1 files changed, 57 insertions, 19 deletions

diff --git a/arch/arm/cpu/armv7/s5pc2xx/clock.c b/arch/arm/cpu/armv7/s5pc2xx/clock.c
index 450a63048..5ecd47596 100644
--- a/arch/arm/cpu/armv7/s5pc2xx/clock.c
+++ b/arch/arm/cpu/armv7/s5pc2xx/clock.c
@@ -124,29 +124,35 @@ static unsigned long s5pc210_get_pwm_clk(void)
 	unsigned int sel;
 	unsigned int ratio;
 
-	/*
-	 * CLK_SRC_PERIL0
-	 * PWM_SEL [27:24]
-	 */
-	sel = readl(&clk->src_peril0);
-	sel = (sel >> 24) & 0xf;
+	if (s5p_get_cpu_rev() == 0) {
+		/*
+		 * CLK_SRC_PERIL0
+		 * PWM_SEL [27:24]
+		 */
+		sel = readl(&clk->src_peril0);
+		sel = (sel >> 24) & 0xf;
 
-	if (sel == 0x6)
+		if (sel == 0x6)
+			sclk = get_pll_clk(MPLL);
+		else if (sel == 0x7)
+			sclk = get_pll_clk(EPLL);
+		else if (sel == 0x8)
+			sclk = get_pll_clk(VPLL);
+		else
+			return 0;
+
+		/*
+		 * CLK_DIV_PERIL3
+		 * PWM_RATIO [3:0]
+		 */
+		ratio = readl(&clk->div_peril3);
+		ratio = ratio & 0xf;
+	} else if (s5p_get_cpu_rev() == 1) {
 		sclk = get_pll_clk(MPLL);
-	else if (sel == 0x7)
-		sclk = get_pll_clk(EPLL);
-	else if (sel == 0x8)
-		sclk = get_pll_clk(VPLL);
-	else
+		ratio = 8;
+	} else
 		return 0;
 
-	/*
-	 * CLK_DIV_PERIL3
-	 * PWM_RATIO [3:0]
-	 */
-	ratio = readl(&clk->div_peril3);
-	ratio = ratio & 0xf;
-
 	pclk = sclk / (ratio + 1);
 
 	return pclk;
@@ -199,6 +205,33 @@ static unsigned long s5pc210_get_uart_clk(int dev_index)
 	return uclk;
 }
 
+/* s5pc210: set the mmc clock */
+static void s5pc210_set_mmc_clk(int dev_index, unsigned int div)
+{
+	struct s5pc210_clock *clk =
+		(struct s5pc210_clock *)samsung_get_base_clock();
+	unsigned int addr;
+	unsigned int val;
+
+	/*
+	 * CLK_DIV_FSYS1
+	 * MMC0_PRE_RATIO [15:8], MMC1_PRE_RATIO [31:24]
+	 * CLK_DIV_FSYS2
+	 * MMC2_PRE_RATIO [15:8], MMC3_PRE_RATIO [31:24]
+	 */
+	if (dev_index < 2) {
+		addr = (unsigned int)&clk->div_fsys1;
+	} else {
+		addr = (unsigned int)&clk->div_fsys2;
+		dev_index -= 2;
+	}
+
+	val = readl(addr);
+	val &= ~(0xff << ((dev_index << 4) + 8));
+	val |= (div & 0xff) << ((dev_index << 4) + 8);
+	writel(val, addr);
+}
+
 unsigned long get_pll_clk(int pllreg)
 {
 	return s5pc210_get_pll_clk(pllreg);
@@ -218,3 +251,8 @@ unsigned long get_uart_clk(int dev_index)
 {
 	return s5pc210_get_uart_clk(dev_index);
 }
+
+void set_mmc_clk(int dev_index, unsigned int div)
+{
+	s5pc210_set_mmc_clk(dev_index, div);
+}