ARM: S5P: Add EPLL rate change warning

This patch adds warning about changing EPLL rate to notice that other
driver that controls H/W, which is using EPLL, will has unknown effects
by this EPLL rate change.

Signed-off-by: Seungwhan Youn <sw.youn@samsung.com>
Acked-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/mach-s5p64x0/clock-s5p6440.c

@@ -79,6 +79,9 @@ static int s5p6440_epll_set_rate(struct clk *clk, unsigned long rate)
 	__raw_writel(epll_con, S5P64X0_EPLL_CON);
 	__raw_writel(epll_con_k, S5P64X0_EPLL_CON_K);
 
+	printk(KERN_WARNING "EPLL Rate changes from %lu to %lu\n",
+			clk->rate, rate);
+
 	clk->rate = rate;
 
 	return 0;

arch/arm/mach-s5p64x0/clock-s5p6450.c

@@ -80,6 +80,9 @@ static int s5p6450_epll_set_rate(struct clk *clk, unsigned long rate)
 	__raw_writel(epll_con, S5P64X0_EPLL_CON);
 	__raw_writel(epll_con_k, S5P64X0_EPLL_CON_K);
 
+	printk(KERN_WARNING "EPLL Rate changes from %lu to %lu\n",
+			clk->rate, rate);
+
 	clk->rate = rate;
 
 	return 0;

arch/arm/mach-s5pc100/clock.c

@@ -323,6 +323,9 @@ static int s5pc100_epll_set_rate(struct clk *clk, unsigned long rate)
 
 	__raw_writel(epll_con, S5P_EPLL_CON);
 
+	printk(KERN_WARNING "EPLL Rate changes from %lu to %lu\n",
+			clk->rate, rate);
+
 	clk->rate = rate;
 
 	return 0;

arch/arm/mach-s5pv210/clock.c

@@ -1109,6 +1109,9 @@ static int s5pv210_epll_set_rate(struct clk *clk, unsigned long rate)
 	__raw_writel(epll_con, S5P_EPLL_CON);
 	__raw_writel(epll_con_k, S5P_EPLL_CON1);
 
+	printk(KERN_WARNING "EPLL Rate changes from %lu to %lu\n",
+			clk->rate, rate);
+
 	clk->rate = rate;
 
 	return 0;