2 * (C) Copyright 2000-2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * Copyright (C) 2004-2006 Freescale Semiconductor, Inc.
7 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 * 20050101: Eran Liberty (liberty@freescale.com)
28 * Initial file creating (porting from 85XX & 8260)
33 #include <asm/processor.h>
35 DECLARE_GLOBAL_DATA_PTR;
37 /* ----------------------------------------------------------------- */
55 mult_t core_csb_ratio;
59 corecnf_t corecnf_tab[] = {
60 { _byp, _byp}, /* 0x00 */
61 { _byp, _byp}, /* 0x01 */
62 { _byp, _byp}, /* 0x02 */
63 { _byp, _byp}, /* 0x03 */
64 { _byp, _byp}, /* 0x04 */
65 { _byp, _byp}, /* 0x05 */
66 { _byp, _byp}, /* 0x06 */
67 { _byp, _byp}, /* 0x07 */
68 { _1x, _x2}, /* 0x08 */
69 { _1x, _x4}, /* 0x09 */
70 { _1x, _x8}, /* 0x0A */
71 { _1x, _x8}, /* 0x0B */
72 {_1_5x, _x2}, /* 0x0C */
73 {_1_5x, _x4}, /* 0x0D */
74 {_1_5x, _x8}, /* 0x0E */
75 {_1_5x, _x8}, /* 0x0F */
76 { _2x, _x2}, /* 0x10 */
77 { _2x, _x4}, /* 0x11 */
78 { _2x, _x8}, /* 0x12 */
79 { _2x, _x8}, /* 0x13 */
80 {_2_5x, _x2}, /* 0x14 */
81 {_2_5x, _x4}, /* 0x15 */
82 {_2_5x, _x8}, /* 0x16 */
83 {_2_5x, _x8}, /* 0x17 */
84 { _3x, _x2}, /* 0x18 */
85 { _3x, _x4}, /* 0x19 */
86 { _3x, _x8}, /* 0x1A */
87 { _3x, _x8}, /* 0x1B */
90 /* ----------------------------------------------------------------- */
97 volatile immap_t *im = (immap_t *)CFG_IMMRBAR;
102 u32 corecnf_tab_index;
107 #if defined(CONFIG_MPC8349)
120 #if defined (CONFIG_MPC8360)
128 if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im)
131 clkin_div = ((im->clk.spmr & SPMR_CKID) >> SPMR_CKID_SHIFT);
133 if (im->reset.rcwh & HRCWH_PCI_HOST) {
134 #if defined(CONFIG_83XX_CLKIN)
135 pci_sync_in = CONFIG_83XX_CLKIN / (1 + clkin_div);
137 pci_sync_in = 0xDEADBEEF;
140 #if defined(CONFIG_83XX_PCICLK)
141 pci_sync_in = CONFIG_83XX_PCICLK;
143 pci_sync_in = 0xDEADBEEF;
147 spmf = ((im->reset.rcwl & RCWL_SPMF) >> RCWL_SPMF_SHIFT);
148 csb_clk = pci_sync_in * (1 + clkin_div) * spmf;
152 #if defined(CONFIG_MPC8349)
153 switch ((sccr & SCCR_TSEC1CM) >> SCCR_TSEC1CM_SHIFT) {
161 tsec1_clk = csb_clk / 2;
164 tsec1_clk = csb_clk / 3;
167 /* unkown SCCR_TSEC1CM value */
171 switch ((sccr & SCCR_TSEC2CM) >> SCCR_TSEC2CM_SHIFT) {
179 tsec2_clk = csb_clk / 2;
182 tsec2_clk = csb_clk / 3;
185 /* unkown SCCR_TSEC2CM value */
189 i2c1_clk = tsec2_clk;
191 switch ((sccr & SCCR_USBMPHCM) >> SCCR_USBMPHCM_SHIFT) {
196 usbmph_clk = csb_clk;
199 usbmph_clk = csb_clk / 2;
202 usbmph_clk = csb_clk / 3;
205 /* unkown SCCR_USBMPHCM value */
209 switch ((sccr & SCCR_USBDRCM) >> SCCR_USBDRCM_SHIFT) {
217 usbdr_clk = csb_clk / 2;
220 usbdr_clk = csb_clk / 3;
223 /* unkown SCCR_USBDRCM value */
229 && usbmph_clk != usbdr_clk ) {
230 /* if USB MPH clock is not disabled and USB DR clock is not disabled than USB MPH & USB DR must have the same rate */
234 #if defined (CONFIG_MPC8360)
237 i2c2_clk = csb_clk; /* i2c-2 clk is equal to csb clk */
239 switch ((sccr & SCCR_ENCCM) >> SCCR_ENCCM_SHIFT) {
247 enc_clk = csb_clk / 2;
250 enc_clk = csb_clk / 3;
253 /* unkown SCCR_ENCCM value */
256 #if defined(CONFIG_MPC8349) || defined(CONFIG_MPC8360)
257 lbiu_clk = csb_clk * (1 + ((im->reset.rcwl & RCWL_LBIUCM) >> RCWL_LBIUCM_SHIFT));
259 #error Unknown MPC83xx chip
261 lcrr = (im->lbus.lcrr & LCRR_CLKDIV) >> LCRR_CLKDIV_SHIFT;
266 lclk_clk = lbiu_clk / lcrr;
272 #if defined(CONFIG_MPC8349) || defined(CONFIG_MPC8360)
273 ddr_clk = csb_clk * (1 + ((im->reset.rcwl & RCWL_DDRCM) >> RCWL_DDRCM_SHIFT));
274 corepll = (im->reset.rcwl & RCWL_COREPLL) >> RCWL_COREPLL_SHIFT;
275 #if defined (CONFIG_MPC8360)
276 ddr_sec_clk = csb_clk * (1 + ((im->reset.rcwl & RCWL_LBIUCM) >> RCWL_LBIUCM_SHIFT));
279 #error Unknown MPC83xx chip
282 corecnf_tab_index = ((corepll & 0x1F) << 2) | ((corepll & 0x60) >> 5);
283 if (corecnf_tab_index > (sizeof(corecnf_tab)/sizeof(corecnf_t)) ) {
284 /* corecnf_tab_index is too high, possibly worng value */
287 switch (corecnf_tab[corecnf_tab_index].core_csb_ratio) {
294 core_clk = (3 * csb_clk) / 2;
297 core_clk = 2 * csb_clk;
300 core_clk = ( 5 * csb_clk) / 2;
303 core_clk = 3 * csb_clk;
306 /* unkown core to csb ratio */
310 #if defined (CONFIG_MPC8360)
311 qepmf = (im->reset.rcwl & RCWL_CEPMF) >> RCWL_CEPMF_SHIFT;
312 qepdf = (im->reset.rcwl & RCWL_CEPDF) >> RCWL_CEPDF_SHIFT;
313 qe_clk = (pci_sync_in * qepmf)/(1+qepdf);
314 brg_clk = qe_clk / 2;
317 gd->csb_clk = csb_clk;
318 #if defined(CONFIG_MPC8349)
319 gd->tsec1_clk = tsec1_clk;
320 gd->tsec2_clk = tsec2_clk;
321 gd->usbmph_clk = usbmph_clk;
322 gd->usbdr_clk = usbdr_clk;
324 gd->core_clk = core_clk;
325 gd->i2c1_clk = i2c1_clk;
326 gd->i2c2_clk = i2c2_clk;
327 gd->enc_clk = enc_clk;
328 gd->lbiu_clk = lbiu_clk;
329 gd->lclk_clk = lclk_clk;
330 gd->ddr_clk = ddr_clk;
331 #if defined (CONFIG_MPC8360)
332 gd->ddr_sec_clk = ddr_sec_clk;
334 gd->brg_clk = brg_clk;
336 gd->cpu_clk = gd->core_clk;
337 gd->bus_clk = gd->csb_clk;
342 ulong get_ddr_clk(ulong dummy)
348 /********************************************
350 * return system bus freq in Hz
351 *********************************************/
352 ulong get_bus_freq (ulong dummy)
357 int print_clock_conf (void)
359 printf("Clock configuration:\n");
360 printf(" Coherent System Bus: %4d MHz\n",gd->csb_clk/1000000);
361 printf(" Core: %4d MHz\n",gd->core_clk/1000000);
362 #if defined (CONFIG_MPC8360)
363 printf(" QE: %4d MHz\n",gd->qe_clk/1000000);
365 printf(" Local Bus Controller:%4d MHz\n",gd->lbiu_clk/1000000);
366 printf(" Local Bus: %4d MHz\n",gd->lclk_clk/1000000);
367 printf(" DDR: %4d MHz\n",gd->ddr_clk/1000000);
368 #if defined (CONFIG_MPC8360)
369 printf(" DDR Secondary: %4d MHz\n",gd->ddr_sec_clk/1000000);
371 printf(" SEC: %4d MHz\n",gd->enc_clk/1000000);
372 printf(" I2C1: %4d MHz\n",gd->i2c1_clk/1000000);
373 printf(" I2C2: %4d MHz\n",gd->i2c2_clk/1000000);
374 #if defined(CONFIG_MPC8349)
375 printf(" TSEC1: %4d MHz\n",gd->tsec1_clk/1000000);
376 printf(" TSEC2: %4d MHz\n",gd->tsec2_clk/1000000);
377 printf(" USB MPH: %4d MHz\n",gd->usbmph_clk/1000000);
378 printf(" USB DR: %4d MHz\n",gd->usbdr_clk/1000000);