1 /* linux/arch/arm/mach-s5pv310/clock.c
3 * Copyright (c) 2010 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com/
6 * S5PV310 - Clock support
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
13 #include <linux/kernel.h>
14 #include <linux/err.h>
17 #include <plat/cpu-freq.h>
18 #include <plat/clock.h>
21 #include <plat/s5p-clock.h>
22 #include <plat/clock-clksrc.h>
25 #include <mach/regs-clock.h>
27 static struct clk clk_sclk_hdmi27m = {
28 .name = "sclk_hdmi27m",
33 /* Core list of CMU_CPU side */
35 static struct clksrc_clk clk_mout_apll = {
40 .sources = &clk_src_apll,
41 .reg_src = { .reg = S5P_CLKSRC_CPU, .shift = 0, .size = 1 },
42 .reg_div = { .reg = S5P_CLKDIV_CPU, .shift = 24, .size = 3 },
45 static struct clksrc_clk clk_mout_epll = {
50 .sources = &clk_src_epll,
51 .reg_src = { .reg = S5P_CLKSRC_TOP0, .shift = 4, .size = 1 },
54 static struct clksrc_clk clk_mout_mpll = {
59 .sources = &clk_src_mpll,
60 .reg_src = { .reg = S5P_CLKSRC_CPU, .shift = 8, .size = 1 },
63 static struct clk *clkset_moutcore_list[] = {
64 [0] = &clk_mout_apll.clk,
65 [1] = &clk_mout_mpll.clk,
68 static struct clksrc_sources clkset_moutcore = {
69 .sources = clkset_moutcore_list,
70 .nr_sources = ARRAY_SIZE(clkset_moutcore_list),
73 static struct clksrc_clk clk_moutcore = {
78 .sources = &clkset_moutcore,
79 .reg_src = { .reg = S5P_CLKSRC_CPU, .shift = 16, .size = 1 },
82 static struct clksrc_clk clk_coreclk = {
86 .parent = &clk_moutcore.clk,
88 .reg_div = { .reg = S5P_CLKDIV_CPU, .shift = 0, .size = 3 },
91 static struct clksrc_clk clk_armclk = {
95 .parent = &clk_coreclk.clk,
99 static struct clksrc_clk clk_aclk_corem0 = {
101 .name = "aclk_corem0",
103 .parent = &clk_coreclk.clk,
105 .reg_div = { .reg = S5P_CLKDIV_CPU, .shift = 4, .size = 3 },
108 static struct clksrc_clk clk_aclk_cores = {
110 .name = "aclk_cores",
112 .parent = &clk_coreclk.clk,
114 .reg_div = { .reg = S5P_CLKDIV_CPU, .shift = 4, .size = 3 },
117 static struct clksrc_clk clk_aclk_corem1 = {
119 .name = "aclk_corem1",
121 .parent = &clk_coreclk.clk,
123 .reg_div = { .reg = S5P_CLKDIV_CPU, .shift = 8, .size = 3 },
126 static struct clksrc_clk clk_periphclk = {
130 .parent = &clk_coreclk.clk,
132 .reg_div = { .reg = S5P_CLKDIV_CPU, .shift = 12, .size = 3 },
135 static struct clksrc_clk clk_atclk = {
139 .parent = &clk_moutcore.clk,
141 .reg_div = { .reg = S5P_CLKDIV_CPU, .shift = 16, .size = 3 },
144 static struct clksrc_clk clk_pclk_dbg = {
148 .parent = &clk_atclk.clk,
150 .reg_div = { .reg = S5P_CLKDIV_CPU, .shift = 20, .size = 3 },
153 /* Core list of CMU_CORE side */
155 static struct clk *clkset_corebus_list[] = {
156 [0] = &clk_mout_mpll.clk,
157 [1] = &clk_mout_apll.clk,
160 static struct clksrc_sources clkset_mout_corebus = {
161 .sources = clkset_corebus_list,
162 .nr_sources = ARRAY_SIZE(clkset_corebus_list),
165 static struct clksrc_clk clk_mout_corebus = {
167 .name = "mout_corebus",
170 .sources = &clkset_mout_corebus,
171 .reg_src = { .reg = S5P_CLKSRC_CORE, .shift = 4, .size = 1 },
174 static struct clksrc_clk clk_sclk_dmc = {
178 .parent = &clk_mout_corebus.clk,
180 .reg_div = { .reg = S5P_CLKDIV_CORE0, .shift = 12, .size = 3 },
183 static struct clksrc_clk clk_aclk_cored = {
185 .name = "aclk_cored",
187 .parent = &clk_sclk_dmc.clk,
189 .reg_div = { .reg = S5P_CLKDIV_CORE0, .shift = 16, .size = 3 },
192 static struct clksrc_clk clk_aclk_corep = {
194 .name = "aclk_corep",
196 .parent = &clk_aclk_cored.clk,
198 .reg_div = { .reg = S5P_CLKDIV_CORE0, .shift = 20, .size = 3 },
201 static struct clksrc_clk clk_aclk_acp = {
205 .parent = &clk_mout_corebus.clk,
207 .reg_div = { .reg = S5P_CLKDIV_CORE0, .shift = 0, .size = 3 },
210 static struct clksrc_clk clk_pclk_acp = {
214 .parent = &clk_aclk_acp.clk,
216 .reg_div = { .reg = S5P_CLKDIV_CORE0, .shift = 4, .size = 3 },
219 /* Core list of CMU_TOP side */
221 static struct clk *clkset_aclk_top_list[] = {
222 [0] = &clk_mout_mpll.clk,
223 [1] = &clk_mout_apll.clk,
226 static struct clksrc_sources clkset_aclk_200 = {
227 .sources = clkset_aclk_top_list,
228 .nr_sources = ARRAY_SIZE(clkset_aclk_top_list),
231 static struct clksrc_clk clk_aclk_200 = {
236 .sources = &clkset_aclk_200,
237 .reg_src = { .reg = S5P_CLKSRC_TOP0, .shift = 12, .size = 1 },
238 .reg_div = { .reg = S5P_CLKDIV_TOP, .shift = 0, .size = 3 },
241 static struct clksrc_sources clkset_aclk_100 = {
242 .sources = clkset_aclk_top_list,
243 .nr_sources = ARRAY_SIZE(clkset_aclk_top_list),
246 static struct clksrc_clk clk_aclk_100 = {
251 .sources = &clkset_aclk_100,
252 .reg_src = { .reg = S5P_CLKSRC_TOP0, .shift = 16, .size = 1 },
253 .reg_div = { .reg = S5P_CLKDIV_TOP, .shift = 4, .size = 4 },
256 static struct clksrc_sources clkset_aclk_160 = {
257 .sources = clkset_aclk_top_list,
258 .nr_sources = ARRAY_SIZE(clkset_aclk_top_list),
261 static struct clksrc_clk clk_aclk_160 = {
266 .sources = &clkset_aclk_160,
267 .reg_src = { .reg = S5P_CLKSRC_TOP0, .shift = 20, .size = 1 },
268 .reg_div = { .reg = S5P_CLKDIV_TOP, .shift = 8, .size = 3 },
271 static struct clksrc_sources clkset_aclk_133 = {
272 .sources = clkset_aclk_top_list,
273 .nr_sources = ARRAY_SIZE(clkset_aclk_top_list),
276 static struct clksrc_clk clk_aclk_133 = {
281 .sources = &clkset_aclk_133,
282 .reg_src = { .reg = S5P_CLKSRC_TOP0, .shift = 24, .size = 1 },
283 .reg_div = { .reg = S5P_CLKDIV_TOP, .shift = 12, .size = 3 },
286 static struct clk *clkset_vpllsrc_list[] = {
288 [1] = &clk_sclk_hdmi27m,
291 static struct clksrc_sources clkset_vpllsrc = {
292 .sources = clkset_vpllsrc_list,
293 .nr_sources = ARRAY_SIZE(clkset_vpllsrc_list),
296 static struct clksrc_clk clk_vpllsrc = {
301 .sources = &clkset_vpllsrc,
302 .reg_src = { .reg = S5P_CLKSRC_TOP1, .shift = 0, .size = 1 },
305 static struct clk *clkset_sclk_vpll_list[] = {
306 [0] = &clk_vpllsrc.clk,
307 [1] = &clk_fout_vpll,
310 static struct clksrc_sources clkset_sclk_vpll = {
311 .sources = clkset_sclk_vpll_list,
312 .nr_sources = ARRAY_SIZE(clkset_sclk_vpll_list),
315 static struct clksrc_clk clk_sclk_vpll = {
320 .sources = &clkset_sclk_vpll,
321 .reg_src = { .reg = S5P_CLKSRC_TOP0, .shift = 8, .size = 1 },
324 static int s5pv310_clk_ip_peril_ctrl(struct clk *clk, int enable)
326 return s5p_gatectrl(S5P_CLKGATE_IP_PERIL, clk, enable);
329 static struct clk init_clocks_disable[] = {
333 .parent = &clk_aclk_100.clk,
334 .enable = s5pv310_clk_ip_peril_ctrl,
339 static struct clk init_clocks[] = {
340 /* Nothing here yet */
343 static struct clk *clkset_group_list[] = {
344 [0] = &clk_ext_xtal_mux,
346 [2] = &clk_sclk_hdmi27m,
347 [6] = &clk_mout_mpll.clk,
348 [7] = &clk_mout_epll.clk,
349 [8] = &clk_sclk_vpll.clk,
352 static struct clksrc_sources clkset_group = {
353 .sources = clkset_group_list,
354 .nr_sources = ARRAY_SIZE(clkset_group_list),
357 static struct clksrc_clk clksrcs[] = {
363 .enable = s5pv310_clk_ip_peril_ctrl,
365 .sources = &clkset_group,
366 .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 0, .size = 4 },
367 .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 0, .size = 4 },
372 .enable = s5pv310_clk_ip_peril_ctrl,
375 .sources = &clkset_group,
376 .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 4, .size = 4 },
377 .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 4, .size = 4 },
382 .enable = s5pv310_clk_ip_peril_ctrl,
385 .sources = &clkset_group,
386 .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 8, .size = 4 },
387 .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 8, .size = 4 },
392 .enable = s5pv310_clk_ip_peril_ctrl,
395 .sources = &clkset_group,
396 .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 12, .size = 4 },
397 .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 12, .size = 4 },
402 .enable = s5pv310_clk_ip_peril_ctrl,
403 .ctrlbit = (1 << 24),
405 .sources = &clkset_group,
406 .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 24, .size = 4 },
407 .reg_div = { .reg = S5P_CLKDIV_PERIL3, .shift = 0, .size = 4 },
411 /* Clock initialization code */
412 static struct clksrc_clk *sysclks[] = {
439 void __init_or_cpufreq s5pv310_setup_clocks(void)
441 struct clk *xtal_clk;
446 unsigned long vpllsrc;
448 unsigned long armclk;
449 unsigned long aclk_corem0;
450 unsigned long aclk_cores;
451 unsigned long aclk_corem1;
452 unsigned long periphclk;
453 unsigned long sclk_dmc;
454 unsigned long aclk_cored;
455 unsigned long aclk_corep;
456 unsigned long aclk_acp;
457 unsigned long pclk_acp;
460 printk(KERN_DEBUG "%s: registering clocks\n", __func__);
462 xtal_clk = clk_get(NULL, "xtal");
463 BUG_ON(IS_ERR(xtal_clk));
465 xtal = clk_get_rate(xtal_clk);
468 printk(KERN_DEBUG "%s: xtal is %ld\n", __func__, xtal);
470 apll = s5p_get_pll45xx(xtal, __raw_readl(S5P_APLL_CON0), pll_4508);
471 mpll = s5p_get_pll45xx(xtal, __raw_readl(S5P_MPLL_CON0), pll_4508);
472 epll = s5p_get_pll46xx(xtal, __raw_readl(S5P_EPLL_CON0),
473 __raw_readl(S5P_EPLL_CON1), pll_4500);
475 vpllsrc = clk_get_rate(&clk_vpllsrc.clk);
476 vpll = s5p_get_pll46xx(vpllsrc, __raw_readl(S5P_VPLL_CON0),
477 __raw_readl(S5P_VPLL_CON1), pll_4502);
479 clk_fout_apll.rate = apll;
480 clk_fout_mpll.rate = mpll;
481 clk_fout_epll.rate = epll;
482 clk_fout_vpll.rate = vpll;
484 printk(KERN_INFO "S5PV310: PLL settings, A=%ld, M=%ld, E=%ld V=%ld",
485 apll, mpll, epll, vpll);
487 armclk = clk_get_rate(&clk_armclk.clk);
488 aclk_corem0 = clk_get_rate(&clk_aclk_corem0.clk);
489 aclk_cores = clk_get_rate(&clk_aclk_cores.clk);
490 aclk_corem1 = clk_get_rate(&clk_aclk_corem1.clk);
491 periphclk = clk_get_rate(&clk_periphclk.clk);
492 sclk_dmc = clk_get_rate(&clk_sclk_dmc.clk);
493 aclk_cored = clk_get_rate(&clk_aclk_cored.clk);
494 aclk_corep = clk_get_rate(&clk_aclk_corep.clk);
495 aclk_acp = clk_get_rate(&clk_aclk_acp.clk);
496 pclk_acp = clk_get_rate(&clk_pclk_acp.clk);
498 printk(KERN_INFO "S5PV310: ARMCLK=%ld, COREM0=%ld, CORES=%ld\n"
499 "COREM1=%ld, PERI=%ld, DMC=%ld, CORED=%ld\n"
500 "COREP=%ld, ACLK_ACP=%ld, PCLK_ACP=%ld",
501 armclk, aclk_corem0, aclk_cores, aclk_corem1,
502 periphclk, sclk_dmc, aclk_cored, aclk_corep,
506 clk_h.rate = sclk_dmc;
507 clk_p.rate = periphclk;
509 for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++)
510 s3c_set_clksrc(&clksrcs[ptr], true);
513 static struct clk *clks[] __initdata = {
514 /* Nothing here yet */
517 void __init s5pv310_register_clocks(void)
523 ret = s3c24xx_register_clocks(clks, ARRAY_SIZE(clks));
525 printk(KERN_ERR "Failed to register %u clocks\n", ret);
527 for (ptr = 0; ptr < ARRAY_SIZE(sysclks); ptr++)
528 s3c_register_clksrc(sysclks[ptr], 1);
530 s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
531 s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks));
533 clkp = init_clocks_disable;
534 for (ptr = 0; ptr < ARRAY_SIZE(init_clocks_disable); ptr++, clkp++) {
535 ret = s3c24xx_register_clock(clkp);
537 printk(KERN_ERR "Failed to register clock %s (%d)\n",
540 (clkp->enable)(clkp, 0);