Merge git://git.denx.de/u-boot-samsung

8 files changed, 383 insertions, 335 deletions

diff --git a/arch/arm/cpu/armv7/exynos/clock.c b/arch/arm/cpu/armv7/exynos/clock.c
index b31c13b14b..c6455c2f3c 100644
--- a/arch/arm/cpu/armv7/exynos/clock.c
+++ b/arch/arm/cpu/armv7/exynos/clock.c
@@ -20,42 +20,84 @@
  * positions of the peripheral clocks of the src and div registers
  */
 struct clk_bit_info {
+	enum periph_id id;
+	int32_t src_mask;
+	int32_t div_mask;
+	int32_t prediv_mask;
 	int8_t src_bit;
 	int8_t div_bit;
 	int8_t prediv_bit;
 };
 
-/* src_bit div_bit prediv_bit */
-static struct clk_bit_info clk_bit_info[] = {
-	{0,	0,	-1},
-	{4,	4,	-1},
-	{8,	8,	-1},
-	{12,	12,	-1},
-	{0,	0,	8},
-	{4,	16,	24},
-	{8,	0,	8},
-	{12,	16,	24},
-	{-1,	-1,	-1},
-	{16,	0,	8},
-	{20,	16,	24},
-	{24,	0,	8},
-	{0,	0,	4},
-	{4,	12,	16},
-	{-1,	-1,	-1},
-	{-1,	-1,	-1},
-	{-1,	24,	0},
-	{-1,	24,	0},
-	{-1,	24,	0},
-	{-1,	24,	0},
-	{-1,	24,	0},
-	{-1,	24,	0},
-	{-1,	24,	0},
-	{-1,	24,	0},
-	{24,	0,	-1},
-	{24,	0,	-1},
-	{24,	0,	-1},
-	{24,	0,	-1},
-	{24,	0,	-1},
+static struct clk_bit_info exynos5_bit_info[] = {
+	/* periph id		s_mask	d_mask	p_mask	s_bit	d_bit	p_bit */
+	{PERIPH_ID_UART0,	0xf,	0xf,	-1,	0,	0,	-1},
+	{PERIPH_ID_UART1,	0xf,	0xf,	-1,	4,	4,	-1},
+	{PERIPH_ID_UART2,	0xf,	0xf,	-1,	8,	8,	-1},
+	{PERIPH_ID_UART3,	0xf,	0xf,	-1,	12,	12,	-1},
+	{PERIPH_ID_I2C0,	-1,	0x7,	0x7,	-1,	24,	0},
+	{PERIPH_ID_I2C1,	-1,	0x7,	0x7,	-1,	24,	0},
+	{PERIPH_ID_I2C2,	-1,	0x7,	0x7,	-1,	24,	0},
+	{PERIPH_ID_I2C3,	-1,	0x7,	0x7,	-1,	24,	0},
+	{PERIPH_ID_I2C4,	-1,	0x7,	0x7,	-1,	24,	0},
+	{PERIPH_ID_I2C5,	-1,	0x7,	0x7,	-1,	24,	0},
+	{PERIPH_ID_I2C6,	-1,	0x7,	0x7,	-1,	24,	0},
+	{PERIPH_ID_I2C7,	-1,	0x7,	0x7,	-1,	24,	0},
+	{PERIPH_ID_SPI0,	0xf,	0xf,	0xff,	16,	0,	8},
+	{PERIPH_ID_SPI1,	0xf,	0xf,	0xff,	20,	16,	24},
+	{PERIPH_ID_SPI2,	0xf,	0xf,	0xff,	24,	0,	8},
+	{PERIPH_ID_SDMMC0,	0xf,	0xf,	0xff,	0,	0,	8},
+	{PERIPH_ID_SDMMC1,	0xf,	0xf,	0xff,	4,	16,	24},
+	{PERIPH_ID_SDMMC2,	0xf,	0xf,	0xff,	8,	0,	8},
+	{PERIPH_ID_SDMMC3,	0xf,	0xf,	0xff,	12,	16,	24},
+	{PERIPH_ID_I2S0,	0xf,	0xf,	0xff,	0,	0,	4},
+	{PERIPH_ID_I2S1,	0xf,	0xf,	0xff,	4,	12,	16},
+	{PERIPH_ID_SPI3,	0xf,	0xf,	0xff,	0,	0,	4},
+	{PERIPH_ID_SPI4,	0xf,	0xf,	0xff,	4,	12,	16},
+	{PERIPH_ID_SDMMC4,	0xf,	0xf,	0xff,	16,	0,	8},
+	{PERIPH_ID_PWM0,	0xf,	0xf,	-1,	24,	0,	-1},
+	{PERIPH_ID_PWM1,	0xf,	0xf,	-1,	24,	0,	-1},
+	{PERIPH_ID_PWM2,	0xf,	0xf,	-1,	24,	0,	-1},
+	{PERIPH_ID_PWM3,	0xf,	0xf,	-1,	24,	0,	-1},
+	{PERIPH_ID_PWM4,	0xf,	0xf,	-1,	24,	0,	-1},
+
+	{PERIPH_ID_NONE,	-1,	-1,	-1,	-1,	-1,	-1},
+};
+
+static struct clk_bit_info exynos542x_bit_info[] = {
+	/* periph id		s_mask	d_mask	p_mask	s_bit	d_bit	p_bit */
+	{PERIPH_ID_UART0,	0xf,	0xf,	-1,	4,	8,	-1},
+	{PERIPH_ID_UART1,	0xf,	0xf,	-1,	8,	12,	-1},
+	{PERIPH_ID_UART2,	0xf,	0xf,	-1,	12,	16,	-1},
+	{PERIPH_ID_UART3,	0xf,	0xf,	-1,	16,	20,	-1},
+	{PERIPH_ID_I2C0,	-1,	0x3f,	-1,	-1,	8,	-1},
+	{PERIPH_ID_I2C1,	-1,	0x3f,	-1,	-1,	8,	-1},
+	{PERIPH_ID_I2C2,	-1,	0x3f,	-1,	-1,	8,	-1},
+	{PERIPH_ID_I2C3,	-1,	0x3f,	-1,	-1,	8,	-1},
+	{PERIPH_ID_I2C4,	-1,	0x3f,	-1,	-1,	8,	-1},
+	{PERIPH_ID_I2C5,	-1,	0x3f,	-1,	-1,	8,	-1},
+	{PERIPH_ID_I2C6,	-1,	0x3f,	-1,	-1,	8,	-1},
+	{PERIPH_ID_I2C7,	-1,	0x3f,	-1,	-1,	8,	-1},
+	{PERIPH_ID_SPI0,	0xf,	0xf,	0xff,	20,	20,	8},
+	{PERIPH_ID_SPI1,	0xf,	0xf,	0xff,	24,	24,	16},
+	{PERIPH_ID_SPI2,	0xf,	0xf,	0xff,	28,	28,	24},
+	{PERIPH_ID_SDMMC0,	0x7,	0x3ff,	-1,	8,	0,	-1},
+	{PERIPH_ID_SDMMC1,	0x7,	0x3ff,	-1,	12,	10,	-1},
+	{PERIPH_ID_SDMMC2,	0x7,	0x3ff,	-1,	16,	20,	-1},
+	{PERIPH_ID_I2C8,	-1,	0x3f,	-1,	-1,	8,	-1},
+	{PERIPH_ID_I2C9,	-1,	0x3f,	-1,	-1,	8,	-1},
+	{PERIPH_ID_I2S0,	0xf,	0xf,	0xff,	0,	0,	4},
+	{PERIPH_ID_I2S1,	0xf,	0xf,	0xff,	4,	12,	16},
+	{PERIPH_ID_SPI3,	0xf,	0xf,	0xff,	12,	16,	0},
+	{PERIPH_ID_SPI4,	0xf,	0xf,	0xff,	16,	20,	8},
+	{PERIPH_ID_PWM0,	0xf,	0xf,	-1,	24,	28,	-1},
+	{PERIPH_ID_PWM1,	0xf,	0xf,	-1,	24,	28,	-1},
+	{PERIPH_ID_PWM2,	0xf,	0xf,	-1,	24,	28,	-1},
+	{PERIPH_ID_PWM3,	0xf,	0xf,	-1,	24,	28,	-1},
+	{PERIPH_ID_PWM4,	0xf,	0xf,	-1,	24,	28,	-1},
+	{PERIPH_ID_I2C10,	-1,	0x3f,	-1,	-1,	8,	-1},
+
+	{PERIPH_ID_NONE,	-1,	-1,	-1,	-1,	-1,	-1},
 };
 
 /* Epll Clock division values to achive different frequency output */
@@ -260,11 +302,72 @@ static unsigned long exynos5_get_pll_clk(int pllreg)
 	return fout;
 }
 
+/* exynos542x: return pll clock frequency */
+static unsigned long exynos542x_get_pll_clk(int pllreg)
+{
+	struct exynos5420_clock *clk =
+		(struct exynos5420_clock *)samsung_get_base_clock();
+	unsigned long r, k = 0;
+
+	switch (pllreg) {
+	case APLL:
+		r = readl(&clk->apll_con0);
+		break;
+	case MPLL:
+		r = readl(&clk->mpll_con0);
+		break;
+	case EPLL:
+		r = readl(&clk->epll_con0);
+		k = readl(&clk->epll_con1);
+		break;
+	case VPLL:
+		r = readl(&clk->vpll_con0);
+		k = readl(&clk->vpll_con1);
+		break;
+	case BPLL:
+		r = readl(&clk->bpll_con0);
+		break;
+	case RPLL:
+		r = readl(&clk->rpll_con0);
+		k = readl(&clk->rpll_con1);
+		break;
+	case SPLL:
+		r = readl(&clk->spll_con0);
+		break;
+	default:
+		printf("Unsupported PLL (%d)\n", pllreg);
+		return 0;
+	}
+
+	return exynos_get_pll_clk(pllreg, r, k);
+}
+
+static struct clk_bit_info *get_clk_bit_info(int peripheral)
+{
+	int i;
+	struct clk_bit_info *info;
+
+	if (proid_is_exynos5420() || proid_is_exynos5800())
+		info = exynos542x_bit_info;
+	else
+		info = exynos5_bit_info;
+
+	for (i = 0; info[i].id != PERIPH_ID_NONE; i++) {
+		if (info[i].id == peripheral)
+			break;
+	}
+
+	if (info[i].id == PERIPH_ID_NONE)
+		debug("ERROR: Peripheral ID %d not found\n", peripheral);
+
+	return &info[i];
+}
+
 static unsigned long exynos5_get_periph_rate(int peripheral)
 {
-	struct clk_bit_info *bit_info = &clk_bit_info[peripheral];
-	unsigned long sclk, sub_clk;
-	unsigned int src, div, sub_div;
+	struct clk_bit_info *bit_info = get_clk_bit_info(peripheral);
+	unsigned long sclk = 0;
+	unsigned int src = 0, div = 0, sub_div = 0;
 	struct exynos5_clock *clk =
 			(struct exynos5_clock *)samsung_get_base_clock();
 
@@ -286,27 +389,30 @@ static unsigned long exynos5_get_periph_rate(int peripheral)
 		break;
 	case PERIPH_ID_I2S0:
 		src = readl(&clk->src_mau);
-		div = readl(&clk->div_mau);
+		div = sub_div = readl(&clk->div_mau);
 	case PERIPH_ID_SPI0:
 	case PERIPH_ID_SPI1:
 		src = readl(&clk->src_peric1);
-		div = readl(&clk->div_peric1);
+		div = sub_div = readl(&clk->div_peric1);
 		break;
 	case PERIPH_ID_SPI2:
 		src = readl(&clk->src_peric1);
-		div = readl(&clk->div_peric2);
+		div = sub_div = readl(&clk->div_peric2);
 		break;
 	case PERIPH_ID_SPI3:
 	case PERIPH_ID_SPI4:
 		src = readl(&clk->sclk_src_isp);
-		div = readl(&clk->sclk_div_isp);
+		div = sub_div = readl(&clk->sclk_div_isp);
 		break;
 	case PERIPH_ID_SDMMC0:
 	case PERIPH_ID_SDMMC1:
+		src = readl(&clk->src_fsys);
+		div = sub_div = readl(&clk->div_fsys1);
+		break;
 	case PERIPH_ID_SDMMC2:
 	case PERIPH_ID_SDMMC3:
 		src = readl(&clk->src_fsys);
-		div = readl(&clk->div_fsys1);
+		div = sub_div = readl(&clk->div_fsys2);
 		break;
 	case PERIPH_ID_I2C0:
 	case PERIPH_ID_I2C1:
@@ -316,18 +422,17 @@ static unsigned long exynos5_get_periph_rate(int peripheral)
 	case PERIPH_ID_I2C5:
 	case PERIPH_ID_I2C6:
 	case PERIPH_ID_I2C7:
-		sclk = exynos5_get_pll_clk(MPLL);
-		sub_div = ((readl(&clk->div_top1) >> bit_info->div_bit)
-								& 0x7) + 1;
-		div = ((readl(&clk->div_top0) >> bit_info->prediv_bit)
-								& 0x7) + 1;
-		return (sclk / sub_div) / div;
+		src = EXYNOS_SRC_MPLL;
+		div = readl(&clk->div_top0);
+		sub_div = readl(&clk->div_top1);
+		break;
 	default:
 		debug("%s: invalid peripheral %d", __func__, peripheral);
 		return -1;
 	};
 
-	src = (src >> bit_info->src_bit) & 0xf;
+	if (bit_info->src_bit >= 0)
+		src = (src >> bit_info->src_bit) & bit_info->src_mask;
 
 	switch (src) {
 	case EXYNOS_SRC_MPLL:
@@ -340,68 +445,126 @@ static unsigned long exynos5_get_periph_rate(int peripheral)
 		sclk = exynos5_get_pll_clk(VPLL);
 		break;
 	default:
+		debug("%s: EXYNOS_SRC %d not supported\n", __func__, src);
 		return 0;
 	}
 
-	/* Ratio clock division for this peripheral */
-	sub_div = (div >> bit_info->div_bit) & 0xf;
-	sub_clk = sclk / (sub_div + 1);
-
-	/* Pre-ratio clock division for SDMMC0 and 2 */
-	if (peripheral == PERIPH_ID_SDMMC0 || peripheral == PERIPH_ID_SDMMC2) {
-		div = (div >> bit_info->prediv_bit) & 0xff;
-		return sub_clk / (div + 1);
-	}
+	/* Clock divider ratio for this peripheral */
+	if (bit_info->div_bit >= 0)
+		div = (div >> bit_info->div_bit) & bit_info->div_mask;
 
-	return sub_clk;
-}
+	/* Clock pre-divider ratio for this peripheral */
+	if (bit_info->prediv_bit >= 0)
+		sub_div = (sub_div >> bit_info->prediv_bit)
+			  & bit_info->prediv_mask;
 
-unsigned long clock_get_periph_rate(int peripheral)
-{
-	if (cpu_is_exynos5())
-		return exynos5_get_periph_rate(peripheral);
-	else
-		return 0;
+	/* Calculate and return required clock rate */
+	return (sclk / (div + 1)) / (sub_div + 1);
 }
 
-/* exynos5420: return pll clock frequency */
-static unsigned long exynos5420_get_pll_clk(int pllreg)
+static unsigned long exynos542x_get_periph_rate(int peripheral)
 {
+	struct clk_bit_info *bit_info = get_clk_bit_info(peripheral);
+	unsigned long sclk = 0;
+	unsigned int src = 0, div = 0, sub_div = 0;
 	struct exynos5420_clock *clk =
-		(struct exynos5420_clock *)samsung_get_base_clock();
-	unsigned long r, k = 0;
+			(struct exynos5420_clock *)samsung_get_base_clock();
 
-	switch (pllreg) {
-	case APLL:
-		r = readl(&clk->apll_con0);
+	switch (peripheral) {
+	case PERIPH_ID_UART0:
+	case PERIPH_ID_UART1:
+	case PERIPH_ID_UART2:
+	case PERIPH_ID_UART3:
+	case PERIPH_ID_PWM0:
+	case PERIPH_ID_PWM1:
+	case PERIPH_ID_PWM2:
+	case PERIPH_ID_PWM3:
+	case PERIPH_ID_PWM4:
+		src = readl(&clk->src_peric0);
+		div = readl(&clk->div_peric0);
 		break;
-	case MPLL:
-		r = readl(&clk->mpll_con0);
+	case PERIPH_ID_SPI0:
+	case PERIPH_ID_SPI1:
+	case PERIPH_ID_SPI2:
+		src = readl(&clk->src_peric1);
+		div = readl(&clk->div_peric1);
+		sub_div = readl(&clk->div_peric4);
 		break;
-	case EPLL:
-		r = readl(&clk->epll_con0);
-		k = readl(&clk->epll_con1);
+	case PERIPH_ID_SPI3:
+	case PERIPH_ID_SPI4:
+		src = readl(&clk->src_isp);
+		div = readl(&clk->div_isp1);
+		sub_div = readl(&clk->div_isp1);
 		break;
-	case VPLL:
-		r = readl(&clk->vpll_con0);
-		k = readl(&clk->vpll_con1);
+	case PERIPH_ID_SDMMC0:
+	case PERIPH_ID_SDMMC1:
+	case PERIPH_ID_SDMMC2:
+	case PERIPH_ID_SDMMC3:
+		src = readl(&clk->src_fsys);
+		div = readl(&clk->div_fsys1);
 		break;
-	case BPLL:
-		r = readl(&clk->bpll_con0);
+	case PERIPH_ID_I2C0:
+	case PERIPH_ID_I2C1:
+	case PERIPH_ID_I2C2:
+	case PERIPH_ID_I2C3:
+	case PERIPH_ID_I2C4:
+	case PERIPH_ID_I2C5:
+	case PERIPH_ID_I2C6:
+	case PERIPH_ID_I2C7:
+	case PERIPH_ID_I2C8:
+	case PERIPH_ID_I2C9:
+	case PERIPH_ID_I2C10:
+		src = EXYNOS542X_SRC_MPLL;
+		div = readl(&clk->div_top1);
 		break;
-	case RPLL:
-		r = readl(&clk->rpll_con0);
-		k = readl(&clk->rpll_con1);
+	default:
+		debug("%s: invalid peripheral %d", __func__, peripheral);
+		return -1;
+	};
+
+	if (bit_info->src_bit >= 0)
+		src = (src >> bit_info->src_bit) & bit_info->src_mask;
+
+	switch (src) {
+	case EXYNOS542X_SRC_MPLL:
+		sclk = exynos542x_get_pll_clk(MPLL);
 		break;
-	case SPLL:
-		r = readl(&clk->spll_con0);
+	case EXYNOS542X_SRC_SPLL:
+		sclk = exynos542x_get_pll_clk(SPLL);
+		break;
+	case EXYNOS542X_SRC_EPLL:
+		sclk = exynos542x_get_pll_clk(EPLL);
+		break;
+	case EXYNOS542X_SRC_RPLL:
+		sclk = exynos542x_get_pll_clk(RPLL);
 		break;
 	default:
-		printf("Unsupported PLL (%d)\n", pllreg);
+		debug("%s: EXYNOS542X_SRC %d not supported", __func__, src);
 		return 0;
 	}
 
-	return exynos_get_pll_clk(pllreg, r, k);
+	/* Clock divider ratio for this peripheral */
+	if (bit_info->div_bit >= 0)
+		div = (div >> bit_info->div_bit) & bit_info->div_mask;
+
+	/* Clock pre-divider ratio for this peripheral */
+	if (bit_info->prediv_bit >= 0)
+		sub_div = (sub_div >> bit_info->prediv_bit)
+			  & bit_info->prediv_mask;
+
+	/* Calculate and return required clock rate */
+	return (sclk / (div + 1)) / (sub_div + 1);
+}
+
+unsigned long clock_get_periph_rate(int peripheral)
+{
+	if (cpu_is_exynos5()) {
+		if (proid_is_exynos5420() || proid_is_exynos5800())
+			return exynos542x_get_periph_rate(peripheral);
+		return exynos5_get_periph_rate(peripheral);
+	} else {
+		return 0;
+	}
 }
 
 /* exynos4: return ARM clock frequency */
@@ -527,27 +690,6 @@ static unsigned long exynos4x12_get_pwm_clk(void)
 	return pclk;
 }
 
-/* exynos5420: return pwm clock frequency */
-static unsigned long exynos5420_get_pwm_clk(void)
-{
-	struct exynos5420_clock *clk =
-		(struct exynos5420_clock *)samsung_get_base_clock();
-	unsigned long pclk, sclk;
-	unsigned int ratio;
-
-	/*
-	 * CLK_DIV_PERIC0
-	 * PWM_RATIO [31:28]
-	 */
-	ratio = readl(&clk->div_peric0);
-	ratio = (ratio >> 28) & 0xf;
-	sclk = get_pll_clk(MPLL);
-
-	pclk = sclk / (ratio + 1);
-
-	return pclk;
-}
-
 /* exynos4: return uart clock frequency */
 static unsigned long exynos4_get_uart_clk(int dev_index)
 {
@@ -640,100 +782,6 @@ static unsigned long exynos4x12_get_uart_clk(int dev_index)
 	return uclk;
 }
 
-/* exynos5: return uart clock frequency */
-static unsigned long exynos5_get_uart_clk(int dev_index)
-{
-	struct exynos5_clock *clk =
-		(struct exynos5_clock *)samsung_get_base_clock();
-	unsigned long uclk, sclk;
-	unsigned int sel;
-	unsigned int ratio;
-
-	/*
-	 * CLK_SRC_PERIC0
-	 * UART0_SEL [3:0]
-	 * UART1_SEL [7:4]
-	 * UART2_SEL [8:11]
-	 * UART3_SEL [12:15]
-	 * UART4_SEL [16:19]
-	 * UART5_SEL [23:20]
-	 */
-	sel = readl(&clk->src_peric0);
-	sel = (sel >> (dev_index << 2)) & 0xf;
-
-	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_PERIC0
-	 * UART0_RATIO [3:0]
-	 * UART1_RATIO [7:4]
-	 * UART2_RATIO [8:11]
-	 * UART3_RATIO [12:15]
-	 * UART4_RATIO [16:19]
-	 * UART5_RATIO [23:20]
-	 */
-	ratio = readl(&clk->div_peric0);
-	ratio = (ratio >> (dev_index << 2)) & 0xf;
-
-	uclk = sclk / (ratio + 1);
-
-	return uclk;
-}
-
-/* exynos5420: return uart clock frequency */
-static unsigned long exynos5420_get_uart_clk(int dev_index)
-{
-	struct exynos5420_clock *clk =
-		(struct exynos5420_clock *)samsung_get_base_clock();
-	unsigned long uclk, sclk;
-	unsigned int sel;
-	unsigned int ratio;
-
-	/*
-	 * CLK_SRC_PERIC0
-	 * UART0_SEL [6:4]
-	 * UART1_SEL [10:8]
-	 * UART2_SEL [14:12]
-	 * UART3_SEL [18:16]
-	 * generalised calculation as follows
-	 * sel = (sel >> ((dev_index * 4) + 4)) & mask;
-	 */
-	sel = readl(&clk->src_peric0);
-	sel = (sel >> ((dev_index * 4) + 4)) & 0x7;
-
-	if (sel == 0x3)
-		sclk = get_pll_clk(MPLL);
-	else if (sel == 0x6)
-		sclk = get_pll_clk(EPLL);
-	else if (sel == 0x7)
-		sclk = get_pll_clk(RPLL);
-	else
-		return 0;
-
-	/*
-	 * CLK_DIV_PERIC0
-	 * UART0_RATIO [11:8]
-	 * UART1_RATIO [15:12]
-	 * UART2_RATIO [19:16]
-	 * UART3_RATIO [23:20]
-	 * generalised calculation as follows
-	 * ratio = (ratio >> ((dev_index * 4) + 8)) & mask;
-	 */
-	ratio = readl(&clk->div_peric0);
-	ratio = (ratio >> ((dev_index * 4) + 8)) & 0xf;
-
-	uclk = sclk / (ratio + 1);
-
-	return uclk;
-}
-
 static unsigned long exynos4_get_mmc_clk(int dev_index)
 {
 	struct exynos4_clock *clk =
@@ -783,94 +831,6 @@ static unsigned long exynos4_get_mmc_clk(int dev_index)
 	return uclk;
 }
 
-static unsigned long exynos5_get_mmc_clk(int dev_index)
-{
-	struct exynos5_clock *clk =
-		(struct exynos5_clock *)samsung_get_base_clock();
-	unsigned long uclk, sclk;
-	unsigned int sel, ratio, pre_ratio;
-	int shift = 0;
-
-	sel = readl(&clk->src_fsys);
-	sel = (sel >> (dev_index << 2)) & 0xf;
-
-	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;
-
-	switch (dev_index) {
-	case 0:
-	case 1:
-		ratio = readl(&clk->div_fsys1);
-		pre_ratio = readl(&clk->div_fsys1);
-		break;
-	case 2:
-	case 3:
-		ratio = readl(&clk->div_fsys2);
-		pre_ratio = readl(&clk->div_fsys2);
-		break;
-	default:
-		return 0;
-	}
-
-	if (dev_index == 1 || dev_index == 3)
-		shift = 16;
-
-	ratio = (ratio >> shift) & 0xf;
-	pre_ratio = (pre_ratio >> (shift + 8)) & 0xff;
-	uclk = (sclk / (ratio + 1)) / (pre_ratio + 1);
-
-	return uclk;
-}
-
-static unsigned long exynos5420_get_mmc_clk(int dev_index)
-{
-	struct exynos5420_clock *clk =
-		(struct exynos5420_clock *)samsung_get_base_clock();
-	unsigned long uclk, sclk;
-	unsigned int sel, ratio;
-
-	/*
-	 * CLK_SRC_FSYS
-	 * MMC0_SEL [10:8]
-	 * MMC1_SEL [14:12]
-	 * MMC2_SEL [18:16]
-	 * generalised calculation as follows
-	 * sel = (sel >> ((dev_index * 4) + 8)) & mask
-	 */
-	sel = readl(&clk->src_fsys);
-	sel = (sel >> ((dev_index * 4) + 8)) & 0x7;
-
-	if (sel == 0x3)
-		sclk = get_pll_clk(MPLL);
-	else if (sel == 0x4)
-		sclk = get_pll_clk(SPLL);
-	else if (sel == 0x6)
-		sclk = get_pll_clk(EPLL);
-	else
-		return 0;
-
-	/*
-	 * CLK_DIV_FSYS1
-	 * MMC0_RATIO [9:0]
-	 * MMC1_RATIO [19:10]
-	 * MMC2_RATIO [29:20]
-	 * generalised calculation as follows
-	 * ratio = (ratio >> (dev_index * 10)) & mask
-	 */
-	ratio = readl(&clk->div_fsys1);
-	ratio = (ratio >> (dev_index * 10)) & 0x3ff;
-
-	uclk = (sclk / (ratio + 1));
-
-	return uclk;
-}
-
 /* exynos4: set the mmc clock */
 static void exynos4_set_mmc_clk(int dev_index, unsigned int div)
 {
@@ -1249,29 +1209,6 @@ void exynos4_set_mipi_clk(void)
 	clrsetbits_le32(&clk->div_lcd0, 0xf << 16, 0x1 << 16);
 }
 
-/*
- * I2C
- *
- * exynos5: obtaining the I2C clock
- */
-static unsigned long exynos5_get_i2c_clk(void)
-{
-	struct exynos5_clock *clk =
-		(struct exynos5_clock *)samsung_get_base_clock();
-	unsigned long aclk_66, aclk_66_pre, sclk;
-	unsigned int ratio;
-
-	sclk = get_pll_clk(MPLL);
-
-	ratio = (readl(&clk->div_top1)) >> 24;
-	ratio &= 0x7;
-	aclk_66_pre = sclk / (ratio + 1);
-	ratio = readl(&clk->div_top0);
-	ratio &= 0x7;
-	aclk_66 = aclk_66_pre / (ratio + 1);
-	return aclk_66;
-}
-
 int exynos5_set_epll_clk(unsigned long rate)
 {
 	unsigned int epll_con, epll_con_k;
@@ -1585,7 +1522,7 @@ unsigned long get_pll_clk(int pllreg)
 {
 	if (cpu_is_exynos5()) {
 		if (proid_is_exynos5420() || proid_is_exynos5800())
-			return exynos5420_get_pll_clk(pllreg);
+			return exynos542x_get_pll_clk(pllreg);
 		return exynos5_get_pll_clk(pllreg);
 	} else {
 		if (proid_is_exynos4412())
@@ -1608,7 +1545,7 @@ unsigned long get_arm_clk(void)
 unsigned long get_i2c_clk(void)
 {
 	if (cpu_is_exynos5()) {
-		return exynos5_get_i2c_clk();
+		return clock_get_periph_rate(PERIPH_ID_I2C0);
 	} else if (cpu_is_exynos4()) {
 		return exynos4_get_i2c_clk();
 	} else {
@@ -1620,8 +1557,6 @@ unsigned long get_i2c_clk(void)
 unsigned long get_pwm_clk(void)
 {
 	if (cpu_is_exynos5()) {
-		if (proid_is_exynos5420() || proid_is_exynos5800())
-			return exynos5420_get_pwm_clk();
 		return clock_get_periph_rate(PERIPH_ID_PWM0);
 	} else {
 		if (proid_is_exynos4412())
@@ -1632,10 +1567,28 @@ unsigned long get_pwm_clk(void)
 
 unsigned long get_uart_clk(int dev_index)
 {
+	enum periph_id id;
+
+	switch (dev_index) {
+	case 0:
+		id = PERIPH_ID_UART0;
+		break;
+	case 1:
+		id = PERIPH_ID_UART1;
+		break;
+	case 2:
+		id = PERIPH_ID_UART2;
+		break;
+	case 3:
+		id = PERIPH_ID_UART3;
+		break;
+	default:
+		debug("%s: invalid UART index %d", __func__, dev_index);
+		return -1;
+	}
+
 	if (cpu_is_exynos5()) {
-		if (proid_is_exynos5420() || proid_is_exynos5800())
-			return exynos5420_get_uart_clk(dev_index);
-		return exynos5_get_uart_clk(dev_index);
+		return clock_get_periph_rate(id);
 	} else {
 		if (proid_is_exynos4412())
 			return exynos4x12_get_uart_clk(dev_index);
@@ -1645,10 +1598,28 @@ unsigned long get_uart_clk(int dev_index)
 
 unsigned long get_mmc_clk(int dev_index)
 {
+	enum periph_id id;
+
+	switch (dev_index) {
+	case 0:
+		id = PERIPH_ID_SDMMC0;
+		break;
+	case 1:
+		id = PERIPH_ID_SDMMC1;
+		break;
+	case 2:
+		id = PERIPH_ID_SDMMC2;
+		break;
+	case 3:
+		id = PERIPH_ID_SDMMC3;
+		break;
+	default:
+		debug("%s: invalid MMC index %d", __func__, dev_index);
+		return -1;
+	}
+
 	if (cpu_is_exynos5()) {
-		if (proid_is_exynos5420() || proid_is_exynos5800())
-			return exynos5420_get_mmc_clk(dev_index);
-		return exynos5_get_mmc_clk(dev_index);
+		return clock_get_periph_rate(id);
 	} else {
 		return exynos4_get_mmc_clk(dev_index);
 	}
@@ -1656,6 +1627,10 @@ unsigned long get_mmc_clk(int dev_index)
 
 void set_mmc_clk(int dev_index, unsigned int div)
 {
+	/* If want to set correct value, it needs to substract one from div.*/
+	if (div > 0)
+		div -= 1;
+
 	if (cpu_is_exynos5()) {
 		if (proid_is_exynos5420() || proid_is_exynos5800())
 			exynos5420_set_mmc_clk(dev_index, div);
diff --git a/arch/arm/cpu/armv7/exynos/power.c b/arch/arm/cpu/armv7/exynos/power.c
index 1520d642c5..1b12051656 100644
--- a/arch/arm/cpu/armv7/exynos/power.c
+++ b/arch/arm/cpu/armv7/exynos/power.c
@@ -102,10 +102,34 @@ static void exynos5_set_usbdrd_phy_ctrl(unsigned int enable)
 	}
 }
 
+static void exynos5420_set_usbdev_phy_ctrl(unsigned int enable)
+{
+	struct exynos5420_power *power =
+		(struct exynos5420_power *)samsung_get_base_power();
+
+	if (enable) {
+		/* Enabling USBDEV_PHY */
+		setbits_le32(&power->usbdev_phy_control,
+				POWER_USB_DRD_PHY_CTRL_EN);
+		setbits_le32(&power->usbdev1_phy_control,
+				POWER_USB_DRD_PHY_CTRL_EN);
+	} else {
+		/* Disabling USBDEV_PHY */
+		clrbits_le32(&power->usbdev_phy_control,
+				POWER_USB_DRD_PHY_CTRL_EN);
+		clrbits_le32(&power->usbdev1_phy_control,
+				POWER_USB_DRD_PHY_CTRL_EN);
+	}
+}
+
 void set_usbdrd_phy_ctrl(unsigned int enable)
 {
-	if (cpu_is_exynos5())
-		exynos5_set_usbdrd_phy_ctrl(enable);
+	if (cpu_is_exynos5()) {
+		if (proid_is_exynos5420() || proid_is_exynos5800())
+			exynos5420_set_usbdev_phy_ctrl(enable);
+		else
+			exynos5_set_usbdrd_phy_ctrl(enable);
+	}
 }
 
 static void exynos5_dp_phy_control(unsigned int enable)
diff --git a/arch/arm/dts/exynos4412-odroid.dts b/arch/arm/dts/exynos4412-odroid.dts
index 00a2917596..582f6e594b 100644
--- a/arch/arm/dts/exynos4412-odroid.dts
+++ b/arch/arm/dts/exynos4412-odroid.dts
@@ -85,4 +85,9 @@
 			reg = <0x125B0000 0x100>;
 		};
 	};
+
+	emmc-reset {
+		compatible = "samsung,emmc-reset";
+		reset-gpio = <&gpk1 2 0>;
+	};
 };
diff --git a/arch/arm/dts/exynos5422-odroidxu3.dts b/arch/arm/dts/exynos5422-odroidxu3.dts
index 8f4663733c..d0a8621fda 100644
--- a/arch/arm/dts/exynos5422-odroidxu3.dts
+++ b/arch/arm/dts/exynos5422-odroidxu3.dts
@@ -46,4 +46,9 @@
 	mmc@12220000 {
 		fifoth_val = <0x201f0020>;
 	};
+
+	emmc-reset {
+		compatible = "samsung,emmc-reset";
+		reset-gpio = <&gpd1 0 0>;
+	};
 };
diff --git a/arch/arm/include/asm/arch-exynos/clk.h b/arch/arm/include/asm/arch-exynos/clk.h
index db24dc0e89..2a17dfc6de 100644
--- a/arch/arm/include/asm/arch-exynos/clk.h
+++ b/arch/arm/include/asm/arch-exynos/clk.h
@@ -26,6 +26,10 @@ enum pll_src_bit {
 	EXYNOS_SRC_MPLL = 6,
 	EXYNOS_SRC_EPLL,
 	EXYNOS_SRC_VPLL,
+	EXYNOS542X_SRC_MPLL = 3,
+	EXYNOS542X_SRC_SPLL,
+	EXYNOS542X_SRC_EPLL = 6,
+	EXYNOS542X_SRC_RPLL,
 };
 
 unsigned long get_pll_clk(int pllreg);
diff --git a/board/samsung/common/board.c b/board/samsung/common/board.c
index 8b4c8e9a9d..da2245ff9d 100644
--- a/board/samsung/common/board.c
+++ b/board/samsung/common/board.c
@@ -355,3 +355,31 @@ int misc_init_r(void)
 	return 0;
 }
 #endif
+
+void reset_misc(void)
+{
+	struct gpio_desc gpio = {};
+	int node;
+
+	node = fdt_node_offset_by_compatible(gd->fdt_blob, 0,
+			"samsung,emmc-reset");
+	if (node < 0)
+		return;
+
+	gpio_request_by_name_nodev(gd->fdt_blob, node, "reset-gpio", 0, &gpio,
+				   GPIOD_IS_OUT);
+
+	if (dm_gpio_is_valid(&gpio)) {
+		/*
+		 * Reset eMMC
+		 *
+		 * FIXME: Need to optimize delay time. Minimum 1usec pulse is
+		 *	  required by 'JEDEC Standard No.84-A441' (eMMC)
+		 *	  document but real delay time is expected to greater
+		 *	  than 1usec.
+		 */
+		dm_gpio_set_value(&gpio, 0);
+		mdelay(10);
+		dm_gpio_set_value(&gpio, 1);
+	}
+}
diff --git a/board/samsung/odroid/odroid.c b/board/samsung/odroid/odroid.c
index e3517f2eb2..bff6ac928c 100644
--- a/board/samsung/odroid/odroid.c
+++ b/board/samsung/odroid/odroid.c
@@ -248,12 +248,12 @@ static void board_clock_init(void)
 	 * MOUTc2c = 800 Mhz
 	 * MOUTpwi = 108 MHz
 	 *
-	 * sclk_g2d_acp = MOUTg2d / (ratio + 1) = 400 (1)
+	 * sclk_g2d_acp = MOUTg2d / (ratio + 1) = 200 (3)
 	 * sclk_c2c = MOUTc2c / (ratio + 1) = 400 (1)
 	 * aclk_c2c = sclk_c2c / (ratio + 1) = 200 (1)
 	 * sclk_pwi = MOUTpwi / (ratio + 1) = 18 (5)
 	 */
-	set = G2D_ACP_RATIO(1) | C2C_RATIO(1) | PWI_RATIO(5) |
+	set = G2D_ACP_RATIO(3) | C2C_RATIO(1) | PWI_RATIO(5) |
 	      C2C_ACLK_RATIO(1) | DVSEM_RATIO(1) | DPM_RATIO(1);
 
 	clrsetbits_le32(&clk->div_dmc1, clr, set);
@@ -503,11 +503,3 @@ int board_usb_init(int index, enum usb_init_type init)
 	return s3c_udc_probe(&s5pc210_otg_data);
 }
 #endif
-
-void reset_misc(void)
-{
-	/* Reset eMMC*/
-	gpio_set_value(EXYNOS4X12_GPIO_K12, 0);
-	mdelay(10);
-	gpio_set_value(EXYNOS4X12_GPIO_K12, 1);
-}
diff --git a/doc/device-tree-bindings/exynos/emmc-reset.txt b/doc/device-tree-bindings/exynos/emmc-reset.txt
new file mode 100644
index 0000000000..5e7ba26c27
--- /dev/null
+++ b/doc/device-tree-bindings/exynos/emmc-reset.txt
@@ -0,0 +1,15 @@
+* Samsung eMMC reset
+
+Some exynos boards require special handling of nRESET_OUT line for eMMC memory
+to perform complete reboot.
+
+Required properties:
+- compatible: should be "samsung,emmc-reset"
+- reset-gpio: gpio chip for eMMC reset.
+
+Example:
+
+emmc-reset {
+        compatible = "samsung,emmc-reset";
+        reset-gpio = <&gpk1 2 0>;
+};