[ARM] 2855/1: S3C2410 - add CLKSLOW definitions, and show in init

Patch from Ben Dooks

Add the definitions for the S3C2410_CLKSLOW registers to
the header files, and show the values when the system
starts up

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 9 insertions, 0 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;
 }