ARM: exynos: move SoC sources to mach-exynos

Move arch/arm/cpu/armv7/exynos/* to arch/arm/mach-exynos/* to allow
reuse of existing code for ARMv8 based Exynos platforms.

Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Tested-by: Przemyslaw Marczak <p.marczak@samsung.com>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

1 files changed, 1776 insertions, 0 deletions

diff --git a/arch/arm/mach-exynos/clock.c b/arch/arm/mach-exynos/clock.c
new file mode 100644
index 0000000000..1c6baa14b2
--- /dev/null
+++ b/arch/arm/mach-exynos/clock.c
@@ -0,0 +1,1776 @@
+/*
+ * Copyright (C) 2010 Samsung Electronics
+ * Minkyu Kang <mk7.kang@samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/clk.h>
+#include <asm/arch/periph.h>
+
+#define PLL_DIV_1024	1024
+#define PLL_DIV_65535	65535
+#define PLL_DIV_65536	65536
+/* *
+ * This structure is to store the src bit, div bit and prediv bit
+ * 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;
+};
+
+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 */
+static struct set_epll_con_val exynos5_epll_div[] = {
+	{ 192000000, 0, 48, 3, 1, 0 },
+	{ 180000000, 0, 45, 3, 1, 0 },
+	{  73728000, 1, 73, 3, 3, 47710 },
+	{  67737600, 1, 90, 4, 3, 20762 },
+	{  49152000, 0, 49, 3, 3, 9961 },
+	{  45158400, 0, 45, 3, 3, 10381 },
+	{ 180633600, 0, 45, 3, 1, 10381 }
+};
+
+/* exynos: return pll clock frequency */
+static int exynos_get_pll_clk(int pllreg, unsigned int r, unsigned int k)
+{
+	unsigned long m, p, s = 0, mask, fout;
+	unsigned int div;
+	unsigned int freq;
+	/*
+	 * APLL_CON: MIDV [25:16]
+	 * MPLL_CON: MIDV [25:16]
+	 * EPLL_CON: MIDV [24:16]
+	 * VPLL_CON: MIDV [24:16]
+	 * BPLL_CON: MIDV [25:16]: Exynos5
+	 */
+	if (pllreg == APLL || pllreg == MPLL || pllreg == BPLL ||
+	    pllreg == SPLL)
+		mask = 0x3ff;
+	else
+		mask = 0x1ff;
+
+	m = (r >> 16) & mask;
+
+	/* PDIV [13:8] */
+	p = (r >> 8) & 0x3f;
+	/* SDIV [2:0] */
+	s = r & 0x7;
+
+	freq = CONFIG_SYS_CLK_FREQ;
+
+	if (pllreg == EPLL || pllreg == RPLL) {
+		k = k & 0xffff;
+		/* FOUT = (MDIV + K / 65536) * FIN / (PDIV * 2^SDIV) */
+		fout = (m + k / PLL_DIV_65536) * (freq / (p * (1 << s)));
+	} else if (pllreg == VPLL) {
+		k = k & 0xfff;
+
+		/*
+		 * Exynos4210
+		 * FOUT = (MDIV + K / 1024) * FIN / (PDIV * 2^SDIV)
+		 *
+		 * Exynos4412
+		 * FOUT = (MDIV + K / 65535) * FIN / (PDIV * 2^SDIV)
+		 *
+		 * Exynos5250
+		 * FOUT = (MDIV + K / 65536) * FIN / (PDIV * 2^SDIV)
+		 */
+		if (proid_is_exynos4210())
+			div = PLL_DIV_1024;
+		else if (proid_is_exynos4412())
+			div = PLL_DIV_65535;
+		else if (proid_is_exynos5250() || proid_is_exynos5420()
+			 || proid_is_exynos5800())
+			div = PLL_DIV_65536;
+		else
+			return 0;
+
+		fout = (m + k / div) * (freq / (p * (1 << s)));
+	} else {
+		/*
+		 * Exynos4412 / Exynos5250
+		 * FOUT = MDIV * FIN / (PDIV * 2^SDIV)
+		 *
+		 * Exynos4210
+		 * FOUT = MDIV * FIN / (PDIV * 2^(SDIV-1))
+		 */
+		if (proid_is_exynos4210())
+			fout = m * (freq / (p * (1 << (s - 1))));
+		else
+			fout = m * (freq / (p * (1 << s)));
+	}
+	return fout;
+}
+
+/* exynos4: return pll clock frequency */
+static unsigned long exynos4_get_pll_clk(int pllreg)
+{
+	struct exynos4_clock *clk =
+		(struct exynos4_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;
+	default:
+		printf("Unsupported PLL (%d)\n", pllreg);
+		return 0;
+	}
+
+	return exynos_get_pll_clk(pllreg, r, k);
+}
+
+/* exynos4x12: return pll clock frequency */
+static unsigned long exynos4x12_get_pll_clk(int pllreg)
+{
+	struct exynos4x12_clock *clk =
+		(struct exynos4x12_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;
+	default:
+		printf("Unsupported PLL (%d)\n", pllreg);
+		return 0;
+	}
+
+	return exynos_get_pll_clk(pllreg, r, k);
+}
+
+/* exynos5: return pll clock frequency */
+static unsigned long exynos5_get_pll_clk(int pllreg)
+{
+	struct exynos5_clock *clk =
+		(struct exynos5_clock *)samsung_get_base_clock();
+	unsigned long r, k = 0, fout;
+	unsigned int pll_div2_sel, fout_sel;
+
+	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;
+	default:
+		printf("Unsupported PLL (%d)\n", pllreg);
+		return 0;
+	}
+
+	fout = exynos_get_pll_clk(pllreg, r, k);
+
+	/* According to the user manual, in EVT1 MPLL and BPLL always gives
+	 * 1.6GHz clock, so divide by 2 to get 800MHz MPLL clock.*/
+	if (pllreg == MPLL || pllreg == BPLL) {
+		pll_div2_sel = readl(&clk->pll_div2_sel);
+
+		switch (pllreg) {
+		case MPLL:
+			fout_sel = (pll_div2_sel >> MPLL_FOUT_SEL_SHIFT)
+					& MPLL_FOUT_SEL_MASK;
+			break;
+		case BPLL:
+			fout_sel = (pll_div2_sel >> BPLL_FOUT_SEL_SHIFT)
+					& BPLL_FOUT_SEL_MASK;
+			break;
+		default:
+			fout_sel = -1;
+			break;
+		}
+
+		if (fout_sel == 0)
+			fout /= 2;
+	}
+
+	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 = 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();
+
+	switch (peripheral) {
+	case PERIPH_ID_UART0:
+	case PERIPH_ID_UART1:
+	case PERIPH_ID_UART2:
+	case PERIPH_ID_UART3:
+		src = readl(&clk->src_peric0);
+		div = readl(&clk->div_peric0);
+		break;
+	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_peric3);
+		break;
+	case PERIPH_ID_I2S0:
+		src = readl(&clk->src_mau);
+		div = sub_div = readl(&clk->div_mau);
+	case PERIPH_ID_SPI0:
+	case PERIPH_ID_SPI1:
+		src = readl(&clk->src_peric1);
+		div = sub_div = readl(&clk->div_peric1);
+		break;
+	case PERIPH_ID_SPI2:
+		src = readl(&clk->src_peric1);
+		div = sub_div = readl(&clk->div_peric2);
+		break;
+	case PERIPH_ID_SPI3:
+	case PERIPH_ID_SPI4:
+		src = readl(&clk->sclk_src_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 = sub_div = readl(&clk->div_fsys2);
+		break;
+	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:
+		src = EXYNOS_SRC_MPLL;
+		div = readl(&clk->div_top1);
+		sub_div = readl(&clk->div_top0);
+		break;
+	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 EXYNOS_SRC_MPLL:
+		sclk = exynos5_get_pll_clk(MPLL);
+		break;
+	case EXYNOS_SRC_EPLL:
+		sclk = exynos5_get_pll_clk(EPLL);
+		break;
+	case EXYNOS_SRC_VPLL:
+		sclk = exynos5_get_pll_clk(VPLL);
+		break;
+	default:
+		debug("%s: EXYNOS_SRC %d not supported\n", __func__, src);
+		return 0;
+	}
+
+	/* 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);
+}
+
+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();
+
+	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 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 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 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 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;
+	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 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:
+		debug("%s: EXYNOS542X_SRC %d not supported", __func__, src);
+		return 0;
+	}
+
+	/* 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 */
+static unsigned long exynos4_get_arm_clk(void)
+{
+	struct exynos4_clock *clk =
+		(struct exynos4_clock *)samsung_get_base_clock();
+	unsigned long div;
+	unsigned long armclk;
+	unsigned int core_ratio;
+	unsigned int core2_ratio;
+
+	div = readl(&clk->div_cpu0);
+
+	/* CORE_RATIO: [2:0], CORE2_RATIO: [30:28] */
+	core_ratio = (div >> 0) & 0x7;
+	core2_ratio = (div >> 28) & 0x7;
+
+	armclk = get_pll_clk(APLL) / (core_ratio + 1);
+	armclk /= (core2_ratio + 1);
+
+	return armclk;
+}
+
+/* exynos4x12: return ARM clock frequency */
+static unsigned long exynos4x12_get_arm_clk(void)
+{
+	struct exynos4x12_clock *clk =
+		(struct exynos4x12_clock *)samsung_get_base_clock();
+	unsigned long div;
+	unsigned long armclk;
+	unsigned int core_ratio;
+	unsigned int core2_ratio;
+
+	div = readl(&clk->div_cpu0);
+
+	/* CORE_RATIO: [2:0], CORE2_RATIO: [30:28] */
+	core_ratio = (div >> 0) & 0x7;
+	core2_ratio = (div >> 28) & 0x7;
+
+	armclk = get_pll_clk(APLL) / (core_ratio + 1);
+	armclk /= (core2_ratio + 1);
+
+	return armclk;
+}
+
+/* exynos5: return ARM clock frequency */
+static unsigned long exynos5_get_arm_clk(void)
+{
+	struct exynos5_clock *clk =
+		(struct exynos5_clock *)samsung_get_base_clock();
+	unsigned long div;
+	unsigned long armclk;
+	unsigned int arm_ratio;
+	unsigned int arm2_ratio;
+
+	div = readl(&clk->div_cpu0);
+
+	/* ARM_RATIO: [2:0], ARM2_RATIO: [30:28] */
+	arm_ratio = (div >> 0) & 0x7;
+	arm2_ratio = (div >> 28) & 0x7;
+
+	armclk = get_pll_clk(APLL) / (arm_ratio + 1);
+	armclk /= (arm2_ratio + 1);
+
+	return armclk;
+}
+
+/* exynos4: return pwm clock frequency */
+static unsigned long exynos4_get_pwm_clk(void)
+{
+	struct exynos4_clock *clk =
+		(struct exynos4_clock *)samsung_get_base_clock();
+	unsigned long pclk, sclk;
+	unsigned int sel;
+	unsigned int ratio;
+
+	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)
+			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);
+		ratio = 8;
+	} else
+		return 0;
+
+	pclk = sclk / (ratio + 1);
+
+	return pclk;
+}
+
+/* exynos4x12: return pwm clock frequency */
+static unsigned long exynos4x12_get_pwm_clk(void)
+{
+	unsigned long pclk, sclk;
+	unsigned int ratio;
+
+	sclk = get_pll_clk(MPLL);
+	ratio = 8;
+
+	pclk = sclk / (ratio + 1);
+
+	return pclk;
+}
+
+/* exynos4: return uart clock frequency */
+static unsigned long exynos4_get_uart_clk(int dev_index)
+{
+	struct exynos4_clock *clk =
+		(struct exynos4_clock *)samsung_get_base_clock();
+	unsigned long uclk, sclk;
+	unsigned int sel;
+	unsigned int ratio;
+
+	/*
+	 * CLK_SRC_PERIL0
+	 * 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_peril0);
+	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_PERIL0
+	 * 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_peril0);
+	ratio = (ratio >> (dev_index << 2)) & 0xf;
+
+	uclk = sclk / (ratio + 1);
+
+	return uclk;
+}
+
+/* exynos4x12: return uart clock frequency */
+static unsigned long exynos4x12_get_uart_clk(int dev_index)
+{
+	struct exynos4x12_clock *clk =
+		(struct exynos4x12_clock *)samsung_get_base_clock();
+	unsigned long uclk, sclk;
+	unsigned int sel;
+	unsigned int ratio;
+
+	/*
+	 * CLK_SRC_PERIL0
+	 * UART0_SEL [3:0]
+	 * UART1_SEL [7:4]
+	 * UART2_SEL [8:11]
+	 * UART3_SEL [12:15]
+	 * UART4_SEL [16:19]
+	 */
+	sel = readl(&clk->src_peril0);
+	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_PERIL0
+	 * UART0_RATIO [3:0]
+	 * UART1_RATIO [7:4]
+	 * UART2_RATIO [8:11]
+	 * UART3_RATIO [12:15]
+	 * UART4_RATIO [16:19]
+	 */
+	ratio = readl(&clk->div_peril0);
+	ratio = (ratio >> (dev_index << 2)) & 0xf;
+
+	uclk = sclk / (ratio + 1);
+
+	return uclk;
+}
+
+static unsigned long exynos4_get_mmc_clk(int dev_index)
+{
+	struct exynos4_clock *clk =
+		(struct exynos4_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;
+	case 4:
+		ratio = readl(&clk->div_fsys3);
+		pre_ratio = readl(&clk->div_fsys3);
+		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;
+}
+
+/* exynos4: set the mmc clock */
+static void exynos4_set_mmc_clk(int dev_index, unsigned int div)
+{
+	struct exynos4_clock *clk =
+		(struct exynos4_clock *)samsung_get_base_clock();
+	unsigned int addr, clear_bit, set_bit;
+
+	/*
+	 * 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]
+	 * CLK_DIV_FSYS3
+	 * MMC4_RATIO [3:0]
+	 */
+	if (dev_index < 2) {
+		addr = (unsigned int)&clk->div_fsys1;
+		clear_bit = MASK_PRE_RATIO(dev_index);
+		set_bit = SET_PRE_RATIO(dev_index, div);
+	} else if (dev_index == 4) {
+		addr = (unsigned int)&clk->div_fsys3;
+		dev_index -= 4;
+		/* MMC4 is controlled with the MMC4_RATIO value */
+		clear_bit = MASK_RATIO(dev_index);
+		set_bit = SET_RATIO(dev_index, div);
+	} else {
+		addr = (unsigned int)&clk->div_fsys2;
+		dev_index -= 2;
+		clear_bit = MASK_PRE_RATIO(dev_index);
+		set_bit = SET_PRE_RATIO(dev_index, div);
+	}
+
+	clrsetbits_le32(addr, clear_bit, set_bit);
+}
+
+/* exynos5: set the mmc clock */
+static void exynos5_set_mmc_clk(int dev_index, unsigned int div)
+{
+	struct exynos5_clock *clk =
+		(struct exynos5_clock *)samsung_get_base_clock();
+	unsigned int addr;
+
+	/*
+	 * 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;
+	}
+
+	clrsetbits_le32(addr, 0xff << ((dev_index << 4) + 8),
+			(div & 0xff) << ((dev_index << 4) + 8));
+}
+
+/* exynos5: set the mmc clock */
+static void exynos5420_set_mmc_clk(int dev_index, unsigned int div)
+{
+	struct exynos5420_clock *clk =
+		(struct exynos5420_clock *)samsung_get_base_clock();
+	unsigned int addr;
+	unsigned int shift;
+
+	/*
+	 * CLK_DIV_FSYS1
+	 * MMC0_RATIO [9:0]
+	 * MMC1_RATIO [19:10]
+	 * MMC2_RATIO [29:20]
+	 */
+	addr = (unsigned int)&clk->div_fsys1;
+	shift = dev_index * 10;
+
+	clrsetbits_le32(addr, 0x3ff << shift, (div & 0x3ff) << shift);
+}
+
+/* get_lcd_clk: return lcd clock frequency */
+static unsigned long exynos4_get_lcd_clk(void)
+{
+	struct exynos4_clock *clk =
+		(struct exynos4_clock *)samsung_get_base_clock();
+	unsigned long pclk, sclk;
+	unsigned int sel;
+	unsigned int ratio;
+
+	/*
+	 * CLK_SRC_LCD0
+	 * FIMD0_SEL [3:0]
+	 */
+	sel = readl(&clk->src_lcd0);
+	sel = sel & 0xf;
+
+	/*
+	 * 0x6: SCLK_MPLL
+	 * 0x7: SCLK_EPLL
+	 * 0x8: SCLK_VPLL
+	 */
+	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_LCD0
+	 * FIMD0_RATIO [3:0]
+	 */
+	ratio = readl(&clk->div_lcd0);
+	ratio = ratio & 0xf;
+
+	pclk = sclk / (ratio + 1);
+
+	return pclk;
+}
+
+/* get_lcd_clk: return lcd clock frequency */
+static unsigned long exynos5_get_lcd_clk(void)
+{
+	struct exynos5_clock *clk =
+		(struct exynos5_clock *)samsung_get_base_clock();
+	unsigned long pclk, sclk;
+	unsigned int sel;
+	unsigned int ratio;
+
+	/*
+	 * CLK_SRC_LCD0
+	 * FIMD0_SEL [3:0]
+	 */
+	sel = readl(&clk->src_disp1_0);
+	sel = sel & 0xf;
+
+	/*
+	 * 0x6: SCLK_MPLL
+	 * 0x7: SCLK_EPLL
+	 * 0x8: SCLK_VPLL
+	 */
+	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_LCD0
+	 * FIMD0_RATIO [3:0]
+	 */
+	ratio = readl(&clk->div_disp1_0);
+	ratio = ratio & 0xf;
+
+	pclk = sclk / (ratio + 1);
+
+	return pclk;
+}
+
+static unsigned long exynos5420_get_lcd_clk(void)
+{
+	struct exynos5420_clock *clk =
+		(struct exynos5420_clock *)samsung_get_base_clock();
+	unsigned long pclk, sclk;
+	unsigned int sel;
+	unsigned int ratio;
+
+	/*
+	 * CLK_SRC_DISP10
+	 * FIMD1_SEL [4]
+	 * 0: SCLK_RPLL
+	 * 1: SCLK_SPLL
+	 */
+	sel = readl(&clk->src_disp10);
+	sel &= (1 << 4);
+
+	if (sel)
+		sclk = get_pll_clk(SPLL);
+	else
+		sclk = get_pll_clk(RPLL);
+
+	/*
+	 * CLK_DIV_DISP10
+	 * FIMD1_RATIO [3:0]
+	 */
+	ratio = readl(&clk->div_disp10);
+	ratio = ratio & 0xf;
+
+	pclk = sclk / (ratio + 1);
+
+	return pclk;
+}
+
+static unsigned long exynos5800_get_lcd_clk(void)
+{
+	struct exynos5420_clock *clk =
+		(struct exynos5420_clock *)samsung_get_base_clock();
+	unsigned long sclk;
+	unsigned int sel;
+	unsigned int ratio;
+
+	/*
+	 * CLK_SRC_DISP10
+	 * CLKMUX_FIMD1 [6:4]
+	 */
+	sel = (readl(&clk->src_disp10) >> 4) & 0x7;
+
+	if (sel) {
+		/*
+		 * Mapping of CLK_SRC_DISP10 CLKMUX_FIMD1 [6:4] values into
+		 * PLLs. The first element is a placeholder to bypass the
+		 * default settig.
+		 */
+		const int reg_map[] = {0, CPLL, DPLL, MPLL, SPLL, IPLL, EPLL,
+									RPLL};
+		sclk = get_pll_clk(reg_map[sel]);
+	} else
+		sclk = CONFIG_SYS_CLK_FREQ;
+	/*
+	 * CLK_DIV_DISP10
+	 * FIMD1_RATIO [3:0]
+	 */
+	ratio = readl(&clk->div_disp10) & 0xf;
+
+	return sclk / (ratio + 1);
+}
+
+void exynos4_set_lcd_clk(void)
+{
+	struct exynos4_clock *clk =
+	    (struct exynos4_clock *)samsung_get_base_clock();
+
+	/*
+	 * CLK_GATE_BLOCK
+	 * CLK_CAM	[0]
+	 * CLK_TV	[1]
+	 * CLK_MFC	[2]
+	 * CLK_G3D	[3]
+	 * CLK_LCD0	[4]
+	 * CLK_LCD1	[5]
+	 * CLK_GPS	[7]
+	 */
+	setbits_le32(&clk->gate_block, 1 << 4);
+
+	/*
+	 * CLK_SRC_LCD0
+	 * FIMD0_SEL		[3:0]
+	 * MDNIE0_SEL		[7:4]
+	 * MDNIE_PWM0_SEL	[8:11]
+	 * MIPI0_SEL		[12:15]
+	 * set lcd0 src clock 0x6: SCLK_MPLL
+	 */
+	clrsetbits_le32(&clk->src_lcd0, 0xf, 0x6);
+
+	/*
+	 * CLK_GATE_IP_LCD0
+	 * CLK_FIMD0		[0]
+	 * CLK_MIE0		[1]
+	 * CLK_MDNIE0		[2]
+	 * CLK_DSIM0		[3]
+	 * CLK_SMMUFIMD0	[4]
+	 * CLK_PPMULCD0		[5]
+	 * Gating all clocks for FIMD0
+	 */
+	setbits_le32(&clk->gate_ip_lcd0, 1 << 0);
+
+	/*
+	 * CLK_DIV_LCD0
+	 * FIMD0_RATIO		[3:0]
+	 * MDNIE0_RATIO		[7:4]
+	 * MDNIE_PWM0_RATIO	[11:8]
+	 * MDNIE_PWM_PRE_RATIO	[15:12]
+	 * MIPI0_RATIO		[19:16]
+	 * MIPI0_PRE_RATIO	[23:20]
+	 * set fimd ratio
+	 */
+	clrsetbits_le32(&clk->div_lcd0, 0xf, 0x1);
+}
+
+void exynos5_set_lcd_clk(void)
+{
+	struct exynos5_clock *clk =
+	    (struct exynos5_clock *)samsung_get_base_clock();
+
+	/*
+	 * CLK_GATE_BLOCK
+	 * CLK_CAM	[0]
+	 * CLK_TV	[1]
+	 * CLK_MFC	[2]
+	 * CLK_G3D	[3]
+	 * CLK_LCD0	[4]
+	 * CLK_LCD1	[5]
+	 * CLK_GPS	[7]
+	 */
+	setbits_le32(&clk->gate_block, 1 << 4);
+
+	/*
+	 * CLK_SRC_LCD0
+	 * FIMD0_SEL		[3:0]
+	 * MDNIE0_SEL		[7:4]
+	 * MDNIE_PWM0_SEL	[8:11]
+	 * MIPI0_SEL		[12:15]
+	 * set lcd0 src clock 0x6: SCLK_MPLL
+	 */
+	clrsetbits_le32(&clk->src_disp1_0, 0xf, 0x6);
+
+	/*
+	 * CLK_GATE_IP_LCD0
+	 * CLK_FIMD0		[0]
+	 * CLK_MIE0		[1]
+	 * CLK_MDNIE0		[2]
+	 * CLK_DSIM0		[3]
+	 * CLK_SMMUFIMD0	[4]
+	 * CLK_PPMULCD0		[5]
+	 * Gating all clocks for FIMD0
+	 */
+	setbits_le32(&clk->gate_ip_disp1, 1 << 0);
+
+	/*
+	 * CLK_DIV_LCD0
+	 * FIMD0_RATIO		[3:0]
+	 * MDNIE0_RATIO		[7:4]
+	 * MDNIE_PWM0_RATIO	[11:8]
+	 * MDNIE_PWM_PRE_RATIO	[15:12]
+	 * MIPI0_RATIO		[19:16]
+	 * MIPI0_PRE_RATIO	[23:20]
+	 * set fimd ratio
+	 */
+	clrsetbits_le32(&clk->div_disp1_0, 0xf, 0x0);
+}
+
+void exynos5420_set_lcd_clk(void)
+{
+	struct exynos5420_clock *clk =
+		(struct exynos5420_clock *)samsung_get_base_clock();
+	unsigned int cfg;
+
+	/*
+	 * CLK_SRC_DISP10
+	 * FIMD1_SEL [4]
+	 * 0: SCLK_RPLL
+	 * 1: SCLK_SPLL
+	 */
+	cfg = readl(&clk->src_disp10);
+	cfg &= ~(0x1 << 4);
+	cfg |= (0 << 4);
+	writel(cfg, &clk->src_disp10);
+
+	/*
+	 * CLK_DIV_DISP10
+	 * FIMD1_RATIO		[3:0]
+	 */
+	cfg = readl(&clk->div_disp10);
+	cfg &= ~(0xf << 0);
+	cfg |= (0 << 0);
+	writel(cfg, &clk->div_disp10);
+}
+
+void exynos5800_set_lcd_clk(void)
+{
+	struct exynos5420_clock *clk =
+		(struct exynos5420_clock *)samsung_get_base_clock();
+	unsigned int cfg;
+
+	/*
+	 * Use RPLL for pixel clock
+	 * CLK_SRC_DISP10 CLKMUX_FIMD1 [6:4]
+	 * ==================
+	 * 111: SCLK_RPLL
+	 */
+	cfg = readl(&clk->src_disp10) | (0x7 << 4);
+	writel(cfg, &clk->src_disp10);
+
+	/*
+	 * CLK_DIV_DISP10
+	 * FIMD1_RATIO		[3:0]
+	 */
+	clrsetbits_le32(&clk->div_disp10, 0xf << 0, 0x0 << 0);
+}
+
+void exynos4_set_mipi_clk(void)
+{
+	struct exynos4_clock *clk =
+	    (struct exynos4_clock *)samsung_get_base_clock();
+
+	/*
+	 * CLK_SRC_LCD0
+	 * FIMD0_SEL		[3:0]
+	 * MDNIE0_SEL		[7:4]
+	 * MDNIE_PWM0_SEL	[8:11]
+	 * MIPI0_SEL		[12:15]
+	 * set mipi0 src clock 0x6: SCLK_MPLL
+	 */
+	clrsetbits_le32(&clk->src_lcd0, 0xf << 12, 0x6 << 12);
+
+	/*
+	 * CLK_SRC_MASK_LCD0
+	 * FIMD0_MASK		[0]
+	 * MDNIE0_MASK		[4]
+	 * MDNIE_PWM0_MASK	[8]
+	 * MIPI0_MASK		[12]
+	 * set src mask mipi0 0x1: Unmask
+	 */
+	setbits_le32(&clk->src_mask_lcd0, 0x1 << 12);
+
+	/*
+	 * CLK_GATE_IP_LCD0
+	 * CLK_FIMD0		[0]
+	 * CLK_MIE0		[1]
+	 * CLK_MDNIE0		[2]
+	 * CLK_DSIM0		[3]
+	 * CLK_SMMUFIMD0	[4]
+	 * CLK_PPMULCD0		[5]
+	 * Gating all clocks for MIPI0
+	 */
+	setbits_le32(&clk->gate_ip_lcd0, 1 << 3);
+
+	/*
+	 * CLK_DIV_LCD0
+	 * FIMD0_RATIO		[3:0]
+	 * MDNIE0_RATIO		[7:4]
+	 * MDNIE_PWM0_RATIO	[11:8]
+	 * MDNIE_PWM_PRE_RATIO	[15:12]
+	 * MIPI0_RATIO		[19:16]
+	 * MIPI0_PRE_RATIO	[23:20]
+	 * set mipi ratio
+	 */
+	clrsetbits_le32(&clk->div_lcd0, 0xf << 16, 0x1 << 16);
+}
+
+int exynos5_set_epll_clk(unsigned long rate)
+{
+	unsigned int epll_con, epll_con_k;
+	unsigned int i;
+	unsigned int lockcnt;
+	unsigned int start;
+	struct exynos5_clock *clk =
+		(struct exynos5_clock *)samsung_get_base_clock();
+
+	epll_con = readl(&clk->epll_con0);
+	epll_con &= ~((EPLL_CON0_LOCK_DET_EN_MASK <<
+			EPLL_CON0_LOCK_DET_EN_SHIFT) |
+		EPLL_CON0_MDIV_MASK << EPLL_CON0_MDIV_SHIFT |
+		EPLL_CON0_PDIV_MASK << EPLL_CON0_PDIV_SHIFT |
+		EPLL_CON0_SDIV_MASK << EPLL_CON0_SDIV_SHIFT);
+
+	for (i = 0; i < ARRAY_SIZE(exynos5_epll_div); i++) {
+		if (exynos5_epll_div[i].freq_out == rate)
+			break;
+	}
+
+	if (i == ARRAY_SIZE(exynos5_epll_div))
+		return -1;
+
+	epll_con_k = exynos5_epll_div[i].k_dsm << 0;
+	epll_con |= exynos5_epll_div[i].en_lock_det <<
+				EPLL_CON0_LOCK_DET_EN_SHIFT;
+	epll_con |= exynos5_epll_div[i].m_div << EPLL_CON0_MDIV_SHIFT;
+	epll_con |= exynos5_epll_div[i].p_div << EPLL_CON0_PDIV_SHIFT;
+	epll_con |= exynos5_epll_div[i].s_div << EPLL_CON0_SDIV_SHIFT;
+
+	/*
+	 * Required period ( in cycles) to genarate a stable clock output.
+	 * The maximum clock time can be up to 3000 * PDIV cycles of PLLs
+	 * frequency input (as per spec)
+	 */
+	lockcnt = 3000 * exynos5_epll_div[i].p_div;
+
+	writel(lockcnt, &clk->epll_lock);
+	writel(epll_con, &clk->epll_con0);
+	writel(epll_con_k, &clk->epll_con1);
+
+	start = get_timer(0);
+
+	 while (!(readl(&clk->epll_con0) &
+			(0x1 << EXYNOS5_EPLLCON0_LOCKED_SHIFT))) {
+		if (get_timer(start) > TIMEOUT_EPLL_LOCK) {
+			debug("%s: Timeout waiting for EPLL lock\n", __func__);
+			return -1;
+		}
+	}
+	return 0;
+}
+
+int exynos5_set_i2s_clk_source(unsigned int i2s_id)
+{
+	struct exynos5_clock *clk =
+		(struct exynos5_clock *)samsung_get_base_clock();
+	unsigned int *audio_ass = (unsigned int *)samsung_get_base_audio_ass();
+
+	if (i2s_id == 0) {
+		setbits_le32(&clk->src_top2, CLK_SRC_MOUT_EPLL);
+		clrsetbits_le32(&clk->src_mau, AUDIO0_SEL_MASK,
+				(CLK_SRC_SCLK_EPLL));
+		setbits_le32(audio_ass, AUDIO_CLKMUX_ASS);
+	} else if (i2s_id == 1) {
+		clrsetbits_le32(&clk->src_peric1, AUDIO1_SEL_MASK,
+				(CLK_SRC_SCLK_EPLL));
+	} else {
+		return -1;
+	}
+	return 0;
+}
+
+int exynos5_set_i2s_clk_prescaler(unsigned int src_frq,
+				  unsigned int dst_frq,
+				  unsigned int i2s_id)
+{
+	struct exynos5_clock *clk =
+		(struct exynos5_clock *)samsung_get_base_clock();
+	unsigned int div;
+
+	if ((dst_frq == 0) || (src_frq == 0)) {
+		debug("%s: Invalid requency input for prescaler\n", __func__);
+		debug("src frq = %d des frq = %d ", src_frq, dst_frq);
+		return -1;
+	}
+
+	div = (src_frq / dst_frq);
+	if (i2s_id == 0) {
+		if (div > AUDIO_0_RATIO_MASK) {
+			debug("%s: Frequency ratio is out of range\n",
+			      __func__);
+			debug("src frq = %d des frq = %d ", src_frq, dst_frq);
+			return -1;
+		}
+		clrsetbits_le32(&clk->div_mau, AUDIO_0_RATIO_MASK,
+				(div & AUDIO_0_RATIO_MASK));
+	} else if (i2s_id == 1) {
+		if (div > AUDIO_1_RATIO_MASK) {
+			debug("%s: Frequency ratio is out of range\n",
+			      __func__);
+			debug("src frq = %d des frq = %d ", src_frq, dst_frq);
+			return -1;
+		}
+		clrsetbits_le32(&clk->div_peric4, AUDIO_1_RATIO_MASK,
+				(div & AUDIO_1_RATIO_MASK));
+	} else {
+		return -1;
+	}
+	return 0;
+}
+
+/**
+ * Linearly searches for the most accurate main and fine stage clock scalars
+ * (divisors) for a specified target frequency and scalar bit sizes by checking
+ * all multiples of main_scalar_bits values. Will always return scalars up to or
+ * slower than target.
+ *
+ * @param main_scalar_bits	Number of main scalar bits, must be > 0 and < 32
+ * @param fine_scalar_bits	Number of fine scalar bits, must be > 0 and < 32
+ * @param input_freq		Clock frequency to be scaled in Hz
+ * @param target_freq		Desired clock frequency in Hz
+ * @param best_fine_scalar	Pointer to store the fine stage divisor
+ *
+ * @return best_main_scalar	Main scalar for desired frequency or -1 if none
+ * found
+ */
+static int clock_calc_best_scalar(unsigned int main_scaler_bits,
+	unsigned int fine_scalar_bits, unsigned int input_rate,
+	unsigned int target_rate, unsigned int *best_fine_scalar)
+{
+	int i;
+	int best_main_scalar = -1;
+	unsigned int best_error = target_rate;
+	const unsigned int cap = (1 << fine_scalar_bits) - 1;
+	const unsigned int loops = 1 << main_scaler_bits;
+
+	debug("Input Rate is %u, Target is %u, Cap is %u\n", input_rate,
+			target_rate, cap);
+
+	assert(best_fine_scalar != NULL);
+	assert(main_scaler_bits <= fine_scalar_bits);
+
+	*best_fine_scalar = 1;
+
+	if (input_rate == 0 || target_rate == 0)
+		return -1;
+
+	if (target_rate >= input_rate)
+		return 1;
+
+	for (i = 1; i <= loops; i++) {
+		const unsigned int effective_div =
+			max(min(input_rate / i / target_rate, cap), 1U);
+		const unsigned int effective_rate = input_rate / i /
+							effective_div;
+		const int error = target_rate - effective_rate;
+
+		debug("%d|effdiv:%u, effrate:%u, error:%d\n", i, effective_div,
+				effective_rate, error);
+
+		if (error >= 0 && error <= best_error) {
+			best_error = error;
+			best_main_scalar = i;
+			*best_fine_scalar = effective_div;
+		}
+	}
+
+	return best_main_scalar;
+}
+
+static int exynos5_set_spi_clk(enum periph_id periph_id,
+					unsigned int rate)
+{
+	struct exynos5_clock *clk =
+		(struct exynos5_clock *)samsung_get_base_clock();
+	int main;
+	unsigned int fine;
+	unsigned shift, pre_shift;
+	unsigned mask = 0xff;
+	u32 *reg;
+
+	main = clock_calc_best_scalar(4, 8, 400000000, rate, &fine);
+	if (main < 0) {
+		debug("%s: Cannot set clock rate for periph %d",
+				__func__, periph_id);
+		return -1;
+	}
+	main = main - 1;
+	fine = fine - 1;
+
+	switch (periph_id) {
+	case PERIPH_ID_SPI0:
+		reg = &clk->div_peric1;
+		shift = 0;
+		pre_shift = 8;
+		break;
+	case PERIPH_ID_SPI1:
+		reg = &clk->div_peric1;
+		shift = 16;
+		pre_shift = 24;
+		break;
+	case PERIPH_ID_SPI2:
+		reg = &clk->div_peric2;
+		shift = 0;
+		pre_shift = 8;
+		break;
+	case PERIPH_ID_SPI3:
+		reg = &clk->sclk_div_isp;
+		shift = 0;
+		pre_shift = 4;
+		break;
+	case PERIPH_ID_SPI4:
+		reg = &clk->sclk_div_isp;
+		shift = 12;
+		pre_shift = 16;
+		break;
+	default:
+		debug("%s: Unsupported peripheral ID %d\n", __func__,
+		      periph_id);
+		return -1;
+	}
+	clrsetbits_le32(reg, mask << shift, (main & mask) << shift);
+	clrsetbits_le32(reg, mask << pre_shift, (fine & mask) << pre_shift);
+
+	return 0;
+}
+
+static int exynos5420_set_spi_clk(enum periph_id periph_id,
+					unsigned int rate)
+{
+	struct exynos5420_clock *clk =
+		(struct exynos5420_clock *)samsung_get_base_clock();
+	int main;
+	unsigned int fine;
+	unsigned shift, pre_shift;
+	unsigned div_mask = 0xf, pre_div_mask = 0xff;
+	u32 *reg;
+	u32 *pre_reg;
+
+	main = clock_calc_best_scalar(4, 8, 400000000, rate, &fine);
+	if (main < 0) {
+		debug("%s: Cannot set clock rate for periph %d",
+		      __func__, periph_id);
+		return -1;
+	}
+	main = main - 1;
+	fine = fine - 1;
+
+	switch (periph_id) {
+	case PERIPH_ID_SPI0:
+		reg = &clk->div_peric1;
+		shift = 20;
+		pre_reg = &clk->div_peric4;
+		pre_shift = 8;
+		break;
+	case PERIPH_ID_SPI1:
+		reg = &clk->div_peric1;
+		shift = 24;
+		pre_reg = &clk->div_peric4;
+		pre_shift = 16;
+		break;
+	case PERIPH_ID_SPI2:
+		reg = &clk->div_peric1;
+		shift = 28;
+		pre_reg = &clk->div_peric4;
+		pre_shift = 24;
+		break;
+	case PERIPH_ID_SPI3:
+		reg = &clk->div_isp1;
+		shift = 16;
+		pre_reg = &clk->div_isp1;
+		pre_shift = 0;
+		break;
+	case PERIPH_ID_SPI4:
+		reg = &clk->div_isp1;
+		shift = 20;
+		pre_reg = &clk->div_isp1;
+		pre_shift = 8;
+		break;
+	default:
+		debug("%s: Unsupported peripheral ID %d\n", __func__,
+		      periph_id);
+		return -1;
+	}
+
+	clrsetbits_le32(reg, div_mask << shift, (main & div_mask) << shift);
+	clrsetbits_le32(pre_reg, pre_div_mask << pre_shift,
+			(fine & pre_div_mask) << pre_shift);
+
+	return 0;
+}
+
+static unsigned long exynos4_get_i2c_clk(void)
+{
+	struct exynos4_clock *clk =
+		(struct exynos4_clock *)samsung_get_base_clock();
+	unsigned long sclk, aclk_100;
+	unsigned int ratio;
+
+	sclk = get_pll_clk(APLL);
+
+	ratio = (readl(&clk->div_top)) >> 4;
+	ratio &= 0xf;
+	aclk_100 = sclk / (ratio + 1);
+	return aclk_100;
+}
+
+unsigned long get_pll_clk(int pllreg)
+{
+	if (cpu_is_exynos5()) {
+		if (proid_is_exynos5420() || proid_is_exynos5800())
+			return exynos542x_get_pll_clk(pllreg);
+		return exynos5_get_pll_clk(pllreg);
+	} else if (cpu_is_exynos4()) {
+		if (proid_is_exynos4412())
+			return exynos4x12_get_pll_clk(pllreg);
+		return exynos4_get_pll_clk(pllreg);
+	}
+
+	return 0;
+}
+
+unsigned long get_arm_clk(void)
+{
+	if (cpu_is_exynos5()) {
+		return exynos5_get_arm_clk();
+	} else if (cpu_is_exynos4()) {
+		if (proid_is_exynos4412())
+			return exynos4x12_get_arm_clk();
+		return exynos4_get_arm_clk();
+	}
+
+	return 0;
+}
+
+unsigned long get_i2c_clk(void)
+{
+	if (cpu_is_exynos5())
+		return clock_get_periph_rate(PERIPH_ID_I2C0);
+	else if (cpu_is_exynos4())
+		return exynos4_get_i2c_clk();
+
+	return 0;
+}
+
+unsigned long get_pwm_clk(void)
+{
+	if (cpu_is_exynos5()) {
+		return clock_get_periph_rate(PERIPH_ID_PWM0);
+	} else if (cpu_is_exynos4()) {
+		if (proid_is_exynos4412())
+			return exynos4x12_get_pwm_clk();
+		return exynos4_get_pwm_clk();
+	}
+
+	return 0;
+}
+
+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()) {
+		return clock_get_periph_rate(id);
+	} else if (cpu_is_exynos4()) {
+		if (proid_is_exynos4412())
+			return exynos4x12_get_uart_clk(dev_index);
+		return exynos4_get_uart_clk(dev_index);
+	}
+
+	return 0;
+}
+
+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())
+		return clock_get_periph_rate(id);
+	else if (cpu_is_exynos4())
+		return exynos4_get_mmc_clk(dev_index);
+
+	return 0;
+}
+
+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);
+		else
+			exynos5_set_mmc_clk(dev_index, div);
+	} else if (cpu_is_exynos4()) {
+		exynos4_set_mmc_clk(dev_index, div);
+	}
+}
+
+unsigned long get_lcd_clk(void)
+{
+	if (cpu_is_exynos4()) {
+		return exynos4_get_lcd_clk();
+	} else if (cpu_is_exynos5()) {
+		if (proid_is_exynos5420())
+			return exynos5420_get_lcd_clk();
+		else if (proid_is_exynos5800())
+			return exynos5800_get_lcd_clk();
+		else
+			return exynos5_get_lcd_clk();
+	}
+
+	return 0;
+}
+
+void set_lcd_clk(void)
+{
+	if (cpu_is_exynos4()) {
+		exynos4_set_lcd_clk();
+	} else if (cpu_is_exynos5()) {
+		if (proid_is_exynos5250())
+			exynos5_set_lcd_clk();
+		else if (proid_is_exynos5420())
+			exynos5420_set_lcd_clk();
+		else
+			exynos5800_set_lcd_clk();
+	}
+}
+
+void set_mipi_clk(void)
+{
+	if (cpu_is_exynos4())
+		exynos4_set_mipi_clk();
+}
+
+int set_spi_clk(int periph_id, unsigned int rate)
+{
+	if (cpu_is_exynos5()) {
+		if (proid_is_exynos5420() || proid_is_exynos5800())
+			return exynos5420_set_spi_clk(periph_id, rate);
+		return exynos5_set_spi_clk(periph_id, rate);
+	}
+
+	return 0;
+}
+
+int set_i2s_clk_prescaler(unsigned int src_frq, unsigned int dst_frq,
+			  unsigned int i2s_id)
+{
+	if (cpu_is_exynos5())
+		return exynos5_set_i2s_clk_prescaler(src_frq, dst_frq, i2s_id);
+
+	return 0;
+}
+
+int set_i2s_clk_source(unsigned int i2s_id)
+{
+	if (cpu_is_exynos5())
+		return exynos5_set_i2s_clk_source(i2s_id);
+
+	return 0;
+}
+
+int set_epll_clk(unsigned long rate)
+{
+	if (cpu_is_exynos5())
+		return exynos5_set_epll_clk(rate);
+
+	return 0;
+}