3 * Clock initialization for OMAP4
6 * Texas Instruments, <www.ti.com>
8 * Aneesh V <aneesh@ti.com>
10 * Based on previous work by:
11 * Santosh Shilimkar <santosh.shilimkar@ti.com>
12 * Rajendra Nayak <rnayak@ti.com>
14 * SPDX-License-Identifier: GPL-2.0+
18 #include <asm/omap_common.h>
20 #include <asm/arch/clock.h>
21 #include <asm/arch/sys_proto.h>
22 #include <asm/utils.h>
23 #include <asm/omap_gpio.h>
26 #ifndef CONFIG_SPL_BUILD
28 * printing to console doesn't work unless
29 * this code is executed from SPL
31 #define printf(fmt, args...)
35 const u32 sys_clk_array[8] = {
36 12000000, /* 12 MHz */
37 20000000, /* 20 MHz */
38 16800000, /* 16.8 MHz */
39 19200000, /* 19.2 MHz */
40 26000000, /* 26 MHz */
41 27000000, /* 27 MHz */
42 38400000, /* 38.4 MHz */
45 static inline u32 __get_sys_clk_index(void)
49 * For ES1 the ROM code calibration of sys clock is not reliable
50 * due to hw issue. So, use hard-coded value. If this value is not
51 * correct for any board over-ride this function in board file
52 * From ES2.0 onwards you will get this information from
55 if (omap_revision() == OMAP4430_ES1_0)
56 ind = OMAP_SYS_CLK_IND_38_4_MHZ;
58 /* SYS_CLKSEL - 1 to match the dpll param array indices */
59 ind = (readl((*prcm)->cm_sys_clksel) &
60 CM_SYS_CLKSEL_SYS_CLKSEL_MASK) - 1;
65 u32 get_sys_clk_index(void)
66 __attribute__ ((weak, alias("__get_sys_clk_index")));
68 u32 get_sys_clk_freq(void)
70 u8 index = get_sys_clk_index();
71 return sys_clk_array[index];
74 void setup_post_dividers(u32 const base, const struct dpll_params *params)
76 struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
78 /* Setup post-dividers */
80 writel(params->m2, &dpll_regs->cm_div_m2_dpll);
82 writel(params->m3, &dpll_regs->cm_div_m3_dpll);
83 if (params->m4_h11 >= 0)
84 writel(params->m4_h11, &dpll_regs->cm_div_m4_h11_dpll);
85 if (params->m5_h12 >= 0)
86 writel(params->m5_h12, &dpll_regs->cm_div_m5_h12_dpll);
87 if (params->m6_h13 >= 0)
88 writel(params->m6_h13, &dpll_regs->cm_div_m6_h13_dpll);
89 if (params->m7_h14 >= 0)
90 writel(params->m7_h14, &dpll_regs->cm_div_m7_h14_dpll);
92 writel(params->h21, &dpll_regs->cm_div_h21_dpll);
94 writel(params->h22, &dpll_regs->cm_div_h22_dpll);
96 writel(params->h23, &dpll_regs->cm_div_h23_dpll);
98 writel(params->h24, &dpll_regs->cm_div_h24_dpll);
101 static inline void do_bypass_dpll(u32 const base)
103 struct dpll_regs *dpll_regs = (struct dpll_regs *)base;
105 clrsetbits_le32(&dpll_regs->cm_clkmode_dpll,
106 CM_CLKMODE_DPLL_DPLL_EN_MASK,
107 DPLL_EN_FAST_RELOCK_BYPASS <<
108 CM_CLKMODE_DPLL_EN_SHIFT);
111 static inline void wait_for_bypass(u32 const base)
113 struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
115 if (!wait_on_value(ST_DPLL_CLK_MASK, 0, &dpll_regs->cm_idlest_dpll,
117 printf("Bypassing DPLL failed %x\n", base);
121 static inline void do_lock_dpll(u32 const base)
123 struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
125 clrsetbits_le32(&dpll_regs->cm_clkmode_dpll,
126 CM_CLKMODE_DPLL_DPLL_EN_MASK,
127 DPLL_EN_LOCK << CM_CLKMODE_DPLL_EN_SHIFT);
130 static inline void wait_for_lock(u32 const base)
132 struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
134 if (!wait_on_value(ST_DPLL_CLK_MASK, ST_DPLL_CLK_MASK,
135 &dpll_regs->cm_idlest_dpll, LDELAY)) {
136 printf("DPLL locking failed for %x\n", base);
141 inline u32 check_for_lock(u32 const base)
143 struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
144 u32 lock = readl(&dpll_regs->cm_idlest_dpll) & ST_DPLL_CLK_MASK;
149 const struct dpll_params *get_mpu_dpll_params(struct dplls const *dpll_data)
151 u32 sysclk_ind = get_sys_clk_index();
152 return &dpll_data->mpu[sysclk_ind];
155 const struct dpll_params *get_core_dpll_params(struct dplls const *dpll_data)
157 u32 sysclk_ind = get_sys_clk_index();
158 return &dpll_data->core[sysclk_ind];
161 const struct dpll_params *get_per_dpll_params(struct dplls const *dpll_data)
163 u32 sysclk_ind = get_sys_clk_index();
164 return &dpll_data->per[sysclk_ind];
167 const struct dpll_params *get_iva_dpll_params(struct dplls const *dpll_data)
169 u32 sysclk_ind = get_sys_clk_index();
170 return &dpll_data->iva[sysclk_ind];
173 const struct dpll_params *get_usb_dpll_params(struct dplls const *dpll_data)
175 u32 sysclk_ind = get_sys_clk_index();
176 return &dpll_data->usb[sysclk_ind];
179 const struct dpll_params *get_abe_dpll_params(struct dplls const *dpll_data)
181 #ifdef CONFIG_SYS_OMAP_ABE_SYSCK
182 u32 sysclk_ind = get_sys_clk_index();
183 return &dpll_data->abe[sysclk_ind];
185 return dpll_data->abe;
189 static const struct dpll_params *get_ddr_dpll_params
190 (struct dplls const *dpll_data)
192 u32 sysclk_ind = get_sys_clk_index();
196 return &dpll_data->ddr[sysclk_ind];
199 #ifdef CONFIG_DRIVER_TI_CPSW
200 static const struct dpll_params *get_gmac_dpll_params
201 (struct dplls const *dpll_data)
203 u32 sysclk_ind = get_sys_clk_index();
205 if (!dpll_data->gmac)
207 return &dpll_data->gmac[sysclk_ind];
211 static void do_setup_dpll(u32 const base, const struct dpll_params *params,
215 struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
220 temp = readl(&dpll_regs->cm_clksel_dpll);
222 if (check_for_lock(base)) {
224 * The Dpll has already been locked by rom code using CH.
225 * Check if M,N are matching with Ideal nominal opp values.
226 * If matches, skip the rest otherwise relock.
228 M = (temp & CM_CLKSEL_DPLL_M_MASK) >> CM_CLKSEL_DPLL_M_SHIFT;
229 N = (temp & CM_CLKSEL_DPLL_N_MASK) >> CM_CLKSEL_DPLL_N_SHIFT;
230 if ((M != (params->m)) || (N != (params->n))) {
231 debug("\n %s Dpll locked, but not for ideal M = %d,"
232 "N = %d values, current values are M = %d,"
233 "N= %d" , dpll, params->m, params->n,
236 /* Dpll locked with ideal values for nominal opps. */
237 debug("\n %s Dpll already locked with ideal"
238 "nominal opp values", dpll);
239 goto setup_post_dividers;
246 temp &= ~CM_CLKSEL_DPLL_M_MASK;
247 temp |= (params->m << CM_CLKSEL_DPLL_M_SHIFT) & CM_CLKSEL_DPLL_M_MASK;
249 temp &= ~CM_CLKSEL_DPLL_N_MASK;
250 temp |= (params->n << CM_CLKSEL_DPLL_N_SHIFT) & CM_CLKSEL_DPLL_N_MASK;
252 writel(temp, &dpll_regs->cm_clksel_dpll);
259 setup_post_dividers(base, params);
261 /* Wait till the DPLL locks */
266 u32 omap_ddr_clk(void)
268 u32 ddr_clk, sys_clk_khz, omap_rev, divider;
269 const struct dpll_params *core_dpll_params;
271 omap_rev = omap_revision();
272 sys_clk_khz = get_sys_clk_freq() / 1000;
274 core_dpll_params = get_core_dpll_params(*dplls_data);
276 debug("sys_clk %d\n ", sys_clk_khz * 1000);
278 /* Find Core DPLL locked frequency first */
279 ddr_clk = sys_clk_khz * 2 * core_dpll_params->m /
280 (core_dpll_params->n + 1);
282 if (omap_rev < OMAP5430_ES1_0) {
284 * DDR frequency is PHY_ROOT_CLK/2
285 * PHY_ROOT_CLK = Fdpll/2/M2
290 * DDR frequency is PHY_ROOT_CLK
291 * PHY_ROOT_CLK = Fdpll/2/M2
296 ddr_clk = ddr_clk / divider / core_dpll_params->m2;
297 ddr_clk *= 1000; /* convert to Hz */
298 debug("ddr_clk %d\n ", ddr_clk);
306 * Resulting MPU frequencies:
307 * 4430 ES1.0 : 600 MHz
308 * 4430 ES2.x : 792 MHz (OPP Turbo)
309 * 4460 : 920 MHz (OPP Turbo) - DCC disabled
311 void configure_mpu_dpll(void)
313 const struct dpll_params *params;
314 struct dpll_regs *mpu_dpll_regs;
316 omap_rev = omap_revision();
319 * DCC and clock divider settings for 4460.
320 * DCC is required, if more than a certain frequency is required.
324 if ((omap_rev >= OMAP4460_ES1_0) && (omap_rev < OMAP5430_ES1_0)) {
326 (struct dpll_regs *)((*prcm)->cm_clkmode_dpll_mpu);
327 bypass_dpll((*prcm)->cm_clkmode_dpll_mpu);
328 clrbits_le32((*prcm)->cm_mpu_mpu_clkctrl,
329 MPU_CLKCTRL_CLKSEL_EMIF_DIV_MODE_MASK);
330 setbits_le32((*prcm)->cm_mpu_mpu_clkctrl,
331 MPU_CLKCTRL_CLKSEL_ABE_DIV_MODE_MASK);
332 clrbits_le32(&mpu_dpll_regs->cm_clksel_dpll,
333 CM_CLKSEL_DCC_EN_MASK);
336 params = get_mpu_dpll_params(*dplls_data);
338 do_setup_dpll((*prcm)->cm_clkmode_dpll_mpu, params, DPLL_LOCK, "mpu");
339 debug("MPU DPLL locked\n");
342 #if defined(CONFIG_USB_EHCI_OMAP) || defined(CONFIG_USB_XHCI_OMAP) || \
343 defined(CONFIG_USB_MUSB_OMAP2PLUS)
344 static void setup_usb_dpll(void)
346 const struct dpll_params *params;
347 u32 sys_clk_khz, sd_div, num, den;
349 sys_clk_khz = get_sys_clk_freq() / 1000;
352 * USB dpll is J-type. Need to set DPLL_SD_DIV for jitter correction
353 * DPLL_SD_DIV = CEILING ([DPLL_MULT/(DPLL_DIV+1)]* CLKINP / 250)
354 * - where CLKINP is sys_clk in MHz
355 * Use CLKINP in KHz and adjust the denominator accordingly so
356 * that we have enough accuracy and at the same time no overflow
358 params = get_usb_dpll_params(*dplls_data);
359 num = params->m * sys_clk_khz;
360 den = (params->n + 1) * 250 * 1000;
363 clrsetbits_le32((*prcm)->cm_clksel_dpll_usb,
364 CM_CLKSEL_DPLL_DPLL_SD_DIV_MASK,
365 sd_div << CM_CLKSEL_DPLL_DPLL_SD_DIV_SHIFT);
367 /* Now setup the dpll with the regular function */
368 do_setup_dpll((*prcm)->cm_clkmode_dpll_usb, params, DPLL_LOCK, "usb");
372 static void setup_dplls(void)
375 const struct dpll_params *params;
376 struct emif_reg_struct *emif = (struct emif_reg_struct *)EMIF1_BASE;
378 debug("setup_dplls\n");
381 params = get_core_dpll_params(*dplls_data); /* default - safest */
383 * Do not lock the core DPLL now. Just set it up.
384 * Core DPLL will be locked after setting up EMIF
385 * using the FREQ_UPDATE method(freq_update_core())
387 if (emif_sdram_type(readl(&emif->emif_sdram_config)) ==
388 EMIF_SDRAM_TYPE_LPDDR2)
389 do_setup_dpll((*prcm)->cm_clkmode_dpll_core, params,
390 DPLL_NO_LOCK, "core");
392 do_setup_dpll((*prcm)->cm_clkmode_dpll_core, params,
394 /* Set the ratios for CORE_CLK, L3_CLK, L4_CLK */
395 temp = (CLKSEL_CORE_X2_DIV_1 << CLKSEL_CORE_SHIFT) |
396 (CLKSEL_L3_CORE_DIV_2 << CLKSEL_L3_SHIFT) |
397 (CLKSEL_L4_L3_DIV_2 << CLKSEL_L4_SHIFT);
398 writel(temp, (*prcm)->cm_clksel_core);
399 debug("Core DPLL configured\n");
402 params = get_per_dpll_params(*dplls_data);
403 do_setup_dpll((*prcm)->cm_clkmode_dpll_per,
404 params, DPLL_LOCK, "per");
405 debug("PER DPLL locked\n");
408 configure_mpu_dpll();
410 #if defined(CONFIG_USB_EHCI_OMAP) || defined(CONFIG_USB_XHCI_OMAP) || \
411 defined(CONFIG_USB_MUSB_OMAP2PLUS)
414 params = get_ddr_dpll_params(*dplls_data);
415 do_setup_dpll((*prcm)->cm_clkmode_dpll_ddrphy,
416 params, DPLL_LOCK, "ddr");
418 #ifdef CONFIG_DRIVER_TI_CPSW
419 params = get_gmac_dpll_params(*dplls_data);
420 do_setup_dpll((*prcm)->cm_clkmode_dpll_gmac, params,
425 u32 get_offset_code(u32 volt_offset, struct pmic_data *pmic)
429 volt_offset -= pmic->base_offset;
431 offset_code = (volt_offset + pmic->step - 1) / pmic->step;
434 * Offset codes 1-6 all give the base voltage in Palmas
435 * Offset code 0 switches OFF the SMPS
437 return offset_code + pmic->start_code;
440 void do_scale_vcore(u32 vcore_reg, u32 volt_mv, struct pmic_data *pmic)
443 u32 offset = volt_mv;
444 #ifndef CONFIG_DRA7XX
451 pmic->pmic_bus_init();
452 #ifndef CONFIG_DRA7XX
453 /* See if we can first get the GPIO if needed */
455 ret = gpio_request(pmic->gpio, "PMIC_GPIO");
458 printf("%s: gpio %d request failed %d\n", __func__,
463 /* Pull the GPIO low to select SET0 register, while we program SET1 */
465 gpio_direction_output(pmic->gpio, 0);
467 /* convert to uV for better accuracy in the calculations */
470 offset_code = get_offset_code(offset, pmic);
472 debug("do_scale_vcore: volt - %d offset_code - 0x%x\n", volt_mv,
475 if (pmic->pmic_write(pmic->i2c_slave_addr, vcore_reg, offset_code))
476 printf("Scaling voltage failed for 0x%x\n", vcore_reg);
477 #ifndef CONFIG_DRA7XX
479 gpio_direction_output(pmic->gpio, 1);
483 static u32 optimize_vcore_voltage(struct volts const *v)
491 switch (v->efuse.reg_bits) {
493 val = readw(v->efuse.reg);
496 val = readl(v->efuse.reg);
499 printf("Error: efuse 0x%08x bits=%d unknown\n",
500 v->efuse.reg, v->efuse.reg_bits);
505 printf("Error: efuse 0x%08x bits=%d val=0, using %d\n",
506 v->efuse.reg, v->efuse.reg_bits, v->value);
510 debug("%s:efuse 0x%08x bits=%d Vnom=%d, using efuse value %d\n",
511 __func__, v->efuse.reg, v->efuse.reg_bits, v->value, val);
515 #ifdef CONFIG_IODELAY_RECALIBRATION
516 void __weak recalibrate_iodelay(void)
522 * Setup the voltages for the main SoC core power domains.
523 * We start with the maximum voltages allowed here, as set in the corresponding
524 * vcores_data struct, and then scale (usually down) to the fused values that
525 * are retrieved from the SoC. The scaling happens only if the efuse.reg fields
527 * Rail grouping is supported for the DRA7xx SoCs only, therefore the code is
528 * compiled conditionally. Note that the new code writes the scaled (or zeroed)
529 * values back to the vcores_data struct for eventual reuse. Zero values mean
530 * that the corresponding rails are not controlled separately, and are not sent
533 void scale_vcores(struct vcores_data const *vcores)
535 #if defined(CONFIG_DRA7XX)
537 struct volts *pv = (struct volts *)vcores;
540 for (i=0; i<(sizeof(struct vcores_data)/sizeof(struct volts)); i++) {
541 debug("%d -> ", pv->value);
543 /* Handle non-empty members only */
544 pv->value = optimize_vcore_voltage(pv);
545 px = (struct volts *)vcores;
548 * Scan already handled non-empty members to see
549 * if we have a group and find the max voltage,
550 * which is set to the first occurance of the
551 * particular SMPS; the other group voltages are
555 if ((pv->pmic->i2c_slave_addr ==
556 px->pmic->i2c_slave_addr) &&
557 (pv->addr == px->addr)) {
558 /* Same PMIC, same SMPS */
559 if (pv->value > px->value)
560 px->value = pv->value;
568 debug("%d\n", pv->value);
572 debug("cor: %d\n", vcores->core.value);
573 do_scale_vcore(vcores->core.addr, vcores->core.value, vcores->core.pmic);
575 * IO delay recalibration should be done immediately after
576 * adjusting AVS voltages for VDD_CORE_L.
577 * Respective boards should call __recalibrate_iodelay()
578 * with proper mux, virtual and manual mode configurations.
580 #ifdef CONFIG_IODELAY_RECALIBRATION
581 recalibrate_iodelay();
584 debug("mpu: %d\n", vcores->mpu.value);
585 do_scale_vcore(vcores->mpu.addr, vcores->mpu.value, vcores->mpu.pmic);
586 /* Configure MPU ABB LDO after scale */
587 abb_setup(vcores->mpu.efuse.reg,
588 (*ctrl)->control_wkup_ldovbb_mpu_voltage_ctrl,
589 (*prcm)->prm_abbldo_mpu_setup,
590 (*prcm)->prm_abbldo_mpu_ctrl,
591 (*prcm)->prm_irqstatus_mpu_2,
592 vcores->mpu.abb_tx_done_mask,
595 /* The .mm member is not used for the DRA7xx */
597 debug("gpu: %d\n", vcores->gpu.value);
598 do_scale_vcore(vcores->gpu.addr, vcores->gpu.value, vcores->gpu.pmic);
599 debug("eve: %d\n", vcores->eve.value);
600 do_scale_vcore(vcores->eve.addr, vcores->eve.value, vcores->eve.pmic);
601 debug("iva: %d\n", vcores->iva.value);
602 do_scale_vcore(vcores->iva.addr, vcores->iva.value, vcores->iva.pmic);
603 /* Might need udelay(1000) here if debug is enabled to see all prints */
607 val = optimize_vcore_voltage(&vcores->core);
608 do_scale_vcore(vcores->core.addr, val, vcores->core.pmic);
611 * IO delay recalibration should be done immediately after
612 * adjusting AVS voltages for VDD_CORE_L.
613 * Respective boards should call __recalibrate_iodelay()
614 * with proper mux, virtual and manual mode configurations.
616 #ifdef CONFIG_IODELAY_RECALIBRATION
617 recalibrate_iodelay();
620 val = optimize_vcore_voltage(&vcores->mpu);
621 do_scale_vcore(vcores->mpu.addr, val, vcores->mpu.pmic);
623 /* Configure MPU ABB LDO after scale */
624 abb_setup(vcores->mpu.efuse.reg,
625 (*ctrl)->control_wkup_ldovbb_mpu_voltage_ctrl,
626 (*prcm)->prm_abbldo_mpu_setup,
627 (*prcm)->prm_abbldo_mpu_ctrl,
628 (*prcm)->prm_irqstatus_mpu_2,
629 vcores->mpu.abb_tx_done_mask,
632 val = optimize_vcore_voltage(&vcores->mm);
633 do_scale_vcore(vcores->mm.addr, val, vcores->mm.pmic);
635 /* Configure MM ABB LDO after scale */
636 abb_setup(vcores->mm.efuse.reg,
637 (*ctrl)->control_wkup_ldovbb_mm_voltage_ctrl,
638 (*prcm)->prm_abbldo_mm_setup,
639 (*prcm)->prm_abbldo_mm_ctrl,
640 (*prcm)->prm_irqstatus_mpu,
641 vcores->mm.abb_tx_done_mask,
644 val = optimize_vcore_voltage(&vcores->gpu);
645 do_scale_vcore(vcores->gpu.addr, val, vcores->gpu.pmic);
647 val = optimize_vcore_voltage(&vcores->eve);
648 do_scale_vcore(vcores->eve.addr, val, vcores->eve.pmic);
650 val = optimize_vcore_voltage(&vcores->iva);
651 do_scale_vcore(vcores->iva.addr, val, vcores->iva.pmic);
655 static inline void enable_clock_domain(u32 const clkctrl_reg, u32 enable_mode)
657 clrsetbits_le32(clkctrl_reg, CD_CLKCTRL_CLKTRCTRL_MASK,
658 enable_mode << CD_CLKCTRL_CLKTRCTRL_SHIFT);
659 debug("Enable clock domain - %x\n", clkctrl_reg);
662 static inline void disable_clock_domain(u32 const clkctrl_reg)
664 clrsetbits_le32(clkctrl_reg, CD_CLKCTRL_CLKTRCTRL_MASK,
665 CD_CLKCTRL_CLKTRCTRL_SW_SLEEP <<
666 CD_CLKCTRL_CLKTRCTRL_SHIFT);
667 debug("Disable clock domain - %x\n", clkctrl_reg);
670 static inline void wait_for_clk_enable(u32 clkctrl_addr)
672 u32 clkctrl, idlest = MODULE_CLKCTRL_IDLEST_DISABLED;
675 while ((idlest == MODULE_CLKCTRL_IDLEST_DISABLED) ||
676 (idlest == MODULE_CLKCTRL_IDLEST_TRANSITIONING)) {
678 clkctrl = readl(clkctrl_addr);
679 idlest = (clkctrl & MODULE_CLKCTRL_IDLEST_MASK) >>
680 MODULE_CLKCTRL_IDLEST_SHIFT;
682 printf("Clock enable failed for 0x%x idlest 0x%x\n",
683 clkctrl_addr, clkctrl);
689 static inline void enable_clock_module(u32 const clkctrl_addr, u32 enable_mode,
692 clrsetbits_le32(clkctrl_addr, MODULE_CLKCTRL_MODULEMODE_MASK,
693 enable_mode << MODULE_CLKCTRL_MODULEMODE_SHIFT);
694 debug("Enable clock module - %x\n", clkctrl_addr);
696 wait_for_clk_enable(clkctrl_addr);
699 static inline void wait_for_clk_disable(u32 clkctrl_addr)
701 u32 clkctrl, idlest = MODULE_CLKCTRL_IDLEST_FULLY_FUNCTIONAL;
704 while ((idlest != MODULE_CLKCTRL_IDLEST_DISABLED)) {
705 clkctrl = readl(clkctrl_addr);
706 idlest = (clkctrl & MODULE_CLKCTRL_IDLEST_MASK) >>
707 MODULE_CLKCTRL_IDLEST_SHIFT;
709 printf("Clock disable failed for 0x%x idlest 0x%x\n",
710 clkctrl_addr, clkctrl);
716 static inline void disable_clock_module(u32 const clkctrl_addr,
717 u32 wait_for_disable)
719 clrsetbits_le32(clkctrl_addr, MODULE_CLKCTRL_MODULEMODE_MASK,
720 MODULE_CLKCTRL_MODULEMODE_SW_DISABLE <<
721 MODULE_CLKCTRL_MODULEMODE_SHIFT);
722 debug("Disable clock module - %x\n", clkctrl_addr);
723 if (wait_for_disable)
724 wait_for_clk_disable(clkctrl_addr);
727 void freq_update_core(void)
729 u32 freq_config1 = 0;
730 const struct dpll_params *core_dpll_params;
731 u32 omap_rev = omap_revision();
733 core_dpll_params = get_core_dpll_params(*dplls_data);
734 /* Put EMIF clock domain in sw wakeup mode */
735 enable_clock_domain((*prcm)->cm_memif_clkstctrl,
736 CD_CLKCTRL_CLKTRCTRL_SW_WKUP);
737 wait_for_clk_enable((*prcm)->cm_memif_emif_1_clkctrl);
738 wait_for_clk_enable((*prcm)->cm_memif_emif_2_clkctrl);
740 freq_config1 = SHADOW_FREQ_CONFIG1_FREQ_UPDATE_MASK |
741 SHADOW_FREQ_CONFIG1_DLL_RESET_MASK;
743 freq_config1 |= (DPLL_EN_LOCK << SHADOW_FREQ_CONFIG1_DPLL_EN_SHIFT) &
744 SHADOW_FREQ_CONFIG1_DPLL_EN_MASK;
746 freq_config1 |= (core_dpll_params->m2 <<
747 SHADOW_FREQ_CONFIG1_M2_DIV_SHIFT) &
748 SHADOW_FREQ_CONFIG1_M2_DIV_MASK;
750 writel(freq_config1, (*prcm)->cm_shadow_freq_config1);
751 if (!wait_on_value(SHADOW_FREQ_CONFIG1_FREQ_UPDATE_MASK, 0,
752 (u32 *) (*prcm)->cm_shadow_freq_config1, LDELAY)) {
753 puts("FREQ UPDATE procedure failed!!");
758 * Putting EMIF in HW_AUTO is seen to be causing issues with
759 * EMIF clocks and the master DLL. Keep EMIF in SW_WKUP
760 * in OMAP5430 ES1.0 silicon
762 if (omap_rev != OMAP5430_ES1_0) {
763 /* Put EMIF clock domain back in hw auto mode */
764 enable_clock_domain((*prcm)->cm_memif_clkstctrl,
765 CD_CLKCTRL_CLKTRCTRL_HW_AUTO);
766 wait_for_clk_enable((*prcm)->cm_memif_emif_1_clkctrl);
767 wait_for_clk_enable((*prcm)->cm_memif_emif_2_clkctrl);
771 void bypass_dpll(u32 const base)
773 do_bypass_dpll(base);
774 wait_for_bypass(base);
777 void lock_dpll(u32 const base)
783 static void setup_clocks_for_console(void)
785 /* Do not add any spl_debug prints in this function */
786 clrsetbits_le32((*prcm)->cm_l4per_clkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK,
787 CD_CLKCTRL_CLKTRCTRL_SW_WKUP <<
788 CD_CLKCTRL_CLKTRCTRL_SHIFT);
790 /* Enable all UARTs - console will be on one of them */
791 clrsetbits_le32((*prcm)->cm_l4per_uart1_clkctrl,
792 MODULE_CLKCTRL_MODULEMODE_MASK,
793 MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
794 MODULE_CLKCTRL_MODULEMODE_SHIFT);
796 clrsetbits_le32((*prcm)->cm_l4per_uart2_clkctrl,
797 MODULE_CLKCTRL_MODULEMODE_MASK,
798 MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
799 MODULE_CLKCTRL_MODULEMODE_SHIFT);
801 clrsetbits_le32((*prcm)->cm_l4per_uart3_clkctrl,
802 MODULE_CLKCTRL_MODULEMODE_MASK,
803 MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
804 MODULE_CLKCTRL_MODULEMODE_SHIFT);
806 clrsetbits_le32((*prcm)->cm_l4per_uart4_clkctrl,
807 MODULE_CLKCTRL_MODULEMODE_MASK,
808 MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
809 MODULE_CLKCTRL_MODULEMODE_SHIFT);
811 clrsetbits_le32((*prcm)->cm_l4per_clkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK,
812 CD_CLKCTRL_CLKTRCTRL_HW_AUTO <<
813 CD_CLKCTRL_CLKTRCTRL_SHIFT);
816 void do_enable_clocks(u32 const *clk_domains,
817 u32 const *clk_modules_hw_auto,
818 u32 const *clk_modules_explicit_en,
823 /* Put the clock domains in SW_WKUP mode */
824 for (i = 0; (i < max) && clk_domains[i]; i++) {
825 enable_clock_domain(clk_domains[i],
826 CD_CLKCTRL_CLKTRCTRL_SW_WKUP);
829 /* Clock modules that need to be put in HW_AUTO */
830 for (i = 0; (i < max) && clk_modules_hw_auto[i]; i++) {
831 enable_clock_module(clk_modules_hw_auto[i],
832 MODULE_CLKCTRL_MODULEMODE_HW_AUTO,
836 /* Clock modules that need to be put in SW_EXPLICIT_EN mode */
837 for (i = 0; (i < max) && clk_modules_explicit_en[i]; i++) {
838 enable_clock_module(clk_modules_explicit_en[i],
839 MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN,
843 /* Put the clock domains in HW_AUTO mode now */
844 for (i = 0; (i < max) && clk_domains[i]; i++) {
845 enable_clock_domain(clk_domains[i],
846 CD_CLKCTRL_CLKTRCTRL_HW_AUTO);
850 void do_disable_clocks(u32 const *clk_domains,
851 u32 const *clk_modules_disable,
857 /* Clock modules that need to be put in SW_DISABLE */
858 for (i = 0; (i < max) && clk_modules_disable[i]; i++)
859 disable_clock_module(clk_modules_disable[i],
862 /* Put the clock domains in SW_SLEEP mode */
863 for (i = 0; (i < max) && clk_domains[i]; i++)
864 disable_clock_domain(clk_domains[i]);
868 * setup_early_clocks() - Setup early clocks needed for SoC
870 * Setup clocks for console, SPL basic initialization clocks and initialize
871 * the timer. This is invoked prior prcm_init.
873 void setup_early_clocks(void)
875 switch (omap_hw_init_context()) {
876 case OMAP_INIT_CONTEXT_SPL:
877 case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR:
878 case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH:
879 setup_clocks_for_console();
880 enable_basic_clocks();
888 switch (omap_hw_init_context()) {
889 case OMAP_INIT_CONTEXT_SPL:
890 case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR:
891 case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH:
892 scale_vcores(*omap_vcores);
894 setup_warmreset_time();
900 if (OMAP_INIT_CONTEXT_SPL != omap_hw_init_context())
901 enable_basic_uboot_clocks();
904 void gpi2c_init(void)
906 static int gpi2c = 1;
909 i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED,
910 CONFIG_SYS_OMAP24_I2C_SLAVE);