1 /* 2 * 3 * (C) Copyright 2000-2003 4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 5 * 6 * Copyright (C) 2004-2007, 2012 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 #include <asm/io.h> 33 34 DECLARE_GLOBAL_DATA_PTR; 35 /* 36 * get_clocks() fills in gd->cpu_clock and gd->bus_clk 37 */ 38 int get_clocks(void) 39 { 40 pll_t *pll = (pll_t *)(MMAP_PLL); 41 42 out_be32(&pll->syncr, PLL_SYNCR_MFD(1)); 43 44 while (!(in_be32(&pll->synsr) & PLL_SYNSR_LOCK)) 45 ; 46 47 gd->bus_clk = CONFIG_SYS_CLK; 48 gd->cpu_clk = (gd->bus_clk * 2); 49 50 #ifdef CONFIG_FSL_I2C 51 gd->arch.i2c1_clk = gd->bus_clk; 52 #endif 53 54 return (0); 55 } 56