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,
29 #include <asm/processor.h>
31 DECLARE_GLOBAL_DATA_PTR;
33 /* ----------------------------------------------------------------- */
51 mult_t core_csb_ratio;
55 corecnf_t corecnf_tab[] = {
56 {_byp, _byp}, /* 0x00 */
57 {_byp, _byp}, /* 0x01 */
58 {_byp, _byp}, /* 0x02 */
59 {_byp, _byp}, /* 0x03 */
60 {_byp, _byp}, /* 0x04 */
61 {_byp, _byp}, /* 0x05 */
62 {_byp, _byp}, /* 0x06 */
63 {_byp, _byp}, /* 0x07 */
64 {_1x, _x2}, /* 0x08 */
65 {_1x, _x4}, /* 0x09 */
66 {_1x, _x8}, /* 0x0A */
67 {_1x, _x8}, /* 0x0B */
68 {_1_5x, _x2}, /* 0x0C */
69 {_1_5x, _x4}, /* 0x0D */
70 {_1_5x, _x8}, /* 0x0E */
71 {_1_5x, _x8}, /* 0x0F */
72 {_2x, _x2}, /* 0x10 */
73 {_2x, _x4}, /* 0x11 */
74 {_2x, _x8}, /* 0x12 */
75 {_2x, _x8}, /* 0x13 */
76 {_2_5x, _x2}, /* 0x14 */
77 {_2_5x, _x4}, /* 0x15 */
78 {_2_5x, _x8}, /* 0x16 */
79 {_2_5x, _x8}, /* 0x17 */
80 {_3x, _x2}, /* 0x18 */
81 {_3x, _x4}, /* 0x19 */
82 {_3x, _x8}, /* 0x1A */
83 {_3x, _x8}, /* 0x1B */
86 /* ----------------------------------------------------------------- */
93 volatile immap_t *im = (immap_t *) CFG_IMMR;
98 u32 corecnf_tab_index;
103 #if defined(CONFIG_MPC834X) || defined(CONFIG_MPC831X)
108 #ifdef CONFIG_MPC834X
113 #if !defined(CONFIG_MPC832X)
120 #if defined(CONFIG_MPC8360)
123 #if defined(CONFIG_MPC8360) || defined(CONFIG_MPC832X)
130 if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32) im)
133 clkin_div = ((im->clk.spmr & SPMR_CKID) >> SPMR_CKID_SHIFT);
135 if (im->reset.rcwh & HRCWH_PCI_HOST) {
136 #if defined(CONFIG_83XX_CLKIN)
137 pci_sync_in = CONFIG_83XX_CLKIN / (1 + clkin_div);
139 pci_sync_in = 0xDEADBEEF;
142 #if defined(CONFIG_83XX_PCICLK)
143 pci_sync_in = CONFIG_83XX_PCICLK;
145 pci_sync_in = 0xDEADBEEF;
149 spmf = ((im->reset.rcwl & HRCWL_SPMF) >> HRCWL_SPMF_SHIFT);
150 csb_clk = pci_sync_in * (1 + clkin_div) * spmf;
154 #if defined(CONFIG_MPC834X) || defined(CONFIG_MPC831X)
155 switch ((sccr & SCCR_TSEC1CM) >> SCCR_TSEC1CM_SHIFT) {
163 tsec1_clk = csb_clk / 2;
166 tsec1_clk = csb_clk / 3;
169 /* unkown SCCR_TSEC1CM value */
173 switch ((sccr & SCCR_USBDRCM) >> SCCR_USBDRCM_SHIFT) {
181 usbdr_clk = csb_clk / 2;
184 usbdr_clk = csb_clk / 3;
187 /* unkown SCCR_USBDRCM value */
192 #if defined(CONFIG_MPC834X)
193 switch ((sccr & SCCR_TSEC2CM) >> SCCR_TSEC2CM_SHIFT) {
201 tsec2_clk = csb_clk / 2;
204 tsec2_clk = csb_clk / 3;
207 /* unkown SCCR_TSEC2CM value */
211 i2c1_clk = tsec2_clk;
213 switch ((sccr & SCCR_USBMPHCM) >> SCCR_USBMPHCM_SHIFT) {
218 usbmph_clk = csb_clk;
221 usbmph_clk = csb_clk / 2;
224 usbmph_clk = csb_clk / 3;
227 /* unkown SCCR_USBMPHCM value */
231 if (usbmph_clk != 0 && usbdr_clk != 0 && usbmph_clk != usbdr_clk) {
232 /* if USB MPH clock is not disabled and
233 * USB DR clock is not disabled then
234 * USB MPH & USB DR must have the same rate
238 #elif defined(CONFIG_MPC831X)
239 tsec2_clk = tsec1_clk;
241 if (!(sccr & SCCR_TSEC1ON))
243 if (!(sccr & SCCR_TSEC2ON))
247 #if !defined(CONFIG_MPC834X)
250 #if !defined(CONFIG_MPC832X)
251 i2c2_clk = csb_clk; /* i2c-2 clk is equal to csb clk */
254 switch ((sccr & SCCR_ENCCM) >> SCCR_ENCCM_SHIFT) {
262 enc_clk = csb_clk / 2;
265 enc_clk = csb_clk / 3;
268 /* unkown SCCR_ENCCM value */
273 (1 + ((im->reset.rcwl & HRCWL_LBIUCM) >> HRCWL_LBIUCM_SHIFT));
274 lcrr = (im->lbus.lcrr & LCRR_CLKDIV) >> LCRR_CLKDIV_SHIFT;
279 lclk_clk = lbiu_clk / lcrr;
287 (1 + ((im->reset.rcwl & HRCWL_DDRCM) >> HRCWL_DDRCM_SHIFT));
288 corepll = (im->reset.rcwl & HRCWL_COREPLL) >> HRCWL_COREPLL_SHIFT;
289 #if defined(CONFIG_MPC8360)
290 ddr_sec_clk = csb_clk * (1 +
291 ((im->reset.rcwl & HRCWL_LBIUCM) >> HRCWL_LBIUCM_SHIFT));
294 corecnf_tab_index = ((corepll & 0x1F) << 2) | ((corepll & 0x60) >> 5);
295 if (corecnf_tab_index > (sizeof(corecnf_tab) / sizeof(corecnf_t))) {
296 /* corecnf_tab_index is too high, possibly worng value */
299 switch (corecnf_tab[corecnf_tab_index].core_csb_ratio) {
306 core_clk = (3 * csb_clk) / 2;
309 core_clk = 2 * csb_clk;
312 core_clk = (5 * csb_clk) / 2;
315 core_clk = 3 * csb_clk;
318 /* unkown core to csb ratio */
322 #if defined(CONFIG_MPC8360) || defined(CONFIG_MPC832X)
323 qepmf = (im->reset.rcwl & HRCWL_CEPMF) >> HRCWL_CEPMF_SHIFT;
324 qepdf = (im->reset.rcwl & HRCWL_CEPDF) >> HRCWL_CEPDF_SHIFT;
325 qe_clk = (pci_sync_in * qepmf) / (1 + qepdf);
326 brg_clk = qe_clk / 2;
329 gd->csb_clk = csb_clk;
330 #if defined(CONFIG_MPC834X) || defined(CONFIG_MPC831X)
331 gd->tsec1_clk = tsec1_clk;
332 gd->tsec2_clk = tsec2_clk;
333 gd->usbdr_clk = usbdr_clk;
335 #if defined(CONFIG_MPC834X)
336 gd->usbmph_clk = usbmph_clk;
338 gd->core_clk = core_clk;
339 gd->i2c1_clk = i2c1_clk;
340 #if !defined(CONFIG_MPC832X)
341 gd->i2c2_clk = i2c2_clk;
343 gd->enc_clk = enc_clk;
344 gd->lbiu_clk = lbiu_clk;
345 gd->lclk_clk = lclk_clk;
346 gd->ddr_clk = ddr_clk;
347 #if defined(CONFIG_MPC8360)
348 gd->ddr_sec_clk = ddr_sec_clk;
350 #if defined(CONFIG_MPC8360) || defined(CONFIG_MPC832X)
352 gd->brg_clk = brg_clk;
354 gd->cpu_clk = gd->core_clk;
355 gd->bus_clk = gd->csb_clk;
360 /********************************************
362 * return system bus freq in Hz
363 *********************************************/
364 ulong get_bus_freq(ulong dummy)
369 int do_clocks (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
371 printf("Clock configuration:\n");
372 printf(" Core: %4d MHz\n", gd->core_clk / 1000000);
373 printf(" Coherent System Bus: %4d MHz\n", gd->csb_clk / 1000000);
374 #if defined(CONFIG_MPC8360) || defined(CONFIG_MPC832X)
375 printf(" QE: %4d MHz\n", gd->qe_clk / 1000000);
376 printf(" BRG: %4d MHz\n", gd->brg_clk / 1000000);
378 printf(" Local Bus Controller:%4d MHz\n", gd->lbiu_clk / 1000000);
379 printf(" Local Bus: %4d MHz\n", gd->lclk_clk / 1000000);
380 printf(" DDR: %4d MHz\n", gd->ddr_clk / 1000000);
381 #if defined(CONFIG_MPC8360)
382 printf(" DDR Secondary: %4d MHz\n", gd->ddr_sec_clk / 1000000);
384 printf(" SEC: %4d MHz\n", gd->enc_clk / 1000000);
385 printf(" I2C1: %4d MHz\n", gd->i2c1_clk / 1000000);
386 #if !defined(CONFIG_MPC832X)
387 printf(" I2C2: %4d MHz\n", gd->i2c2_clk / 1000000);
389 #if defined(CONFIG_MPC834X) || defined(CONFIG_MPC831X)
390 printf(" TSEC1: %4d MHz\n", gd->tsec1_clk / 1000000);
391 printf(" TSEC2: %4d MHz\n", gd->tsec2_clk / 1000000);
392 printf(" USB DR: %4d MHz\n", gd->usbdr_clk / 1000000);
394 #if defined(CONFIG_MPC834X)
395 printf(" USB MPH: %4d MHz\n", gd->usbmph_clk / 1000000);
400 U_BOOT_CMD(clocks, 1, 0, do_clocks,
401 "clocks - print clock configuration\n",