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uapi: export ila.h
[deliverable/linux.git] / drivers / clk / tegra / clk-tegra20.c
1 /*
2 * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17 #include <linux/io.h>
18 #include <linux/clk-provider.h>
19 #include <linux/clkdev.h>
20 #include <linux/of.h>
21 #include <linux/of_address.h>
22 #include <linux/clk/tegra.h>
23 #include <linux/delay.h>
24 #include <dt-bindings/clock/tegra20-car.h>
25
26 #include "clk.h"
27 #include "clk-id.h"
28
29 #define OSC_CTRL 0x50
30 #define OSC_CTRL_OSC_FREQ_MASK (3<<30)
31 #define OSC_CTRL_OSC_FREQ_13MHZ (0<<30)
32 #define OSC_CTRL_OSC_FREQ_19_2MHZ (1<<30)
33 #define OSC_CTRL_OSC_FREQ_12MHZ (2<<30)
34 #define OSC_CTRL_OSC_FREQ_26MHZ (3<<30)
35 #define OSC_CTRL_MASK (0x3f2 | OSC_CTRL_OSC_FREQ_MASK)
36
37 #define OSC_CTRL_PLL_REF_DIV_MASK (3<<28)
38 #define OSC_CTRL_PLL_REF_DIV_1 (0<<28)
39 #define OSC_CTRL_PLL_REF_DIV_2 (1<<28)
40 #define OSC_CTRL_PLL_REF_DIV_4 (2<<28)
41
42 #define OSC_FREQ_DET 0x58
43 #define OSC_FREQ_DET_TRIG (1<<31)
44
45 #define OSC_FREQ_DET_STATUS 0x5c
46 #define OSC_FREQ_DET_BUSY (1<<31)
47 #define OSC_FREQ_DET_CNT_MASK 0xFFFF
48
49 #define TEGRA20_CLK_PERIPH_BANKS 3
50
51 #define PLLS_BASE 0xf0
52 #define PLLS_MISC 0xf4
53 #define PLLC_BASE 0x80
54 #define PLLC_MISC 0x8c
55 #define PLLM_BASE 0x90
56 #define PLLM_MISC 0x9c
57 #define PLLP_BASE 0xa0
58 #define PLLP_MISC 0xac
59 #define PLLA_BASE 0xb0
60 #define PLLA_MISC 0xbc
61 #define PLLU_BASE 0xc0
62 #define PLLU_MISC 0xcc
63 #define PLLD_BASE 0xd0
64 #define PLLD_MISC 0xdc
65 #define PLLX_BASE 0xe0
66 #define PLLX_MISC 0xe4
67 #define PLLE_BASE 0xe8
68 #define PLLE_MISC 0xec
69
70 #define PLL_BASE_LOCK BIT(27)
71 #define PLLE_MISC_LOCK BIT(11)
72
73 #define PLL_MISC_LOCK_ENABLE 18
74 #define PLLDU_MISC_LOCK_ENABLE 22
75 #define PLLE_MISC_LOCK_ENABLE 9
76
77 #define PLLC_OUT 0x84
78 #define PLLM_OUT 0x94
79 #define PLLP_OUTA 0xa4
80 #define PLLP_OUTB 0xa8
81 #define PLLA_OUT 0xb4
82
83 #define CCLK_BURST_POLICY 0x20
84 #define SUPER_CCLK_DIVIDER 0x24
85 #define SCLK_BURST_POLICY 0x28
86 #define SUPER_SCLK_DIVIDER 0x2c
87 #define CLK_SYSTEM_RATE 0x30
88
89 #define CCLK_BURST_POLICY_SHIFT 28
90 #define CCLK_RUN_POLICY_SHIFT 4
91 #define CCLK_IDLE_POLICY_SHIFT 0
92 #define CCLK_IDLE_POLICY 1
93 #define CCLK_RUN_POLICY 2
94 #define CCLK_BURST_POLICY_PLLX 8
95
96 #define CLK_SOURCE_I2S1 0x100
97 #define CLK_SOURCE_I2S2 0x104
98 #define CLK_SOURCE_PWM 0x110
99 #define CLK_SOURCE_SPI 0x114
100 #define CLK_SOURCE_XIO 0x120
101 #define CLK_SOURCE_TWC 0x12c
102 #define CLK_SOURCE_IDE 0x144
103 #define CLK_SOURCE_HDMI 0x18c
104 #define CLK_SOURCE_DISP1 0x138
105 #define CLK_SOURCE_DISP2 0x13c
106 #define CLK_SOURCE_CSITE 0x1d4
107 #define CLK_SOURCE_I2C1 0x124
108 #define CLK_SOURCE_I2C2 0x198
109 #define CLK_SOURCE_I2C3 0x1b8
110 #define CLK_SOURCE_DVC 0x128
111 #define CLK_SOURCE_UARTA 0x178
112 #define CLK_SOURCE_UARTB 0x17c
113 #define CLK_SOURCE_UARTC 0x1a0
114 #define CLK_SOURCE_UARTD 0x1c0
115 #define CLK_SOURCE_UARTE 0x1c4
116 #define CLK_SOURCE_EMC 0x19c
117
118 #define AUDIO_SYNC_CLK 0x38
119
120 /* Tegra CPU clock and reset control regs */
121 #define TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX 0x4c
122 #define TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET 0x340
123 #define TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_CLR 0x344
124
125 #define CPU_CLOCK(cpu) (0x1 << (8 + cpu))
126 #define CPU_RESET(cpu) (0x1111ul << (cpu))
127
128 #ifdef CONFIG_PM_SLEEP
129 static struct cpu_clk_suspend_context {
130 u32 pllx_misc;
131 u32 pllx_base;
132
133 u32 cpu_burst;
134 u32 clk_csite_src;
135 u32 cclk_divider;
136 } tegra20_cpu_clk_sctx;
137 #endif
138
139 static void __iomem *clk_base;
140 static void __iomem *pmc_base;
141
142 static DEFINE_SPINLOCK(emc_lock);
143
144 #define TEGRA_INIT_DATA_MUX(_name, _parents, _offset, \
145 _clk_num, _gate_flags, _clk_id) \
146 TEGRA_INIT_DATA(_name, NULL, NULL, _parents, _offset, \
147 30, 2, 0, 0, 8, 1, TEGRA_DIVIDER_ROUND_UP, \
148 _clk_num, \
149 _gate_flags, _clk_id)
150
151 #define TEGRA_INIT_DATA_DIV16(_name, _parents, _offset, \
152 _clk_num, _gate_flags, _clk_id) \
153 TEGRA_INIT_DATA(_name, NULL, NULL, _parents, _offset, \
154 30, 2, 0, 0, 16, 0, TEGRA_DIVIDER_ROUND_UP, \
155 _clk_num, _gate_flags, \
156 _clk_id)
157
158 #define TEGRA_INIT_DATA_NODIV(_name, _parents, _offset, \
159 _mux_shift, _mux_width, _clk_num, \
160 _gate_flags, _clk_id) \
161 TEGRA_INIT_DATA(_name, NULL, NULL, _parents, _offset, \
162 _mux_shift, _mux_width, 0, 0, 0, 0, 0, \
163 _clk_num, _gate_flags, \
164 _clk_id)
165
166 static struct clk **clks;
167
168 static struct tegra_clk_pll_freq_table pll_c_freq_table[] = {
169 { 12000000, 600000000, 600, 12, 0, 8 },
170 { 13000000, 600000000, 600, 13, 0, 8 },
171 { 19200000, 600000000, 500, 16, 0, 6 },
172 { 26000000, 600000000, 600, 26, 0, 8 },
173 { 0, 0, 0, 0, 0, 0 },
174 };
175
176 static struct tegra_clk_pll_freq_table pll_m_freq_table[] = {
177 { 12000000, 666000000, 666, 12, 0, 8},
178 { 13000000, 666000000, 666, 13, 0, 8},
179 { 19200000, 666000000, 555, 16, 0, 8},
180 { 26000000, 666000000, 666, 26, 0, 8},
181 { 12000000, 600000000, 600, 12, 0, 8},
182 { 13000000, 600000000, 600, 13, 0, 8},
183 { 19200000, 600000000, 375, 12, 0, 6},
184 { 26000000, 600000000, 600, 26, 0, 8},
185 { 0, 0, 0, 0, 0, 0 },
186 };
187
188 static struct tegra_clk_pll_freq_table pll_p_freq_table[] = {
189 { 12000000, 216000000, 432, 12, 1, 8},
190 { 13000000, 216000000, 432, 13, 1, 8},
191 { 19200000, 216000000, 90, 4, 1, 1},
192 { 26000000, 216000000, 432, 26, 1, 8},
193 { 12000000, 432000000, 432, 12, 0, 8},
194 { 13000000, 432000000, 432, 13, 0, 8},
195 { 19200000, 432000000, 90, 4, 0, 1},
196 { 26000000, 432000000, 432, 26, 0, 8},
197 { 0, 0, 0, 0, 0, 0 },
198 };
199
200 static struct tegra_clk_pll_freq_table pll_a_freq_table[] = {
201 { 28800000, 56448000, 49, 25, 0, 1},
202 { 28800000, 73728000, 64, 25, 0, 1},
203 { 28800000, 24000000, 5, 6, 0, 1},
204 { 0, 0, 0, 0, 0, 0 },
205 };
206
207 static struct tegra_clk_pll_freq_table pll_d_freq_table[] = {
208 { 12000000, 216000000, 216, 12, 0, 4},
209 { 13000000, 216000000, 216, 13, 0, 4},
210 { 19200000, 216000000, 135, 12, 0, 3},
211 { 26000000, 216000000, 216, 26, 0, 4},
212
213 { 12000000, 594000000, 594, 12, 0, 8},
214 { 13000000, 594000000, 594, 13, 0, 8},
215 { 19200000, 594000000, 495, 16, 0, 8},
216 { 26000000, 594000000, 594, 26, 0, 8},
217
218 { 12000000, 1000000000, 1000, 12, 0, 12},
219 { 13000000, 1000000000, 1000, 13, 0, 12},
220 { 19200000, 1000000000, 625, 12, 0, 8},
221 { 26000000, 1000000000, 1000, 26, 0, 12},
222
223 { 0, 0, 0, 0, 0, 0 },
224 };
225
226 static struct tegra_clk_pll_freq_table pll_u_freq_table[] = {
227 { 12000000, 480000000, 960, 12, 0, 0},
228 { 13000000, 480000000, 960, 13, 0, 0},
229 { 19200000, 480000000, 200, 4, 0, 0},
230 { 26000000, 480000000, 960, 26, 0, 0},
231 { 0, 0, 0, 0, 0, 0 },
232 };
233
234 static struct tegra_clk_pll_freq_table pll_x_freq_table[] = {
235 /* 1 GHz */
236 { 12000000, 1000000000, 1000, 12, 0, 12},
237 { 13000000, 1000000000, 1000, 13, 0, 12},
238 { 19200000, 1000000000, 625, 12, 0, 8},
239 { 26000000, 1000000000, 1000, 26, 0, 12},
240
241 /* 912 MHz */
242 { 12000000, 912000000, 912, 12, 0, 12},
243 { 13000000, 912000000, 912, 13, 0, 12},
244 { 19200000, 912000000, 760, 16, 0, 8},
245 { 26000000, 912000000, 912, 26, 0, 12},
246
247 /* 816 MHz */
248 { 12000000, 816000000, 816, 12, 0, 12},
249 { 13000000, 816000000, 816, 13, 0, 12},
250 { 19200000, 816000000, 680, 16, 0, 8},
251 { 26000000, 816000000, 816, 26, 0, 12},
252
253 /* 760 MHz */
254 { 12000000, 760000000, 760, 12, 0, 12},
255 { 13000000, 760000000, 760, 13, 0, 12},
256 { 19200000, 760000000, 950, 24, 0, 8},
257 { 26000000, 760000000, 760, 26, 0, 12},
258
259 /* 750 MHz */
260 { 12000000, 750000000, 750, 12, 0, 12},
261 { 13000000, 750000000, 750, 13, 0, 12},
262 { 19200000, 750000000, 625, 16, 0, 8},
263 { 26000000, 750000000, 750, 26, 0, 12},
264
265 /* 608 MHz */
266 { 12000000, 608000000, 608, 12, 0, 12},
267 { 13000000, 608000000, 608, 13, 0, 12},
268 { 19200000, 608000000, 380, 12, 0, 8},
269 { 26000000, 608000000, 608, 26, 0, 12},
270
271 /* 456 MHz */
272 { 12000000, 456000000, 456, 12, 0, 12},
273 { 13000000, 456000000, 456, 13, 0, 12},
274 { 19200000, 456000000, 380, 16, 0, 8},
275 { 26000000, 456000000, 456, 26, 0, 12},
276
277 /* 312 MHz */
278 { 12000000, 312000000, 312, 12, 0, 12},
279 { 13000000, 312000000, 312, 13, 0, 12},
280 { 19200000, 312000000, 260, 16, 0, 8},
281 { 26000000, 312000000, 312, 26, 0, 12},
282
283 { 0, 0, 0, 0, 0, 0 },
284 };
285
286 static struct tegra_clk_pll_freq_table pll_e_freq_table[] = {
287 { 12000000, 100000000, 200, 24, 0, 0 },
288 { 0, 0, 0, 0, 0, 0 },
289 };
290
291 /* PLL parameters */
292 static struct tegra_clk_pll_params pll_c_params = {
293 .input_min = 2000000,
294 .input_max = 31000000,
295 .cf_min = 1000000,
296 .cf_max = 6000000,
297 .vco_min = 20000000,
298 .vco_max = 1400000000,
299 .base_reg = PLLC_BASE,
300 .misc_reg = PLLC_MISC,
301 .lock_mask = PLL_BASE_LOCK,
302 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
303 .lock_delay = 300,
304 .freq_table = pll_c_freq_table,
305 .flags = TEGRA_PLL_HAS_CPCON,
306 };
307
308 static struct tegra_clk_pll_params pll_m_params = {
309 .input_min = 2000000,
310 .input_max = 31000000,
311 .cf_min = 1000000,
312 .cf_max = 6000000,
313 .vco_min = 20000000,
314 .vco_max = 1200000000,
315 .base_reg = PLLM_BASE,
316 .misc_reg = PLLM_MISC,
317 .lock_mask = PLL_BASE_LOCK,
318 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
319 .lock_delay = 300,
320 .freq_table = pll_m_freq_table,
321 .flags = TEGRA_PLL_HAS_CPCON,
322 };
323
324 static struct tegra_clk_pll_params pll_p_params = {
325 .input_min = 2000000,
326 .input_max = 31000000,
327 .cf_min = 1000000,
328 .cf_max = 6000000,
329 .vco_min = 20000000,
330 .vco_max = 1400000000,
331 .base_reg = PLLP_BASE,
332 .misc_reg = PLLP_MISC,
333 .lock_mask = PLL_BASE_LOCK,
334 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
335 .lock_delay = 300,
336 .freq_table = pll_p_freq_table,
337 .flags = TEGRA_PLL_FIXED | TEGRA_PLL_HAS_CPCON,
338 .fixed_rate = 216000000,
339 };
340
341 static struct tegra_clk_pll_params pll_a_params = {
342 .input_min = 2000000,
343 .input_max = 31000000,
344 .cf_min = 1000000,
345 .cf_max = 6000000,
346 .vco_min = 20000000,
347 .vco_max = 1400000000,
348 .base_reg = PLLA_BASE,
349 .misc_reg = PLLA_MISC,
350 .lock_mask = PLL_BASE_LOCK,
351 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
352 .lock_delay = 300,
353 .freq_table = pll_a_freq_table,
354 .flags = TEGRA_PLL_HAS_CPCON,
355 };
356
357 static struct tegra_clk_pll_params pll_d_params = {
358 .input_min = 2000000,
359 .input_max = 40000000,
360 .cf_min = 1000000,
361 .cf_max = 6000000,
362 .vco_min = 40000000,
363 .vco_max = 1000000000,
364 .base_reg = PLLD_BASE,
365 .misc_reg = PLLD_MISC,
366 .lock_mask = PLL_BASE_LOCK,
367 .lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE,
368 .lock_delay = 1000,
369 .freq_table = pll_d_freq_table,
370 .flags = TEGRA_PLL_HAS_CPCON,
371 };
372
373 static struct pdiv_map pllu_p[] = {
374 { .pdiv = 1, .hw_val = 1 },
375 { .pdiv = 2, .hw_val = 0 },
376 { .pdiv = 0, .hw_val = 0 },
377 };
378
379 static struct tegra_clk_pll_params pll_u_params = {
380 .input_min = 2000000,
381 .input_max = 40000000,
382 .cf_min = 1000000,
383 .cf_max = 6000000,
384 .vco_min = 48000000,
385 .vco_max = 960000000,
386 .base_reg = PLLU_BASE,
387 .misc_reg = PLLU_MISC,
388 .lock_mask = PLL_BASE_LOCK,
389 .lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE,
390 .lock_delay = 1000,
391 .pdiv_tohw = pllu_p,
392 .freq_table = pll_u_freq_table,
393 .flags = TEGRA_PLLU | TEGRA_PLL_HAS_CPCON,
394 };
395
396 static struct tegra_clk_pll_params pll_x_params = {
397 .input_min = 2000000,
398 .input_max = 31000000,
399 .cf_min = 1000000,
400 .cf_max = 6000000,
401 .vco_min = 20000000,
402 .vco_max = 1200000000,
403 .base_reg = PLLX_BASE,
404 .misc_reg = PLLX_MISC,
405 .lock_mask = PLL_BASE_LOCK,
406 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
407 .lock_delay = 300,
408 .freq_table = pll_x_freq_table,
409 .flags = TEGRA_PLL_HAS_CPCON,
410 };
411
412 static struct tegra_clk_pll_params pll_e_params = {
413 .input_min = 12000000,
414 .input_max = 12000000,
415 .cf_min = 0,
416 .cf_max = 0,
417 .vco_min = 0,
418 .vco_max = 0,
419 .base_reg = PLLE_BASE,
420 .misc_reg = PLLE_MISC,
421 .lock_mask = PLLE_MISC_LOCK,
422 .lock_enable_bit_idx = PLLE_MISC_LOCK_ENABLE,
423 .lock_delay = 0,
424 .freq_table = pll_e_freq_table,
425 .flags = TEGRA_PLL_FIXED,
426 .fixed_rate = 100000000,
427 };
428
429 static struct tegra_devclk devclks[] __initdata = {
430 { .con_id = "pll_c", .dt_id = TEGRA20_CLK_PLL_C },
431 { .con_id = "pll_c_out1", .dt_id = TEGRA20_CLK_PLL_C_OUT1 },
432 { .con_id = "pll_p", .dt_id = TEGRA20_CLK_PLL_P },
433 { .con_id = "pll_p_out1", .dt_id = TEGRA20_CLK_PLL_P_OUT1 },
434 { .con_id = "pll_p_out2", .dt_id = TEGRA20_CLK_PLL_P_OUT2 },
435 { .con_id = "pll_p_out3", .dt_id = TEGRA20_CLK_PLL_P_OUT3 },
436 { .con_id = "pll_p_out4", .dt_id = TEGRA20_CLK_PLL_P_OUT4 },
437 { .con_id = "pll_m", .dt_id = TEGRA20_CLK_PLL_M },
438 { .con_id = "pll_m_out1", .dt_id = TEGRA20_CLK_PLL_M_OUT1 },
439 { .con_id = "pll_x", .dt_id = TEGRA20_CLK_PLL_X },
440 { .con_id = "pll_u", .dt_id = TEGRA20_CLK_PLL_U },
441 { .con_id = "pll_d", .dt_id = TEGRA20_CLK_PLL_D },
442 { .con_id = "pll_d_out0", .dt_id = TEGRA20_CLK_PLL_D_OUT0 },
443 { .con_id = "pll_a", .dt_id = TEGRA20_CLK_PLL_A },
444 { .con_id = "pll_a_out0", .dt_id = TEGRA20_CLK_PLL_A_OUT0 },
445 { .con_id = "pll_e", .dt_id = TEGRA20_CLK_PLL_E },
446 { .con_id = "cclk", .dt_id = TEGRA20_CLK_CCLK },
447 { .con_id = "sclk", .dt_id = TEGRA20_CLK_SCLK },
448 { .con_id = "hclk", .dt_id = TEGRA20_CLK_HCLK },
449 { .con_id = "pclk", .dt_id = TEGRA20_CLK_PCLK },
450 { .con_id = "fuse", .dt_id = TEGRA20_CLK_FUSE },
451 { .con_id = "twd", .dt_id = TEGRA20_CLK_TWD },
452 { .con_id = "audio", .dt_id = TEGRA20_CLK_AUDIO },
453 { .con_id = "audio_2x", .dt_id = TEGRA20_CLK_AUDIO_2X },
454 { .dev_id = "tegra20-ac97", .dt_id = TEGRA20_CLK_AC97 },
455 { .dev_id = "tegra-apbdma", .dt_id = TEGRA20_CLK_APBDMA },
456 { .dev_id = "rtc-tegra", .dt_id = TEGRA20_CLK_RTC },
457 { .dev_id = "timer", .dt_id = TEGRA20_CLK_TIMER },
458 { .dev_id = "tegra-kbc", .dt_id = TEGRA20_CLK_KBC },
459 { .con_id = "csus", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_CSUS },
460 { .con_id = "vcp", .dev_id = "tegra-avp", .dt_id = TEGRA20_CLK_VCP },
461 { .con_id = "bsea", .dev_id = "tegra-avp", .dt_id = TEGRA20_CLK_BSEA },
462 { .con_id = "bsev", .dev_id = "tegra-aes", .dt_id = TEGRA20_CLK_BSEV },
463 { .con_id = "emc", .dt_id = TEGRA20_CLK_EMC },
464 { .dev_id = "fsl-tegra-udc", .dt_id = TEGRA20_CLK_USBD },
465 { .dev_id = "tegra-ehci.1", .dt_id = TEGRA20_CLK_USB2 },
466 { .dev_id = "tegra-ehci.2", .dt_id = TEGRA20_CLK_USB3 },
467 { .dev_id = "dsi", .dt_id = TEGRA20_CLK_DSI },
468 { .con_id = "csi", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_CSI },
469 { .con_id = "isp", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_ISP },
470 { .con_id = "pex", .dt_id = TEGRA20_CLK_PEX },
471 { .con_id = "afi", .dt_id = TEGRA20_CLK_AFI },
472 { .con_id = "cdev1", .dt_id = TEGRA20_CLK_CDEV1 },
473 { .con_id = "cdev2", .dt_id = TEGRA20_CLK_CDEV2 },
474 { .con_id = "clk_32k", .dt_id = TEGRA20_CLK_CLK_32K },
475 { .con_id = "blink", .dt_id = TEGRA20_CLK_BLINK },
476 { .con_id = "clk_m", .dt_id = TEGRA20_CLK_CLK_M },
477 { .con_id = "pll_ref", .dt_id = TEGRA20_CLK_PLL_REF },
478 { .dev_id = "tegra20-i2s.0", .dt_id = TEGRA20_CLK_I2S1 },
479 { .dev_id = "tegra20-i2s.1", .dt_id = TEGRA20_CLK_I2S2 },
480 { .con_id = "spdif_out", .dev_id = "tegra20-spdif", .dt_id = TEGRA20_CLK_SPDIF_OUT },
481 { .con_id = "spdif_in", .dev_id = "tegra20-spdif", .dt_id = TEGRA20_CLK_SPDIF_IN },
482 { .dev_id = "spi_tegra.0", .dt_id = TEGRA20_CLK_SBC1 },
483 { .dev_id = "spi_tegra.1", .dt_id = TEGRA20_CLK_SBC2 },
484 { .dev_id = "spi_tegra.2", .dt_id = TEGRA20_CLK_SBC3 },
485 { .dev_id = "spi_tegra.3", .dt_id = TEGRA20_CLK_SBC4 },
486 { .dev_id = "spi", .dt_id = TEGRA20_CLK_SPI },
487 { .dev_id = "xio", .dt_id = TEGRA20_CLK_XIO },
488 { .dev_id = "twc", .dt_id = TEGRA20_CLK_TWC },
489 { .dev_id = "ide", .dt_id = TEGRA20_CLK_IDE },
490 { .dev_id = "tegra_nand", .dt_id = TEGRA20_CLK_NDFLASH },
491 { .dev_id = "vfir", .dt_id = TEGRA20_CLK_VFIR },
492 { .dev_id = "csite", .dt_id = TEGRA20_CLK_CSITE },
493 { .dev_id = "la", .dt_id = TEGRA20_CLK_LA },
494 { .dev_id = "tegra_w1", .dt_id = TEGRA20_CLK_OWR },
495 { .dev_id = "mipi", .dt_id = TEGRA20_CLK_MIPI },
496 { .dev_id = "vde", .dt_id = TEGRA20_CLK_VDE },
497 { .con_id = "vi", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_VI },
498 { .dev_id = "epp", .dt_id = TEGRA20_CLK_EPP },
499 { .dev_id = "mpe", .dt_id = TEGRA20_CLK_MPE },
500 { .dev_id = "host1x", .dt_id = TEGRA20_CLK_HOST1X },
501 { .dev_id = "3d", .dt_id = TEGRA20_CLK_GR3D },
502 { .dev_id = "2d", .dt_id = TEGRA20_CLK_GR2D },
503 { .dev_id = "tegra-nor", .dt_id = TEGRA20_CLK_NOR },
504 { .dev_id = "sdhci-tegra.0", .dt_id = TEGRA20_CLK_SDMMC1 },
505 { .dev_id = "sdhci-tegra.1", .dt_id = TEGRA20_CLK_SDMMC2 },
506 { .dev_id = "sdhci-tegra.2", .dt_id = TEGRA20_CLK_SDMMC3 },
507 { .dev_id = "sdhci-tegra.3", .dt_id = TEGRA20_CLK_SDMMC4 },
508 { .dev_id = "cve", .dt_id = TEGRA20_CLK_CVE },
509 { .dev_id = "tvo", .dt_id = TEGRA20_CLK_TVO },
510 { .dev_id = "tvdac", .dt_id = TEGRA20_CLK_TVDAC },
511 { .con_id = "vi_sensor", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_VI_SENSOR },
512 { .dev_id = "hdmi", .dt_id = TEGRA20_CLK_HDMI },
513 { .con_id = "div-clk", .dev_id = "tegra-i2c.0", .dt_id = TEGRA20_CLK_I2C1 },
514 { .con_id = "div-clk", .dev_id = "tegra-i2c.1", .dt_id = TEGRA20_CLK_I2C2 },
515 { .con_id = "div-clk", .dev_id = "tegra-i2c.2", .dt_id = TEGRA20_CLK_I2C3 },
516 { .con_id = "div-clk", .dev_id = "tegra-i2c.3", .dt_id = TEGRA20_CLK_DVC },
517 { .dev_id = "tegra-pwm", .dt_id = TEGRA20_CLK_PWM },
518 { .dev_id = "tegra_uart.0", .dt_id = TEGRA20_CLK_UARTA },
519 { .dev_id = "tegra_uart.1", .dt_id = TEGRA20_CLK_UARTB },
520 { .dev_id = "tegra_uart.2", .dt_id = TEGRA20_CLK_UARTC },
521 { .dev_id = "tegra_uart.3", .dt_id = TEGRA20_CLK_UARTD },
522 { .dev_id = "tegra_uart.4", .dt_id = TEGRA20_CLK_UARTE },
523 { .dev_id = "tegradc.0", .dt_id = TEGRA20_CLK_DISP1 },
524 { .dev_id = "tegradc.1", .dt_id = TEGRA20_CLK_DISP2 },
525 };
526
527 static struct tegra_clk tegra20_clks[tegra_clk_max] __initdata = {
528 [tegra_clk_spdif_out] = { .dt_id = TEGRA20_CLK_SPDIF_OUT, .present = true },
529 [tegra_clk_spdif_in] = { .dt_id = TEGRA20_CLK_SPDIF_IN, .present = true },
530 [tegra_clk_sdmmc1] = { .dt_id = TEGRA20_CLK_SDMMC1, .present = true },
531 [tegra_clk_sdmmc2] = { .dt_id = TEGRA20_CLK_SDMMC2, .present = true },
532 [tegra_clk_sdmmc3] = { .dt_id = TEGRA20_CLK_SDMMC3, .present = true },
533 [tegra_clk_sdmmc4] = { .dt_id = TEGRA20_CLK_SDMMC4, .present = true },
534 [tegra_clk_la] = { .dt_id = TEGRA20_CLK_LA, .present = true },
535 [tegra_clk_csite] = { .dt_id = TEGRA20_CLK_CSITE, .present = true },
536 [tegra_clk_vfir] = { .dt_id = TEGRA20_CLK_VFIR, .present = true },
537 [tegra_clk_mipi] = { .dt_id = TEGRA20_CLK_MIPI, .present = true },
538 [tegra_clk_nor] = { .dt_id = TEGRA20_CLK_NOR, .present = true },
539 [tegra_clk_rtc] = { .dt_id = TEGRA20_CLK_RTC, .present = true },
540 [tegra_clk_timer] = { .dt_id = TEGRA20_CLK_TIMER, .present = true },
541 [tegra_clk_kbc] = { .dt_id = TEGRA20_CLK_KBC, .present = true },
542 [tegra_clk_csus] = { .dt_id = TEGRA20_CLK_CSUS, .present = true },
543 [tegra_clk_vcp] = { .dt_id = TEGRA20_CLK_VCP, .present = true },
544 [tegra_clk_bsea] = { .dt_id = TEGRA20_CLK_BSEA, .present = true },
545 [tegra_clk_bsev] = { .dt_id = TEGRA20_CLK_BSEV, .present = true },
546 [tegra_clk_usbd] = { .dt_id = TEGRA20_CLK_USBD, .present = true },
547 [tegra_clk_usb2] = { .dt_id = TEGRA20_CLK_USB2, .present = true },
548 [tegra_clk_usb3] = { .dt_id = TEGRA20_CLK_USB3, .present = true },
549 [tegra_clk_csi] = { .dt_id = TEGRA20_CLK_CSI, .present = true },
550 [tegra_clk_isp] = { .dt_id = TEGRA20_CLK_ISP, .present = true },
551 [tegra_clk_clk_32k] = { .dt_id = TEGRA20_CLK_CLK_32K, .present = true },
552 [tegra_clk_blink] = { .dt_id = TEGRA20_CLK_BLINK, .present = true },
553 [tegra_clk_hclk] = { .dt_id = TEGRA20_CLK_HCLK, .present = true },
554 [tegra_clk_pclk] = { .dt_id = TEGRA20_CLK_PCLK, .present = true },
555 [tegra_clk_pll_p_out1] = { .dt_id = TEGRA20_CLK_PLL_P_OUT1, .present = true },
556 [tegra_clk_pll_p_out2] = { .dt_id = TEGRA20_CLK_PLL_P_OUT2, .present = true },
557 [tegra_clk_pll_p_out3] = { .dt_id = TEGRA20_CLK_PLL_P_OUT3, .present = true },
558 [tegra_clk_pll_p_out4] = { .dt_id = TEGRA20_CLK_PLL_P_OUT4, .present = true },
559 [tegra_clk_pll_p] = { .dt_id = TEGRA20_CLK_PLL_P, .present = true },
560 [tegra_clk_owr] = { .dt_id = TEGRA20_CLK_OWR, .present = true },
561 [tegra_clk_sbc1] = { .dt_id = TEGRA20_CLK_SBC1, .present = true },
562 [tegra_clk_sbc2] = { .dt_id = TEGRA20_CLK_SBC2, .present = true },
563 [tegra_clk_sbc3] = { .dt_id = TEGRA20_CLK_SBC3, .present = true },
564 [tegra_clk_sbc4] = { .dt_id = TEGRA20_CLK_SBC4, .present = true },
565 [tegra_clk_vde] = { .dt_id = TEGRA20_CLK_VDE, .present = true },
566 [tegra_clk_vi] = { .dt_id = TEGRA20_CLK_VI, .present = true },
567 [tegra_clk_epp] = { .dt_id = TEGRA20_CLK_EPP, .present = true },
568 [tegra_clk_mpe] = { .dt_id = TEGRA20_CLK_MPE, .present = true },
569 [tegra_clk_host1x] = { .dt_id = TEGRA20_CLK_HOST1X, .present = true },
570 [tegra_clk_gr2d] = { .dt_id = TEGRA20_CLK_GR2D, .present = true },
571 [tegra_clk_gr3d] = { .dt_id = TEGRA20_CLK_GR3D, .present = true },
572 [tegra_clk_ndflash] = { .dt_id = TEGRA20_CLK_NDFLASH, .present = true },
573 [tegra_clk_cve] = { .dt_id = TEGRA20_CLK_CVE, .present = true },
574 [tegra_clk_tvo] = { .dt_id = TEGRA20_CLK_TVO, .present = true },
575 [tegra_clk_tvdac] = { .dt_id = TEGRA20_CLK_TVDAC, .present = true },
576 [tegra_clk_vi_sensor] = { .dt_id = TEGRA20_CLK_VI_SENSOR, .present = true },
577 [tegra_clk_afi] = { .dt_id = TEGRA20_CLK_AFI, .present = true },
578 [tegra_clk_fuse] = { .dt_id = TEGRA20_CLK_FUSE, .present = true },
579 [tegra_clk_kfuse] = { .dt_id = TEGRA20_CLK_KFUSE, .present = true },
580 };
581
582 static unsigned long tegra20_clk_measure_input_freq(void)
583 {
584 u32 osc_ctrl = readl_relaxed(clk_base + OSC_CTRL);
585 u32 auto_clk_control = osc_ctrl & OSC_CTRL_OSC_FREQ_MASK;
586 u32 pll_ref_div = osc_ctrl & OSC_CTRL_PLL_REF_DIV_MASK;
587 unsigned long input_freq;
588
589 switch (auto_clk_control) {
590 case OSC_CTRL_OSC_FREQ_12MHZ:
591 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1);
592 input_freq = 12000000;
593 break;
594 case OSC_CTRL_OSC_FREQ_13MHZ:
595 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1);
596 input_freq = 13000000;
597 break;
598 case OSC_CTRL_OSC_FREQ_19_2MHZ:
599 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1);
600 input_freq = 19200000;
601 break;
602 case OSC_CTRL_OSC_FREQ_26MHZ:
603 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1);
604 input_freq = 26000000;
605 break;
606 default:
607 pr_err("Unexpected clock autodetect value %d",
608 auto_clk_control);
609 BUG();
610 return 0;
611 }
612
613 return input_freq;
614 }
615
616 static unsigned int tegra20_get_pll_ref_div(void)
617 {
618 u32 pll_ref_div = readl_relaxed(clk_base + OSC_CTRL) &
619 OSC_CTRL_PLL_REF_DIV_MASK;
620
621 switch (pll_ref_div) {
622 case OSC_CTRL_PLL_REF_DIV_1:
623 return 1;
624 case OSC_CTRL_PLL_REF_DIV_2:
625 return 2;
626 case OSC_CTRL_PLL_REF_DIV_4:
627 return 4;
628 default:
629 pr_err("Invalied pll ref divider %d\n", pll_ref_div);
630 BUG();
631 }
632 return 0;
633 }
634
635 static void tegra20_pll_init(void)
636 {
637 struct clk *clk;
638
639 /* PLLC */
640 clk = tegra_clk_register_pll("pll_c", "pll_ref", clk_base, NULL, 0,
641 &pll_c_params, NULL);
642 clks[TEGRA20_CLK_PLL_C] = clk;
643
644 /* PLLC_OUT1 */
645 clk = tegra_clk_register_divider("pll_c_out1_div", "pll_c",
646 clk_base + PLLC_OUT, 0, TEGRA_DIVIDER_ROUND_UP,
647 8, 8, 1, NULL);
648 clk = tegra_clk_register_pll_out("pll_c_out1", "pll_c_out1_div",
649 clk_base + PLLC_OUT, 1, 0, CLK_SET_RATE_PARENT,
650 0, NULL);
651 clks[TEGRA20_CLK_PLL_C_OUT1] = clk;
652
653 /* PLLM */
654 clk = tegra_clk_register_pll("pll_m", "pll_ref", clk_base, NULL,
655 CLK_IGNORE_UNUSED | CLK_SET_RATE_GATE,
656 &pll_m_params, NULL);
657 clks[TEGRA20_CLK_PLL_M] = clk;
658
659 /* PLLM_OUT1 */
660 clk = tegra_clk_register_divider("pll_m_out1_div", "pll_m",
661 clk_base + PLLM_OUT, 0, TEGRA_DIVIDER_ROUND_UP,
662 8, 8, 1, NULL);
663 clk = tegra_clk_register_pll_out("pll_m_out1", "pll_m_out1_div",
664 clk_base + PLLM_OUT, 1, 0, CLK_IGNORE_UNUSED |
665 CLK_SET_RATE_PARENT, 0, NULL);
666 clks[TEGRA20_CLK_PLL_M_OUT1] = clk;
667
668 /* PLLX */
669 clk = tegra_clk_register_pll("pll_x", "pll_ref", clk_base, NULL, 0,
670 &pll_x_params, NULL);
671 clks[TEGRA20_CLK_PLL_X] = clk;
672
673 /* PLLU */
674 clk = tegra_clk_register_pll("pll_u", "pll_ref", clk_base, NULL, 0,
675 &pll_u_params, NULL);
676 clks[TEGRA20_CLK_PLL_U] = clk;
677
678 /* PLLD */
679 clk = tegra_clk_register_pll("pll_d", "pll_ref", clk_base, NULL, 0,
680 &pll_d_params, NULL);
681 clks[TEGRA20_CLK_PLL_D] = clk;
682
683 /* PLLD_OUT0 */
684 clk = clk_register_fixed_factor(NULL, "pll_d_out0", "pll_d",
685 CLK_SET_RATE_PARENT, 1, 2);
686 clks[TEGRA20_CLK_PLL_D_OUT0] = clk;
687
688 /* PLLA */
689 clk = tegra_clk_register_pll("pll_a", "pll_p_out1", clk_base, NULL, 0,
690 &pll_a_params, NULL);
691 clks[TEGRA20_CLK_PLL_A] = clk;
692
693 /* PLLA_OUT0 */
694 clk = tegra_clk_register_divider("pll_a_out0_div", "pll_a",
695 clk_base + PLLA_OUT, 0, TEGRA_DIVIDER_ROUND_UP,
696 8, 8, 1, NULL);
697 clk = tegra_clk_register_pll_out("pll_a_out0", "pll_a_out0_div",
698 clk_base + PLLA_OUT, 1, 0, CLK_IGNORE_UNUSED |
699 CLK_SET_RATE_PARENT, 0, NULL);
700 clks[TEGRA20_CLK_PLL_A_OUT0] = clk;
701
702 /* PLLE */
703 clk = tegra_clk_register_plle("pll_e", "pll_ref", clk_base, pmc_base,
704 0, &pll_e_params, NULL);
705 clks[TEGRA20_CLK_PLL_E] = clk;
706 }
707
708 static const char *cclk_parents[] = { "clk_m", "pll_c", "clk_32k", "pll_m",
709 "pll_p", "pll_p_out4",
710 "pll_p_out3", "clk_d", "pll_x" };
711 static const char *sclk_parents[] = { "clk_m", "pll_c_out1", "pll_p_out4",
712 "pll_p_out3", "pll_p_out2", "clk_d",
713 "clk_32k", "pll_m_out1" };
714
715 static void tegra20_super_clk_init(void)
716 {
717 struct clk *clk;
718
719 /* CCLK */
720 clk = tegra_clk_register_super_mux("cclk", cclk_parents,
721 ARRAY_SIZE(cclk_parents), CLK_SET_RATE_PARENT,
722 clk_base + CCLK_BURST_POLICY, 0, 4, 0, 0, NULL);
723 clks[TEGRA20_CLK_CCLK] = clk;
724
725 /* SCLK */
726 clk = tegra_clk_register_super_mux("sclk", sclk_parents,
727 ARRAY_SIZE(sclk_parents), CLK_SET_RATE_PARENT,
728 clk_base + SCLK_BURST_POLICY, 0, 4, 0, 0, NULL);
729 clks[TEGRA20_CLK_SCLK] = clk;
730
731 /* twd */
732 clk = clk_register_fixed_factor(NULL, "twd", "cclk", 0, 1, 4);
733 clks[TEGRA20_CLK_TWD] = clk;
734 }
735
736 static const char *audio_parents[] = {"spdif_in", "i2s1", "i2s2", "unused",
737 "pll_a_out0", "unused", "unused",
738 "unused"};
739
740 static void __init tegra20_audio_clk_init(void)
741 {
742 struct clk *clk;
743
744 /* audio */
745 clk = clk_register_mux(NULL, "audio_mux", audio_parents,
746 ARRAY_SIZE(audio_parents),
747 CLK_SET_RATE_NO_REPARENT,
748 clk_base + AUDIO_SYNC_CLK, 0, 3, 0, NULL);
749 clk = clk_register_gate(NULL, "audio", "audio_mux", 0,
750 clk_base + AUDIO_SYNC_CLK, 4,
751 CLK_GATE_SET_TO_DISABLE, NULL);
752 clks[TEGRA20_CLK_AUDIO] = clk;
753
754 /* audio_2x */
755 clk = clk_register_fixed_factor(NULL, "audio_doubler", "audio",
756 CLK_SET_RATE_PARENT, 2, 1);
757 clk = tegra_clk_register_periph_gate("audio_2x", "audio_doubler",
758 TEGRA_PERIPH_NO_RESET, clk_base,
759 CLK_SET_RATE_PARENT, 89,
760 periph_clk_enb_refcnt);
761 clks[TEGRA20_CLK_AUDIO_2X] = clk;
762
763 }
764
765 static const char *i2s1_parents[] = {"pll_a_out0", "audio_2x", "pll_p",
766 "clk_m"};
767 static const char *i2s2_parents[] = {"pll_a_out0", "audio_2x", "pll_p",
768 "clk_m"};
769 static const char *pwm_parents[] = {"pll_p", "pll_c", "audio", "clk_m",
770 "clk_32k"};
771 static const char *mux_pllpcm_clkm[] = {"pll_p", "pll_c", "pll_m", "clk_m"};
772 static const char *mux_pllpdc_clkm[] = {"pll_p", "pll_d_out0", "pll_c",
773 "clk_m"};
774 static const char *mux_pllmcp_clkm[] = {"pll_m", "pll_c", "pll_p", "clk_m"};
775
776 static struct tegra_periph_init_data tegra_periph_clk_list[] = {
777 TEGRA_INIT_DATA_MUX("i2s1", i2s1_parents, CLK_SOURCE_I2S1, 11, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2S1),
778 TEGRA_INIT_DATA_MUX("i2s2", i2s2_parents, CLK_SOURCE_I2S2, 18, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2S2),
779 TEGRA_INIT_DATA_MUX("spi", mux_pllpcm_clkm, CLK_SOURCE_SPI, 43, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_SPI),
780 TEGRA_INIT_DATA_MUX("xio", mux_pllpcm_clkm, CLK_SOURCE_XIO, 45, 0, TEGRA20_CLK_XIO),
781 TEGRA_INIT_DATA_MUX("twc", mux_pllpcm_clkm, CLK_SOURCE_TWC, 16, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_TWC),
782 TEGRA_INIT_DATA_MUX("ide", mux_pllpcm_clkm, CLK_SOURCE_XIO, 25, 0, TEGRA20_CLK_IDE),
783 TEGRA_INIT_DATA_DIV16("dvc", mux_pllpcm_clkm, CLK_SOURCE_DVC, 47, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_DVC),
784 TEGRA_INIT_DATA_DIV16("i2c1", mux_pllpcm_clkm, CLK_SOURCE_I2C1, 12, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2C1),
785 TEGRA_INIT_DATA_DIV16("i2c2", mux_pllpcm_clkm, CLK_SOURCE_I2C2, 54, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2C2),
786 TEGRA_INIT_DATA_DIV16("i2c3", mux_pllpcm_clkm, CLK_SOURCE_I2C3, 67, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2C3),
787 TEGRA_INIT_DATA_MUX("hdmi", mux_pllpdc_clkm, CLK_SOURCE_HDMI, 51, 0, TEGRA20_CLK_HDMI),
788 TEGRA_INIT_DATA("pwm", NULL, NULL, pwm_parents, CLK_SOURCE_PWM, 28, 3, 0, 0, 8, 1, 0, 17, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_PWM),
789 };
790
791 static struct tegra_periph_init_data tegra_periph_nodiv_clk_list[] = {
792 TEGRA_INIT_DATA_NODIV("uarta", mux_pllpcm_clkm, CLK_SOURCE_UARTA, 30, 2, 6, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTA),
793 TEGRA_INIT_DATA_NODIV("uartb", mux_pllpcm_clkm, CLK_SOURCE_UARTB, 30, 2, 7, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTB),
794 TEGRA_INIT_DATA_NODIV("uartc", mux_pllpcm_clkm, CLK_SOURCE_UARTC, 30, 2, 55, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTC),
795 TEGRA_INIT_DATA_NODIV("uartd", mux_pllpcm_clkm, CLK_SOURCE_UARTD, 30, 2, 65, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTD),
796 TEGRA_INIT_DATA_NODIV("uarte", mux_pllpcm_clkm, CLK_SOURCE_UARTE, 30, 2, 66, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTE),
797 TEGRA_INIT_DATA_NODIV("disp1", mux_pllpdc_clkm, CLK_SOURCE_DISP1, 30, 2, 27, 0, TEGRA20_CLK_DISP1),
798 TEGRA_INIT_DATA_NODIV("disp2", mux_pllpdc_clkm, CLK_SOURCE_DISP2, 30, 2, 26, 0, TEGRA20_CLK_DISP2),
799 };
800
801 static void __init tegra20_periph_clk_init(void)
802 {
803 struct tegra_periph_init_data *data;
804 struct clk *clk;
805 int i;
806
807 /* ac97 */
808 clk = tegra_clk_register_periph_gate("ac97", "pll_a_out0",
809 TEGRA_PERIPH_ON_APB,
810 clk_base, 0, 3, periph_clk_enb_refcnt);
811 clks[TEGRA20_CLK_AC97] = clk;
812
813 /* apbdma */
814 clk = tegra_clk_register_periph_gate("apbdma", "pclk", 0, clk_base,
815 0, 34, periph_clk_enb_refcnt);
816 clks[TEGRA20_CLK_APBDMA] = clk;
817
818 /* emc */
819 clk = clk_register_mux(NULL, "emc_mux", mux_pllmcp_clkm,
820 ARRAY_SIZE(mux_pllmcp_clkm),
821 CLK_SET_RATE_NO_REPARENT,
822 clk_base + CLK_SOURCE_EMC,
823 30, 2, 0, &emc_lock);
824 clk = tegra_clk_register_periph_gate("emc", "emc_mux", 0, clk_base, 0,
825 57, periph_clk_enb_refcnt);
826 clks[TEGRA20_CLK_EMC] = clk;
827
828 clk = tegra_clk_register_mc("mc", "emc_mux", clk_base + CLK_SOURCE_EMC,
829 &emc_lock);
830 clks[TEGRA20_CLK_MC] = clk;
831
832 /* dsi */
833 clk = tegra_clk_register_periph_gate("dsi", "pll_d", 0, clk_base, 0,
834 48, periph_clk_enb_refcnt);
835 clk_register_clkdev(clk, NULL, "dsi");
836 clks[TEGRA20_CLK_DSI] = clk;
837
838 /* pex */
839 clk = tegra_clk_register_periph_gate("pex", "clk_m", 0, clk_base, 0, 70,
840 periph_clk_enb_refcnt);
841 clks[TEGRA20_CLK_PEX] = clk;
842
843 /* cdev1 */
844 clk = clk_register_fixed_rate(NULL, "cdev1_fixed", NULL, CLK_IS_ROOT,
845 26000000);
846 clk = tegra_clk_register_periph_gate("cdev1", "cdev1_fixed", 0,
847 clk_base, 0, 94, periph_clk_enb_refcnt);
848 clks[TEGRA20_CLK_CDEV1] = clk;
849
850 /* cdev2 */
851 clk = clk_register_fixed_rate(NULL, "cdev2_fixed", NULL, CLK_IS_ROOT,
852 26000000);
853 clk = tegra_clk_register_periph_gate("cdev2", "cdev2_fixed", 0,
854 clk_base, 0, 93, periph_clk_enb_refcnt);
855 clks[TEGRA20_CLK_CDEV2] = clk;
856
857 for (i = 0; i < ARRAY_SIZE(tegra_periph_clk_list); i++) {
858 data = &tegra_periph_clk_list[i];
859 clk = tegra_clk_register_periph(data->name, data->p.parent_names,
860 data->num_parents, &data->periph,
861 clk_base, data->offset, data->flags);
862 clks[data->clk_id] = clk;
863 }
864
865 for (i = 0; i < ARRAY_SIZE(tegra_periph_nodiv_clk_list); i++) {
866 data = &tegra_periph_nodiv_clk_list[i];
867 clk = tegra_clk_register_periph_nodiv(data->name,
868 data->p.parent_names,
869 data->num_parents, &data->periph,
870 clk_base, data->offset);
871 clks[data->clk_id] = clk;
872 }
873
874 tegra_periph_clk_init(clk_base, pmc_base, tegra20_clks, &pll_p_params);
875 }
876
877 static void __init tegra20_osc_clk_init(void)
878 {
879 struct clk *clk;
880 unsigned long input_freq;
881 unsigned int pll_ref_div;
882
883 input_freq = tegra20_clk_measure_input_freq();
884
885 /* clk_m */
886 clk = clk_register_fixed_rate(NULL, "clk_m", NULL, CLK_IS_ROOT |
887 CLK_IGNORE_UNUSED, input_freq);
888 clks[TEGRA20_CLK_CLK_M] = clk;
889
890 /* pll_ref */
891 pll_ref_div = tegra20_get_pll_ref_div();
892 clk = clk_register_fixed_factor(NULL, "pll_ref", "clk_m",
893 CLK_SET_RATE_PARENT, 1, pll_ref_div);
894 clks[TEGRA20_CLK_PLL_REF] = clk;
895 }
896
897 /* Tegra20 CPU clock and reset control functions */
898 static void tegra20_wait_cpu_in_reset(u32 cpu)
899 {
900 unsigned int reg;
901
902 do {
903 reg = readl(clk_base +
904 TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET);
905 cpu_relax();
906 } while (!(reg & (1 << cpu))); /* check CPU been reset or not */
907
908 return;
909 }
910
911 static void tegra20_put_cpu_in_reset(u32 cpu)
912 {
913 writel(CPU_RESET(cpu),
914 clk_base + TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET);
915 dmb();
916 }
917
918 static void tegra20_cpu_out_of_reset(u32 cpu)
919 {
920 writel(CPU_RESET(cpu),
921 clk_base + TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_CLR);
922 wmb();
923 }
924
925 static void tegra20_enable_cpu_clock(u32 cpu)
926 {
927 unsigned int reg;
928
929 reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
930 writel(reg & ~CPU_CLOCK(cpu),
931 clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
932 barrier();
933 reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
934 }
935
936 static void tegra20_disable_cpu_clock(u32 cpu)
937 {
938 unsigned int reg;
939
940 reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
941 writel(reg | CPU_CLOCK(cpu),
942 clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
943 }
944
945 #ifdef CONFIG_PM_SLEEP
946 static bool tegra20_cpu_rail_off_ready(void)
947 {
948 unsigned int cpu_rst_status;
949
950 cpu_rst_status = readl(clk_base +
951 TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET);
952
953 return !!(cpu_rst_status & 0x2);
954 }
955
956 static void tegra20_cpu_clock_suspend(void)
957 {
958 /* switch coresite to clk_m, save off original source */
959 tegra20_cpu_clk_sctx.clk_csite_src =
960 readl(clk_base + CLK_SOURCE_CSITE);
961 writel(3<<30, clk_base + CLK_SOURCE_CSITE);
962
963 tegra20_cpu_clk_sctx.cpu_burst =
964 readl(clk_base + CCLK_BURST_POLICY);
965 tegra20_cpu_clk_sctx.pllx_base =
966 readl(clk_base + PLLX_BASE);
967 tegra20_cpu_clk_sctx.pllx_misc =
968 readl(clk_base + PLLX_MISC);
969 tegra20_cpu_clk_sctx.cclk_divider =
970 readl(clk_base + SUPER_CCLK_DIVIDER);
971 }
972
973 static void tegra20_cpu_clock_resume(void)
974 {
975 unsigned int reg, policy;
976
977 /* Is CPU complex already running on PLLX? */
978 reg = readl(clk_base + CCLK_BURST_POLICY);
979 policy = (reg >> CCLK_BURST_POLICY_SHIFT) & 0xF;
980
981 if (policy == CCLK_IDLE_POLICY)
982 reg = (reg >> CCLK_IDLE_POLICY_SHIFT) & 0xF;
983 else if (policy == CCLK_RUN_POLICY)
984 reg = (reg >> CCLK_RUN_POLICY_SHIFT) & 0xF;
985 else
986 BUG();
987
988 if (reg != CCLK_BURST_POLICY_PLLX) {
989 /* restore PLLX settings if CPU is on different PLL */
990 writel(tegra20_cpu_clk_sctx.pllx_misc,
991 clk_base + PLLX_MISC);
992 writel(tegra20_cpu_clk_sctx.pllx_base,
993 clk_base + PLLX_BASE);
994
995 /* wait for PLL stabilization if PLLX was enabled */
996 if (tegra20_cpu_clk_sctx.pllx_base & (1 << 30))
997 udelay(300);
998 }
999
1000 /*
1001 * Restore original burst policy setting for calls resulting from CPU
1002 * LP2 in idle or system suspend.
1003 */
1004 writel(tegra20_cpu_clk_sctx.cclk_divider,
1005 clk_base + SUPER_CCLK_DIVIDER);
1006 writel(tegra20_cpu_clk_sctx.cpu_burst,
1007 clk_base + CCLK_BURST_POLICY);
1008
1009 writel(tegra20_cpu_clk_sctx.clk_csite_src,
1010 clk_base + CLK_SOURCE_CSITE);
1011 }
1012 #endif
1013
1014 static struct tegra_cpu_car_ops tegra20_cpu_car_ops = {
1015 .wait_for_reset = tegra20_wait_cpu_in_reset,
1016 .put_in_reset = tegra20_put_cpu_in_reset,
1017 .out_of_reset = tegra20_cpu_out_of_reset,
1018 .enable_clock = tegra20_enable_cpu_clock,
1019 .disable_clock = tegra20_disable_cpu_clock,
1020 #ifdef CONFIG_PM_SLEEP
1021 .rail_off_ready = tegra20_cpu_rail_off_ready,
1022 .suspend = tegra20_cpu_clock_suspend,
1023 .resume = tegra20_cpu_clock_resume,
1024 #endif
1025 };
1026
1027 static struct tegra_clk_init_table init_table[] __initdata = {
1028 {TEGRA20_CLK_PLL_P, TEGRA20_CLK_CLK_MAX, 216000000, 1},
1029 {TEGRA20_CLK_PLL_P_OUT1, TEGRA20_CLK_CLK_MAX, 28800000, 1},
1030 {TEGRA20_CLK_PLL_P_OUT2, TEGRA20_CLK_CLK_MAX, 48000000, 1},
1031 {TEGRA20_CLK_PLL_P_OUT3, TEGRA20_CLK_CLK_MAX, 72000000, 1},
1032 {TEGRA20_CLK_PLL_P_OUT4, TEGRA20_CLK_CLK_MAX, 24000000, 1},
1033 {TEGRA20_CLK_PLL_C, TEGRA20_CLK_CLK_MAX, 600000000, 1},
1034 {TEGRA20_CLK_PLL_C_OUT1, TEGRA20_CLK_CLK_MAX, 120000000, 1},
1035 {TEGRA20_CLK_SCLK, TEGRA20_CLK_PLL_C_OUT1, 0, 1},
1036 {TEGRA20_CLK_HCLK, TEGRA20_CLK_CLK_MAX, 0, 1},
1037 {TEGRA20_CLK_PCLK, TEGRA20_CLK_CLK_MAX, 60000000, 1},
1038 {TEGRA20_CLK_CSITE, TEGRA20_CLK_CLK_MAX, 0, 1},
1039 {TEGRA20_CLK_EMC, TEGRA20_CLK_CLK_MAX, 0, 1},
1040 {TEGRA20_CLK_CCLK, TEGRA20_CLK_CLK_MAX, 0, 1},
1041 {TEGRA20_CLK_UARTA, TEGRA20_CLK_PLL_P, 0, 0},
1042 {TEGRA20_CLK_UARTB, TEGRA20_CLK_PLL_P, 0, 0},
1043 {TEGRA20_CLK_UARTC, TEGRA20_CLK_PLL_P, 0, 0},
1044 {TEGRA20_CLK_UARTD, TEGRA20_CLK_PLL_P, 0, 0},
1045 {TEGRA20_CLK_UARTE, TEGRA20_CLK_PLL_P, 0, 0},
1046 {TEGRA20_CLK_PLL_A, TEGRA20_CLK_CLK_MAX, 56448000, 1},
1047 {TEGRA20_CLK_PLL_A_OUT0, TEGRA20_CLK_CLK_MAX, 11289600, 1},
1048 {TEGRA20_CLK_CDEV1, TEGRA20_CLK_CLK_MAX, 0, 1},
1049 {TEGRA20_CLK_BLINK, TEGRA20_CLK_CLK_MAX, 32768, 1},
1050 {TEGRA20_CLK_I2S1, TEGRA20_CLK_PLL_A_OUT0, 11289600, 0},
1051 {TEGRA20_CLK_I2S2, TEGRA20_CLK_PLL_A_OUT0, 11289600, 0},
1052 {TEGRA20_CLK_SDMMC1, TEGRA20_CLK_PLL_P, 48000000, 0},
1053 {TEGRA20_CLK_SDMMC3, TEGRA20_CLK_PLL_P, 48000000, 0},
1054 {TEGRA20_CLK_SDMMC4, TEGRA20_CLK_PLL_P, 48000000, 0},
1055 {TEGRA20_CLK_SPI, TEGRA20_CLK_PLL_P, 20000000, 0},
1056 {TEGRA20_CLK_SBC1, TEGRA20_CLK_PLL_P, 100000000, 0},
1057 {TEGRA20_CLK_SBC2, TEGRA20_CLK_PLL_P, 100000000, 0},
1058 {TEGRA20_CLK_SBC3, TEGRA20_CLK_PLL_P, 100000000, 0},
1059 {TEGRA20_CLK_SBC4, TEGRA20_CLK_PLL_P, 100000000, 0},
1060 {TEGRA20_CLK_HOST1X, TEGRA20_CLK_PLL_C, 150000000, 0},
1061 {TEGRA20_CLK_DISP1, TEGRA20_CLK_PLL_P, 600000000, 0},
1062 {TEGRA20_CLK_DISP2, TEGRA20_CLK_PLL_P, 600000000, 0},
1063 {TEGRA20_CLK_GR2D, TEGRA20_CLK_PLL_C, 300000000, 0},
1064 {TEGRA20_CLK_GR3D, TEGRA20_CLK_PLL_C, 300000000, 0},
1065 {TEGRA20_CLK_CLK_MAX, TEGRA20_CLK_CLK_MAX, 0, 0}, /* This MUST be the last entry */
1066 };
1067
1068 static void __init tegra20_clock_apply_init_table(void)
1069 {
1070 tegra_init_from_table(init_table, clks, TEGRA20_CLK_CLK_MAX);
1071 }
1072
1073 /*
1074 * Some clocks may be used by different drivers depending on the board
1075 * configuration. List those here to register them twice in the clock lookup
1076 * table under two names.
1077 */
1078 static struct tegra_clk_duplicate tegra_clk_duplicates[] = {
1079 TEGRA_CLK_DUPLICATE(TEGRA20_CLK_USBD, "utmip-pad", NULL),
1080 TEGRA_CLK_DUPLICATE(TEGRA20_CLK_USBD, "tegra-ehci.0", NULL),
1081 TEGRA_CLK_DUPLICATE(TEGRA20_CLK_USBD, "tegra-otg", NULL),
1082 TEGRA_CLK_DUPLICATE(TEGRA20_CLK_CCLK, NULL, "cpu"),
1083 TEGRA_CLK_DUPLICATE(TEGRA20_CLK_CLK_MAX, NULL, NULL), /* Must be the last entry */
1084 };
1085
1086 static const struct of_device_id pmc_match[] __initconst = {
1087 { .compatible = "nvidia,tegra20-pmc" },
1088 {},
1089 };
1090
1091 static void __init tegra20_clock_init(struct device_node *np)
1092 {
1093 struct device_node *node;
1094
1095 clk_base = of_iomap(np, 0);
1096 if (!clk_base) {
1097 pr_err("Can't map CAR registers\n");
1098 BUG();
1099 }
1100
1101 node = of_find_matching_node(NULL, pmc_match);
1102 if (!node) {
1103 pr_err("Failed to find pmc node\n");
1104 BUG();
1105 }
1106
1107 pmc_base = of_iomap(node, 0);
1108 if (!pmc_base) {
1109 pr_err("Can't map pmc registers\n");
1110 BUG();
1111 }
1112
1113 clks = tegra_clk_init(clk_base, TEGRA20_CLK_CLK_MAX,
1114 TEGRA20_CLK_PERIPH_BANKS);
1115 if (!clks)
1116 return;
1117
1118 tegra20_osc_clk_init();
1119 tegra_fixed_clk_init(tegra20_clks);
1120 tegra20_pll_init();
1121 tegra20_super_clk_init();
1122 tegra_super_clk_gen4_init(clk_base, pmc_base, tegra20_clks, NULL);
1123 tegra20_periph_clk_init();
1124 tegra20_audio_clk_init();
1125 tegra_pmc_clk_init(pmc_base, tegra20_clks);
1126
1127 tegra_init_dup_clks(tegra_clk_duplicates, clks, TEGRA20_CLK_CLK_MAX);
1128
1129 tegra_add_of_provider(np);
1130 tegra_register_devclks(devclks, ARRAY_SIZE(devclks));
1131
1132 tegra_clk_apply_init_table = tegra20_clock_apply_init_table;
1133
1134 tegra_cpu_car_ops = &tegra20_cpu_car_ops;
1135 }
1136 CLK_OF_DECLARE(tegra20, "nvidia,tegra20-car", tegra20_clock_init);
Linux kernel - Deliverables
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