mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-27 09:40:49 +02:00
09b96811e8
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13291 3c298f89-4303-0410-b956-a3cf2f4a3e73
89 lines
2.0 KiB
C
89 lines
2.0 KiB
C
/*
|
|
* (C) Copyright 2003
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.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>
|
|
#include <asm-mips/danube.h>
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* get_cpuclk - returns the frequency of the CPU.
|
|
*
|
|
* NOTE:
|
|
* This functions should be used by the hardware driver to get the correct
|
|
* frequency of the CPU.
|
|
*/
|
|
|
|
unsigned int danube_get_ddr_hz(void)
|
|
{
|
|
switch((*DANUBE_CGU_SYS) & 0x3){
|
|
case 0:
|
|
default:
|
|
return 166666667;
|
|
case 1:
|
|
return 133333333;
|
|
case 2:
|
|
return 111111111;
|
|
case 3:
|
|
return 83333333;
|
|
}
|
|
}
|
|
|
|
|
|
uint danube_get_cpuclk(void)
|
|
{
|
|
#ifdef CONFIG_USE_EMULATOR
|
|
return EMULATOR_CPU_SPEED;
|
|
#else //NOT CONFIG_USE_EMULATOR
|
|
unsigned int ddr_clock=danube_get_ddr_hz();
|
|
switch((*DANUBE_CGU_SYS) & 0xc){
|
|
case 0:
|
|
default:
|
|
return 333333333;
|
|
case 4:
|
|
return ddr_clock;
|
|
case 8:
|
|
return ddr_clock << 1;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
|
|
uint danube_get_fpiclk(void)
|
|
{
|
|
#ifdef CONFIG_USE_EMULATOR
|
|
unsigned int clkCPU;
|
|
clkCPU = danube_get_cpu_hz();
|
|
return clkCPU >> 2;
|
|
#else //NOT CONFIG_USE_EMULATOR
|
|
unsigned int ddr_clock=danube_get_ddr_hz();
|
|
if ((*DANUBE_CGU_SYS) & 0x40){
|
|
return ddr_clock >> 1;
|
|
}
|
|
return ddr_clock;
|
|
#endif
|
|
}
|
|
|
|
|