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-rw-r--r--arch/arm/mach-s3c2410/clock.c9
-rw-r--r--include/asm-arm/arch-s3c2410/regs-clock.h11
2 files changed, 18 insertions, 2 deletions
diff --git a/arch/arm/mach-s3c2410/clock.c b/arch/arm/mach-s3c2410/clock.c
index 9a66050e887d..f59608268751 100644
--- a/arch/arm/mach-s3c2410/clock.c
+++ b/arch/arm/mach-s3c2410/clock.c
@@ -388,6 +388,7 @@ int __init s3c24xx_setup_clocks(unsigned long xtal,
unsigned long hclk,
unsigned long pclk)
{
+ unsigned long clkslow = __raw_readl(S3C2410_CLKSLOW);
struct clk *clkp = init_clocks;
int ptr;
int ret;
@@ -446,5 +447,13 @@ int __init s3c24xx_setup_clocks(unsigned long xtal,
}
}
+ /* show the clock-slow value */
+
+ printk("CLOCK: Slow mode (%ld.%ld MHz), %s, MPLL %s, UPLL %s\n",
+ print_mhz(xtal / ( 2 * S3C2410_CLKSLOW_GET_SLOWVAL(clkslow))),
+ (clkslow & S3C2410_CLKSLOW_SLOW) ? "slow" : "fast",
+ (clkslow & S3C2410_CLKSLOW_MPLL_OFF) ? "off" : "on",
+ (clkslow & S3C2410_CLKSLOW_UCLK_OFF) ? "off" : "on");
+
return 0;
}
diff --git a/include/asm-arm/arch-s3c2410/regs-clock.h b/include/asm-arm/arch-s3c2410/regs-clock.h
index e5e938b79acc..16f4c3cc1388 100644
--- a/include/asm-arm/arch-s3c2410/regs-clock.h
+++ b/include/asm-arm/arch-s3c2410/regs-clock.h
@@ -1,7 +1,7 @@
/* linux/include/asm/arch-s3c2410/regs-clock.h
*
- * Copyright (c) 2003,2004 Simtec Electronics <linux@simtec.co.uk>
- * http://www.simtec.co.uk/products/SWLINUX/
+ * Copyright (c) 2003,2004,2005 Simtec Electronics <linux@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -17,6 +17,7 @@
* 29-Sep-2004 Ben Dooks Fixed usage for assembly inclusion
* 10-Feb-2005 Ben Dooks Fixed CAMDIVN address (Guillaume Gourat)
* 10-Mar-2005 Lucas Villa Real Changed S3C2410_VA to S3C24XX_VA
+ * 27-Aug-2005 Ben Dooks Add clock-slow info
*/
#ifndef __ASM_ARM_REGS_CLOCK
@@ -74,6 +75,12 @@
#define S3C2410_CLKDIVN_PDIVN (1<<0)
#define S3C2410_CLKDIVN_HDIVN (1<<1)
+#define S3C2410_CLKSLOW_UCLK_OFF (1<<7)
+#define S3C2410_CLKSLOW_MPLL_OFF (1<<5)
+#define S3C2410_CLKSLOW_SLOW (1<<4)
+#define S3C2410_CLKSLOW_SLOWVAL(x) (x)
+#define S3C2410_CLKSLOW_GET_SLOWVAL(x) ((x) & 7)
+
#ifndef __ASSEMBLY__
static inline unsigned int