[ARM] 2856/1: S3C2440 - show DVS status at startup

Patch from Ben Dooks

Show the state of DVS (Dynamic Voltage Scaling) when
starting up on the S3C2440

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

diff --git a/arch/arm/mach-s3c2410/s3c2440-clock.c b/arch/arm/mach-s3c2410/s3c2440-clock.c
index b018a1f..c67e097 100644 (file)
--- a/arch/arm/mach-s3c2410/s3c2440-clock.c
+++ b/arch/arm/mach-s3c2410/s3c2440-clock.c
@@ -68,6 +68,7 @@ static struct clk s3c2440_clk_ac97 = {
 static int s3c2440_clk_add(struct sys_device *sysdev)
 {
        unsigned long upllcon = __raw_readl(S3C2410_UPLLCON);
+       unsigned long camdivn = __raw_readl(S3C2440_CAMDIVN);
        struct clk *clk_h;
        struct clk *clk_p;
        struct clk *clk_xtal;
@@ -80,8 +81,9 @@ static int s3c2440_clk_add(struct sys_device *sysdev)
 
        s3c2440_clk_upll.rate = s3c2410_get_pll(upllcon, clk_xtal->rate);
 
-       printk("S3C2440: Clock Support, UPLL %ld.%03ld MHz\n",
-              print_mhz(s3c2440_clk_upll.rate));
+       printk("S3C2440: Clock Support, UPLL %ld.%03ld MHz, DVS %s\n",
+              print_mhz(s3c2440_clk_upll.rate),
+              (camdivn & S3C2440_CAMDIVN_DVSEN) ? "on" : "off");
 
        clk_p = clk_get(NULL, "pclk");
        clk_h = clk_get(NULL, "hclk");