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>

4 files changed, 12 insertions, 0 deletions

diff --git a/arch/arm/mach-s5p64x0/clock-s5p6440.c b/arch/arm/mach-s5p64x0/clock-s5p6440.c
index cfccdff744d2..0d728d3383b4 100644
--- a/arch/arm/mach-s5p64x0/clock-s5p6440.c
+++ b/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;
diff --git a/arch/arm/mach-s5p64x0/clock-s5p6450.c b/arch/arm/mach-s5p64x0/clock-s5p6450.c
index f1498d35111b..1b9b0f92d178 100644
--- a/arch/arm/mach-s5p64x0/clock-s5p6450.c
+++ b/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;
diff --git a/arch/arm/mach-s5pc100/clock.c b/arch/arm/mach-s5pc100/clock.c
index 42c2636ca3ac..9e192a0ad4f9 100644
--- a/arch/arm/mach-s5pc100/clock.c
+++ b/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;
diff --git a/arch/arm/mach-s5pv210/clock.c b/arch/arm/mach-s5pv210/clock.c
index 156aa8af9072..38ad7e55ab12 100644
--- a/arch/arm/mach-s5pv210/clock.c
+++ b/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;