIPHC_SDMMC4,	CLOCK_TYPE_PCMT),
139 	TYPE(PERIPHC_VFIR,	CLOCK_TYPE_PCMT),
140 	TYPE(PERIPHC_EPP,	CLOCK_TYPE_MCPA),
141 	TYPE(PERIPHC_MPE,	CLOCK_TYPE_MCPA),
142 	TYPE(PERIPHC_MIPI,	CLOCK_TYPE_PCMT),	/* MIPI base-band HSI */
143 	TYPE(PERIPHC_UART1,	CLOCK_TYPE_PCMT),
144 	TYPE(PERIPHC_UART2,	CLOCK_TYPE_PCMT),
145 
146 	/* 0x20 */
147 	TYPE(PERIPHC_HOST1X,	CLOCK_TYPE_MCPA),
148 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
149 	TYPE(PERIPHC_TVO,	CLOCK_TYPE_PDCT),
150 	TYPE(PERIPHC_HDMI,	CLOCK_TYPE_PMDACD2T),
151 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
152 	TYPE(PERIPHC_TVDAC,	CLOCK_TYPE_PDCT),
153 	TYPE(PERIPHC_I2C2,	CLOCK_TYPE_PCMT16),
154 	TYPE(PERIPHC_EMC,	CLOCK_TYPE_MCPT),
155 
156 	/* 0x28 */
157 	TYPE(PERIPHC_UART3,	CLOCK_TYPE_PCMT),
158 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
159 	TYPE(PERIPHC_VI,	CLOCK_TYPE_MCPA),
160 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
161 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
162 	TYPE(PERIPHC_SBC4,	CLOCK_TYPE_PCMT),
163 	TYPE(PERIPHC_I2C3,	CLOCK_TYPE_PCMT16),
164 	TYPE(PERIPHC_SDMMC3,	CLOCK_TYPE_PCMT),
165 
166 	/* 0x30 */
167 	TYPE(PERIPHC_UART4,	CLOCK_TYPE_PCMT),
168 	TYPE(PERIPHC_UART5,	CLOCK_TYPE_PCMT),
169 	TYPE(PERIPHC_VDE,	CLOCK_TYPE_PCMT),
170 	TYPE(PERIPHC_OWR,	CLOCK_TYPE_PCMT),
171 	TYPE(PERIPHC_NOR,	CLOCK_TYPE_PCMT),
172 	TYPE(PERIPHC_CSITE,	CLOCK_TYPE_PCMT),
173 	TYPE(PERIPHC_I2S0,      CLOCK_TYPE_AXPT),
174 	TYPE(PERIPHC_NONE,      CLOCK_TYPE_NONE),
175 
176 	/* 0x38h */  /* Jumps to reg offset 0x3B0h */
177 	TYPE(PERIPHC_G3D2,      CLOCK_TYPE_MCPA),
178 	TYPE(PERIPHC_MSELECT,   CLOCK_TYPE_PCMT),
179 	TYPE(PERIPHC_TSENSOR,   CLOCK_TYPE_PCST),	/* s/b PCTS */
180 	TYPE(PERIPHC_I2S3,	CLOCK_TYPE_AXPT),
181 	TYPE(PERIPHC_I2S4,	CLOCK_TYPE_AXPT),
182 	TYPE(PERIPHC_I2C4,	CLOCK_TYPE_PCMT16),
183 	TYPE(PERIPHC_SBC5,	CLOCK_TYPE_PCMT),
184 	TYPE(PERIPHC_SBC6,	CLOCK_TYPE_PCMT),
185 
186 	/* 0x40 */
187 	TYPE(PERIPHC_AUDIO,	CLOCK_TYPE_ACPT),
188 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
189 	TYPE(PERIPHC_DAM0,	CLOCK_TYPE_ACPT),
190 	TYPE(PERIPHC_DAM1,	CLOCK_TYPE_ACPT),
191 	TYPE(PERIPHC_DAM2,	CLOCK_TYPE_ACPT),
192 	TYPE(PERIPHC_HDA2CODEC2X, CLOCK_TYPE_PCMT),
193 	TYPE(PERIPHC_ACTMON,	CLOCK_TYPE_PCST),	/* MASK 31:30 */
194 	TYPE(PERIPHC_EXTPERIPH1, CLOCK_TYPE_ASPTE),
195 
196 	/* 0x48 */
197 	TYPE(PERIPHC_EXTPERIPH2, CLOCK_TYPE_ASPTE),
198 	TYPE(PERIPHC_EXTPERIPH3, CLOCK_TYPE_ASPTE),
199 	TYPE(PERIPHC_NANDSPEED,	CLOCK_TYPE_PCMT),
200 	TYPE(PERIPHC_I2CSLOW,	CLOCK_TYPE_PCST),	/* MASK 31:30 */
201 	TYPE(PERIPHC_SYS,	CLOCK_TYPE_NONE),
202 	TYPE(PERIPHC_SPEEDO,	CLOCK_TYPE_PCMT),
203 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
204 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
205 
206 	/* 0x50 */
207 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
208 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
209 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
210 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
211 	TYPE(PERIPHC_SATAOOB,	CLOCK_TYPE_PCMT),	/* offset 0x420h */
212 	TYPE(PERIPHC_SATA,	CLOCK_TYPE_PCMT),
213 	TYPE(PERIPHC_HDA,	CLOCK_TYPE_PCMT),
214 };
215 
216 /*
217  * This array translates a periph_id to a periphc_internal_id
218  *
219  * Not present/matched up:
220  *	uint vi_sensor;	 _VI_SENSOR_0,		0x1A8
221  *	SPDIF - which is both 0x08 and 0x0c
222  *
223  */
224 #define NONE(name) (-1)
225 #define OFFSET(name, value) PERIPHC_ ## name
226 static s8 periph_id_to_internal_id[PERIPH_ID_COUNT] = {
227 	/* Low word: 31:0 */
228 	NONE(CPU),
229 	NONE(COP),
230 	NONE(TRIGSYS),
231 	NONE(RESERVED3),
232 	NONE(RTC),
233 	NONE(TMR),
234 	PERIPHC_UART1,
235 	PERIPHC_UART2,	/* and vfir 0x68 */
236 
237 	/* 8 */
238 	NONE(GPIO),
239 	PERIPHC_SDMMC2,
240 	NONE(SPDIF),		/* 0x08 and 0x0c, unclear which to use */
241 	PERIPHC_I2S1,
242 	PERIPHC_I2C1,
243 	PERIPHC_NDFLASH,
244 	PERIPHC_SDMMC1,
245 	PERIPHC_SDMMC4,
246 
247 	/* 16 */
248 	NONE(RESERVED16),
249 	PERIPHC_PWM,
250 	PERIPHC_I2S2,
251 	PERIPHC_EPP,
252 	PERIPHC_VI,
253 	PERIPHC_G2D,
254 	NONE(USBD),
255 	NONE(ISP),
256 
257 	/* 24 */
258 	PERIPHC_G3D,
259 	NONE(RESERVED25),
260 	PERIPHC_DISP2,
261 	PERIPHC_DISP1,
262 	PERIPHC_HOST1X,
263 	NONE(VCP),
264 	PERIPHC_I2S0,
265 	NONE(CACHE2),
266 
267 	/* Middle word: 63:32 */
268 	NONE(MEM),
269 	NONE(AHBDMA),
270 	NONE(APBDMA),
271 	NONE(RESERVED35),
272 	NONE(RESERVED36),
273 	NONE(STAT_MON),
274 	NONE(RESERVED38),
275 	NONE(RESERVED39),
276 
277 	/* 40 */
278 	NONE(KFUSE),
279 	NONE(SBC1),	/* SBC1, 0x34, is this SPI1? */
280 	PERIPHC_NOR,
281 	NONE(RESERVED43),
282 	PERIPHC_SBC2,
283 	NONE(RESERVED45),
284 	PERIPHC_SBC3,
285 	PERIPHC_I2C5,
286 
287 	/* 48 */
288 	NONE(DSI),
289 	PERIPHC_TVO,	/* also CVE 0x40 */
290 	PERIPHC_MIPI,
291 	PERIPHC_HDMI,
292 	NONE(CSI),
293 	PERIPHC_TVDAC,
294 	PERIPHC_I2C2,
295 	PERIPHC_UART3,
296 
297 	/* 56 */
298 	NONE(RESERVED56),
299 	PERIPHC_EMC,
300 	NONE(USB2),
301 	NONE(USB3),
302 	PERIPHC_MPE,
303 	PERIPHC_VDE,
304 	NONE(BSEA),
305 	NONE(BSEV),
306 
307 	/* Upper word 95:64 */
308 	PERIPHC_SPEEDO,
309 	PERIPHC_UART4,
310 	PERIPHC_UART5,
311 	PERIPHC_I2C3,
312 	PERIPHC_SBC4,
313 	PERIPHC_SDMMC3,
314 	NONE(PCIE),
315 	PERIPHC_OWR,
316 
317 	/* 72 */
318 	NONE(AFI),
319 	PERIPHC_CSITE,
320 	NONE(PCIEXCLK),
321 	NONE(AVPUCQ),
322 	NONE(RESERVED76),
323 	NONE(RESERVED77),
324 	NONE(RESERVED78),
325 	NONE(DTV),
326 
327 	/* 80 */
328 	PERIPHC_NANDSPEED,
329 	PERIPHC_I2CSLOW,
330 	NONE(DSIB),
331 	NONE(RESERVED83),
332 	NONE(IRAMA),
333 	NONE(IRAMB),
334 	NONE(IRAMC),
335 	NONE(IRAMD),
336 
337 	/* 88 */
338 	NONE(CRAM2),
339 	NONE(RESERVED89),
340 	NONE(MDOUBLER),
341 	NONE(RESERVED91),
342 	NONE(SUSOUT),
343 	NONE(RESERVED93),
344 	NONE(RESERVED94),
345 	NONE(RESERVED95),
346 
347 	/* V word: 31:0 */
348 	NONE(CPUG),
349 	NONE(CPULP),
350 	PERIPHC_G3D2,
351 	PERIPHC_MSELECT,
352 	PERIPHC_TSENSOR,
353 	PERIPHC_I2S3,
354 	PERIPHC_I2S4,
355 	PERIPHC_I2C4,
356 
357 	/* 08 */
358 	PERIPHC_SBC5,
359 	PERIPHC_SBC6,
360 	PERIPHC_AUDIO,
361 	NONE(APBIF),
362 	PERIPHC_DAM0,
363 	PERIPHC_DAM1,
364 	PERIPHC_DAM2,
365 	PERIPHC_HDA2CODEC2X,
366 
367 	/* 16 */
368 	NONE(ATOMICS),
369 	NONE(RESERVED17),
370 	NONE(RESERVED18),
371 	NONE(RESERVED19),
372 	NONE(RESERVED20),
373 	NONE(RESERVED21),
374 	NONE(RESERVED22),
375 	PERIPHC_ACTMON,
376 
377 	/* 24 */
378 	NONE(RESERVED24),
379 	NONE(RESERVED25),
380 	NONE(RESERVED26),
381 	NONE(RESERVED27),
382 	PERIPHC_SATA,
383 	PERIPHC_HDA,
384 	NONE(RESERVED30),
385 	NONE(RESERVED31),
386 
387 	/* W word: 31:0 */
388 	NONE(HDA2HDMICODEC),
389 	NONE(RESERVED1_SATACOLD),
390 	NONE(RESERVED2_PCIERX0),
391 	NONE(RESERVED3_PCIERX1),
392 	NONE(RESERVED4_PCIERX2),
393 	NONE(RESERVED5_PCIERX3),
394 	NONE(RESERVED6_PCIERX4),
395 	NONE(RESERVED7_PCIERX5),
396 
397 	/* 40 */
398 	NONE(CEC),
399 	NONE(PCIE2_IOBIST),
400 	NONE(EMC_IOBIST),
401 	NONE(HDMI_IOBIST),
402 	NONE(SATA_IOBIST),
403 	NONE(MIPI_IOBIST),
404 	NONE(EMC1_IOBIST),
405 	NONE(XUSB),
406 
407 	/* 48 */
408 	NONE(CILAB),
409 	NONE(CILCD),
410 	NONE(CILE),
411 	NONE(DSIA_LP),
412 	NONE(DSIB_LP),
413 	NONE(RESERVED21_ENTROPY),
414 	NONE(RESERVED22_W),
415 	NONE(RESERVED23_W),
416 
417 	/* 56 */
418 	NONE(RESERVED24_W),
419 	NONE(AMX0),
420 	NONE(ADX0),
421 	NONE(DVFS),
422 	NONE(XUSB_SS),
423 	NONE(EMC_DLL),
424 	NONE(MC1),
425 	NONE(EMC1),
426 };
427 
428 /*
429  * PLL divider shift/mask tables for all PLL IDs.
430  */
431 struct clk_pll_info tegra_pll_info_table[CLOCK_ID_PLL_COUNT] = {
432 	/*
433 	 * T114: some deviations from T2x/T30.
434 	 * NOTE: If kcp_mask/kvco_mask == 0, they're not used in that PLL (PLLX, etc.)
435 	 *       If lock_ena or lock_det are >31, they're not used in that PLL.
436 	 */
437 
438 	{ .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF,  .p_shift = 20, .p_mask = 0x0F,
439 	  .lock_ena = 24, .lock_det = 27, .kcp_shift = 28, .kcp_mask = 3, .kvco_shift = 27, .kvco_mask = 1 },	/* PLLC */
440 	{ .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF,  .p_shift = 0,  .p_mask = 0,
441 	  .lock_ena = 0,  .lock_det = 27, .kcp_shift = 1, .kcp_mask = 3, .kvco_shift = 0, .kvco_mask = 1 },	/* PLLM */
442 	{ .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
443 	  .lock_ena = 18, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF },	/* PLLP */
444 	{ .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
445 	  .lock_ena = 18, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF },	/* PLLA */
446 	{ .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x01,
447 	  .lock_ena = 22, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF },	/* PLLU */
448 	{ .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
449 	  .lock_ena = 22, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF },	/* PLLD */
450 	{ .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF,  .p_shift = 20, .p_mask = 0x0F,
451 	  .lock_ena = 18, .lock_det = 27, .kcp_shift = 0, .kcp_mask = 0, .kvco_shift = 0, .kvco_mask = 0 },	/* PLLX */
452 	{ .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF,  .p_shift = 0,  .p_mask = 0,
453 	  .lock_ena = 9,  .lock_det = 11, .kcp_shift = 6, .kcp_mask = 3, .kvco_shift = 0, .kvco_mask = 1 },	/* PLLE */
454 	{ .m_shift = 0, .m_mask = 0x0F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
455 	  .lock_ena = 18, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF },	/* PLLS (RESERVED) */
456 };
457 
458 /*
459  * Get the oscillator frequency, from the corresponding hardware configuration
460  * field. Note that T30/T114 support 3 new higher freqs, but we map back
461  * to the old T20 freqs. Support for the higher oscillators is TBD.
462  */
463 enum clock_osc_freq clock_get_osc_freq(void)
464 {
465 	struct clk_rst_ctlr *clkrst =
466 			(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
467 	u32 reg;
468 
469 	reg = readl(&clkrst->crc_osc_ctrl);
470 	reg = (reg & OSC_FREQ_MASK) >> OSC_FREQ_SHIFT;
471 
472 	if (reg & 1)				/* one of the newer freqs */
473 		printf("Warning: OSC_FREQ is unsupported! (%d)\n", reg);
474 
475 	return reg >> 2;	/* Map to most common (T20) freqs */
476 }
477 
478 /* Returns a pointer to the clock source register for a peripheral */
479 u32 *get_periph_source_reg(enum periph_id periph_id)
480 {
481 	struct clk_rst_ctlr *clkrst =
482 		(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
483 	enum periphc_internal_id internal_id;
484 
485 	/* Coresight is a special case */
486 	if (periph_id == PERIPH_ID_CSI)
487 		return &clkrst->crc_clk_src[PERIPH_ID_CSI+1];
488 
489 	assert(periph_id >= PERIPH_ID_FIRST && periph_id < PERIPH_ID_COUNT);
490 	internal_id = periph_id_to_internal_id[periph_id];
491 	assert(internal_id != -1);
492 	if (internal_id >= PERIPHC_VW_FIRST) {
493 		internal_id -= PERIPHC_VW_FIRST;
494 		return &clkrst->crc_clk_src_vw[internal_id];
495 	} else
496 		return &clkrst->crc_clk_src[internal_id];
497 }
498 
499 /**
500  * Given a peripheral ID and the required source clock, this returns which
501  * value should be programmed into the source mux for that peripheral.
502  *
503  * There is special code here to handle the one source type with 5 sources.
504  *
505  * @param periph_id	peripheral to start
506  * @param source	PLL id of required parent clock
507  * @param mux_bits	Set to number of bits in mux register: 2 or 4
508  * @param divider_bits Set to number of divider bits (8 or 16)
509  * @return mux value (0-4, or -1 if not found)
510  */
511 int get_periph_clock_source(enum periph_id periph_id,
512 	enum clock_id parent, int *mux_bits, int *divider_bits)
513 {
514 	enum clock_type_id type;
515 	enum periphc_internal_id internal_id;
516 	int mux;
517 
518 	assert(clock_periph_id_isvalid(periph_id));
519 
520 	internal_id = periph_id_to_internal_id[periph_id];
521 	assert(periphc_internal_id_isvalid(internal_id));
522 
523 	type = clock_periph_type[internal_id];
524 	assert(clock_type_id_isvalid(type));
525 
526 	*mux_bits = clock_source[type][CLOCK_MAX_MUX];
527 
528 	if (type == CLOCK_TYPE_PCMT16)
529 		*divider_bits = 16;
530 	else
531 		*divider_bits = 8;
532 
533 	for (mux = 0; mux < CLOCK_MAX_MUX; mux++)
534 		if (clock_source[type][mux] == parent)
535 			return mux;
536 
537 	/* if we get here, either us or the caller has made a mistake */
538 	printf("Caller requested bad clock: periph=%d, parent=%d\n", periph_id,
539 		parent);
540 	return -1;
541 }
542 
543 void clock_set_enable(enum periph_id periph_id, int enable)
544 {
545 	struct clk_rst_ctlr *clkrst =
546 		(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
547 	u32 *clk;
548 	u32 reg;
549 
550 	/* Enable/disable the clock to this peripheral */
551 	assert(clock_periph_id_isvalid(periph_id));
552 	if ((int)periph_id < (int)PERIPH_ID_VW_FIRST)
553 		clk = &clkrst->crc_clk_out_enb[PERIPH_REG(periph_id)];
554 	else
555 		clk = &clkrst->crc_clk_out_enb_vw[PERIPH_REG(periph_id)];
556 	reg = readl(clk);
557 	if (enable)
558 		reg |= PERIPH_MASK(periph_id);
559 	else
560 		reg &= ~PERIPH_MASK(periph_id);
561 	writel(reg, clk);
562 }
563 
564 void reset_set_enable(enum periph_id periph_id, int enable)
565 {
566 	struct clk_rst_ctlr *clkrst =
567 		(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
568 	u32 *reset;
569 	u32 reg;
570 
571 	/* Enable/disable reset to the peripheral */
572 	assert(clock_periph_id_isvalid(periph_id));
573 	if (periph_id < PERIPH_ID_VW_FIRST)
574 		reset = &clkrst->crc_rst_dev[PERIPH_REG(periph_id)];
575 	else
576 		reset = &clkrst->crc_rst_dev_vw[PERIPH_REG(periph_id)];
577 	reg = readl(reset);
578 	if (enable)
579 		reg |= PERIPH_MASK(periph_id);
580 	else
581 		reg &= ~PERIPH_MASK(periph_id);
582 	writel(reg, reset);
583 }
584 
585 #ifdef CONFIG_OF_CONTROL
586 /*
587  * Convert a device tree clock ID to our peripheral ID. They are mostly
588  * the same but we are very cautious so we check that a valid clock ID is
589  * provided.
590  *
591  * @param clk_id    Clock ID according to tegra114 device tree binding
592  * @return peripheral ID, or PERIPH_ID_NONE if the clock ID is invalid
593  */
594 enum periph_id clk_id_to_periph_id(int clk_id)
595 {
596 	if (clk_id > PERIPH_ID_COUNT)
597 		return PERIPH_ID_NONE;
598 
599 	switch (clk_id) {
600 	case PERIPH_ID_RESERVED3:
601 	case PERIPH_ID_RESERVED16:
602 	case PERIPH_ID_RESERVED24:
603 	case PERIPH_ID_RESERVED35:
604 	case PERIPH_ID_RESERVED43:
605 	case PERIPH_ID_RESERVED45:
606 	case PERIPH_ID_RESERVED56:
607 	case PERIPH_ID_RESERVED76:
608 	case PERIPH_ID_RESERVED77:
609 	case PERIPH_ID_RESERVED78:
610 	case PERIPH_ID_RESERVED83:
611 	case PERIPH_ID_RESERVED89:
612 	case PERIPH_ID_RESERVED91:
613 	case PERIPH_ID_RESERVED93:
614 	case PERIPH_ID_RESERVED94:
615 	case PERIPH_ID_RESERVED95:
616 		return PERIPH_ID_NONE;
617 	default:
618 		return clk_id;
619 	}
620 }
621 #endif /* CONFIG_OF_CONTROL */
622 
623 void clock_early_init(void)
624 {
625 	struct clk_rst_ctlr *clkrst =
626 		(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
627 	struct clk_pll_info *pllinfo;
628 	u32 data;
629 
630 	tegra30_set_up_pllp();
631 
632 	/*
633 	 * PLLC output frequency set to 600Mhz
634 	 * PLLD output frequency set to 925Mhz
635 	 */
636 	switch (clock_get_osc_freq()) {
637 	case CLOCK_OSC_FREQ_12_0: /* OSC is 12Mhz */
638 		clock_set_rate(CLOCK_ID_CGENERAL, 600, 12, 0, 8);
639 		clock_set_rate(CLOCK_ID_DISPLAY, 925, 12, 0, 12);
640 		break;
641 
642 	case CLOCK_OSC_FREQ_26_0: /* OSC is 26Mhz */
643 		clock_set_rate(CLOCK_ID_CGENERAL, 600, 26, 0, 8);
644 		clock_set_rate(CLOCK_ID_DISPLAY, 925, 26, 0, 12);
645 		break;
646 
647 	case CLOCK_OSC_FREQ_13_0: /* OSC is 13Mhz */
648 		clock_set_rate(CLOCK_ID_CGENERAL, 600, 13, 0, 8);
649 		clock_set_rate(CLOCK_ID_DISPLAY, 925, 13, 0, 12);
650 		break;
651 	case CLOCK_OSC_FREQ_19_2:
652 	default:
653 		/*
654 		 * These are not supported. It is too early to print a
655 		 * message and the UART likely won't work anyway due to the
656 		 * oscillator being wrong.
657 		 */
658 		break;
659 	}
660 
661 	/* PLLC_MISC2: Set dynramp_stepA/B. MISC2 maps to pll_out[1] */
662 	writel(0x00561600, &clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_out[1]);
663 
664 	/* PLLC_MISC: Set LOCK_ENABLE */
665 	pllinfo = &tegra_pll_info_table[CLOCK_ID_CGENERAL];
666 	setbits_le32(&clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_misc, (1 << pllinfo->lock_ena));
667 	udelay(2);
668 
669 	/* PLLD_MISC: Set CLKENABLE, CPCON 12, LFCON 1, and enable lock */
670 	pllinfo = &tegra_pll_info_table[CLOCK_ID_DISPLAY];
671 	data = (12 << pllinfo->kcp_shift) | (1 << pllinfo->kvco_shift);
672 	data |= (1 << PLLD_CLKENABLE) | (1 << pllinfo->lock_ena);
673 	writel(data, &clkrst->crc_pll[CLOCK_ID_DISPLAY].pll_misc);
674 	udelay(2);
675 }
676 
677 void arch_timer_init(void)
678 {
679 	struct sysctr_ctlr *sysctr = (struct sysctr_ctlr *)NV_PA_TSC_BASE;
680 	u32 freq, val;
681 
682 	freq = clock_get_rate(CLOCK_ID_OSC);
683 	debug("%s: osc freq is %dHz [0x%08X]\n", __func__, freq, freq);
684 
685 	/* ARM CNTFRQ */
686 	asm("mcr p15, 0, %0, c14, c0, 0\n" : : "r" (freq));
687 
688 	/* Only T114 has the System Counter regs */
689 	debug("%s: setting CNTFID0 to 0x%08X\n", __func__, freq);
690 	writel(freq, &sysctr->cntfid0);
691 
692 	val = readl(&sysctr->cntcr);
693 	val |= TSC_CNTCR_ENABLE | TSC_CNTCR_HDBG;
694 	writel(val, &sysctr->cntcr);
695 	debug("%s: TSC CNTCR = 0x%08X\n", __func__, val);
696 }
697