ramips: add support for the Senao/EnGenius ESR-9753 board
[openwrt.git] / package / uboot-lantiq / files / cpu / mips / danube / clock.c
1 /*
2 * (C) Copyright 2003
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24 #include <common.h>
25 #include <asm/danube.h>
26
27 ulong ifx_get_ddr_hz(void)
28 {
29 static const ulong ddr_freq[] = {166666667,133333333,111111111,83333333};
30 return ddr_freq[((*DANUBE_CGU_SYS) & 0x3)];
31 }
32
33 ulong ifx_get_cpuclk(void)
34 {
35 #ifdef CONFIG_USE_EMULATOR
36 return EMULATOR_CPU_SPEED;
37 #else //NOT CONFIG_USE_EMULATOR
38 unsigned int ddr_clock=ifx_get_ddr_hz();
39 switch((*DANUBE_CGU_SYS) & 0xc){
40 case 0:
41 default:
42 return 323333333;
43 case 4:
44 return ddr_clock;
45 case 8:
46 return ddr_clock << 1;
47 }
48 #endif
49 }
50
51 ulong get_bus_freq(ulong dummy)
52 {
53 #ifdef CONFIG_USE_EMULATOR
54 unsigned int clkCPU;
55 clkCPU = ifx_get_cpuclk();
56 return clkCPU >> 2;
57 #else //NOT CONFIG_USE_EMULATOR
58 unsigned int ddr_clock=ifx_get_ddr_hz();
59 if ((*DANUBE_CGU_SYS) & 0x40){
60 return ddr_clock >> 1;
61 }
62 return ddr_clock;
63 #endif
64 }
65
This page took 0.052383 seconds and 5 git commands to generate.