diff --git a/arch/arm/mach-uniphier/include/mach/sc-regs.h b/arch/arm/mach-uniphier/include/mach/sc-regs.h
index caec6c257475d2410ade3118c8a1b2bafb0793c8..20878e2d1c7cd246408517078afed7083bff7927 100644
--- a/arch/arm/mach-uniphier/include/mach/sc-regs.h
+++ b/arch/arm/mach-uniphier/include/mach/sc-regs.h
@@ -11,10 +11,6 @@
 
 #define SC_BASE_ADDR			0x61840000
 
-#define SC_MPLLOSCCTL                   (SC_BASE_ADDR | 0x1184)
-#define SC_MPLLOSCCTL_MPLLEN		(0x1 << 0)
-#define SC_MPLLOSCCTL_MPLLST		(0x1 << 1)
-
 #define SC_DPLLCTRL			(SC_BASE_ADDR | 0x1200)
 #define SC_DPLLCTRL_SSC_EN		(0x1 << 31)
 #define SC_DPLLCTRL_FOUTMODE_MASK        (0xf << 16)
diff --git a/arch/arm/mach-uniphier/ph1-pro4/pll_init.c b/arch/arm/mach-uniphier/ph1-pro4/pll_init.c
index 3d2954859526f0644e7b989ab6a0dc60d18a2d26..2a965a5e67397c167db4f4f4d1c1a77a6203bcdc 100644
--- a/arch/arm/mach-uniphier/ph1-pro4/pll_init.c
+++ b/arch/arm/mach-uniphier/ph1-pro4/pll_init.c
@@ -46,22 +46,6 @@ static void dpll_init(void)
 	writel(tmp, SC_DPLLCTRL2);
 }
 
-static void stop_mpll(void)
-{
-	u32 tmp;
-
-	tmp = readl(SC_MPLLOSCCTL);
-
-	if (!(tmp & SC_MPLLOSCCTL_MPLLST))
-		return; /* already stopped */
-
-	tmp &= ~SC_MPLLOSCCTL_MPLLEN;
-	writel(tmp, SC_MPLLOSCCTL);
-
-	while (readl(SC_MPLLOSCCTL) & SC_MPLLOSCCTL_MPLLST)
-		;
-}
-
 static void vpll_init(void)
 {
 	u32 tmp, clk_mode_axosel;
@@ -157,7 +141,6 @@ static void vpll_init(void)
 void pll_init(void)
 {
 	dpll_init();
-	stop_mpll();
 	vpll_init();
 
 	/*