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Diffstat (limited to 'cpu/mcf52x2/speed.c')
-rw-r--r-- | cpu/mcf52x2/speed.c | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/cpu/mcf52x2/speed.c b/cpu/mcf52x2/speed.c deleted file mode 100644 index b485e1c..0000000 --- a/cpu/mcf52x2/speed.c +++ /dev/null @@ -1,100 +0,0 @@ -/* - * (C) Copyright 2003 - * Josef Baumgartner <josef.baumgartner@telex.de> - * - * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. - * Hayden Fraser (Hayden.Fraser@freescale.com) - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include <common.h> -#include <asm/processor.h> -#include <asm/immap.h> - -DECLARE_GLOBAL_DATA_PTR; - -/* get_clocks() fills in gd->cpu_clock and gd->bus_clk */ -int get_clocks (void) -{ -#if defined(CONFIG_M5208) - volatile pll_t *pll = (pll_t *) MMAP_PLL; - - pll->odr = CONFIG_SYS_PLL_ODR; - pll->fdr = CONFIG_SYS_PLL_FDR; -#endif - -#if defined(CONFIG_M5249) || defined(CONFIG_M5253) - volatile unsigned long cpll = mbar2_readLong(MCFSIM_PLLCR); - unsigned long pllcr; - -#ifndef CONFIG_SYS_PLL_BYPASS - -#ifdef CONFIG_M5249 - /* Setup the PLL to run at the specified speed */ -#ifdef CONFIG_SYS_FAST_CLK - pllcr = 0x925a3100; /* ~140MHz clock (PLL bypass = 0) */ -#else - pllcr = 0x135a4140; /* ~72MHz clock (PLL bypass = 0) */ -#endif -#endif /* CONFIG_M5249 */ - -#ifdef CONFIG_M5253 - pllcr = CONFIG_SYS_PLLCR; -#endif /* CONFIG_M5253 */ - - cpll = cpll & 0xfffffffe; /* Set PLL bypass mode = 0 (PSTCLK = crystal) */ - mbar2_writeLong(MCFSIM_PLLCR, cpll); /* Set the PLL to bypass mode (PSTCLK = crystal) */ - mbar2_writeLong(MCFSIM_PLLCR, pllcr); /* set the clock speed */ - pllcr ^= 0x00000001; /* Set pll bypass to 1 */ - mbar2_writeLong(MCFSIM_PLLCR, pllcr); /* Start locking (pll bypass = 1) */ - udelay(0x20); /* Wait for a lock ... */ -#endif /* #ifndef CONFIG_SYS_PLL_BYPASS */ - -#endif /* CONFIG_M5249 || CONFIG_M5253 */ - -#if defined(CONFIG_M5275) - volatile pll_t *pll = (volatile pll_t *)(MMAP_PLL); - - /* Setup PLL */ - pll->syncr = 0x01080000; - while (!(pll->synsr & FMPLL_SYNSR_LOCK)) - ; - pll->syncr = 0x01000000; - while (!(pll->synsr & FMPLL_SYNSR_LOCK)) - ; -#endif - - gd->cpu_clk = CONFIG_SYS_CLK; -#if defined(CONFIG_M5208) || defined(CONFIG_M5249) || defined(CONFIG_M5253) || \ - defined(CONFIG_M5271) || defined(CONFIG_M5275) - gd->bus_clk = gd->cpu_clk / 2; -#else - gd->bus_clk = gd->cpu_clk; -#endif - -#ifdef CONFIG_FSL_I2C - gd->i2c1_clk = gd->bus_clk; -#ifdef CONFIG_SYS_I2C2_OFFSET - gd->i2c2_clk = gd->bus_clk; -#endif -#endif - - return (0); -} |