source: SVN/rincon/u-boot/cpu/mcf523x/speed.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 2 years ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 1.4 KB
Line 
1/*
2 *
3 * (C) Copyright 2000-2003
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 *
6 * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
7 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
8 *
9 * See file CREDITS for list of people who contributed to this
10 * project.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 * MA 02111-1307 USA
26 */
27
28#include <common.h>
29#include <asm/processor.h>
30
31#include <asm/immap.h>
32
33DECLARE_GLOBAL_DATA_PTR;
34/*
35 * get_clocks() fills in gd->cpu_clock and gd->bus_clk
36 */
37int get_clocks(void)
38{
39        volatile pll_t *pll = (volatile pll_t *)(MMAP_PLL);
40
41        pll->syncr = PLL_SYNCR_MFD(1);
42
43        while (!(pll->synsr & PLL_SYNSR_LOCK));
44
45        gd->bus_clk = CFG_CLK;
46        gd->cpu_clk = (gd->bus_clk * 2);
47
48#ifdef CONFIG_FSL_I2C
49        gd->i2c1_clk = gd->bus_clk;
50#endif
51
52        return (0);
53}
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