/* * * (c) 2004 Sascha Hauer <sascha@saschahauer.de> * * 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>#if defined (CONFIG_IMX)#include <asm/arch/imx-regs.h>/* ------------------------------------------------------------------------- *//* NOTE: This describes the proper use of this file. * * CONFIG_SYS_CLK_FREQ should be defined as the input frequency of the PLL. * SH FIXME: 16780000 in our case * get_FCLK(), get_HCLK(), get_PCLK() and get_UCLK() return the clock of * the specified bus in HZ. *//* ------------------------------------------------------------------------- */ulong get_systemPLLCLK(void){	/* FIXME: We assume System_SEL = 0 here */	u32 spctl0 = SPCTL0;	u32 mfi = (spctl0 >> 10) & 0xf;	u32 mfn = spctl0 & 0x3f;	u32 mfd = (spctl0 >> 16) & 0x3f;	u32 pd =  (spctl0 >> 26) & 0xf;	mfi = mfi<=5 ? 5 : mfi;	return (2*(CONFIG_SYSPLL_CLK_FREQ>>10)*( (mfi<<10) + (mfn<<10)/(mfd+1)))/(pd+1);}ulong get_mcuPLLCLK(void){	/* FIXME: We assume System_SEL = 0 here */	u32 mpctl0 = MPCTL0;	u32 mfi = (mpctl0 >> 10) & 0xf;	u32 mfn = mpctl0 & 0x3f;	u32 mfd = (mpctl0 >> 16) & 0x3f;	u32 pd =  (mpctl0 >> 26) & 0xf;	mfi = mfi<=5 ? 5 : mfi;	return (2*(CONFIG_SYS_CLK_FREQ>>10)*( (mfi<<10) + (mfn<<10)/(mfd+1)))/(pd+1);}ulong get_FCLK(void){	return (( CSCR>>15)&1) ? get_mcuPLLCLK()>>1 : get_mcuPLLCLK();}/* return HCLK frequency */ulong get_HCLK(void){	u32 bclkdiv = (( CSCR >> 10 ) & 0xf) + 1;	printf("bclkdiv: %d\n", bclkdiv);	return get_systemPLLCLK() / bclkdiv;}/* return BCLK frequency */ulong get_BCLK(void){	return get_HCLK();}ulong get_PERCLK1(void){	return get_systemPLLCLK() / (((PCDR) & 0xf)+1);}ulong get_PERCLK2(void){	return get_systemPLLCLK() / (((PCDR>>4) & 0xf)+1);}ulong get_PERCLK3(void){	return get_systemPLLCLK() / (((PCDR>>16) & 0x7f)+1);}#endif /* defined (CONFIG_IMX) */