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author | Ralph Hempel <ralph.hempel@lantiq.com> | 2010-03-30 13:56:30 +0000 |
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committer | Ralph Hempel <ralph.hempel@lantiq.com> | 2010-03-30 13:56:30 +0000 |
commit | 046d73d3c2bc3a515024c2cc8339d1177e749b77 (patch) | |
tree | e6c0308590b8a125833f31549758973328c4f577 /package/uboot-lantiq/files/cpu/mips/ar9/clock.c | |
parent | aa323e0134c4dd374869446738b701f82d014c89 (diff) | |
download | mtk-20170518-046d73d3c2bc3a515024c2cc8339d1177e749b77.zip mtk-20170518-046d73d3c2bc3a515024c2cc8339d1177e749b77.tar.gz mtk-20170518-046d73d3c2bc3a515024c2cc8339d1177e749b77.tar.bz2 |
add preliminary AR9 support attention: if caches enabled the network is broken attention: the network of the flash image doesn't work because of enabled caches
SVN-Revision: 20606
Diffstat (limited to 'package/uboot-lantiq/files/cpu/mips/ar9/clock.c')
-rw-r--r-- | package/uboot-lantiq/files/cpu/mips/ar9/clock.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/package/uboot-lantiq/files/cpu/mips/ar9/clock.c b/package/uboot-lantiq/files/cpu/mips/ar9/clock.c new file mode 100644 index 0000000..a8aecb4 --- /dev/null +++ b/package/uboot-lantiq/files/cpu/mips/ar9/clock.c @@ -0,0 +1,67 @@ +/* + * (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/ar9.h> + +ulong ifx_get_ddr_hz(void) +{ + switch((*AR9_CGU_SYS) & 0x05) { + case 0x01: + case 0x05: + return CLOCK_111M; + + case 0x00: + case 0x04: + return CLOCK_166M; + } + + return 0; +} + +ulong ifx_get_cpuclk(void) +{ + switch((*AR9_CGU_SYS) & 0x05) { + case 0x00: + case 0x01: + return CLOCK_333M; + + case 0x04: + return CLOCK_166M; + + case 0x05: + return CLOCK_111M; + } + + return 0; +} + +ulong get_bus_freq(ulong dummy) +{ + unsigned int ddr_clock=ifx_get_ddr_hz(); + if((*AR9_CGU_SYS) & 0x40){ + return ddr_clock/2; + } else { + return ddr_clock; + } +} |