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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 | ||
e4c060db | 25 | #include "soc.h" |
52650505 | 26 | |
2c799cef | 27 | #include <mach/hardware.h> |
b924b204 | 28 | #include <mach/usb.h> /* for OTG_BASE */ |
2c799cef | 29 | |
2e3ee9f4 | 30 | #include "iomap.h" |
52650505 | 31 | #include "clock.h" |
bf027ca1 | 32 | #include "sram.h" |
52650505 | 33 | |
fb2fc920 PW |
34 | /* Some ARM_IDLECT1 bit shifts - used in struct arm_idlect1_clk */ |
35 | #define IDL_CLKOUT_ARM_SHIFT 12 | |
36 | #define IDLTIM_ARM_SHIFT 9 | |
37 | #define IDLAPI_ARM_SHIFT 8 | |
38 | #define IDLIF_ARM_SHIFT 6 | |
39 | #define IDLLB_ARM_SHIFT 4 /* undocumented? */ | |
40 | #define OMAP1510_IDLLCD_ARM_SHIFT 3 /* undocumented? */ | |
41 | #define IDLPER_ARM_SHIFT 2 | |
42 | #define IDLXORP_ARM_SHIFT 1 | |
43 | #define IDLWDT_ARM_SHIFT 0 | |
44 | ||
45 | /* Some MOD_CONF_CTRL_0 bit shifts - used in struct clk.enable_bit */ | |
46 | #define CONF_MOD_UART3_CLK_MODE_R 31 | |
47 | #define CONF_MOD_UART2_CLK_MODE_R 30 | |
48 | #define CONF_MOD_UART1_CLK_MODE_R 29 | |
49 | #define CONF_MOD_MMC_SD_CLK_REQ_R 23 | |
50 | #define CONF_MOD_MCBSP3_AUXON 20 | |
51 | ||
52 | /* Some MOD_CONF_CTRL_1 bit shifts - used in struct clk.enable_bit */ | |
53 | #define CONF_MOD_SOSSI_CLK_EN_R 16 | |
54 | ||
55 | /* Some OTG_SYSCON_2-specific bit fields */ | |
56 | #define OTG_SYSCON_2_UHOST_EN_SHIFT 8 | |
57 | ||
58 | /* Some SOFT_REQ_REG bit fields - used in struct clk.enable_bit */ | |
59 | #define SOFT_MMC2_DPLL_REQ_SHIFT 13 | |
60 | #define SOFT_MMC_DPLL_REQ_SHIFT 12 | |
61 | #define SOFT_UART3_DPLL_REQ_SHIFT 11 | |
62 | #define SOFT_UART2_DPLL_REQ_SHIFT 10 | |
63 | #define SOFT_UART1_DPLL_REQ_SHIFT 9 | |
64 | #define SOFT_USB_OTG_DPLL_REQ_SHIFT 8 | |
65 | #define SOFT_CAM_DPLL_REQ_SHIFT 7 | |
66 | #define SOFT_COM_MCKO_REQ_SHIFT 6 | |
67 | #define SOFT_PERIPH_REQ_SHIFT 5 /* sys_ck gate for UART2 ? */ | |
68 | #define USB_REQ_EN_SHIFT 4 | |
69 | #define SOFT_USB_REQ_SHIFT 3 /* sys_ck gate for USB host? */ | |
70 | #define SOFT_SDW_REQ_SHIFT 2 /* sys_ck gate for Bluetooth? */ | |
71 | #define SOFT_COM_REQ_SHIFT 1 /* sys_ck gate for com proc? */ | |
72 | #define SOFT_DPLL_REQ_SHIFT 0 | |
73 | ||
74 | /* | |
52650505 | 75 | * Omap1 clocks |
fb2fc920 | 76 | */ |
52650505 | 77 | |
52650505 PW |
78 | static struct clk ck_ref = { |
79 | .name = "ck_ref", | |
80 | .ops = &clkops_null, | |
81 | .rate = 12000000, | |
82 | }; | |
83 | ||
84 | static struct clk ck_dpll1 = { | |
85 | .name = "ck_dpll1", | |
86 | .ops = &clkops_null, | |
87 | .parent = &ck_ref, | |
88 | }; | |
89 | ||
90 | /* | |
91 | * FIXME: This clock seems to be necessary but no-one has asked for its | |
92 | * activation. [ FIX: SoSSI, SSR ] | |
93 | */ | |
94 | static struct arm_idlect1_clk ck_dpll1out = { | |
95 | .clk = { | |
96 | .name = "ck_dpll1out", | |
97 | .ops = &clkops_generic, | |
98 | .parent = &ck_dpll1, | |
99 | .flags = CLOCK_IDLE_CONTROL | ENABLE_REG_32BIT | | |
100 | ENABLE_ON_INIT, | |
101 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
102 | .enable_bit = EN_CKOUT_ARM, | |
103 | .recalc = &followparent_recalc, | |
104 | }, | |
fb2fc920 | 105 | .idlect_shift = IDL_CLKOUT_ARM_SHIFT, |
52650505 PW |
106 | }; |
107 | ||
108 | static struct clk sossi_ck = { | |
109 | .name = "ck_sossi", | |
110 | .ops = &clkops_generic, | |
111 | .parent = &ck_dpll1out.clk, | |
112 | .flags = CLOCK_NO_IDLE_PARENT | ENABLE_REG_32BIT, | |
113 | .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_1), | |
fb2fc920 | 114 | .enable_bit = CONF_MOD_SOSSI_CLK_EN_R, |
52650505 PW |
115 | .recalc = &omap1_sossi_recalc, |
116 | .set_rate = &omap1_set_sossi_rate, | |
117 | }; | |
118 | ||
119 | static struct clk arm_ck = { | |
120 | .name = "arm_ck", | |
121 | .ops = &clkops_null, | |
122 | .parent = &ck_dpll1, | |
123 | .rate_offset = CKCTL_ARMDIV_OFFSET, | |
124 | .recalc = &omap1_ckctl_recalc, | |
125 | .round_rate = omap1_clk_round_rate_ckctl_arm, | |
126 | .set_rate = omap1_clk_set_rate_ckctl_arm, | |
127 | }; | |
128 | ||
129 | static struct arm_idlect1_clk armper_ck = { | |
130 | .clk = { | |
131 | .name = "armper_ck", | |
132 | .ops = &clkops_generic, | |
133 | .parent = &ck_dpll1, | |
134 | .flags = CLOCK_IDLE_CONTROL, | |
135 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
136 | .enable_bit = EN_PERCK, | |
137 | .rate_offset = CKCTL_PERDIV_OFFSET, | |
138 | .recalc = &omap1_ckctl_recalc, | |
139 | .round_rate = omap1_clk_round_rate_ckctl_arm, | |
140 | .set_rate = omap1_clk_set_rate_ckctl_arm, | |
141 | }, | |
fb2fc920 | 142 | .idlect_shift = IDLPER_ARM_SHIFT, |
52650505 PW |
143 | }; |
144 | ||
145 | /* | |
146 | * FIXME: This clock seems to be necessary but no-one has asked for its | |
147 | * activation. [ GPIO code for 1510 ] | |
148 | */ | |
149 | static struct clk arm_gpio_ck = { | |
77640aab | 150 | .name = "ick", |
52650505 PW |
151 | .ops = &clkops_generic, |
152 | .parent = &ck_dpll1, | |
153 | .flags = ENABLE_ON_INIT, | |
154 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
155 | .enable_bit = EN_GPIOCK, | |
156 | .recalc = &followparent_recalc, | |
157 | }; | |
158 | ||
159 | static struct arm_idlect1_clk armxor_ck = { | |
160 | .clk = { | |
161 | .name = "armxor_ck", | |
162 | .ops = &clkops_generic, | |
163 | .parent = &ck_ref, | |
164 | .flags = CLOCK_IDLE_CONTROL, | |
165 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
166 | .enable_bit = EN_XORPCK, | |
167 | .recalc = &followparent_recalc, | |
168 | }, | |
fb2fc920 | 169 | .idlect_shift = IDLXORP_ARM_SHIFT, |
52650505 PW |
170 | }; |
171 | ||
172 | static struct arm_idlect1_clk armtim_ck = { | |
173 | .clk = { | |
174 | .name = "armtim_ck", | |
175 | .ops = &clkops_generic, | |
176 | .parent = &ck_ref, | |
177 | .flags = CLOCK_IDLE_CONTROL, | |
178 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
179 | .enable_bit = EN_TIMCK, | |
180 | .recalc = &followparent_recalc, | |
181 | }, | |
fb2fc920 | 182 | .idlect_shift = IDLTIM_ARM_SHIFT, |
52650505 PW |
183 | }; |
184 | ||
185 | static struct arm_idlect1_clk armwdt_ck = { | |
186 | .clk = { | |
187 | .name = "armwdt_ck", | |
188 | .ops = &clkops_generic, | |
189 | .parent = &ck_ref, | |
190 | .flags = CLOCK_IDLE_CONTROL, | |
191 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
192 | .enable_bit = EN_WDTCK, | |
0dfc242f PW |
193 | .fixed_div = 14, |
194 | .recalc = &omap_fixed_divisor_recalc, | |
52650505 | 195 | }, |
fb2fc920 | 196 | .idlect_shift = IDLWDT_ARM_SHIFT, |
52650505 PW |
197 | }; |
198 | ||
199 | static struct clk arminth_ck16xx = { | |
200 | .name = "arminth_ck", | |
201 | .ops = &clkops_null, | |
202 | .parent = &arm_ck, | |
203 | .recalc = &followparent_recalc, | |
204 | /* Note: On 16xx the frequency can be divided by 2 by programming | |
205 | * ARM_CKCTL:ARM_INTHCK_SEL(14) to 1 | |
206 | * | |
207 | * 1510 version is in TC clocks. | |
208 | */ | |
209 | }; | |
210 | ||
211 | static struct clk dsp_ck = { | |
212 | .name = "dsp_ck", | |
213 | .ops = &clkops_generic, | |
214 | .parent = &ck_dpll1, | |
215 | .enable_reg = OMAP1_IO_ADDRESS(ARM_CKCTL), | |
216 | .enable_bit = EN_DSPCK, | |
217 | .rate_offset = CKCTL_DSPDIV_OFFSET, | |
218 | .recalc = &omap1_ckctl_recalc, | |
219 | .round_rate = omap1_clk_round_rate_ckctl_arm, | |
220 | .set_rate = omap1_clk_set_rate_ckctl_arm, | |
221 | }; | |
222 | ||
223 | static struct clk dspmmu_ck = { | |
224 | .name = "dspmmu_ck", | |
225 | .ops = &clkops_null, | |
226 | .parent = &ck_dpll1, | |
227 | .rate_offset = CKCTL_DSPMMUDIV_OFFSET, | |
228 | .recalc = &omap1_ckctl_recalc, | |
229 | .round_rate = omap1_clk_round_rate_ckctl_arm, | |
230 | .set_rate = omap1_clk_set_rate_ckctl_arm, | |
231 | }; | |
232 | ||
233 | static struct clk dspper_ck = { | |
234 | .name = "dspper_ck", | |
235 | .ops = &clkops_dspck, | |
236 | .parent = &ck_dpll1, | |
237 | .enable_reg = DSP_IDLECT2, | |
238 | .enable_bit = EN_PERCK, | |
239 | .rate_offset = CKCTL_PERDIV_OFFSET, | |
240 | .recalc = &omap1_ckctl_recalc_dsp_domain, | |
241 | .round_rate = omap1_clk_round_rate_ckctl_arm, | |
242 | .set_rate = &omap1_clk_set_rate_dsp_domain, | |
243 | }; | |
244 | ||
245 | static struct clk dspxor_ck = { | |
246 | .name = "dspxor_ck", | |
247 | .ops = &clkops_dspck, | |
248 | .parent = &ck_ref, | |
249 | .enable_reg = DSP_IDLECT2, | |
250 | .enable_bit = EN_XORPCK, | |
251 | .recalc = &followparent_recalc, | |
252 | }; | |
253 | ||
254 | static struct clk dsptim_ck = { | |
255 | .name = "dsptim_ck", | |
256 | .ops = &clkops_dspck, | |
257 | .parent = &ck_ref, | |
258 | .enable_reg = DSP_IDLECT2, | |
259 | .enable_bit = EN_DSPTIMCK, | |
260 | .recalc = &followparent_recalc, | |
261 | }; | |
262 | ||
52650505 PW |
263 | static struct arm_idlect1_clk tc_ck = { |
264 | .clk = { | |
265 | .name = "tc_ck", | |
266 | .ops = &clkops_null, | |
267 | .parent = &ck_dpll1, | |
268 | .flags = CLOCK_IDLE_CONTROL, | |
269 | .rate_offset = CKCTL_TCDIV_OFFSET, | |
270 | .recalc = &omap1_ckctl_recalc, | |
271 | .round_rate = omap1_clk_round_rate_ckctl_arm, | |
272 | .set_rate = omap1_clk_set_rate_ckctl_arm, | |
273 | }, | |
fb2fc920 | 274 | .idlect_shift = IDLIF_ARM_SHIFT, |
52650505 PW |
275 | }; |
276 | ||
277 | static struct clk arminth_ck1510 = { | |
278 | .name = "arminth_ck", | |
279 | .ops = &clkops_null, | |
280 | .parent = &tc_ck.clk, | |
281 | .recalc = &followparent_recalc, | |
282 | /* Note: On 1510 the frequency follows TC_CK | |
283 | * | |
284 | * 16xx version is in MPU clocks. | |
285 | */ | |
286 | }; | |
287 | ||
288 | static struct clk tipb_ck = { | |
289 | /* No-idle controlled by "tc_ck" */ | |
290 | .name = "tipb_ck", | |
291 | .ops = &clkops_null, | |
292 | .parent = &tc_ck.clk, | |
293 | .recalc = &followparent_recalc, | |
294 | }; | |
295 | ||
296 | static struct clk l3_ocpi_ck = { | |
297 | /* No-idle controlled by "tc_ck" */ | |
298 | .name = "l3_ocpi_ck", | |
299 | .ops = &clkops_generic, | |
300 | .parent = &tc_ck.clk, | |
301 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT3), | |
302 | .enable_bit = EN_OCPI_CK, | |
303 | .recalc = &followparent_recalc, | |
304 | }; | |
305 | ||
306 | static struct clk tc1_ck = { | |
307 | .name = "tc1_ck", | |
308 | .ops = &clkops_generic, | |
309 | .parent = &tc_ck.clk, | |
310 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT3), | |
311 | .enable_bit = EN_TC1_CK, | |
312 | .recalc = &followparent_recalc, | |
313 | }; | |
314 | ||
315 | /* | |
316 | * FIXME: This clock seems to be necessary but no-one has asked for its | |
317 | * activation. [ pm.c (SRAM), CCP, Camera ] | |
318 | */ | |
319 | static struct clk tc2_ck = { | |
320 | .name = "tc2_ck", | |
321 | .ops = &clkops_generic, | |
322 | .parent = &tc_ck.clk, | |
323 | .flags = ENABLE_ON_INIT, | |
324 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT3), | |
325 | .enable_bit = EN_TC2_CK, | |
326 | .recalc = &followparent_recalc, | |
327 | }; | |
328 | ||
329 | static struct clk dma_ck = { | |
330 | /* No-idle controlled by "tc_ck" */ | |
331 | .name = "dma_ck", | |
332 | .ops = &clkops_null, | |
333 | .parent = &tc_ck.clk, | |
334 | .recalc = &followparent_recalc, | |
335 | }; | |
336 | ||
337 | static struct clk dma_lcdfree_ck = { | |
338 | .name = "dma_lcdfree_ck", | |
339 | .ops = &clkops_null, | |
340 | .parent = &tc_ck.clk, | |
341 | .recalc = &followparent_recalc, | |
342 | }; | |
343 | ||
344 | static struct arm_idlect1_clk api_ck = { | |
345 | .clk = { | |
346 | .name = "api_ck", | |
347 | .ops = &clkops_generic, | |
348 | .parent = &tc_ck.clk, | |
349 | .flags = CLOCK_IDLE_CONTROL, | |
350 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
351 | .enable_bit = EN_APICK, | |
352 | .recalc = &followparent_recalc, | |
353 | }, | |
fb2fc920 | 354 | .idlect_shift = IDLAPI_ARM_SHIFT, |
52650505 PW |
355 | }; |
356 | ||
357 | static struct arm_idlect1_clk lb_ck = { | |
358 | .clk = { | |
359 | .name = "lb_ck", | |
360 | .ops = &clkops_generic, | |
361 | .parent = &tc_ck.clk, | |
362 | .flags = CLOCK_IDLE_CONTROL, | |
363 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
364 | .enable_bit = EN_LBCK, | |
365 | .recalc = &followparent_recalc, | |
366 | }, | |
fb2fc920 | 367 | .idlect_shift = IDLLB_ARM_SHIFT, |
52650505 PW |
368 | }; |
369 | ||
370 | static struct clk rhea1_ck = { | |
371 | .name = "rhea1_ck", | |
372 | .ops = &clkops_null, | |
373 | .parent = &tc_ck.clk, | |
374 | .recalc = &followparent_recalc, | |
375 | }; | |
376 | ||
377 | static struct clk rhea2_ck = { | |
378 | .name = "rhea2_ck", | |
379 | .ops = &clkops_null, | |
380 | .parent = &tc_ck.clk, | |
381 | .recalc = &followparent_recalc, | |
382 | }; | |
383 | ||
384 | static struct clk lcd_ck_16xx = { | |
385 | .name = "lcd_ck", | |
386 | .ops = &clkops_generic, | |
387 | .parent = &ck_dpll1, | |
388 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
389 | .enable_bit = EN_LCDCK, | |
390 | .rate_offset = CKCTL_LCDDIV_OFFSET, | |
391 | .recalc = &omap1_ckctl_recalc, | |
392 | .round_rate = omap1_clk_round_rate_ckctl_arm, | |
393 | .set_rate = omap1_clk_set_rate_ckctl_arm, | |
394 | }; | |
395 | ||
396 | static struct arm_idlect1_clk lcd_ck_1510 = { | |
397 | .clk = { | |
398 | .name = "lcd_ck", | |
399 | .ops = &clkops_generic, | |
400 | .parent = &ck_dpll1, | |
401 | .flags = CLOCK_IDLE_CONTROL, | |
402 | .enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2), | |
403 | .enable_bit = EN_LCDCK, | |
404 | .rate_offset = CKCTL_LCDDIV_OFFSET, | |
405 | .recalc = &omap1_ckctl_recalc, | |
406 | .round_rate = omap1_clk_round_rate_ckctl_arm, | |
407 | .set_rate = omap1_clk_set_rate_ckctl_arm, | |
408 | }, | |
fb2fc920 | 409 | .idlect_shift = OMAP1510_IDLLCD_ARM_SHIFT, |
52650505 PW |
410 | }; |
411 | ||
fb2fc920 PW |
412 | /* |
413 | * XXX The enable_bit here is misused - it simply switches between 12MHz | |
414 | * and 48MHz. Reimplement with clksel. | |
415 | * | |
416 | * XXX does this need SYSC register handling? | |
417 | */ | |
52650505 PW |
418 | static struct clk uart1_1510 = { |
419 | .name = "uart1_ck", | |
420 | .ops = &clkops_null, | |
421 | /* Direct from ULPD, no real parent */ | |
422 | .parent = &armper_ck.clk, | |
423 | .rate = 12000000, | |
424 | .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, | |
425 | .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), | |
fb2fc920 | 426 | .enable_bit = CONF_MOD_UART1_CLK_MODE_R, |
52650505 PW |
427 | .set_rate = &omap1_set_uart_rate, |
428 | .recalc = &omap1_uart_recalc, | |
429 | }; | |
430 | ||
fb2fc920 PW |
431 | /* |
432 | * XXX The enable_bit here is misused - it simply switches between 12MHz | |
433 | * and 48MHz. Reimplement with clksel. | |
434 | * | |
435 | * XXX SYSC register handling does not belong in the clock framework | |
436 | */ | |
52650505 PW |
437 | static struct uart_clk uart1_16xx = { |
438 | .clk = { | |
439 | .name = "uart1_ck", | |
fb2fc920 | 440 | .ops = &clkops_uart_16xx, |
52650505 PW |
441 | /* Direct from ULPD, no real parent */ |
442 | .parent = &armper_ck.clk, | |
443 | .rate = 48000000, | |
51c19541 | 444 | .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, |
52650505 | 445 | .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), |
fb2fc920 | 446 | .enable_bit = CONF_MOD_UART1_CLK_MODE_R, |
52650505 PW |
447 | }, |
448 | .sysc_addr = 0xfffb0054, | |
449 | }; | |
450 | ||
fb2fc920 PW |
451 | /* |
452 | * XXX The enable_bit here is misused - it simply switches between 12MHz | |
453 | * and 48MHz. Reimplement with clksel. | |
454 | * | |
455 | * XXX does this need SYSC register handling? | |
456 | */ | |
52650505 PW |
457 | static struct clk uart2_ck = { |
458 | .name = "uart2_ck", | |
459 | .ops = &clkops_null, | |
460 | /* Direct from ULPD, no real parent */ | |
461 | .parent = &armper_ck.clk, | |
462 | .rate = 12000000, | |
463 | .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, | |
464 | .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), | |
fb2fc920 | 465 | .enable_bit = CONF_MOD_UART2_CLK_MODE_R, |
52650505 PW |
466 | .set_rate = &omap1_set_uart_rate, |
467 | .recalc = &omap1_uart_recalc, | |
468 | }; | |
469 | ||
fb2fc920 PW |
470 | /* |
471 | * XXX The enable_bit here is misused - it simply switches between 12MHz | |
472 | * and 48MHz. Reimplement with clksel. | |
473 | * | |
474 | * XXX does this need SYSC register handling? | |
475 | */ | |
52650505 PW |
476 | static struct clk uart3_1510 = { |
477 | .name = "uart3_ck", | |
478 | .ops = &clkops_null, | |
479 | /* Direct from ULPD, no real parent */ | |
480 | .parent = &armper_ck.clk, | |
481 | .rate = 12000000, | |
482 | .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, | |
483 | .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), | |
fb2fc920 | 484 | .enable_bit = CONF_MOD_UART3_CLK_MODE_R, |
52650505 PW |
485 | .set_rate = &omap1_set_uart_rate, |
486 | .recalc = &omap1_uart_recalc, | |
487 | }; | |
488 | ||
fb2fc920 PW |
489 | /* |
490 | * XXX The enable_bit here is misused - it simply switches between 12MHz | |
491 | * and 48MHz. Reimplement with clksel. | |
492 | * | |
493 | * XXX SYSC register handling does not belong in the clock framework | |
494 | */ | |
52650505 PW |
495 | static struct uart_clk uart3_16xx = { |
496 | .clk = { | |
497 | .name = "uart3_ck", | |
fb2fc920 | 498 | .ops = &clkops_uart_16xx, |
52650505 PW |
499 | /* Direct from ULPD, no real parent */ |
500 | .parent = &armper_ck.clk, | |
501 | .rate = 48000000, | |
51c19541 | 502 | .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, |
52650505 | 503 | .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), |
fb2fc920 | 504 | .enable_bit = CONF_MOD_UART3_CLK_MODE_R, |
52650505 PW |
505 | }, |
506 | .sysc_addr = 0xfffb9854, | |
507 | }; | |
508 | ||
509 | static struct clk usb_clko = { /* 6 MHz output on W4_USB_CLKO */ | |
510 | .name = "usb_clko", | |
511 | .ops = &clkops_generic, | |
512 | /* Direct from ULPD, no parent */ | |
513 | .rate = 6000000, | |
51c19541 | 514 | .flags = ENABLE_REG_32BIT, |
52650505 PW |
515 | .enable_reg = OMAP1_IO_ADDRESS(ULPD_CLOCK_CTRL), |
516 | .enable_bit = USB_MCLK_EN_BIT, | |
517 | }; | |
518 | ||
519 | static struct clk usb_hhc_ck1510 = { | |
520 | .name = "usb_hhc_ck", | |
521 | .ops = &clkops_generic, | |
522 | /* Direct from ULPD, no parent */ | |
523 | .rate = 48000000, /* Actually 2 clocks, 12MHz and 48MHz */ | |
51c19541 | 524 | .flags = ENABLE_REG_32BIT, |
52650505 PW |
525 | .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), |
526 | .enable_bit = USB_HOST_HHC_UHOST_EN, | |
527 | }; | |
528 | ||
529 | static struct clk usb_hhc_ck16xx = { | |
530 | .name = "usb_hhc_ck", | |
531 | .ops = &clkops_generic, | |
532 | /* Direct from ULPD, no parent */ | |
533 | .rate = 48000000, | |
534 | /* OTG_SYSCON_2.OTG_PADEN == 0 (not 1510-compatible) */ | |
51c19541 | 535 | .flags = ENABLE_REG_32BIT, |
52650505 | 536 | .enable_reg = OMAP1_IO_ADDRESS(OTG_BASE + 0x08), /* OTG_SYSCON_2 */ |
fb2fc920 | 537 | .enable_bit = OTG_SYSCON_2_UHOST_EN_SHIFT |
52650505 PW |
538 | }; |
539 | ||
540 | static struct clk usb_dc_ck = { | |
52650505 PW |
541 | .name = "usb_dc_ck", |
542 | .ops = &clkops_generic, | |
543 | /* Direct from ULPD, no parent */ | |
544 | .rate = 48000000, | |
52650505 | 545 | .enable_reg = OMAP1_IO_ADDRESS(SOFT_REQ_REG), |
fb2fc920 | 546 | .enable_bit = SOFT_USB_OTG_DPLL_REQ_SHIFT, |
52650505 PW |
547 | }; |
548 | ||
8b8fbd39 CM |
549 | static struct clk uart1_7xx = { |
550 | .name = "uart1_ck", | |
551 | .ops = &clkops_generic, | |
552 | /* Direct from ULPD, no parent */ | |
553 | .rate = 12000000, | |
554 | .enable_reg = OMAP1_IO_ADDRESS(SOFT_REQ_REG), | |
555 | .enable_bit = 9, | |
556 | }; | |
557 | ||
558 | static struct clk uart2_7xx = { | |
559 | .name = "uart2_ck", | |
560 | .ops = &clkops_generic, | |
561 | /* Direct from ULPD, no parent */ | |
562 | .rate = 12000000, | |
563 | .enable_reg = OMAP1_IO_ADDRESS(SOFT_REQ_REG), | |
564 | .enable_bit = 11, | |
565 | }; | |
566 | ||
52650505 PW |
567 | static struct clk mclk_1510 = { |
568 | .name = "mclk", | |
569 | .ops = &clkops_generic, | |
570 | /* Direct from ULPD, no parent. May be enabled by ext hardware. */ | |
571 | .rate = 12000000, | |
52650505 | 572 | .enable_reg = OMAP1_IO_ADDRESS(SOFT_REQ_REG), |
fb2fc920 | 573 | .enable_bit = SOFT_COM_MCKO_REQ_SHIFT, |
52650505 PW |
574 | }; |
575 | ||
576 | static struct clk mclk_16xx = { | |
577 | .name = "mclk", | |
578 | .ops = &clkops_generic, | |
579 | /* Direct from ULPD, no parent. May be enabled by ext hardware. */ | |
580 | .enable_reg = OMAP1_IO_ADDRESS(COM_CLK_DIV_CTRL_SEL), | |
581 | .enable_bit = COM_ULPD_PLL_CLK_REQ, | |
582 | .set_rate = &omap1_set_ext_clk_rate, | |
583 | .round_rate = &omap1_round_ext_clk_rate, | |
584 | .init = &omap1_init_ext_clk, | |
585 | }; | |
586 | ||
587 | static struct clk bclk_1510 = { | |
588 | .name = "bclk", | |
589 | .ops = &clkops_generic, | |
590 | /* Direct from ULPD, no parent. May be enabled by ext hardware. */ | |
591 | .rate = 12000000, | |
52650505 PW |
592 | }; |
593 | ||
594 | static struct clk bclk_16xx = { | |
595 | .name = "bclk", | |
596 | .ops = &clkops_generic, | |
597 | /* Direct from ULPD, no parent. May be enabled by ext hardware. */ | |
598 | .enable_reg = OMAP1_IO_ADDRESS(SWD_CLK_DIV_CTRL_SEL), | |
599 | .enable_bit = SWD_ULPD_PLL_CLK_REQ, | |
600 | .set_rate = &omap1_set_ext_clk_rate, | |
601 | .round_rate = &omap1_round_ext_clk_rate, | |
602 | .init = &omap1_init_ext_clk, | |
603 | }; | |
604 | ||
605 | static struct clk mmc1_ck = { | |
b92c170d | 606 | .name = "mmc1_ck", |
52650505 PW |
607 | .ops = &clkops_generic, |
608 | /* Functional clock is direct from ULPD, interface clock is ARMPER */ | |
609 | .parent = &armper_ck.clk, | |
610 | .rate = 48000000, | |
51c19541 | 611 | .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, |
52650505 | 612 | .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), |
fb2fc920 | 613 | .enable_bit = CONF_MOD_MMC_SD_CLK_REQ_R, |
52650505 PW |
614 | }; |
615 | ||
fb2fc920 PW |
616 | /* |
617 | * XXX MOD_CONF_CTRL_0 bit 20 is defined in the 1510 TRM as | |
618 | * CONF_MOD_MCBSP3_AUXON ?? | |
619 | */ | |
52650505 | 620 | static struct clk mmc2_ck = { |
b92c170d | 621 | .name = "mmc2_ck", |
52650505 PW |
622 | .ops = &clkops_generic, |
623 | /* Functional clock is direct from ULPD, interface clock is ARMPER */ | |
624 | .parent = &armper_ck.clk, | |
625 | .rate = 48000000, | |
51c19541 | 626 | .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, |
52650505 PW |
627 | .enable_reg = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0), |
628 | .enable_bit = 20, | |
629 | }; | |
630 | ||
631 | static struct clk mmc3_ck = { | |
b92c170d | 632 | .name = "mmc3_ck", |
52650505 PW |
633 | .ops = &clkops_generic, |
634 | /* Functional clock is direct from ULPD, interface clock is ARMPER */ | |
635 | .parent = &armper_ck.clk, | |
636 | .rate = 48000000, | |
51c19541 | 637 | .flags = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT, |
52650505 | 638 | .enable_reg = OMAP1_IO_ADDRESS(SOFT_REQ_REG), |
fb2fc920 | 639 | .enable_bit = SOFT_MMC_DPLL_REQ_SHIFT, |
52650505 PW |
640 | }; |
641 | ||
642 | static struct clk virtual_ck_mpu = { | |
643 | .name = "mpu", | |
644 | .ops = &clkops_null, | |
645 | .parent = &arm_ck, /* Is smarter alias for */ | |
646 | .recalc = &followparent_recalc, | |
647 | .set_rate = &omap1_select_table_rate, | |
648 | .round_rate = &omap1_round_to_table_rate, | |
649 | }; | |
650 | ||
651 | /* virtual functional clock domain for I2C. Just for making sure that ARMXOR_CK | |
652 | remains active during MPU idle whenever this is enabled */ | |
653 | static struct clk i2c_fck = { | |
654 | .name = "i2c_fck", | |
52650505 PW |
655 | .ops = &clkops_null, |
656 | .flags = CLOCK_NO_IDLE_PARENT, | |
657 | .parent = &armxor_ck.clk, | |
658 | .recalc = &followparent_recalc, | |
659 | }; | |
660 | ||
661 | static struct clk i2c_ick = { | |
662 | .name = "i2c_ick", | |
52650505 PW |
663 | .ops = &clkops_null, |
664 | .flags = CLOCK_NO_IDLE_PARENT, | |
665 | .parent = &armper_ck.clk, | |
666 | .recalc = &followparent_recalc, | |
667 | }; | |
668 | ||
669 | /* | |
670 | * clkdev integration | |
671 | */ | |
672 | ||
673 | static struct omap_clk omap_clks[] = { | |
674 | /* non-ULPD clocks */ | |
675 | CLK(NULL, "ck_ref", &ck_ref, CK_16XX | CK_1510 | CK_310 | CK_7XX), | |
e8ae6b6e | 676 | CLK(NULL, "ck_dpll1", &ck_dpll1, CK_16XX | CK_1510 | CK_310 | CK_7XX), |
52650505 PW |
677 | /* CK_GEN1 clocks */ |
678 | CLK(NULL, "ck_dpll1out", &ck_dpll1out.clk, CK_16XX), | |
679 | CLK(NULL, "ck_sossi", &sossi_ck, CK_16XX), | |
680 | CLK(NULL, "arm_ck", &arm_ck, CK_16XX | CK_1510 | CK_310), | |
681 | CLK(NULL, "armper_ck", &armper_ck.clk, CK_16XX | CK_1510 | CK_310), | |
77640aab | 682 | CLK("omap_gpio.0", "ick", &arm_gpio_ck, CK_1510 | CK_310), |
52650505 PW |
683 | CLK(NULL, "armxor_ck", &armxor_ck.clk, CK_16XX | CK_1510 | CK_310 | CK_7XX), |
684 | CLK(NULL, "armtim_ck", &armtim_ck.clk, CK_16XX | CK_1510 | CK_310), | |
685 | CLK("omap_wdt", "fck", &armwdt_ck.clk, CK_16XX | CK_1510 | CK_310), | |
686 | CLK("omap_wdt", "ick", &armper_ck.clk, CK_16XX), | |
687 | CLK("omap_wdt", "ick", &dummy_ck, CK_1510 | CK_310), | |
688 | CLK(NULL, "arminth_ck", &arminth_ck1510, CK_1510 | CK_310), | |
689 | CLK(NULL, "arminth_ck", &arminth_ck16xx, CK_16XX), | |
690 | /* CK_GEN2 clocks */ | |
691 | CLK(NULL, "dsp_ck", &dsp_ck, CK_16XX | CK_1510 | CK_310), | |
692 | CLK(NULL, "dspmmu_ck", &dspmmu_ck, CK_16XX | CK_1510 | CK_310), | |
693 | CLK(NULL, "dspper_ck", &dspper_ck, CK_16XX | CK_1510 | CK_310), | |
694 | CLK(NULL, "dspxor_ck", &dspxor_ck, CK_16XX | CK_1510 | CK_310), | |
695 | CLK(NULL, "dsptim_ck", &dsptim_ck, CK_16XX | CK_1510 | CK_310), | |
696 | /* CK_GEN3 clocks */ | |
697 | CLK(NULL, "tc_ck", &tc_ck.clk, CK_16XX | CK_1510 | CK_310 | CK_7XX), | |
698 | CLK(NULL, "tipb_ck", &tipb_ck, CK_1510 | CK_310), | |
699 | CLK(NULL, "l3_ocpi_ck", &l3_ocpi_ck, CK_16XX | CK_7XX), | |
700 | CLK(NULL, "tc1_ck", &tc1_ck, CK_16XX), | |
701 | CLK(NULL, "tc2_ck", &tc2_ck, CK_16XX), | |
702 | CLK(NULL, "dma_ck", &dma_ck, CK_16XX | CK_1510 | CK_310), | |
703 | CLK(NULL, "dma_lcdfree_ck", &dma_lcdfree_ck, CK_16XX), | |
e8ae6b6e | 704 | CLK(NULL, "api_ck", &api_ck.clk, CK_16XX | CK_1510 | CK_310 | CK_7XX), |
52650505 PW |
705 | CLK(NULL, "lb_ck", &lb_ck.clk, CK_1510 | CK_310), |
706 | CLK(NULL, "rhea1_ck", &rhea1_ck, CK_16XX), | |
707 | CLK(NULL, "rhea2_ck", &rhea2_ck, CK_16XX), | |
708 | CLK(NULL, "lcd_ck", &lcd_ck_16xx, CK_16XX | CK_7XX), | |
709 | CLK(NULL, "lcd_ck", &lcd_ck_1510.clk, CK_1510 | CK_310), | |
710 | /* ULPD clocks */ | |
711 | CLK(NULL, "uart1_ck", &uart1_1510, CK_1510 | CK_310), | |
712 | CLK(NULL, "uart1_ck", &uart1_16xx.clk, CK_16XX), | |
8b8fbd39 | 713 | CLK(NULL, "uart1_ck", &uart1_7xx, CK_7XX), |
52650505 | 714 | CLK(NULL, "uart2_ck", &uart2_ck, CK_16XX | CK_1510 | CK_310), |
8b8fbd39 | 715 | CLK(NULL, "uart2_ck", &uart2_7xx, CK_7XX), |
52650505 PW |
716 | CLK(NULL, "uart3_ck", &uart3_1510, CK_1510 | CK_310), |
717 | CLK(NULL, "uart3_ck", &uart3_16xx.clk, CK_16XX), | |
718 | CLK(NULL, "usb_clko", &usb_clko, CK_16XX | CK_1510 | CK_310), | |
719 | CLK(NULL, "usb_hhc_ck", &usb_hhc_ck1510, CK_1510 | CK_310), | |
720 | CLK(NULL, "usb_hhc_ck", &usb_hhc_ck16xx, CK_16XX), | |
13872ebb | 721 | CLK(NULL, "usb_dc_ck", &usb_dc_ck, CK_16XX | CK_7XX), |
52650505 PW |
722 | CLK(NULL, "mclk", &mclk_1510, CK_1510 | CK_310), |
723 | CLK(NULL, "mclk", &mclk_16xx, CK_16XX), | |
724 | CLK(NULL, "bclk", &bclk_1510, CK_1510 | CK_310), | |
725 | CLK(NULL, "bclk", &bclk_16xx, CK_16XX), | |
726 | CLK("mmci-omap.0", "fck", &mmc1_ck, CK_16XX | CK_1510 | CK_310), | |
727 | CLK("mmci-omap.0", "fck", &mmc3_ck, CK_7XX), | |
728 | CLK("mmci-omap.0", "ick", &armper_ck.clk, CK_16XX | CK_1510 | CK_310 | CK_7XX), | |
729 | CLK("mmci-omap.1", "fck", &mmc2_ck, CK_16XX), | |
730 | CLK("mmci-omap.1", "ick", &armper_ck.clk, CK_16XX), | |
731 | /* Virtual clocks */ | |
732 | CLK(NULL, "mpu", &virtual_ck_mpu, CK_16XX | CK_1510 | CK_310), | |
f7bb0d9a BC |
733 | CLK("omap_i2c.1", "fck", &i2c_fck, CK_16XX | CK_1510 | CK_310 | CK_7XX), |
734 | CLK("omap_i2c.1", "ick", &i2c_ick, CK_16XX), | |
735 | CLK("omap_i2c.1", "ick", &dummy_ck, CK_1510 | CK_310 | CK_7XX), | |
c5c4dce4 CM |
736 | CLK("omap1_spi100k.1", "fck", &dummy_ck, CK_7XX), |
737 | CLK("omap1_spi100k.1", "ick", &dummy_ck, CK_7XX), | |
738 | CLK("omap1_spi100k.2", "fck", &dummy_ck, CK_7XX), | |
739 | CLK("omap1_spi100k.2", "ick", &dummy_ck, CK_7XX), | |
52650505 PW |
740 | CLK("omap_uwire", "fck", &armxor_ck.clk, CK_16XX | CK_1510 | CK_310), |
741 | CLK("omap-mcbsp.1", "ick", &dspper_ck, CK_16XX), | |
742 | CLK("omap-mcbsp.1", "ick", &dummy_ck, CK_1510 | CK_310), | |
743 | CLK("omap-mcbsp.2", "ick", &armper_ck.clk, CK_16XX), | |
744 | CLK("omap-mcbsp.2", "ick", &dummy_ck, CK_1510 | CK_310), | |
745 | CLK("omap-mcbsp.3", "ick", &dspper_ck, CK_16XX), | |
746 | CLK("omap-mcbsp.3", "ick", &dummy_ck, CK_1510 | CK_310), | |
747 | CLK("omap-mcbsp.1", "fck", &dspxor_ck, CK_16XX | CK_1510 | CK_310), | |
748 | CLK("omap-mcbsp.2", "fck", &armper_ck.clk, CK_16XX | CK_1510 | CK_310), | |
749 | CLK("omap-mcbsp.3", "fck", &dspxor_ck, CK_16XX | CK_1510 | CK_310), | |
750 | }; | |
751 | ||
752 | /* | |
753 | * init | |
754 | */ | |
755 | ||
e9b7086b TL |
756 | static void __init omap1_show_rates(void) |
757 | { | |
7852ec05 PW |
758 | pr_notice("Clocking rate (xtal/DPLL1/MPU): %ld.%01ld/%ld.%01ld/%ld.%01ld MHz\n", |
759 | ck_ref.rate / 1000000, (ck_ref.rate / 100000) % 10, | |
760 | ck_dpll1.rate / 1000000, (ck_dpll1.rate / 100000) % 10, | |
761 | arm_ck.rate / 1000000, (arm_ck.rate / 100000) % 10); | |
e9b7086b TL |
762 | } |
763 | ||
24ce2705 JK |
764 | u32 cpu_mask; |
765 | ||
52650505 PW |
766 | int __init omap1_clk_init(void) |
767 | { | |
768 | struct omap_clk *c; | |
52650505 | 769 | int crystal_type = 0; /* Default 12 MHz */ |
24ce2705 | 770 | u32 reg; |
52650505 PW |
771 | |
772 | #ifdef CONFIG_DEBUG_LL | |
773 | /* | |
774 | * Resets some clocks that may be left on from bootloader, | |
775 | * but leaves serial clocks on. | |
776 | */ | |
777 | omap_writel(0x3 << 29, MOD_CONF_CTRL_0); | |
778 | #endif | |
779 | ||
780 | /* USB_REQ_EN will be disabled later if necessary (usb_dc_ck) */ | |
781 | reg = omap_readw(SOFT_REQ_REG) & (1 << 4); | |
782 | omap_writew(reg, SOFT_REQ_REG); | |
783 | if (!cpu_is_omap15xx()) | |
784 | omap_writew(0, SOFT_REQ_REG2); | |
785 | ||
52650505 PW |
786 | /* By default all idlect1 clocks are allowed to idle */ |
787 | arm_idlect1_mask = ~0; | |
788 | ||
789 | for (c = omap_clks; c < omap_clks + ARRAY_SIZE(omap_clks); c++) | |
790 | clk_preinit(c->lk.clk); | |
791 | ||
792 | cpu_mask = 0; | |
24ce2705 JK |
793 | if (cpu_is_omap1710()) |
794 | cpu_mask |= CK_1710; | |
52650505 PW |
795 | if (cpu_is_omap16xx()) |
796 | cpu_mask |= CK_16XX; | |
797 | if (cpu_is_omap1510()) | |
798 | cpu_mask |= CK_1510; | |
799 | if (cpu_is_omap7xx()) | |
800 | cpu_mask |= CK_7XX; | |
801 | if (cpu_is_omap310()) | |
802 | cpu_mask |= CK_310; | |
803 | ||
804 | for (c = omap_clks; c < omap_clks + ARRAY_SIZE(omap_clks); c++) | |
805 | if (c->cpu & cpu_mask) { | |
806 | clkdev_add(&c->lk); | |
807 | clk_register(c->lk.clk); | |
808 | } | |
809 | ||
810 | /* Pointers to these clocks are needed by code in clock.c */ | |
811 | api_ck_p = clk_get(NULL, "api_ck"); | |
812 | ck_dpll1_p = clk_get(NULL, "ck_dpll1"); | |
813 | ck_ref_p = clk_get(NULL, "ck_ref"); | |
814 | ||
65ae65c9 JK |
815 | if (cpu_is_omap7xx()) |
816 | ck_ref.rate = 13000000; | |
817 | if (cpu_is_omap16xx() && crystal_type == 2) | |
52650505 | 818 | ck_ref.rate = 19200000; |
52650505 | 819 | |
7852ec05 PW |
820 | pr_info("Clocks: ARM_SYSST: 0x%04x DPLL_CTL: 0x%04x ARM_CKCTL: 0x%04x\n", |
821 | omap_readw(ARM_SYSST), omap_readw(DPLL_CTL), | |
52650505 PW |
822 | omap_readw(ARM_CKCTL)); |
823 | ||
824 | /* We want to be in syncronous scalable mode */ | |
825 | omap_writew(0x1000, ARM_SYSST); | |
826 | ||
e9b7086b TL |
827 | |
828 | /* | |
829 | * Initially use the values set by bootloader. Determine PLL rate and | |
830 | * recalculate dependent clocks as if kernel had changed PLL or | |
831 | * divisors. See also omap1_clk_late_init() that can reprogram dpll1 | |
832 | * after the SRAM is initialized. | |
52650505 PW |
833 | */ |
834 | { | |
835 | unsigned pll_ctl_val = omap_readw(DPLL_CTL); | |
836 | ||
837 | ck_dpll1.rate = ck_ref.rate; /* Base xtal rate */ | |
838 | if (pll_ctl_val & 0x10) { | |
839 | /* PLL enabled, apply multiplier and divisor */ | |
840 | if (pll_ctl_val & 0xf80) | |
841 | ck_dpll1.rate *= (pll_ctl_val & 0xf80) >> 7; | |
842 | ck_dpll1.rate /= ((pll_ctl_val & 0x60) >> 5) + 1; | |
843 | } else { | |
844 | /* PLL disabled, apply bypass divisor */ | |
845 | switch (pll_ctl_val & 0xc) { | |
846 | case 0: | |
847 | break; | |
848 | case 0x4: | |
849 | ck_dpll1.rate /= 2; | |
850 | break; | |
851 | default: | |
852 | ck_dpll1.rate /= 4; | |
853 | break; | |
854 | } | |
855 | } | |
856 | } | |
52650505 PW |
857 | propagate_rate(&ck_dpll1); |
858 | /* Cache rates for clocks connected to ck_ref (not dpll1) */ | |
859 | propagate_rate(&ck_ref); | |
e9b7086b | 860 | omap1_show_rates(); |
65ae65c9 JK |
861 | if (machine_is_omap_perseus2() || machine_is_omap_fsample()) { |
862 | /* Select slicer output as OMAP input clock */ | |
863 | omap_writew(omap_readw(OMAP7XX_PCC_UPLD_CTRL) & ~0x1, | |
864 | OMAP7XX_PCC_UPLD_CTRL); | |
865 | } | |
52650505 PW |
866 | |
867 | /* Amstrad Delta wants BCLK high when inactive */ | |
868 | if (machine_is_ams_delta()) | |
869 | omap_writel(omap_readl(ULPD_CLOCK_CTRL) | | |
870 | (1 << SDW_MCLK_INV_BIT), | |
871 | ULPD_CLOCK_CTRL); | |
872 | ||
873 | /* Turn off DSP and ARM_TIMXO. Make sure ARM_INTHCK is not divided */ | |
874 | /* (on 730, bit 13 must not be cleared) */ | |
875 | if (cpu_is_omap7xx()) | |
876 | omap_writew(omap_readw(ARM_CKCTL) & 0x2fff, ARM_CKCTL); | |
877 | else | |
878 | omap_writew(omap_readw(ARM_CKCTL) & 0x0fff, ARM_CKCTL); | |
879 | ||
880 | /* Put DSP/MPUI into reset until needed */ | |
881 | omap_writew(0, ARM_RSTCT1); | |
882 | omap_writew(1, ARM_RSTCT2); | |
883 | omap_writew(0x400, ARM_IDLECT1); | |
884 | ||
885 | /* | |
886 | * According to OMAP5910 Erratum SYS_DMA_1, bit DMACK_REQ (bit 8) | |
887 | * of the ARM_IDLECT2 register must be set to zero. The power-on | |
888 | * default value of this bit is one. | |
889 | */ | |
890 | omap_writew(0x0000, ARM_IDLECT2); /* Turn LCD clock off also */ | |
891 | ||
892 | /* | |
893 | * Only enable those clocks we will need, let the drivers | |
894 | * enable other clocks as necessary | |
895 | */ | |
896 | clk_enable(&armper_ck.clk); | |
897 | clk_enable(&armxor_ck.clk); | |
898 | clk_enable(&armtim_ck.clk); /* This should be done by timer code */ | |
899 | ||
900 | if (cpu_is_omap15xx()) | |
901 | clk_enable(&arm_gpio_ck); | |
902 | ||
903 | return 0; | |
904 | } | |
e9b7086b TL |
905 | |
906 | #define OMAP1_DPLL1_SANE_VALUE 60000000 | |
907 | ||
908 | void __init omap1_clk_late_init(void) | |
909 | { | |
6560ee07 JK |
910 | unsigned long rate = ck_dpll1.rate; |
911 | ||
e9b7086b TL |
912 | /* Find the highest supported frequency and enable it */ |
913 | if (omap1_select_table_rate(&virtual_ck_mpu, ~0)) { | |
914 | pr_err("System frequencies not set, using default. Check your config.\n"); | |
f9e5908f JK |
915 | /* |
916 | * Reprogramming the DPLL is tricky, it must be done from SRAM. | |
917 | */ | |
918 | omap_sram_reprogram_clock(0x2290, 0x0005); | |
e9b7086b TL |
919 | ck_dpll1.rate = OMAP1_DPLL1_SANE_VALUE; |
920 | } | |
921 | propagate_rate(&ck_dpll1); | |
922 | omap1_show_rates(); | |
6560ee07 | 923 | loops_per_jiffy = cpufreq_scale(loops_per_jiffy, rate, ck_dpll1.rate); |
e9b7086b | 924 | } |