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52650505 PW |
1 | /* |
2 | * linux/arch/arm/mach-omap1/clock_data.c | |
3 | * | |
51c19541 | 4 | * Copyright (C) 2004 - 2005, 2009-2010 Nokia Corporation |
52650505 PW |
5 | * Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com> |
6 | * Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc | |
7 | * | |
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. | |
fb2fc920 PW |
11 | * |
12 | * To do: | |
13 | * - Clocks that are only available on some chips should be marked with the | |
14 | * chips that they are present on. | |
52650505 PW |
15 | */ |
16 | ||
17 | #include <linux/kernel.h> | |
2c799cef | 18 | #include <linux/io.h> |
52650505 | 19 | #include <linux/clk.h> |
6560ee07 JK |
20 | #include <linux/cpufreq.h> |
21 | #include <linux/delay.h> | |
52650505 PW |
22 | |
23 | #include <asm/mach-types.h> /* for machine_is_* */ | |
24 | ||
25 | #include <plat/clock.h> | |
26 | #include <plat/cpu.h> | |
27 | #include <plat/clkdev_omap.h> | |
b924b204 | 28 | #include <plat/board.h> |
f9e5908f | 29 | #include <plat/sram.h> /* for omap_sram_reprogram_clock() */ |
52650505 | 30 | |
2c799cef | 31 | #include <mach/hardware.h> |
b924b204 | 32 | #include <mach/usb.h> /* for OTG_BASE */ |
2c799cef | 33 | |
2e3ee9f4 | 34 | #include "iomap.h" |
52650505 PW |
35 | #include "clock.h" |
36 | ||
fb2fc920 PW |
37 | /* Some ARM_IDLECT1 bit shifts - used in struct arm_idlect1_clk */ |
38 | #define IDL_CLKOUT_ARM_SHIFT 12 | |
39 | #define IDLTIM_ARM_SHIFT 9 | |
40 | #define IDLAPI_ARM_SHIFT 8 | |
41 | #define IDLIF_ARM_SHIFT 6 | |
42 | #define IDLLB_ARM_SHIFT 4 /* undocumented? */ | |
43 | #define OMAP1510_IDLLCD_ARM_SHIFT 3 /* undocumented? */ | |
44 | #define IDLPER_ARM_SHIFT 2 | |
45 | #define IDLXORP_ARM_SHIFT 1 | |
46 | #define IDLWDT_ARM_SHIFT 0 | |
47 | ||
48 | /* Some MOD_CONF_CTRL_0 bit shifts - used in struct clk.enable_bit */ | |
49 | #define CONF_MOD_UART3_CLK_MODE_R 31 | |
50 | #define CONF_MOD_UART2_CLK_MODE_R 30 | |
51 | #define CONF_MOD_UART1_CLK_MODE_R 29 | |
52 | #define CONF_MOD_MMC_SD_CLK_REQ_R 23 | |
53 | #define CONF_MOD_MCBSP3_AUXON 20 | |
54 | ||
55 | /* Some MOD_CONF_CTRL_1 bit shifts - used in struct clk.enable_bit */ | |
56 | #define CONF_MOD_SOSSI_CLK_EN_R 16 | |
57 | ||
58 | /* Some OTG_SYSCON_2-specific bit fields */ | |
59 | #define OTG_SYSCON_2_UHOST_EN_SHIFT 8 | |
60 | ||
61 | /* Some SOFT_REQ_REG bit fields - used in struct clk.enable_bit */ | |
62 | #define SOFT_MMC2_DPLL_REQ_SHIFT 13 | |
63 | #define SOFT_MMC_DPLL_REQ_SHIFT 12 | |
64 | #define SOFT_UART3_DPLL_REQ_SHIFT 11 | |
65 | #define SOFT_UART2_DPLL_REQ_SHIFT 10 | |
66 | #define SOFT_UART1_DPLL_REQ_SHIFT 9 | |
67 | #define SOFT_USB_OTG_DPLL_REQ_SHIFT 8 | |
68 | #define SOFT_CAM_DPLL_REQ_SHIFT 7 | |
69 | #define SOFT_COM_MCKO_REQ_SHIFT 6 | |
70 | #define SOFT_PERIPH_REQ_SHIFT 5 /* sys_ck gate for UART2 ? */ | |
71 | #define USB_REQ_EN_SHIFT 4 | |
72 | #define SOFT_USB_REQ_SHIFT 3 /* sys_ck gate for USB host? */ | |
73 | #define SOFT_SDW_REQ_SHIFT 2 /* sys_ck gate for Bluetooth? */ | |
74 | #define SOFT_COM_REQ_SHIFT 1 /* sys_ck gate for com proc? */ | |
75 | #define SOFT_DPLL_REQ_SHIFT 0 | |
76 | ||
77 | /* | |
52650505 | 78 | * Omap1 clocks |
fb2fc920 | 79 | */ |
52650505 | 80 | |
52650505 PW |
81 | static struct clk ck_ref = { |
82 | .name = "ck_ref", | |
83 | .ops = &clkops_null, | |
84 | .rate = 12000000, | |
85 | }; | |
86 | ||
87 | static struct clk ck_dpll1 = { | |
88 | .name = "ck_dpll1", | |
89 | .ops = &clkops_null, | |
90 | .parent = &ck_ref, | |
91 | }; | |
92 | ||
93 | /* | |
94 | * FIXME: This clock seems to be necessary but no-one has asked for its | |
95 | * activation. [ FIX: SoSSI, SSR ] | |
96 | */ | |
97 | static struct arm_idlect1_clk ck_dpll1out = { | |
98 | .clk = { | |
99 | .name = "ck_dpll1out", | |
100 | .ops = &clkops_generic, | |
101 | .parent = &ck_dpll1, | |
102 | .flags = CLOCK_IDLE_CONTROL | ENABLE_REG_32BIT | | |
103 | ENABLE_ON_INIT, | |
104 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
105 | .enable_bit = EN_CKOUT_ARM, | |
106 | .recalc = &followparent_recalc, | |
107 | }, | |
fb2fc920 | 108 | .idlect_shift = IDL_CLKOUT_ARM_SHIFT, |
52650505 PW |
109 | }; |
110 | ||
111 | static struct clk sossi_ck = { | |
112 | .name = "ck_sossi", | |
113 | .ops = &clkops_generic, | |
114 | .parent = &ck_dpll1out.clk, | |
115 | .flags = CLOCK_NO_IDLE_PARENT | ENABLE_REG_32BIT, | |
116 | .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_1), | |
fb2fc920 | 117 | .enable_bit = CONF_MOD_SOSSI_CLK_EN_R, |
52650505 PW |
118 | .recalc = &omap1_sossi_recalc, |
119 | .set_rate = &omap1_set_sossi_rate, | |
120 | }; | |
121 | ||
122 | static struct clk arm_ck = { | |
123 | .name = "arm_ck", | |
124 | .ops = &clkops_null, | |
125 | .parent = &ck_dpll1, | |
126 | .rate_offset = CKCTL_ARMDIV_OFFSET, | |
127 | .recalc = &omap1_ckctl_recalc, | |
128 | .round_rate = omap1_clk_round_rate_ckctl_arm, | |
129 | .set_rate = omap1_clk_set_rate_ckctl_arm, | |
130 | }; | |
131 | ||
132 | static struct arm_idlect1_clk armper_ck = { | |
133 | .clk = { | |
134 | .name = "armper_ck", | |
135 | .ops = &clkops_generic, | |
136 | .parent = &ck_dpll1, | |
137 | .flags = CLOCK_IDLE_CONTROL, | |
138 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
139 | .enable_bit = EN_PERCK, | |
140 | .rate_offset = CKCTL_PERDIV_OFFSET, | |
141 | .recalc = &omap1_ckctl_recalc, | |
142 | .round_rate = omap1_clk_round_rate_ckctl_arm, | |
143 | .set_rate = omap1_clk_set_rate_ckctl_arm, | |
144 | }, | |
fb2fc920 | 145 | .idlect_shift = IDLPER_ARM_SHIFT, |
52650505 PW |
146 | }; |
147 | ||
148 | /* | |
149 | * FIXME: This clock seems to be necessary but no-one has asked for its | |
150 | * activation. [ GPIO code for 1510 ] | |
151 | */ | |
152 | static struct clk arm_gpio_ck = { | |
77640aab | 153 | .name = "ick", |
52650505 PW |
154 | .ops = &clkops_generic, |
155 | .parent = &ck_dpll1, | |
156 | .flags = ENABLE_ON_INIT, | |
157 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
158 | .enable_bit = EN_GPIOCK, | |
159 | .recalc = &followparent_recalc, | |
160 | }; | |
161 | ||
162 | static struct arm_idlect1_clk armxor_ck = { | |
163 | .clk = { | |
164 | .name = "armxor_ck", | |
165 | .ops = &clkops_generic, | |
166 | .parent = &ck_ref, | |
167 | .flags = CLOCK_IDLE_CONTROL, | |
168 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
169 | .enable_bit = EN_XORPCK, | |
170 | .recalc = &followparent_recalc, | |
171 | }, | |
fb2fc920 | 172 | .idlect_shift = IDLXORP_ARM_SHIFT, |
52650505 PW |
173 | }; |
174 | ||
175 | static struct arm_idlect1_clk armtim_ck = { | |
176 | .clk = { | |
177 | .name = "armtim_ck", | |
178 | .ops = &clkops_generic, | |
179 | .parent = &ck_ref, | |
180 | .flags = CLOCK_IDLE_CONTROL, | |
181 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
182 | .enable_bit = EN_TIMCK, | |
183 | .recalc = &followparent_recalc, | |
184 | }, | |
fb2fc920 | 185 | .idlect_shift = IDLTIM_ARM_SHIFT, |
52650505 PW |
186 | }; |
187 | ||
188 | static struct arm_idlect1_clk armwdt_ck = { | |
189 | .clk = { | |
190 | .name = "armwdt_ck", | |
191 | .ops = &clkops_generic, | |
192 | .parent = &ck_ref, | |
193 | .flags = CLOCK_IDLE_CONTROL, | |
194 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
195 | .enable_bit = EN_WDTCK, | |
0dfc242f PW |
196 | .fixed_div = 14, |
197 | .recalc = &omap_fixed_divisor_recalc, | |
52650505 | 198 | }, |
fb2fc920 | 199 | .idlect_shift = IDLWDT_ARM_SHIFT, |
52650505 PW |
200 | }; |
201 | ||
202 | static struct clk arminth_ck16xx = { | |
203 | .name = "arminth_ck", | |
204 | .ops = &clkops_null, | |
205 | .parent = &arm_ck, | |
206 | .recalc = &followparent_recalc, | |
207 | /* Note: On 16xx the frequency can be divided by 2 by programming | |
208 | * ARM_CKCTL:ARM_INTHCK_SEL(14) to 1 | |
209 | * | |
210 | * 1510 version is in TC clocks. | |
211 | */ | |
212 | }; | |
213 | ||
214 | static struct clk dsp_ck = { | |
215 | .name = "dsp_ck", | |
216 | .ops = &clkops_generic, | |
217 | .parent = &ck_dpll1, | |
218 | .enable_reg = OMAP1_IO_ADDRESS(ARM_CKCTL), | |
219 | .enable_bit = EN_DSPCK, | |
220 | .rate_offset = CKCTL_DSPDIV_OFFSET, | |
221 | .recalc = &omap1_ckctl_recalc, | |
222 | .round_rate = omap1_clk_round_rate_ckctl_arm, | |
223 | .set_rate = omap1_clk_set_rate_ckctl_arm, | |
224 | }; | |
225 | ||
226 | static struct clk dspmmu_ck = { | |
227 | .name = "dspmmu_ck", | |
228 | .ops = &clkops_null, | |
229 | .parent = &ck_dpll1, | |
230 | .rate_offset = CKCTL_DSPMMUDIV_OFFSET, | |
231 | .recalc = &omap1_ckctl_recalc, | |
232 | .round_rate = omap1_clk_round_rate_ckctl_arm, | |
233 | .set_rate = omap1_clk_set_rate_ckctl_arm, | |
234 | }; | |
235 | ||
236 | static struct clk dspper_ck = { | |
237 | .name = "dspper_ck", | |
238 | .ops = &clkops_dspck, | |
239 | .parent = &ck_dpll1, | |
240 | .enable_reg = DSP_IDLECT2, | |
241 | .enable_bit = EN_PERCK, | |
242 | .rate_offset = CKCTL_PERDIV_OFFSET, | |
243 | .recalc = &omap1_ckctl_recalc_dsp_domain, | |
244 | .round_rate = omap1_clk_round_rate_ckctl_arm, | |
245 | .set_rate = &omap1_clk_set_rate_dsp_domain, | |
246 | }; | |
247 | ||
248 | static struct clk dspxor_ck = { | |
249 | .name = "dspxor_ck", | |
250 | .ops = &clkops_dspck, | |
251 | .parent = &ck_ref, | |
252 | .enable_reg = DSP_IDLECT2, | |
253 | .enable_bit = EN_XORPCK, | |
254 | .recalc = &followparent_recalc, | |
255 | }; | |
256 | ||
257 | static struct clk dsptim_ck = { | |
258 | .name = "dsptim_ck", | |
259 | .ops = &clkops_dspck, | |
260 | .parent = &ck_ref, | |
261 | .enable_reg = DSP_IDLECT2, | |
262 | .enable_bit = EN_DSPTIMCK, | |
263 | .recalc = &followparent_recalc, | |
264 | }; | |
265 | ||
52650505 PW |
266 | static struct arm_idlect1_clk tc_ck = { |
267 | .clk = { | |
268 | .name = "tc_ck", | |
269 | .ops = &clkops_null, | |
270 | .parent = &ck_dpll1, | |
271 | .flags = CLOCK_IDLE_CONTROL, | |
272 | .rate_offset = CKCTL_TCDIV_OFFSET, | |
273 | .recalc = &omap1_ckctl_recalc, | |
274 | .round_rate = omap1_clk_round_rate_ckctl_arm, | |
275 | .set_rate = omap1_clk_set_rate_ckctl_arm, | |
276 | }, | |
fb2fc920 | 277 | .idlect_shift = IDLIF_ARM_SHIFT, |
52650505 PW |
278 | }; |
279 | ||
280 | static struct clk arminth_ck1510 = { | |
281 | .name = "arminth_ck", | |
282 | .ops = &clkops_null, | |
283 | .parent = &tc_ck.clk, | |
284 | .recalc = &followparent_recalc, | |
285 | /* Note: On 1510 the frequency follows TC_CK | |
286 | * | |
287 | * 16xx version is in MPU clocks. | |
288 | */ | |
289 | }; | |
290 | ||
291 | static struct clk tipb_ck = { | |
292 | /* No-idle controlled by "tc_ck" */ | |
293 | .name = "tipb_ck", | |
294 | .ops = &clkops_null, | |
295 | .parent = &tc_ck.clk, | |
296 | .recalc = &followparent_recalc, | |
297 | }; | |
298 | ||
299 | static struct clk l3_ocpi_ck = { | |
300 | /* No-idle controlled by "tc_ck" */ | |
301 | .name = "l3_ocpi_ck", | |
302 | .ops = &clkops_generic, | |
303 | .parent = &tc_ck.clk, | |
304 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT3), | |
305 | .enable_bit = EN_OCPI_CK, | |
306 | .recalc = &followparent_recalc, | |
307 | }; | |
308 | ||
309 | static struct clk tc1_ck = { | |
310 | .name = "tc1_ck", | |
311 | .ops = &clkops_generic, | |
312 | .parent = &tc_ck.clk, | |
313 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT3), | |
314 | .enable_bit = EN_TC1_CK, | |
315 | .recalc = &followparent_recalc, | |
316 | }; | |
317 | ||
318 | /* | |
319 | * FIXME: This clock seems to be necessary but no-one has asked for its | |
320 | * activation. [ pm.c (SRAM), CCP, Camera ] | |
321 | */ | |
322 | static struct clk tc2_ck = { | |
323 | .name = "tc2_ck", | |
324 | .ops = &clkops_generic, | |
325 | .parent = &tc_ck.clk, | |
326 | .flags = ENABLE_ON_INIT, | |
327 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT3), | |
328 | .enable_bit = EN_TC2_CK, | |
329 | .recalc = &followparent_recalc, | |
330 | }; | |
331 | ||
332 | static struct clk dma_ck = { | |
333 | /* No-idle controlled by "tc_ck" */ | |
334 | .name = "dma_ck", | |
335 | .ops = &clkops_null, | |
336 | .parent = &tc_ck.clk, | |
337 | .recalc = &followparent_recalc, | |
338 | }; | |
339 | ||
340 | static struct clk dma_lcdfree_ck = { | |
341 | .name = "dma_lcdfree_ck", | |
342 | .ops = &clkops_null, | |
343 | .parent = &tc_ck.clk, | |
344 | .recalc = &followparent_recalc, | |
345 | }; | |
346 | ||
347 | static struct arm_idlect1_clk api_ck = { | |
348 | .clk = { | |
349 | .name = "api_ck", | |
350 | .ops = &clkops_generic, | |
351 | .parent = &tc_ck.clk, | |
352 | .flags = CLOCK_IDLE_CONTROL, | |
353 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
354 | .enable_bit = EN_APICK, | |
355 | .recalc = &followparent_recalc, | |
356 | }, | |
fb2fc920 | 357 | .idlect_shift = IDLAPI_ARM_SHIFT, |
52650505 PW |
358 | }; |
359 | ||
360 | static struct arm_idlect1_clk lb_ck = { | |
361 | .clk = { | |
362 | .name = "lb_ck", | |
363 | .ops = &clkops_generic, | |
364 | .parent = &tc_ck.clk, | |
365 | .flags = CLOCK_IDLE_CONTROL, | |
366 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
367 | .enable_bit = EN_LBCK, | |
368 | .recalc = &followparent_recalc, | |
369 | }, | |
fb2fc920 | 370 | .idlect_shift = IDLLB_ARM_SHIFT, |
52650505 PW |
371 | }; |
372 | ||
373 | static struct clk rhea1_ck = { | |
374 | .name = "rhea1_ck", | |
375 | .ops = &clkops_null, | |
376 | .parent = &tc_ck.clk, | |
377 | .recalc = &followparent_recalc, | |
378 | }; | |
379 | ||
380 | static struct clk rhea2_ck = { | |
381 | .name = "rhea2_ck", | |
382 | .ops = &clkops_null, | |
383 | .parent = &tc_ck.clk, | |
384 | .recalc = &followparent_recalc, | |
385 | }; | |
386 | ||
387 | static struct clk lcd_ck_16xx = { | |
388 | .name = "lcd_ck", | |
389 | .ops = &clkops_generic, | |
390 | .parent = &ck_dpll1, | |
391 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
392 | .enable_bit = EN_LCDCK, | |
393 | .rate_offset = CKCTL_LCDDIV_OFFSET, | |
394 | .recalc = &omap1_ckctl_recalc, | |
395 | .round_rate = omap1_clk_round_rate_ckctl_arm, | |
396 | .set_rate = omap1_clk_set_rate_ckctl_arm, | |
397 | }; | |
398 | ||
399 | static struct arm_idlect1_clk lcd_ck_1510 = { | |
400 | .clk = { | |
401 | .name = "lcd_ck", | |
402 | .ops = &clkops_generic, | |
403 | .parent = &ck_dpll1, | |
404 | .flags = CLOCK_IDLE_CONTROL, | |
405 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
406 | .enable_bit = EN_LCDCK, | |
407 | .rate_offset = CKCTL_LCDDIV_OFFSET, | |
408 | .recalc = &omap1_ckctl_recalc, | |
409 | .round_rate = omap1_clk_round_rate_ckctl_arm, | |
410 | .set_rate = omap1_clk_set_rate_ckctl_arm, | |
411 | }, | |
fb2fc920 | 412 | .idlect_shift = OMAP1510_IDLLCD_ARM_SHIFT, |
52650505 PW |
413 | }; |
414 | ||
fb2fc920 PW |
415 | /* |
416 | * XXX The enable_bit here is misused - it simply switches between 12MHz | |
417 | * and 48MHz. Reimplement with clksel. | |
418 | * | |
419 | * XXX does this need SYSC register handling? | |
420 | */ | |
52650505 PW |
421 | static struct clk uart1_1510 = { |
422 | .name = "uart1_ck", | |
423 | .ops = &clkops_null, | |
424 | /* Direct from ULPD, no real parent */ | |
425 | .parent = &armper_ck.clk, | |
426 | .rate = 12000000, | |
427 | .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, | |
428 | .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), | |
fb2fc920 | 429 | .enable_bit = CONF_MOD_UART1_CLK_MODE_R, |
52650505 PW |
430 | .set_rate = &omap1_set_uart_rate, |
431 | .recalc = &omap1_uart_recalc, | |
432 | }; | |
433 | ||
fb2fc920 PW |
434 | /* |
435 | * XXX The enable_bit here is misused - it simply switches between 12MHz | |
436 | * and 48MHz. Reimplement with clksel. | |
437 | * | |
438 | * XXX SYSC register handling does not belong in the clock framework | |
439 | */ | |
52650505 PW |
440 | static struct uart_clk uart1_16xx = { |
441 | .clk = { | |
442 | .name = "uart1_ck", | |
fb2fc920 | 443 | .ops = &clkops_uart_16xx, |
52650505 PW |
444 | /* Direct from ULPD, no real parent */ |
445 | .parent = &armper_ck.clk, | |
446 | .rate = 48000000, | |
51c19541 | 447 | .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, |
52650505 | 448 | .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), |
fb2fc920 | 449 | .enable_bit = CONF_MOD_UART1_CLK_MODE_R, |
52650505 PW |
450 | }, |
451 | .sysc_addr = 0xfffb0054, | |
452 | }; | |
453 | ||
fb2fc920 PW |
454 | /* |
455 | * XXX The enable_bit here is misused - it simply switches between 12MHz | |
456 | * and 48MHz. Reimplement with clksel. | |
457 | * | |
458 | * XXX does this need SYSC register handling? | |
459 | */ | |
52650505 PW |
460 | static struct clk uart2_ck = { |
461 | .name = "uart2_ck", | |
462 | .ops = &clkops_null, | |
463 | /* Direct from ULPD, no real parent */ | |
464 | .parent = &armper_ck.clk, | |
465 | .rate = 12000000, | |
466 | .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, | |
467 | .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), | |
fb2fc920 | 468 | .enable_bit = CONF_MOD_UART2_CLK_MODE_R, |
52650505 PW |
469 | .set_rate = &omap1_set_uart_rate, |
470 | .recalc = &omap1_uart_recalc, | |
471 | }; | |
472 | ||
fb2fc920 PW |
473 | /* |
474 | * XXX The enable_bit here is misused - it simply switches between 12MHz | |
475 | * and 48MHz. Reimplement with clksel. | |
476 | * | |
477 | * XXX does this need SYSC register handling? | |
478 | */ | |
52650505 PW |
479 | static struct clk uart3_1510 = { |
480 | .name = "uart3_ck", | |
481 | .ops = &clkops_null, | |
482 | /* Direct from ULPD, no real parent */ | |
483 | .parent = &armper_ck.clk, | |
484 | .rate = 12000000, | |
485 | .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, | |
486 | .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), | |
fb2fc920 | 487 | .enable_bit = CONF_MOD_UART3_CLK_MODE_R, |
52650505 PW |
488 | .set_rate = &omap1_set_uart_rate, |
489 | .recalc = &omap1_uart_recalc, | |
490 | }; | |
491 | ||
fb2fc920 PW |
492 | /* |
493 | * XXX The enable_bit here is misused - it simply switches between 12MHz | |
494 | * and 48MHz. Reimplement with clksel. | |
495 | * | |
496 | * XXX SYSC register handling does not belong in the clock framework | |
497 | */ | |
52650505 PW |
498 | static struct uart_clk uart3_16xx = { |
499 | .clk = { | |
500 | .name = "uart3_ck", | |
fb2fc920 | 501 | .ops = &clkops_uart_16xx, |
52650505 PW |
502 | /* Direct from ULPD, no real parent */ |
503 | .parent = &armper_ck.clk, | |
504 | .rate = 48000000, | |
51c19541 | 505 | .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, |
52650505 | 506 | .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), |
fb2fc920 | 507 | .enable_bit = CONF_MOD_UART3_CLK_MODE_R, |
52650505 PW |
508 | }, |
509 | .sysc_addr = 0xfffb9854, | |
510 | }; | |
511 | ||
512 | static struct clk usb_clko = { /* 6 MHz output on W4_USB_CLKO */ | |
513 | .name = "usb_clko", | |
514 | .ops = &clkops_generic, | |
515 | /* Direct from ULPD, no parent */ | |
516 | .rate = 6000000, | |
51c19541 | 517 | .flags = ENABLE_REG_32BIT, |
52650505 PW |
518 | .enable_reg = OMAP1_IO_ADDRESS(ULPD_CLOCK_CTRL), |
519 | .enable_bit = USB_MCLK_EN_BIT, | |
520 | }; | |
521 | ||
522 | static struct clk usb_hhc_ck1510 = { | |
523 | .name = "usb_hhc_ck", | |
524 | .ops = &clkops_generic, | |
525 | /* Direct from ULPD, no parent */ | |
526 | .rate = 48000000, /* Actually 2 clocks, 12MHz and 48MHz */ | |
51c19541 | 527 | .flags = ENABLE_REG_32BIT, |
52650505 PW |
528 | .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), |
529 | .enable_bit = USB_HOST_HHC_UHOST_EN, | |
530 | }; | |
531 | ||
532 | static struct clk usb_hhc_ck16xx = { | |
533 | .name = "usb_hhc_ck", | |
534 | .ops = &clkops_generic, | |
535 | /* Direct from ULPD, no parent */ | |
536 | .rate = 48000000, | |
537 | /* OTG_SYSCON_2.OTG_PADEN == 0 (not 1510-compatible) */ | |
51c19541 | 538 | .flags = ENABLE_REG_32BIT, |
52650505 | 539 | .enable_reg = OMAP1_IO_ADDRESS(OTG_BASE + 0x08), /* OTG_SYSCON_2 */ |
fb2fc920 | 540 | .enable_bit = OTG_SYSCON_2_UHOST_EN_SHIFT |
52650505 PW |
541 | }; |
542 | ||
543 | static struct clk usb_dc_ck = { | |
544 | .name = "usb_dc_ck", | |
545 | .ops = &clkops_generic, | |
546 | /* Direct from ULPD, no parent */ | |
547 | .rate = 48000000, | |
52650505 | 548 | .enable_reg = OMAP1_IO_ADDRESS(SOFT_REQ_REG), |
fb2fc920 | 549 | .enable_bit = USB_REQ_EN_SHIFT, |
52650505 PW |
550 | }; |
551 | ||
552 | static struct clk usb_dc_ck7xx = { | |
553 | .name = "usb_dc_ck", | |
554 | .ops = &clkops_generic, | |
555 | /* Direct from ULPD, no parent */ | |
556 | .rate = 48000000, | |
52650505 | 557 | .enable_reg = OMAP1_IO_ADDRESS(SOFT_REQ_REG), |
fb2fc920 | 558 | .enable_bit = SOFT_USB_OTG_DPLL_REQ_SHIFT, |
52650505 PW |
559 | }; |
560 | ||
8b8fbd39 CM |
561 | static struct clk uart1_7xx = { |
562 | .name = "uart1_ck", | |
563 | .ops = &clkops_generic, | |
564 | /* Direct from ULPD, no parent */ | |
565 | .rate = 12000000, | |
566 | .enable_reg = OMAP1_IO_ADDRESS(SOFT_REQ_REG), | |
567 | .enable_bit = 9, | |
568 | }; | |
569 | ||
570 | static struct clk uart2_7xx = { | |
571 | .name = "uart2_ck", | |
572 | .ops = &clkops_generic, | |
573 | /* Direct from ULPD, no parent */ | |
574 | .rate = 12000000, | |
575 | .enable_reg = OMAP1_IO_ADDRESS(SOFT_REQ_REG), | |
576 | .enable_bit = 11, | |
577 | }; | |
578 | ||
52650505 PW |
579 | static struct clk mclk_1510 = { |
580 | .name = "mclk", | |
581 | .ops = &clkops_generic, | |
582 | /* Direct from ULPD, no parent. May be enabled by ext hardware. */ | |
583 | .rate = 12000000, | |
52650505 | 584 | .enable_reg = OMAP1_IO_ADDRESS(SOFT_REQ_REG), |
fb2fc920 | 585 | .enable_bit = SOFT_COM_MCKO_REQ_SHIFT, |
52650505 PW |
586 | }; |
587 | ||
588 | static struct clk mclk_16xx = { | |
589 | .name = "mclk", | |
590 | .ops = &clkops_generic, | |
591 | /* Direct from ULPD, no parent. May be enabled by ext hardware. */ | |
592 | .enable_reg = OMAP1_IO_ADDRESS(COM_CLK_DIV_CTRL_SEL), | |
593 | .enable_bit = COM_ULPD_PLL_CLK_REQ, | |
594 | .set_rate = &omap1_set_ext_clk_rate, | |
595 | .round_rate = &omap1_round_ext_clk_rate, | |
596 | .init = &omap1_init_ext_clk, | |
597 | }; | |
598 | ||
599 | static struct clk bclk_1510 = { | |
600 | .name = "bclk", | |
601 | .ops = &clkops_generic, | |
602 | /* Direct from ULPD, no parent. May be enabled by ext hardware. */ | |
603 | .rate = 12000000, | |
52650505 PW |
604 | }; |
605 | ||
606 | static struct clk bclk_16xx = { | |
607 | .name = "bclk", | |
608 | .ops = &clkops_generic, | |
609 | /* Direct from ULPD, no parent. May be enabled by ext hardware. */ | |
610 | .enable_reg = OMAP1_IO_ADDRESS(SWD_CLK_DIV_CTRL_SEL), | |
611 | .enable_bit = SWD_ULPD_PLL_CLK_REQ, | |
612 | .set_rate = &omap1_set_ext_clk_rate, | |
613 | .round_rate = &omap1_round_ext_clk_rate, | |
614 | .init = &omap1_init_ext_clk, | |
615 | }; | |
616 | ||
617 | static struct clk mmc1_ck = { | |
b92c170d | 618 | .name = "mmc1_ck", |
52650505 PW |
619 | .ops = &clkops_generic, |
620 | /* Functional clock is direct from ULPD, interface clock is ARMPER */ | |
621 | .parent = &armper_ck.clk, | |
622 | .rate = 48000000, | |
51c19541 | 623 | .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, |
52650505 | 624 | .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), |
fb2fc920 | 625 | .enable_bit = CONF_MOD_MMC_SD_CLK_REQ_R, |
52650505 PW |
626 | }; |
627 | ||
fb2fc920 PW |
628 | /* |
629 | * XXX MOD_CONF_CTRL_0 bit 20 is defined in the 1510 TRM as | |
630 | * CONF_MOD_MCBSP3_AUXON ?? | |
631 | */ | |
52650505 | 632 | static struct clk mmc2_ck = { |
b92c170d | 633 | .name = "mmc2_ck", |
52650505 PW |
634 | .ops = &clkops_generic, |
635 | /* Functional clock is direct from ULPD, interface clock is ARMPER */ | |
636 | .parent = &armper_ck.clk, | |
637 | .rate = 48000000, | |
51c19541 | 638 | .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, |
52650505 PW |
639 | .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), |
640 | .enable_bit = 20, | |
641 | }; | |
642 | ||
643 | static struct clk mmc3_ck = { | |
b92c170d | 644 | .name = "mmc3_ck", |
52650505 PW |
645 | .ops = &clkops_generic, |
646 | /* Functional clock is direct from ULPD, interface clock is ARMPER */ | |
647 | .parent = &armper_ck.clk, | |
648 | .rate = 48000000, | |
51c19541 | 649 | .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, |
52650505 | 650 | .enable_reg = OMAP1_IO_ADDRESS(SOFT_REQ_REG), |
fb2fc920 | 651 | .enable_bit = SOFT_MMC_DPLL_REQ_SHIFT, |
52650505 PW |
652 | }; |
653 | ||
654 | static struct clk virtual_ck_mpu = { | |
655 | .name = "mpu", | |
656 | .ops = &clkops_null, | |
657 | .parent = &arm_ck, /* Is smarter alias for */ | |
658 | .recalc = &followparent_recalc, | |
659 | .set_rate = &omap1_select_table_rate, | |
660 | .round_rate = &omap1_round_to_table_rate, | |
661 | }; | |
662 | ||
663 | /* virtual functional clock domain for I2C. Just for making sure that ARMXOR_CK | |
664 | remains active during MPU idle whenever this is enabled */ | |
665 | static struct clk i2c_fck = { | |
666 | .name = "i2c_fck", | |
52650505 PW |
667 | .ops = &clkops_null, |
668 | .flags = CLOCK_NO_IDLE_PARENT, | |
669 | .parent = &armxor_ck.clk, | |
670 | .recalc = &followparent_recalc, | |
671 | }; | |
672 | ||
673 | static struct clk i2c_ick = { | |
674 | .name = "i2c_ick", | |
52650505 PW |
675 | .ops = &clkops_null, |
676 | .flags = CLOCK_NO_IDLE_PARENT, | |
677 | .parent = &armper_ck.clk, | |
678 | .recalc = &followparent_recalc, | |
679 | }; | |
680 | ||
681 | /* | |
682 | * clkdev integration | |
683 | */ | |
684 | ||
685 | static struct omap_clk omap_clks[] = { | |
686 | /* non-ULPD clocks */ | |
687 | CLK(NULL, "ck_ref", &ck_ref, CK_16XX | CK_1510 | CK_310 | CK_7XX), | |
e8ae6b6e | 688 | CLK(NULL, "ck_dpll1", &ck_dpll1, CK_16XX | CK_1510 | CK_310 | CK_7XX), |
52650505 PW |
689 | /* CK_GEN1 clocks */ |
690 | CLK(NULL, "ck_dpll1out", &ck_dpll1out.clk, CK_16XX), | |
691 | CLK(NULL, "ck_sossi", &sossi_ck, CK_16XX), | |
692 | CLK(NULL, "arm_ck", &arm_ck, CK_16XX | CK_1510 | CK_310), | |
693 | CLK(NULL, "armper_ck", &armper_ck.clk, CK_16XX | CK_1510 | CK_310), | |
77640aab | 694 | CLK("omap_gpio.0", "ick", &arm_gpio_ck, CK_1510 | CK_310), |
52650505 PW |
695 | CLK(NULL, "armxor_ck", &armxor_ck.clk, CK_16XX | CK_1510 | CK_310 | CK_7XX), |
696 | CLK(NULL, "armtim_ck", &armtim_ck.clk, CK_16XX | CK_1510 | CK_310), | |
697 | CLK("omap_wdt", "fck", &armwdt_ck.clk, CK_16XX | CK_1510 | CK_310), | |
698 | CLK("omap_wdt", "ick", &armper_ck.clk, CK_16XX), | |
699 | CLK("omap_wdt", "ick", &dummy_ck, CK_1510 | CK_310), | |
700 | CLK(NULL, "arminth_ck", &arminth_ck1510, CK_1510 | CK_310), | |
701 | CLK(NULL, "arminth_ck", &arminth_ck16xx, CK_16XX), | |
702 | /* CK_GEN2 clocks */ | |
703 | CLK(NULL, "dsp_ck", &dsp_ck, CK_16XX | CK_1510 | CK_310), | |
704 | CLK(NULL, "dspmmu_ck", &dspmmu_ck, CK_16XX | CK_1510 | CK_310), | |
705 | CLK(NULL, "dspper_ck", &dspper_ck, CK_16XX | CK_1510 | CK_310), | |
706 | CLK(NULL, "dspxor_ck", &dspxor_ck, CK_16XX | CK_1510 | CK_310), | |
707 | CLK(NULL, "dsptim_ck", &dsptim_ck, CK_16XX | CK_1510 | CK_310), | |
708 | /* CK_GEN3 clocks */ | |
709 | CLK(NULL, "tc_ck", &tc_ck.clk, CK_16XX | CK_1510 | CK_310 | CK_7XX), | |
710 | CLK(NULL, "tipb_ck", &tipb_ck, CK_1510 | CK_310), | |
711 | CLK(NULL, "l3_ocpi_ck", &l3_ocpi_ck, CK_16XX | CK_7XX), | |
712 | CLK(NULL, "tc1_ck", &tc1_ck, CK_16XX), | |
713 | CLK(NULL, "tc2_ck", &tc2_ck, CK_16XX), | |
714 | CLK(NULL, "dma_ck", &dma_ck, CK_16XX | CK_1510 | CK_310), | |
715 | CLK(NULL, "dma_lcdfree_ck", &dma_lcdfree_ck, CK_16XX), | |
e8ae6b6e | 716 | CLK(NULL, "api_ck", &api_ck.clk, CK_16XX | CK_1510 | CK_310 | CK_7XX), |
52650505 PW |
717 | CLK(NULL, "lb_ck", &lb_ck.clk, CK_1510 | CK_310), |
718 | CLK(NULL, "rhea1_ck", &rhea1_ck, CK_16XX), | |
719 | CLK(NULL, "rhea2_ck", &rhea2_ck, CK_16XX), | |
720 | CLK(NULL, "lcd_ck", &lcd_ck_16xx, CK_16XX | CK_7XX), | |
721 | CLK(NULL, "lcd_ck", &lcd_ck_1510.clk, CK_1510 | CK_310), | |
722 | /* ULPD clocks */ | |
723 | CLK(NULL, "uart1_ck", &uart1_1510, CK_1510 | CK_310), | |
724 | CLK(NULL, "uart1_ck", &uart1_16xx.clk, CK_16XX), | |
8b8fbd39 | 725 | CLK(NULL, "uart1_ck", &uart1_7xx, CK_7XX), |
52650505 | 726 | CLK(NULL, "uart2_ck", &uart2_ck, CK_16XX | CK_1510 | CK_310), |
8b8fbd39 | 727 | CLK(NULL, "uart2_ck", &uart2_7xx, CK_7XX), |
52650505 PW |
728 | CLK(NULL, "uart3_ck", &uart3_1510, CK_1510 | CK_310), |
729 | CLK(NULL, "uart3_ck", &uart3_16xx.clk, CK_16XX), | |
730 | CLK(NULL, "usb_clko", &usb_clko, CK_16XX | CK_1510 | CK_310), | |
731 | CLK(NULL, "usb_hhc_ck", &usb_hhc_ck1510, CK_1510 | CK_310), | |
732 | CLK(NULL, "usb_hhc_ck", &usb_hhc_ck16xx, CK_16XX), | |
733 | CLK(NULL, "usb_dc_ck", &usb_dc_ck, CK_16XX), | |
734 | CLK(NULL, "usb_dc_ck", &usb_dc_ck7xx, CK_7XX), | |
735 | CLK(NULL, "mclk", &mclk_1510, CK_1510 | CK_310), | |
736 | CLK(NULL, "mclk", &mclk_16xx, CK_16XX), | |
737 | CLK(NULL, "bclk", &bclk_1510, CK_1510 | CK_310), | |
738 | CLK(NULL, "bclk", &bclk_16xx, CK_16XX), | |
739 | CLK("mmci-omap.0", "fck", &mmc1_ck, CK_16XX | CK_1510 | CK_310), | |
740 | CLK("mmci-omap.0", "fck", &mmc3_ck, CK_7XX), | |
741 | CLK("mmci-omap.0", "ick", &armper_ck.clk, CK_16XX | CK_1510 | CK_310 | CK_7XX), | |
742 | CLK("mmci-omap.1", "fck", &mmc2_ck, CK_16XX), | |
743 | CLK("mmci-omap.1", "ick", &armper_ck.clk, CK_16XX), | |
744 | /* Virtual clocks */ | |
745 | CLK(NULL, "mpu", &virtual_ck_mpu, CK_16XX | CK_1510 | CK_310), | |
f7bb0d9a BC |
746 | CLK("omap_i2c.1", "fck", &i2c_fck, CK_16XX | CK_1510 | CK_310 | CK_7XX), |
747 | CLK("omap_i2c.1", "ick", &i2c_ick, CK_16XX), | |
748 | CLK("omap_i2c.1", "ick", &dummy_ck, CK_1510 | CK_310 | CK_7XX), | |
c5c4dce4 CM |
749 | CLK("omap1_spi100k.1", "fck", &dummy_ck, CK_7XX), |
750 | CLK("omap1_spi100k.1", "ick", &dummy_ck, CK_7XX), | |
751 | CLK("omap1_spi100k.2", "fck", &dummy_ck, CK_7XX), | |
752 | CLK("omap1_spi100k.2", "ick", &dummy_ck, CK_7XX), | |
52650505 PW |
753 | CLK("omap_uwire", "fck", &armxor_ck.clk, CK_16XX | CK_1510 | CK_310), |
754 | CLK("omap-mcbsp.1", "ick", &dspper_ck, CK_16XX), | |
755 | CLK("omap-mcbsp.1", "ick", &dummy_ck, CK_1510 | CK_310), | |
756 | CLK("omap-mcbsp.2", "ick", &armper_ck.clk, CK_16XX), | |
757 | CLK("omap-mcbsp.2", "ick", &dummy_ck, CK_1510 | CK_310), | |
758 | CLK("omap-mcbsp.3", "ick", &dspper_ck, CK_16XX), | |
759 | CLK("omap-mcbsp.3", "ick", &dummy_ck, CK_1510 | CK_310), | |
760 | CLK("omap-mcbsp.1", "fck", &dspxor_ck, CK_16XX | CK_1510 | CK_310), | |
761 | CLK("omap-mcbsp.2", "fck", &armper_ck.clk, CK_16XX | CK_1510 | CK_310), | |
762 | CLK("omap-mcbsp.3", "fck", &dspxor_ck, CK_16XX | CK_1510 | CK_310), | |
763 | }; | |
764 | ||
765 | /* | |
766 | * init | |
767 | */ | |
768 | ||
9b11769f | 769 | static struct clk_functions omap1_clk_functions = { |
52650505 PW |
770 | .clk_enable = omap1_clk_enable, |
771 | .clk_disable = omap1_clk_disable, | |
772 | .clk_round_rate = omap1_clk_round_rate, | |
773 | .clk_set_rate = omap1_clk_set_rate, | |
774 | .clk_disable_unused = omap1_clk_disable_unused, | |
775 | }; | |
776 | ||
e9b7086b TL |
777 | static void __init omap1_show_rates(void) |
778 | { | |
779 | pr_notice("Clocking rate (xtal/DPLL1/MPU): " | |
780 | "%ld.%01ld/%ld.%01ld/%ld.%01ld MHz\n", | |
781 | ck_ref.rate / 1000000, (ck_ref.rate / 100000) % 10, | |
782 | ck_dpll1.rate / 1000000, (ck_dpll1.rate / 100000) % 10, | |
783 | arm_ck.rate / 1000000, (arm_ck.rate / 100000) % 10); | |
784 | } | |
785 | ||
24ce2705 JK |
786 | u32 cpu_mask; |
787 | ||
52650505 PW |
788 | int __init omap1_clk_init(void) |
789 | { | |
790 | struct omap_clk *c; | |
791 | const struct omap_clock_config *info; | |
792 | int crystal_type = 0; /* Default 12 MHz */ | |
24ce2705 | 793 | u32 reg; |
52650505 PW |
794 | |
795 | #ifdef CONFIG_DEBUG_LL | |
796 | /* | |
797 | * Resets some clocks that may be left on from bootloader, | |
798 | * but leaves serial clocks on. | |
799 | */ | |
800 | omap_writel(0x3 << 29, MOD_CONF_CTRL_0); | |
801 | #endif | |
802 | ||
803 | /* USB_REQ_EN will be disabled later if necessary (usb_dc_ck) */ | |
804 | reg = omap_readw(SOFT_REQ_REG) & (1 << 4); | |
805 | omap_writew(reg, SOFT_REQ_REG); | |
806 | if (!cpu_is_omap15xx()) | |
807 | omap_writew(0, SOFT_REQ_REG2); | |
808 | ||
809 | clk_init(&omap1_clk_functions); | |
810 | ||
811 | /* By default all idlect1 clocks are allowed to idle */ | |
812 | arm_idlect1_mask = ~0; | |
813 | ||
814 | for (c = omap_clks; c < omap_clks + ARRAY_SIZE(omap_clks); c++) | |
815 | clk_preinit(c->lk.clk); | |
816 | ||
817 | cpu_mask = 0; | |
24ce2705 JK |
818 | if (cpu_is_omap1710()) |
819 | cpu_mask |= CK_1710; | |
52650505 PW |
820 | if (cpu_is_omap16xx()) |
821 | cpu_mask |= CK_16XX; | |
822 | if (cpu_is_omap1510()) | |
823 | cpu_mask |= CK_1510; | |
824 | if (cpu_is_omap7xx()) | |
825 | cpu_mask |= CK_7XX; | |
826 | if (cpu_is_omap310()) | |
827 | cpu_mask |= CK_310; | |
828 | ||
829 | for (c = omap_clks; c < omap_clks + ARRAY_SIZE(omap_clks); c++) | |
830 | if (c->cpu & cpu_mask) { | |
831 | clkdev_add(&c->lk); | |
832 | clk_register(c->lk.clk); | |
833 | } | |
834 | ||
835 | /* Pointers to these clocks are needed by code in clock.c */ | |
836 | api_ck_p = clk_get(NULL, "api_ck"); | |
837 | ck_dpll1_p = clk_get(NULL, "ck_dpll1"); | |
838 | ck_ref_p = clk_get(NULL, "ck_ref"); | |
839 | ||
840 | info = omap_get_config(OMAP_TAG_CLOCK, struct omap_clock_config); | |
841 | if (info != NULL) { | |
842 | if (!cpu_is_omap15xx()) | |
843 | crystal_type = info->system_clock_type; | |
844 | } | |
845 | ||
65ae65c9 JK |
846 | if (cpu_is_omap7xx()) |
847 | ck_ref.rate = 13000000; | |
848 | if (cpu_is_omap16xx() && crystal_type == 2) | |
52650505 | 849 | ck_ref.rate = 19200000; |
52650505 PW |
850 | |
851 | pr_info("Clocks: ARM_SYSST: 0x%04x DPLL_CTL: 0x%04x ARM_CKCTL: " | |
852 | "0x%04x\n", omap_readw(ARM_SYSST), omap_readw(DPLL_CTL), | |
853 | omap_readw(ARM_CKCTL)); | |
854 | ||
855 | /* We want to be in syncronous scalable mode */ | |
856 | omap_writew(0x1000, ARM_SYSST); | |
857 | ||
e9b7086b TL |
858 | |
859 | /* | |
860 | * Initially use the values set by bootloader. Determine PLL rate and | |
861 | * recalculate dependent clocks as if kernel had changed PLL or | |
862 | * divisors. See also omap1_clk_late_init() that can reprogram dpll1 | |
863 | * after the SRAM is initialized. | |
52650505 PW |
864 | */ |
865 | { | |
866 | unsigned pll_ctl_val = omap_readw(DPLL_CTL); | |
867 | ||
868 | ck_dpll1.rate = ck_ref.rate; /* Base xtal rate */ | |
869 | if (pll_ctl_val & 0x10) { | |
870 | /* PLL enabled, apply multiplier and divisor */ | |
871 | if (pll_ctl_val & 0xf80) | |
872 | ck_dpll1.rate *= (pll_ctl_val & 0xf80) >> 7; | |
873 | ck_dpll1.rate /= ((pll_ctl_val & 0x60) >> 5) + 1; | |
874 | } else { | |
875 | /* PLL disabled, apply bypass divisor */ | |
876 | switch (pll_ctl_val & 0xc) { | |
877 | case 0: | |
878 | break; | |
879 | case 0x4: | |
880 | ck_dpll1.rate /= 2; | |
881 | break; | |
882 | default: | |
883 | ck_dpll1.rate /= 4; | |
884 | break; | |
885 | } | |
886 | } | |
887 | } | |
52650505 PW |
888 | propagate_rate(&ck_dpll1); |
889 | /* Cache rates for clocks connected to ck_ref (not dpll1) */ | |
890 | propagate_rate(&ck_ref); | |
e9b7086b | 891 | omap1_show_rates(); |
65ae65c9 JK |
892 | if (machine_is_omap_perseus2() || machine_is_omap_fsample()) { |
893 | /* Select slicer output as OMAP input clock */ | |
894 | omap_writew(omap_readw(OMAP7XX_PCC_UPLD_CTRL) & ~0x1, | |
895 | OMAP7XX_PCC_UPLD_CTRL); | |
896 | } | |
52650505 PW |
897 | |
898 | /* Amstrad Delta wants BCLK high when inactive */ | |
899 | if (machine_is_ams_delta()) | |
900 | omap_writel(omap_readl(ULPD_CLOCK_CTRL) | | |
901 | (1 << SDW_MCLK_INV_BIT), | |
902 | ULPD_CLOCK_CTRL); | |
903 | ||
904 | /* Turn off DSP and ARM_TIMXO. Make sure ARM_INTHCK is not divided */ | |
905 | /* (on 730, bit 13 must not be cleared) */ | |
906 | if (cpu_is_omap7xx()) | |
907 | omap_writew(omap_readw(ARM_CKCTL) & 0x2fff, ARM_CKCTL); | |
908 | else | |
909 | omap_writew(omap_readw(ARM_CKCTL) & 0x0fff, ARM_CKCTL); | |
910 | ||
911 | /* Put DSP/MPUI into reset until needed */ | |
912 | omap_writew(0, ARM_RSTCT1); | |
913 | omap_writew(1, ARM_RSTCT2); | |
914 | omap_writew(0x400, ARM_IDLECT1); | |
915 | ||
916 | /* | |
917 | * According to OMAP5910 Erratum SYS_DMA_1, bit DMACK_REQ (bit 8) | |
918 | * of the ARM_IDLECT2 register must be set to zero. The power-on | |
919 | * default value of this bit is one. | |
920 | */ | |
921 | omap_writew(0x0000, ARM_IDLECT2); /* Turn LCD clock off also */ | |
922 | ||
923 | /* | |
924 | * Only enable those clocks we will need, let the drivers | |
925 | * enable other clocks as necessary | |
926 | */ | |
927 | clk_enable(&armper_ck.clk); | |
928 | clk_enable(&armxor_ck.clk); | |
929 | clk_enable(&armtim_ck.clk); /* This should be done by timer code */ | |
930 | ||
931 | if (cpu_is_omap15xx()) | |
932 | clk_enable(&arm_gpio_ck); | |
933 | ||
934 | return 0; | |
935 | } | |
e9b7086b TL |
936 | |
937 | #define OMAP1_DPLL1_SANE_VALUE 60000000 | |
938 | ||
939 | void __init omap1_clk_late_init(void) | |
940 | { | |
6560ee07 JK |
941 | unsigned long rate = ck_dpll1.rate; |
942 | ||
e9b7086b TL |
943 | /* Find the highest supported frequency and enable it */ |
944 | if (omap1_select_table_rate(&virtual_ck_mpu, ~0)) { | |
945 | pr_err("System frequencies not set, using default. Check your config.\n"); | |
f9e5908f JK |
946 | /* |
947 | * Reprogramming the DPLL is tricky, it must be done from SRAM. | |
948 | */ | |
949 | omap_sram_reprogram_clock(0x2290, 0x0005); | |
e9b7086b TL |
950 | ck_dpll1.rate = OMAP1_DPLL1_SANE_VALUE; |
951 | } | |
952 | propagate_rate(&ck_dpll1); | |
953 | omap1_show_rates(); | |
6560ee07 | 954 | loops_per_jiffy = cpufreq_scale(loops_per_jiffy, rate, ck_dpll1.rate); |
e9b7086b | 955 | } |