1 /* linux/arch/arm/plat-s3c64xx/clock.c
3 * Copyright 2008 Openmoko, Inc.
4 * Copyright 2008 Simtec Electronics
5 * Ben Dooks <ben@simtec.co.uk>
6 * http://armlinux.simtec.co.uk/
8 * S3C64XX Base clock support
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
15 #include <linux/init.h>
16 #include <linux/module.h>
17 #include <linux/interrupt.h>
18 #include <linux/ioport.h>
19 #include <linux/clk.h>
20 #include <linux/err.h>
23 #include <mach/hardware.h>
26 #include <mach/regs-sys.h>
27 #include <mach/regs-clock.h>
30 #include <plat/devs.h>
31 #include <plat/cpu-freq.h>
32 #include <plat/clock.h>
33 #include <plat/clock-clksrc.h>
36 /* fin_apll, fin_mpll and fin_epll are all the same clock, which we call
37 * ext_xtal_mux for want of an actual name from the manual.
40 static struct clk clk_ext_xtal_mux = {
44 #define clk_fin_apll clk_ext_xtal_mux
45 #define clk_fin_mpll clk_ext_xtal_mux
46 #define clk_fin_epll clk_ext_xtal_mux
48 #define clk_fout_mpll clk_mpll
49 #define clk_fout_epll clk_epll
56 struct clk clk_27m = {
61 static int clk_48m_ctrl(struct clk *clk, int enable)
66 /* can't rely on clock lock, this register has other usages */
67 local_irq_save(flags);
69 val = __raw_readl(S3C64XX_OTHERS);
71 val |= S3C64XX_OTHERS_USBMASK;
73 val &= ~S3C64XX_OTHERS_USBMASK;
75 __raw_writel(val, S3C64XX_OTHERS);
76 local_irq_restore(flags);
81 struct clk clk_48m = {
84 .enable = clk_48m_ctrl,
87 struct clk clk_xusbxti = {
92 static int inline s3c64xx_gate(void __iomem *reg,
96 unsigned int ctrlbit = clk->ctrlbit;
99 con = __raw_readl(reg);
106 __raw_writel(con, reg);
110 static int s3c64xx_pclk_ctrl(struct clk *clk, int enable)
112 return s3c64xx_gate(S3C_PCLK_GATE, clk, enable);
115 static int s3c64xx_hclk_ctrl(struct clk *clk, int enable)
117 return s3c64xx_gate(S3C_HCLK_GATE, clk, enable);
120 int s3c64xx_sclk_ctrl(struct clk *clk, int enable)
122 return s3c64xx_gate(S3C_SCLK_GATE, clk, enable);
125 static struct clk init_clocks_off[] = {
132 .enable = s3c64xx_pclk_ctrl,
133 .ctrlbit = S3C_CLKCON_PCLK_RTC,
137 .enable = s3c64xx_pclk_ctrl,
138 .ctrlbit = S3C_CLKCON_PCLK_TSADC,
141 .devname = "s3c2440-i2c.0",
143 .enable = s3c64xx_pclk_ctrl,
144 .ctrlbit = S3C_CLKCON_PCLK_IIC,
147 .devname = "s3c2440-i2c.1",
149 .enable = s3c64xx_pclk_ctrl,
150 .ctrlbit = S3C6410_CLKCON_PCLK_I2C1,
153 .devname = "samsung-i2s.0",
155 .enable = s3c64xx_pclk_ctrl,
156 .ctrlbit = S3C_CLKCON_PCLK_IIS0,
159 .devname = "samsung-i2s.1",
161 .enable = s3c64xx_pclk_ctrl,
162 .ctrlbit = S3C_CLKCON_PCLK_IIS1,
164 #ifdef CONFIG_CPU_S3C6410
167 .enable = s3c64xx_pclk_ctrl,
168 .ctrlbit = S3C6410_CLKCON_PCLK_IIS2,
173 .enable = s3c64xx_pclk_ctrl,
174 .ctrlbit = S3C_CLKCON_PCLK_KEYPAD,
177 .devname = "s3c6410-spi.0",
179 .enable = s3c64xx_pclk_ctrl,
180 .ctrlbit = S3C_CLKCON_PCLK_SPI0,
183 .devname = "s3c6410-spi.1",
185 .enable = s3c64xx_pclk_ctrl,
186 .ctrlbit = S3C_CLKCON_PCLK_SPI1,
189 .devname = "s3c-sdhci.0",
191 .enable = s3c64xx_sclk_ctrl,
192 .ctrlbit = S3C_CLKCON_SCLK_MMC0_48,
195 .devname = "s3c-sdhci.1",
197 .enable = s3c64xx_sclk_ctrl,
198 .ctrlbit = S3C_CLKCON_SCLK_MMC1_48,
201 .devname = "s3c-sdhci.2",
203 .enable = s3c64xx_sclk_ctrl,
204 .ctrlbit = S3C_CLKCON_SCLK_MMC2_48,
208 .ctrlbit = S3C_CLKCON_PCLK_AC97,
212 .enable = s3c64xx_hclk_ctrl,
213 .ctrlbit = S3C_CLKCON_HCLK_IHOST,
217 .enable = s3c64xx_hclk_ctrl,
218 .ctrlbit = S3C_CLKCON_HCLK_DMA0,
222 .enable = s3c64xx_hclk_ctrl,
223 .ctrlbit = S3C_CLKCON_HCLK_DMA1,
227 .enable = s3c64xx_hclk_ctrl,
228 .ctrlbit = S3C_CLKCON_HCLK_3DSE,
230 .name = "hclk_secur",
232 .enable = s3c64xx_hclk_ctrl,
233 .ctrlbit = S3C_CLKCON_HCLK_SECUR,
237 .enable = s3c64xx_hclk_ctrl,
238 .ctrlbit = S3C_CLKCON_HCLK_SDMA1,
242 .enable = s3c64xx_hclk_ctrl,
243 .ctrlbit = S3C_CLKCON_HCLK_SDMA0,
247 .enable = s3c64xx_hclk_ctrl,
248 .ctrlbit = S3C_CLKCON_HCLK_JPEG,
252 .enable = s3c64xx_hclk_ctrl,
253 .ctrlbit = S3C_CLKCON_HCLK_CAMIF,
255 .name = "hclk_scaler",
257 .enable = s3c64xx_hclk_ctrl,
258 .ctrlbit = S3C_CLKCON_HCLK_SCALER,
262 .enable = s3c64xx_hclk_ctrl,
263 .ctrlbit = S3C_CLKCON_HCLK_2D,
267 .enable = s3c64xx_hclk_ctrl,
268 .ctrlbit = S3C_CLKCON_HCLK_TV,
272 .enable = s3c64xx_hclk_ctrl,
273 .ctrlbit = S3C_CLKCON_HCLK_POST0,
277 .enable = s3c64xx_hclk_ctrl,
278 .ctrlbit = S3C_CLKCON_HCLK_ROT,
282 .enable = s3c64xx_hclk_ctrl,
283 .ctrlbit = S3C_CLKCON_HCLK_MFC,
287 .enable = s3c64xx_pclk_ctrl,
288 .ctrlbit = S3C_CLKCON_PCLK_MFC,
291 .enable = s3c64xx_sclk_ctrl,
292 .ctrlbit = S3C_CLKCON_SCLK_DAC27,
295 .enable = s3c64xx_sclk_ctrl,
296 .ctrlbit = S3C_CLKCON_SCLK_TV27,
299 .enable = s3c64xx_sclk_ctrl,
300 .ctrlbit = S3C_CLKCON_SCLK_SCALER27,
302 .name = "sclk_scaler",
303 .enable = s3c64xx_sclk_ctrl,
304 .ctrlbit = S3C_CLKCON_SCLK_SCALER,
307 .enable = s3c64xx_sclk_ctrl,
308 .ctrlbit = S3C_CLKCON_SCLK_POST0_27,
311 .enable = s3c64xx_sclk_ctrl,
312 .ctrlbit = S3C_CLKCON_SCLK_SECUR,
315 .enable = s3c64xx_sclk_ctrl,
316 .ctrlbit = S3C_CLKCON_SCLK_MFC,
319 .enable = s3c64xx_sclk_ctrl,
320 .ctrlbit = S3C_CLKCON_SCLK_JPEG,
324 static struct clk clk_48m_spi0 = {
326 .devname = "s3c6410-spi.0",
328 .enable = s3c64xx_sclk_ctrl,
329 .ctrlbit = S3C_CLKCON_SCLK_SPI0_48,
332 static struct clk clk_48m_spi1 = {
334 .devname = "s3c6410-spi.1",
336 .enable = s3c64xx_sclk_ctrl,
337 .ctrlbit = S3C_CLKCON_SCLK_SPI1_48,
340 static struct clk init_clocks[] = {
344 .enable = s3c64xx_hclk_ctrl,
345 .ctrlbit = S3C_CLKCON_HCLK_LCD,
349 .enable = s3c64xx_pclk_ctrl,
350 .ctrlbit = S3C_CLKCON_PCLK_GPIO,
354 .enable = s3c64xx_hclk_ctrl,
355 .ctrlbit = S3C_CLKCON_HCLK_UHOST,
359 .enable = s3c64xx_hclk_ctrl,
360 .ctrlbit = S3C_CLKCON_HCLK_USB,
364 .enable = s3c64xx_pclk_ctrl,
365 .ctrlbit = S3C_CLKCON_PCLK_PWM,
368 .devname = "s3c6400-uart.0",
370 .enable = s3c64xx_pclk_ctrl,
371 .ctrlbit = S3C_CLKCON_PCLK_UART0,
374 .devname = "s3c6400-uart.1",
376 .enable = s3c64xx_pclk_ctrl,
377 .ctrlbit = S3C_CLKCON_PCLK_UART1,
380 .devname = "s3c6400-uart.2",
382 .enable = s3c64xx_pclk_ctrl,
383 .ctrlbit = S3C_CLKCON_PCLK_UART2,
386 .devname = "s3c6400-uart.3",
388 .enable = s3c64xx_pclk_ctrl,
389 .ctrlbit = S3C_CLKCON_PCLK_UART3,
393 .ctrlbit = S3C_CLKCON_PCLK_WDT,
397 static struct clk clk_hsmmc0 = {
399 .devname = "s3c-sdhci.0",
401 .enable = s3c64xx_hclk_ctrl,
402 .ctrlbit = S3C_CLKCON_HCLK_HSMMC0,
405 static struct clk clk_hsmmc1 = {
407 .devname = "s3c-sdhci.1",
409 .enable = s3c64xx_hclk_ctrl,
410 .ctrlbit = S3C_CLKCON_HCLK_HSMMC1,
413 static struct clk clk_hsmmc2 = {
415 .devname = "s3c-sdhci.2",
417 .enable = s3c64xx_hclk_ctrl,
418 .ctrlbit = S3C_CLKCON_HCLK_HSMMC2,
421 static struct clk clk_fout_apll = {
425 static struct clk *clk_src_apll_list[] = {
427 [1] = &clk_fout_apll,
430 static struct clksrc_sources clk_src_apll = {
431 .sources = clk_src_apll_list,
432 .nr_sources = ARRAY_SIZE(clk_src_apll_list),
435 static struct clksrc_clk clk_mout_apll = {
439 .reg_src = { .reg = S3C_CLK_SRC, .shift = 0, .size = 1 },
440 .sources = &clk_src_apll,
443 static struct clk *clk_src_epll_list[] = {
445 [1] = &clk_fout_epll,
448 static struct clksrc_sources clk_src_epll = {
449 .sources = clk_src_epll_list,
450 .nr_sources = ARRAY_SIZE(clk_src_epll_list),
453 static struct clksrc_clk clk_mout_epll = {
457 .reg_src = { .reg = S3C_CLK_SRC, .shift = 2, .size = 1 },
458 .sources = &clk_src_epll,
461 static struct clk *clk_src_mpll_list[] = {
463 [1] = &clk_fout_mpll,
466 static struct clksrc_sources clk_src_mpll = {
467 .sources = clk_src_mpll_list,
468 .nr_sources = ARRAY_SIZE(clk_src_mpll_list),
471 static struct clksrc_clk clk_mout_mpll = {
475 .reg_src = { .reg = S3C_CLK_SRC, .shift = 1, .size = 1 },
476 .sources = &clk_src_mpll,
479 static unsigned int armclk_mask;
481 static unsigned long s3c64xx_clk_arm_get_rate(struct clk *clk)
483 unsigned long rate = clk_get_rate(clk->parent);
486 /* divisor mask starts at bit0, so no need to shift */
487 clkdiv = __raw_readl(S3C_CLK_DIV0) & armclk_mask;
489 return rate / (clkdiv + 1);
492 static unsigned long s3c64xx_clk_arm_round_rate(struct clk *clk,
495 unsigned long parent = clk_get_rate(clk->parent);
501 div = (parent / rate) - 1;
502 if (div > armclk_mask)
505 return parent / (div + 1);
508 static int s3c64xx_clk_arm_set_rate(struct clk *clk, unsigned long rate)
510 unsigned long parent = clk_get_rate(clk->parent);
514 if (rate < parent / (armclk_mask + 1))
517 rate = clk_round_rate(clk, rate);
518 div = clk_get_rate(clk->parent) / rate;
520 val = __raw_readl(S3C_CLK_DIV0);
523 __raw_writel(val, S3C_CLK_DIV0);
529 static struct clk clk_arm = {
531 .parent = &clk_mout_apll.clk,
532 .ops = &(struct clk_ops) {
533 .get_rate = s3c64xx_clk_arm_get_rate,
534 .set_rate = s3c64xx_clk_arm_set_rate,
535 .round_rate = s3c64xx_clk_arm_round_rate,
539 static unsigned long s3c64xx_clk_doutmpll_get_rate(struct clk *clk)
541 unsigned long rate = clk_get_rate(clk->parent);
543 printk(KERN_DEBUG "%s: parent is %ld\n", __func__, rate);
545 if (__raw_readl(S3C_CLK_DIV0) & S3C6400_CLKDIV0_MPLL_MASK)
551 static struct clk_ops clk_dout_ops = {
552 .get_rate = s3c64xx_clk_doutmpll_get_rate,
555 static struct clk clk_dout_mpll = {
557 .parent = &clk_mout_mpll.clk,
558 .ops = &clk_dout_ops,
561 static struct clk *clkset_spi_mmc_list[] = {
568 static struct clksrc_sources clkset_spi_mmc = {
569 .sources = clkset_spi_mmc_list,
570 .nr_sources = ARRAY_SIZE(clkset_spi_mmc_list),
573 static struct clk *clkset_irda_list[] = {
580 static struct clksrc_sources clkset_irda = {
581 .sources = clkset_irda_list,
582 .nr_sources = ARRAY_SIZE(clkset_irda_list),
585 static struct clk *clkset_uart_list[] = {
592 static struct clksrc_sources clkset_uart = {
593 .sources = clkset_uart_list,
594 .nr_sources = ARRAY_SIZE(clkset_uart_list),
597 static struct clk *clkset_uhost_list[] = {
604 static struct clksrc_sources clkset_uhost = {
605 .sources = clkset_uhost_list,
606 .nr_sources = ARRAY_SIZE(clkset_uhost_list),
609 /* The peripheral clocks are all controlled via clocksource followed
610 * by an optional divider and gate stage. We currently roll this into
611 * one clock which hides the intermediate clock from the mux.
613 * Note, the JPEG clock can only be an even divider...
615 * The scaler and LCD clocks depend on the S3C64XX version, and also
616 * have a common parent divisor so are not included here.
619 /* clocks that feed other parts of the clock source tree */
621 static struct clk clk_iis_cd0 = {
622 .name = "iis_cdclk0",
625 static struct clk clk_iis_cd1 = {
626 .name = "iis_cdclk1",
629 static struct clk clk_iisv4_cd = {
630 .name = "iis_cdclk_v4",
633 static struct clk clk_pcm_cd = {
637 static struct clk *clkset_audio0_list[] = {
638 [0] = &clk_mout_epll.clk,
639 [1] = &clk_dout_mpll,
645 static struct clksrc_sources clkset_audio0 = {
646 .sources = clkset_audio0_list,
647 .nr_sources = ARRAY_SIZE(clkset_audio0_list),
650 static struct clk *clkset_audio1_list[] = {
651 [0] = &clk_mout_epll.clk,
652 [1] = &clk_dout_mpll,
658 static struct clksrc_sources clkset_audio1 = {
659 .sources = clkset_audio1_list,
660 .nr_sources = ARRAY_SIZE(clkset_audio1_list),
663 static struct clk *clkset_audio2_list[] = {
664 [0] = &clk_mout_epll.clk,
665 [1] = &clk_dout_mpll,
671 static struct clksrc_sources clkset_audio2 = {
672 .sources = clkset_audio2_list,
673 .nr_sources = ARRAY_SIZE(clkset_audio2_list),
676 static struct clksrc_clk clksrcs[] = {
679 .name = "usb-bus-host",
680 .ctrlbit = S3C_CLKCON_SCLK_UHOST,
681 .enable = s3c64xx_sclk_ctrl,
683 .reg_src = { .reg = S3C_CLK_SRC, .shift = 5, .size = 2 },
684 .reg_div = { .reg = S3C_CLK_DIV1, .shift = 20, .size = 4 },
685 .sources = &clkset_uhost,
689 .devname = "samsung-i2s.0",
690 .ctrlbit = S3C_CLKCON_SCLK_AUDIO0,
691 .enable = s3c64xx_sclk_ctrl,
693 .reg_src = { .reg = S3C_CLK_SRC, .shift = 7, .size = 3 },
694 .reg_div = { .reg = S3C_CLK_DIV2, .shift = 8, .size = 4 },
695 .sources = &clkset_audio0,
699 .devname = "samsung-i2s.1",
700 .ctrlbit = S3C_CLKCON_SCLK_AUDIO1,
701 .enable = s3c64xx_sclk_ctrl,
703 .reg_src = { .reg = S3C_CLK_SRC, .shift = 10, .size = 3 },
704 .reg_div = { .reg = S3C_CLK_DIV2, .shift = 12, .size = 4 },
705 .sources = &clkset_audio1,
709 .devname = "samsung-i2s.2",
710 .ctrlbit = S3C6410_CLKCON_SCLK_AUDIO2,
711 .enable = s3c64xx_sclk_ctrl,
713 .reg_src = { .reg = S3C6410_CLK_SRC2, .shift = 0, .size = 3 },
714 .reg_div = { .reg = S3C_CLK_DIV2, .shift = 24, .size = 4 },
715 .sources = &clkset_audio2,
719 .ctrlbit = S3C_CLKCON_SCLK_IRDA,
720 .enable = s3c64xx_sclk_ctrl,
722 .reg_src = { .reg = S3C_CLK_SRC, .shift = 24, .size = 2 },
723 .reg_div = { .reg = S3C_CLK_DIV2, .shift = 20, .size = 4 },
724 .sources = &clkset_irda,
728 .ctrlbit = S3C_CLKCON_SCLK_CAM,
729 .enable = s3c64xx_sclk_ctrl,
732 .reg_div = { .reg = S3C_CLK_DIV0, .shift = 20, .size = 4 },
736 /* Where does UCLK0 come from? */
737 static struct clksrc_clk clk_sclk_uclk = {
740 .ctrlbit = S3C_CLKCON_SCLK_UART,
741 .enable = s3c64xx_sclk_ctrl,
743 .reg_src = { .reg = S3C_CLK_SRC, .shift = 13, .size = 1 },
744 .reg_div = { .reg = S3C_CLK_DIV2, .shift = 16, .size = 4 },
745 .sources = &clkset_uart,
748 static struct clksrc_clk clk_sclk_mmc0 = {
751 .devname = "s3c-sdhci.0",
752 .ctrlbit = S3C_CLKCON_SCLK_MMC0,
753 .enable = s3c64xx_sclk_ctrl,
755 .reg_src = { .reg = S3C_CLK_SRC, .shift = 18, .size = 2 },
756 .reg_div = { .reg = S3C_CLK_DIV1, .shift = 0, .size = 4 },
757 .sources = &clkset_spi_mmc,
760 static struct clksrc_clk clk_sclk_mmc1 = {
763 .devname = "s3c-sdhci.1",
764 .ctrlbit = S3C_CLKCON_SCLK_MMC1,
765 .enable = s3c64xx_sclk_ctrl,
767 .reg_src = { .reg = S3C_CLK_SRC, .shift = 20, .size = 2 },
768 .reg_div = { .reg = S3C_CLK_DIV1, .shift = 4, .size = 4 },
769 .sources = &clkset_spi_mmc,
772 static struct clksrc_clk clk_sclk_mmc2 = {
775 .devname = "s3c-sdhci.2",
776 .ctrlbit = S3C_CLKCON_SCLK_MMC2,
777 .enable = s3c64xx_sclk_ctrl,
779 .reg_src = { .reg = S3C_CLK_SRC, .shift = 22, .size = 2 },
780 .reg_div = { .reg = S3C_CLK_DIV1, .shift = 8, .size = 4 },
781 .sources = &clkset_spi_mmc,
784 static struct clksrc_clk clk_sclk_spi0 = {
787 .devname = "s3c6410-spi.0",
788 .ctrlbit = S3C_CLKCON_SCLK_SPI0,
789 .enable = s3c64xx_sclk_ctrl,
791 .reg_src = { .reg = S3C_CLK_SRC, .shift = 14, .size = 2 },
792 .reg_div = { .reg = S3C_CLK_DIV2, .shift = 0, .size = 4 },
793 .sources = &clkset_spi_mmc,
796 static struct clksrc_clk clk_sclk_spi1 = {
799 .devname = "s3c6410-spi.1",
800 .ctrlbit = S3C_CLKCON_SCLK_SPI1,
801 .enable = s3c64xx_sclk_ctrl,
803 .reg_src = { .reg = S3C_CLK_SRC, .shift = 16, .size = 2 },
804 .reg_div = { .reg = S3C_CLK_DIV2, .shift = 4, .size = 4 },
805 .sources = &clkset_spi_mmc,
808 /* Clock initialisation code */
810 static struct clksrc_clk *init_parents[] = {
816 static struct clksrc_clk *clksrc_cdev[] = {
825 static struct clk *clk_cdev[] = {
833 static struct clk_lookup s3c64xx_clk_lookup[] = {
834 CLKDEV_INIT(NULL, "clk_uart_baud2", &clk_p),
835 CLKDEV_INIT(NULL, "clk_uart_baud3", &clk_sclk_uclk.clk),
836 CLKDEV_INIT("s3c-sdhci.0", "mmc_busclk.0", &clk_hsmmc0),
837 CLKDEV_INIT("s3c-sdhci.1", "mmc_busclk.0", &clk_hsmmc1),
838 CLKDEV_INIT("s3c-sdhci.2", "mmc_busclk.0", &clk_hsmmc2),
839 CLKDEV_INIT("s3c-sdhci.0", "mmc_busclk.2", &clk_sclk_mmc0.clk),
840 CLKDEV_INIT("s3c-sdhci.1", "mmc_busclk.2", &clk_sclk_mmc1.clk),
841 CLKDEV_INIT("s3c-sdhci.2", "mmc_busclk.2", &clk_sclk_mmc2.clk),
842 CLKDEV_INIT(NULL, "spi_busclk0", &clk_p),
843 CLKDEV_INIT("s3c6410-spi.0", "spi_busclk1", &clk_sclk_spi0.clk),
844 CLKDEV_INIT("s3c6410-spi.0", "spi_busclk2", &clk_48m_spi0),
845 CLKDEV_INIT("s3c6410-spi.1", "spi_busclk1", &clk_sclk_spi1.clk),
846 CLKDEV_INIT("s3c6410-spi.1", "spi_busclk2", &clk_48m_spi1),
849 #define GET_DIV(clk, field) ((((clk) & field##_MASK) >> field##_SHIFT) + 1)
851 void __init_or_cpufreq s3c64xx_setup_clocks(void)
853 struct clk *xtal_clk;
865 printk(KERN_DEBUG "%s: registering clocks\n", __func__);
867 clkdiv0 = __raw_readl(S3C_CLK_DIV0);
868 printk(KERN_DEBUG "%s: clkdiv0 = %08x\n", __func__, clkdiv0);
870 xtal_clk = clk_get(NULL, "xtal");
871 BUG_ON(IS_ERR(xtal_clk));
873 xtal = clk_get_rate(xtal_clk);
876 printk(KERN_DEBUG "%s: xtal is %ld\n", __func__, xtal);
878 /* For now assume the mux always selects the crystal */
879 clk_ext_xtal_mux.parent = xtal_clk;
881 epll = s3c_get_pll6553x(xtal, __raw_readl(S3C_EPLL_CON0),
882 __raw_readl(S3C_EPLL_CON1));
883 mpll = s3c6400_get_pll(xtal, __raw_readl(S3C_MPLL_CON));
884 apll = s3c6400_get_pll(xtal, __raw_readl(S3C_APLL_CON));
888 printk(KERN_INFO "S3C64XX: PLL settings, A=%ld, M=%ld, E=%ld\n",
891 if(__raw_readl(S3C64XX_OTHERS) & S3C64XX_OTHERS_SYNCMUXSEL)
892 /* Synchronous mode */
893 hclk2 = apll / GET_DIV(clkdiv0, S3C6400_CLKDIV0_HCLK2);
895 /* Asynchronous mode */
896 hclk2 = mpll / GET_DIV(clkdiv0, S3C6400_CLKDIV0_HCLK2);
898 hclk = hclk2 / GET_DIV(clkdiv0, S3C6400_CLKDIV0_HCLK);
899 pclk = hclk2 / GET_DIV(clkdiv0, S3C6400_CLKDIV0_PCLK);
901 printk(KERN_INFO "S3C64XX: HCLK2=%ld, HCLK=%ld, PCLK=%ld\n",
904 clk_fout_mpll.rate = mpll;
905 clk_fout_epll.rate = epll;
906 clk_fout_apll.rate = apll;
913 for (ptr = 0; ptr < ARRAY_SIZE(init_parents); ptr++)
914 s3c_set_clksrc(init_parents[ptr], true);
916 for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++)
917 s3c_set_clksrc(&clksrcs[ptr], true);
920 static struct clk *clks1[] __initdata = {
932 static struct clk *clks[] __initdata = {
942 * s3c64xx_register_clocks - register clocks for s3c6400 and s3c6410
943 * @xtal: The rate for the clock crystal feeding the PLLs.
944 * @armclk_divlimit: Divisor mask for ARMCLK.
946 * Register the clocks for the S3C6400 and S3C6410 SoC range, such
947 * as ARMCLK as well as the necessary parent clocks.
949 * This call does not setup the clocks, which is left to the
950 * s3c64xx_setup_clocks() call which may be needed by the cpufreq
951 * or resume code to re-set the clocks if the bootloader has changed
954 void __init s3c64xx_register_clocks(unsigned long xtal,
955 unsigned armclk_divlimit)
959 armclk_mask = armclk_divlimit;
961 s3c24xx_register_baseclocks(xtal);
962 s3c24xx_register_clocks(clks, ARRAY_SIZE(clks));
964 s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks));
966 s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
967 s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
969 s3c24xx_register_clocks(clk_cdev, ARRAY_SIZE(clk_cdev));
970 for (cnt = 0; cnt < ARRAY_SIZE(clk_cdev); cnt++)
971 s3c_disable_clocks(clk_cdev[cnt], 1);
973 s3c24xx_register_clocks(clks1, ARRAY_SIZE(clks1));
974 s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
975 for (cnt = 0; cnt < ARRAY_SIZE(clksrc_cdev); cnt++)
976 s3c_register_clksrc(clksrc_cdev[cnt], 1);
977 clkdev_add_table(s3c64xx_clk_lookup, ARRAY_SIZE(s3c64xx_clk_lookup));