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ARM: OSIRIS: CPUFREQ: Add CPU frequency scaling support 

Add CPU frequency scalling support to the Simtec Osiris.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Ben Dooks 2009-07-30 23:23:32 +01:00 committed by Ben Dooks
parent 0345b51c6a
commit baf6b281cf
2 changed files with 10 additions and 0 deletions
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1
arch/arm/mach-s3c2440/Kconfig
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@ -46,6 +46,7 @@ config MACH_OSIRIS
select PM_SIMTEC if PM
select S3C24XX_GPIO_EXTRA128
select S3C2440_XTAL_12000000
select S3C2410_IOTIMING if S3C2440_CPUFREQ
select S3C_DEV_USB_HOST
help
Say Y here if you are using the Simtec IM2440D20 module, also

9
arch/arm/mach-s3c2440/mach-osiris.c
View File

@ -34,6 +34,7 @@
#include <asm/irq.h>
#include <asm/mach-types.h>
#include <plat/cpu-freq.h>
#include <plat/regs-serial.h>
#include <mach/regs-gpio.h>
#include <mach/regs-mem.h>
@ -351,6 +352,12 @@ static struct clk *osiris_clocks[] __initdata = {
&s3c24xx_uclk,
};
static struct s3c_cpufreq_board __initdata osiris_cpufreq = {
.refresh = 7800, /* refresh period is 7.8usec */
.auto_io = 1,
.need_io = 1,
};
static void __init osiris_map_io(void)
{
unsigned long flags;
@ -402,6 +409,8 @@ static void __init osiris_init(void)
s3c_i2c0_set_platdata(NULL);
s3c_cpufreq_setboard(&osiris_cpufreq);
i2c_register_board_info(0, osiris_i2c_devs,
ARRAY_SIZE(osiris_i2c_devs));