diff options
Diffstat (limited to 'kernel/arch/mips/ar7/time.c')
| -rw-r--r-- | kernel/arch/mips/ar7/time.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/kernel/arch/mips/ar7/time.c b/kernel/arch/mips/ar7/time.c new file mode 100644 index 000000000..22c93213b --- /dev/null +++ b/kernel/arch/mips/ar7/time.c @@ -0,0 +1,43 @@ +/* + * Carsten Langgaard, carstenl@mips.com + * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope 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. + * + * Setting up the clock on the MIPS boards. + */ + +#include <linux/init.h> +#include <linux/time.h> +#include <linux/err.h> +#include <linux/clk.h> + +#include <asm/time.h> +#include <asm/mach-ar7/ar7.h> + +void __init plat_time_init(void) +{ + struct clk *cpu_clk; + + /* Initialize ar7 clocks so the CPU clock frequency is correct */ + ar7_init_clocks(); + + cpu_clk = clk_get(NULL, "cpu"); + if (IS_ERR(cpu_clk)) { + printk(KERN_ERR "unable to get cpu clock\n"); + return; + } + + mips_hpt_frequency = clk_get_rate(cpu_clk) / 2; +} |