[U-Boot] [PATCH 4/8] clk: Add MPC83xx clock driver

Mario Six mario.six at gdsys.cc
Wed Mar 28 12:38:28 UTC 2018


Add a clock driver for the MPC83xx architecture.

Signed-off-by: Mario Six <mario.six at gdsys.cc>
---
 arch/powerpc/cpu/mpc83xx/speed.c      |   4 +
 arch/powerpc/include/asm/config.h     |   2 +-
 drivers/clk/Kconfig                   |   6 +
 drivers/clk/Makefile                  |   1 +
 drivers/clk/mpc83xx_clk.c             | 415 ++++++++++++++++++++++++++++++++++
 drivers/clk/mpc83xx_clk.h             | 115 ++++++++++
 include/dt-bindings/clk/mpc83xx-clk.h |  27 +++
 7 files changed, 569 insertions(+), 1 deletion(-)
 create mode 100644 drivers/clk/mpc83xx_clk.c
 create mode 100644 drivers/clk/mpc83xx_clk.h
 create mode 100644 include/dt-bindings/clk/mpc83xx-clk.h

diff --git a/arch/powerpc/cpu/mpc83xx/speed.c b/arch/powerpc/cpu/mpc83xx/speed.c
index 5498c19e25..c9bdec0bc0 100644
--- a/arch/powerpc/cpu/mpc83xx/speed.c
+++ b/arch/powerpc/cpu/mpc83xx/speed.c
@@ -7,6 +7,8 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
+#ifndef CONFIG_CLK_MPC83XX
+
 #include <common.h>
 #include <mpc83xx.h>
 #include <command.h>
@@ -591,3 +593,5 @@ U_BOOT_CMD(clocks, 1, 0, do_clocks,
 	"print clock configuration",
 	"    clocks"
 );
+
+#endif
diff --git a/arch/powerpc/include/asm/config.h b/arch/powerpc/include/asm/config.h
index 39eeb39901..d9dfb670af 100644
--- a/arch/powerpc/include/asm/config.h
+++ b/arch/powerpc/include/asm/config.h
@@ -79,7 +79,7 @@
 /* All PPC boards must swap IDE bytes */
 #define CONFIG_IDE_SWAP_IO
 
-#if defined(CONFIG_DM_SERIAL)
+#if defined(CONFIG_DM_SERIAL) && !defined(CONFIG_CLK_MPC83XX)
 /*
  * TODO: Convert this to a clock driver exists that can give us the UART
  * clock here.
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index c382e8865f..acac9413e1 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -83,6 +83,12 @@ config CLK_STM32MP1
 	  Enable the STM32 clock (RCC) driver. Enable support for
 	  manipulating STM32MP1's on-SoC clocks.
 
+config CLK_MPC83XX
+	bool "Enable MPC83xx clock driver"
+	depends on CLK
+	help
+	  Support for the clock driver of the MPC83xx series of SoCs.
+
 source "drivers/clk/tegra/Kconfig"
 source "drivers/clk/uniphier/Kconfig"
 source "drivers/clk/exynos/Kconfig"
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index e05c607223..67da125669 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_CLK_BCM6345) += clk_bcm6345.o
 obj-$(CONFIG_CLK_BOSTON) += clk_boston.o
 obj-$(CONFIG_CLK_EXYNOS) += exynos/
 obj-$(CONFIG_CLK_HSDK) += clk-hsdk-cgu.o
+obj-$(CONFIG_CLK_MPC83XX) += mpc83xx_clk.o
 obj-$(CONFIG_CLK_RENESAS) += renesas/
 obj-$(CONFIG_CLK_STM32F) += clk_stm32f.o
 obj-$(CONFIG_CLK_STM32MP1) += clk_stm32mp1.o
diff --git a/drivers/clk/mpc83xx_clk.c b/drivers/clk/mpc83xx_clk.c
new file mode 100644
index 0000000000..9560ae56a9
--- /dev/null
+++ b/drivers/clk/mpc83xx_clk.c
@@ -0,0 +1,415 @@
+/*
+ * (C) Copyright 2017
+ * Mario Six, Guntermann & Drunck GmbH, mario.six at gdsys.cc
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <dt-bindings/clk/mpc83xx-clk.h>
+
+#include "mpc83xx_clk.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static u32 *speed;
+
+struct mpc83xx_clk_priv {
+	u32 *speed;
+};
+
+static const char * const names[] = {
+	[MPC83XX_CLK_CORE] = "Core",
+	[MPC83XX_CLK_CSB] = "Coherent System Bus",
+	[MPC83XX_CLK_QE] = "QE",
+	[MPC83XX_CLK_BRG] = "BRG",
+	[MPC83XX_CLK_LBIU] = "Local Bus Controller",
+	[MPC83XX_CLK_LCLK] = "Local Bus",
+	[MPC83XX_CLK_MEM] = "DDR",
+	[MPC83XX_CLK_MEM_SEC] = "DDR Secondary",
+	[MPC83XX_CLK_ENC] = "SEC",
+	[MPC83XX_CLK_I2C1] = "I2C1",
+	[MPC83XX_CLK_I2C2] = "I2C2",
+	[MPC83XX_CLK_TDM] = "TDM",
+	[MPC83XX_CLK_SDHC] = "SDHC",
+	[MPC83XX_CLK_TSEC1] = "TSEC1",
+	[MPC83XX_CLK_TSEC2] = "TSEC2",
+	[MPC83XX_CLK_USBDR] = "USB DR",
+	[MPC83XX_CLK_USBMPH] = "USB MPH",
+	[MPC83XX_CLK_PCIEXP1] = "PCIEXP1",
+	[MPC83XX_CLK_PCIEXP2] = "PCIEXP2",
+	[MPC83XX_CLK_SATA] = "SATA",
+	[MPC83XX_CLK_DMAC] = "DMAC",
+	[MPC83XX_CLK_PCI] = "PCI",
+};
+
+struct clk_mode {
+	u8 low;
+	u8 high;
+	int type;
+};
+
+const struct clk_mode modes[] = {
+
+	[MPC83XX_CLK_CORE] = {0, 0, TYPE_SPECIAL},
+	[MPC83XX_CLK_CSB] = {0, 0, TYPE_SPECIAL},
+	[MPC83XX_CLK_QE] = {0, 0, TYPE_SPECIAL},
+	[MPC83XX_CLK_BRG] = {0, 0, TYPE_SPECIAL},
+	[MPC83XX_CLK_MEM] = {1, 1, TYPE_SPMR_DIRECT_MULTIPLY },
+	[MPC83XX_CLK_LBIU] = {0, 0, TYPE_SPMR_DIRECT_MULTIPLY },
+	[MPC83XX_CLK_LCLK] = {0, 0, TYPE_SPECIAL},
+	[MPC83XX_CLK_MEM_SEC] = {0, 0, TYPE_SPMR_DIRECT_MULTIPLY }, /* The same as LBIU */
+#ifndef CONFIG_MPC8313
+	[MPC83XX_CLK_TSEC1] = {0, 1, TYPE_SCCR_STANDARD },
+	[MPC83XX_CLK_TSEC2] = {2, 3, TYPE_SCCR_STANDARD },
+#else
+	[MPC83XX_CLK_TSEC1] = {0, 1, TYPE_SCCR_STANDARD }, /* FIXME: This has separate enable/disable bit! */
+	[MPC83XX_CLK_TSEC2] = {0, 1, TYPE_SCCR_STANDARD }, /* FIXME: This has separate enable/disable bit! */
+#endif
+	[MPC83XX_CLK_SDHC] = {4, 5, TYPE_SCCR_STANDARD },
+#ifdef CONFIG_MPC834x
+	[MPC83XX_CLK_ENC] = {6, 7, TYPE_SCCR_STANDARD },
+	[MPC83XX_CLK_I2C1] = {2, 3, TYPE_SCCR_STANDARD }, /* I2C and TSEC2 are the same register */
+#else
+	[MPC83XX_CLK_ENC] = {6, 7, TYPE_SCCR_STANDARD },
+	[MPC83XX_CLK_I2C1] = {6, 7, TYPE_SCCR_STANDARD }, /* I2C and ENC are the same register */
+#endif
+	[MPC83XX_CLK_I2C2] = {0, 0, TYPE_SPECIAL },
+	[MPC83XX_CLK_PCIEXP1] = {10, 11, TYPE_SCCR_STANDARD },
+	[MPC83XX_CLK_PCIEXP2] = {12, 13, TYPE_SCCR_STANDARD },
+#if defined(CONFIG_MPC8313) || defined(CONFIG_MPC834x)
+	[MPC83XX_CLK_USBDR] = {10, 11, TYPE_SCCR_STANDARD },
+#else
+	[MPC83XX_CLK_USBDR] = {8, 9, TYPE_SCCR_STANDARD },
+#endif
+	[MPC83XX_CLK_USBMPH] = {8, 9, TYPE_SCCR_STANDARD },
+	[MPC83XX_CLK_PCI] = {15, 15, TYPE_SCCR_ONOFF },
+#if defined(CONFIG_MPC8308) || defined(CONFIG_MPC8309)
+	[MPC83XX_CLK_DMAC] = {26, 27, TYPE_SCCR_STANDARD },
+#endif
+#if 0
+/* FIXME: All SATA controllers must have the same clock ratio */
+#ifdef CONFIG_MPC83XX_SATA_SUPPORT
+#ifdef CONFIG_MPC8379
+	[MPC83XX_CLK_SATA] = {24, 25, TYPE_SCCR_STANDARD },
+	[MPC83XX_CLK_SATA] = {26, 27, TYPE_SCCR_STANDARD },
+	[MPC83XX_CLK_SATA] = {28, 29, TYPE_SCCR_STANDARD },
+	[MPC83XX_CLK_SATA] = {30, 31, TYPE_SCCR_STANDARD },
+#else
+	[MPC83XX_CLK_SATA] = {18, 19, TYPE_SCCR_STANDARD },
+	[MPC83XX_CLK_SATA] = {20, 21, TYPE_SCCR_STANDARD },
+#endif
+#endif
+#endif
+	[MPC83XX_CLK_TDM] = {26, 27, TYPE_SCCR_STANDARD },
+};
+
+int get_clocks(void)
+{
+	return 0;
+}
+
+inline bool is_clk_valid(int id)
+{
+	switch (id) {
+	case MPC83XX_CLK_MEM:
+#if defined(CONFIG_MPC8360)
+	case MPC83XX_CLK_MEM_SEC:
+#endif
+#ifndef CONFIG_MPC830x
+	case MPC83XX_CLK_ENC:
+#endif
+	case MPC83XX_CLK_I2C1:
+#ifdef CONFIG_MPC8315
+	case MPC83XX_CLK_TDM:
+#endif
+#ifdef CONFIG_MPC83XX_SDHC_SUPPORT
+	case MPC83XX_CLK_SDHC:
+#endif
+#ifdef CONFIG_MPC83XX_TSEC1_SUPPORT
+	case MPC83XX_CLK_TSEC1:
+#endif
+#ifdef CONFIG_MPC83XX_TSEC2_SUPPORT
+	case MPC83XX_CLK_TSEC2:
+#endif
+#if !defined(CONFIG_MPC8360)
+	case MPC83XX_CLK_USBDR:
+#endif
+#ifdef CONFIG_MPC834x
+	case MPC83XX_CLK_USBMPH:
+#endif
+#ifdef CONFIG_MPC83XX_PCIE1_SUPPORT
+	case MPC83XX_CLK_PCIEXP1:
+#endif
+#ifdef CONFIG_MPC83XX_PCIE2_SUPPORT
+	case MPC83XX_CLK_PCIEXP2:
+#endif
+#ifdef CONFIG_MPC83XX_SATA_SUPPORT
+	case MPC83XX_CLK_SATA:
+#endif
+#ifdef CONFIG_MPC830x
+	case MPC83XX_CLK_DMAC:
+#endif
+#ifdef CONFIG_MPC83XX_PCI_SUPPORT
+	case MPC83XX_CLK_PCI:
+#endif
+	case MPC83XX_CLK_CSB:
+#ifdef CONFIG_MPC83XX_SECOND_I2C_SUPPORT
+	case MPC83XX_CLK_I2C2:
+#endif
+#if defined(CONFIG_MPC83XX_QUICC_ENGINE) && !defined(CONFIG_MPC8309)
+	case MPC83XX_CLK_QE:
+	case MPC83XX_CLK_BRG:
+#endif
+	case MPC83XX_CLK_LCLK:
+	case MPC83XX_CLK_LBIU:
+	case MPC83XX_CLK_CORE:
+		return true;
+	}
+
+	return false;
+}
+
+static int mpc83xx_clk_request(struct clk *clock)
+{
+	/* Reject requests of clocks that are not available */
+	if (is_clk_valid(clock->id))
+		return 0;
+	else
+		return -ENODEV;
+}
+
+static inline void init_clks(u32 *speed)
+{
+	int i;
+	immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
+	u32 csb_clk = get_csb_clk(im);
+
+	for (i = 0; i < MPC83XX_CLK_COUNT; i++) {
+		struct clk_mode mode = modes[i];
+		ulong mask;
+
+		if (mode.type == TYPE_INVALID)
+			continue;
+
+		if (mode.type == TYPE_SCCR_STANDARD) {
+			mask = GENMASK(31 - mode.low, 31 - mode.high);
+
+			switch (sccr_field(im, mask, 31 - mode.high)) {
+			case 0:
+				speed[i] = 0;
+				break;
+			case 1:
+				speed[i] = csb_clk;
+				break;
+			case 2:
+				speed[i] = csb_clk / 2;
+				break;
+			case 3:
+				speed[i] = csb_clk / 3;
+				break;
+			default:
+				speed[i] = 0;
+			}
+
+			continue;
+		}
+
+		if (mode.type == TYPE_SPMR_DIRECT_MULTIPLY) {
+			mask = GENMASK(31 - mode.low, 31 - mode.high);
+
+			speed[i] = csb_clk * (1 + sccr_field(im, mask, 31 - mode.high));
+			continue;
+		}
+
+		if (i == MPC83XX_CLK_CSB || i == MPC83XX_CLK_I2C2) {
+			speed[i] = csb_clk; /* i2c-2 clk is equal to csb clk */
+			continue;
+		}
+
+		if (i == MPC83XX_CLK_QE || i == MPC83XX_CLK_BRG) {
+			u32 pci_sync_in = get_pci_sync_in(im);
+			u32 qepmf = spmr_field(im, SPMR_CEPMF, SPMR_CEPMF_SHIFT);
+			u32 qepdf = spmr_field(im, SPMR_CEPDF, SPMR_CEPDF_SHIFT);
+			u32 qe_clk = (pci_sync_in * qepmf) / (1 + qepdf);
+
+			if (i == MPC83XX_CLK_QE)
+				speed[i] = qe_clk;
+			else
+				speed[i] = qe_clk / 2;
+
+			continue;
+		}
+
+		if (i == MPC83XX_CLK_LCLK || i == MPC83XX_CLK_LBIU) {
+			u32 lbiu_clk = csb_clk *
+				(1 + spmr_field(im, SPMR_LBIUCM, SPMR_LBIUCM_SHIFT));
+			u32 clkdiv = lcrr_field(im, LCRR_CLKDIV, LCRR_CLKDIV_SHIFT);
+
+			if (i == MPC83XX_CLK_LBIU)
+				speed[i] = lbiu_clk;
+
+			switch (clkdiv) {
+			case 2:
+			case 4:
+			case 8:
+				speed[i] = lbiu_clk / clkdiv;
+				break;
+			default:
+				/* unknown lcrr */
+				speed[i] = 0;
+			}
+
+			continue;
+		}
+
+		if (i == MPC83XX_CLK_CORE) {
+			u8 corepll = spmr_field(im, SPMR_COREPLL, SPMR_COREPLL_SHIFT);
+			u32 corecnf_tab_index = ((corepll & 0x1F) << 2) |
+						((corepll & 0x60) >> 5);
+
+			if (corecnf_tab_index > (ARRAY_SIZE(corecnf_tab))) {
+				/* corecnf_tab_index is too high, possibly wrong value */
+				speed[i] = 0;
+			}
+
+			switch (corecnf_tab[corecnf_tab_index].core_csb_ratio) {
+			case _byp:
+			case _x1:
+			case _1x:
+				speed[i] = csb_clk;
+				break;
+			case _1_5x:
+				speed[i] = (3 * csb_clk) / 2;
+				break;
+			case _2x:
+				speed[i] = 2 * csb_clk;
+				break;
+			case _2_5x:
+				speed[i] = (5 * csb_clk) / 2;
+				break;
+			case _3x:
+				speed[i] = 3 * csb_clk;
+				break;
+			default:
+				/* unknown core to csb ratio */
+				speed[i] = 0;
+			}
+
+			continue;
+		}
+	}
+}
+
+static ulong mpc83xx_clk_get_rate(struct clk *clk)
+{
+	struct mpc83xx_clk_priv *priv = dev_get_priv(clk->dev);
+
+	return priv->speed[clk->id];
+}
+
+int get_serial_clock(void)
+{
+	return speed[MPC83XX_CLK_CSB];
+}
+
+const struct clk_ops mpc83xx_clk_ops = {
+	.request = mpc83xx_clk_request,
+	.get_rate = mpc83xx_clk_get_rate,
+};
+
+static const struct udevice_id mpc83xx_clk_match[] = {
+	{ .compatible = "fsl,mpc83xx-clk", },
+	{ /* sentinel */ }
+};
+
+static int mpc83xx_clk_probe(struct udevice *dev)
+{
+	struct mpc83xx_clk_priv *priv = dev_get_priv(dev);
+
+	speed = malloc((MPC83XX_CLK_COUNT + 1) * sizeof(u32));
+	priv->speed = speed;
+	init_clks(priv->speed);
+
+	gd->arch.csb_clk = speed[MPC83XX_CLK_CSB];
+#if defined(CONFIG_MPC8308) || defined(CONFIG_MPC831x) || \
+	defined(CONFIG_MPC834x) || defined(CONFIG_MPC837x)
+	gd->arch.tsec1_clk = speed[MPC83XX_CLK_TSEC1];
+	gd->arch.tsec2_clk = speed[MPC83XX_CLK_TSEC2];
+	gd->arch.usbdr_clk = speed[MPC83XX_CLK_USBDR];
+#elif defined(CONFIG_MPC8309)
+	gd->arch.usbdr_clk = speed[MPC83XX_CLK_USBDR];
+#endif
+#if defined(CONFIG_MPC834x)
+	gd->arch.usbmph_clk = speed[MPC83XX_CLK_USBMPH];
+#endif
+#if defined(CONFIG_MPC8315)
+	gd->arch.tdm_clk = speed[MPC83XX_CLK_TDM];
+#endif
+#if defined(CONFIG_FSL_ESDHC)
+	gd->arch.sdhc_clk = speed[MPC83XX_CLK_SDHC];
+#endif
+	gd->arch.core_clk = speed[MPC83XX_CLK_CORE];
+	gd->arch.i2c1_clk = speed[MPC83XX_CLK_I2C1];
+#if !defined(CONFIG_MPC832x)
+	gd->arch.i2c2_clk = speed[MPC83XX_CLK_I2C2];
+#endif
+#if !defined(CONFIG_MPC8309)
+	gd->arch.enc_clk = speed[MPC83XX_CLK_ENC];
+#endif
+	gd->arch.lbiu_clk = speed[MPC83XX_CLK_LBIU];
+	gd->arch.lclk_clk = speed[MPC83XX_CLK_LCLK];
+	gd->mem_clk = speed[MPC83XX_CLK_MEM];
+#if defined(CONFIG_MPC8360)
+	gd->arch.mem_sec_clk = speed[MPC83XX_CLK_MEM_SEC];
+#endif
+#if defined(CONFIG_QE)
+	gd->arch.qe_clk = speed[MPC83XX_CLK_QE];
+	gd->arch.brg_clk = speed[MPC83XX_CLK_BRG];
+#endif
+#if defined(CONFIG_MPC8308) || defined(CONFIG_MPC831x) || \
+	defined(CONFIG_MPC837x)
+	gd->arch.pciexp1_clk = speed[MPC83XX_CLK_PCIEXP1];
+	gd->arch.pciexp2_clk = speed[MPC83XX_CLK_PCIEXP2];
+#endif
+#if defined(CONFIG_MPC837x) || defined(CONFIG_MPC8315)
+	gd->arch.sata_clk = speed[MPC83XX_CLK_SATA];
+#endif
+	gd->pci_clk = speed[MPC83XX_CLK_PCI];
+	gd->cpu_clk = speed[MPC83XX_CLK_CORE];
+	gd->bus_clk = speed[MPC83XX_CLK_CSB];
+
+	return 0;
+}
+
+U_BOOT_DRIVER(mpc83xx_clk) = {
+	.name = "mpc83xx_clk",
+	.id = UCLASS_CLK,
+	.of_match = mpc83xx_clk_match,
+	.ops = &mpc83xx_clk_ops,
+	.probe = mpc83xx_clk_probe,
+	.priv_auto_alloc_size	= sizeof(struct mpc83xx_clk_priv),
+};
+
+static int do_clocks(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	int i;
+	char buf[32];
+
+	for (i = 0; i < MPC83XX_CLK_COUNT; i++) {
+		if (!is_clk_valid(i))
+			continue;
+
+		printf("%s = %s MHz\n", names[i], strmhz(buf, speed[i]));
+	}
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	clocks,	1,	1,	do_clocks,
+	"display values of SoC's clocks",
+	""
+);
diff --git a/drivers/clk/mpc83xx_clk.h b/drivers/clk/mpc83xx_clk.h
new file mode 100644
index 0000000000..75db2f3699
--- /dev/null
+++ b/drivers/clk/mpc83xx_clk.h
@@ -0,0 +1,115 @@
+enum {
+	_unk,
+	_off,
+	_byp,
+	_x8,
+	_x4,
+	_x2,
+	_x1,
+	_1x,
+	_1_5x,
+	_2x,
+	_2_5x,
+	_3x
+};
+
+struct corecnf {
+	int core_csb_ratio;
+	int vco_divider;
+};
+
+static struct corecnf corecnf_tab[] = {
+	{_byp, _byp},		/* 0x00 */
+	{_byp, _byp},		/* 0x01 */
+	{_byp, _byp},		/* 0x02 */
+	{_byp, _byp},		/* 0x03 */
+	{_byp, _byp},		/* 0x04 */
+	{_byp, _byp},		/* 0x05 */
+	{_byp, _byp},		/* 0x06 */
+	{_byp, _byp},		/* 0x07 */
+	{_1x, _x2},		/* 0x08 */
+	{_1x, _x4},		/* 0x09 */
+	{_1x, _x8},		/* 0x0A */
+	{_1x, _x8},		/* 0x0B */
+	{_1_5x, _x2},		/* 0x0C */
+	{_1_5x, _x4},		/* 0x0D */
+	{_1_5x, _x8},		/* 0x0E */
+	{_1_5x, _x8},		/* 0x0F */
+	{_2x, _x2},		/* 0x10 */
+	{_2x, _x4},		/* 0x11 */
+	{_2x, _x8},		/* 0x12 */
+	{_2x, _x8},		/* 0x13 */
+	{_2_5x, _x2},		/* 0x14 */
+	{_2_5x, _x4},		/* 0x15 */
+	{_2_5x, _x8},		/* 0x16 */
+	{_2_5x, _x8},		/* 0x17 */
+	{_3x, _x2},		/* 0x18 */
+	{_3x, _x4},		/* 0x19 */
+	{_3x, _x8},		/* 0x1A */
+	{_3x, _x8},		/* 0x1B */
+};
+
+enum reg_type {
+	REG_SCCR,
+	REG_SPMR,
+};
+
+enum mode_type {
+	TYPE_INVALID = 0,
+	TYPE_SCCR_STANDARD,
+	TYPE_SCCR_ONOFF,
+	TYPE_SPMR_DIRECT_MULTIPLY,
+	TYPE_SPECIAL,
+};
+
+static inline u32 get_spmr(immap_t *im)
+{
+	u32 res = in_be32(&im->clk.spmr);
+
+	return res;
+}
+
+static inline u32 get_sccr(immap_t *im)
+{
+	u32 res = in_be32(&im->clk.sccr);
+
+	return res;
+}
+
+static inline u32 get_lcrr(immap_t *im)
+{
+	u32 res = in_be32(&im->im_lbc.lcrr);
+
+	return res;
+}
+
+static inline u32 get_pci_sync_in(immap_t *im)
+{
+	u8 clkin_div;
+
+	clkin_div = (get_spmr(im) & SPMR_CKID) >> SPMR_CKID_SHIFT;
+	return CONFIG_SYS_CLK_FREQ / (1 + clkin_div);
+}
+
+static inline u32 get_csb_clk(immap_t *im)
+{
+	u8 spmf;
+
+	spmf = (get_spmr(im) & SPMR_SPMF) >> SPMR_SPMF_SHIFT;
+	return CONFIG_SYS_CLK_FREQ * spmf;
+}
+
+static inline uint spmr_field(immap_t *im, u32 mask, uint shift)
+{
+	return (get_spmr(im) & mask) >> shift;
+}
+
+static inline uint sccr_field(immap_t *im, u32 mask, uint shift)
+{
+	return (get_sccr(im) & mask) >> shift;
+}
+
+static inline uint lcrr_field(immap_t *im, u32 mask, uint shift)
+{
+	return (get_lcrr(im) & mask) >> shift;
+}
diff --git a/include/dt-bindings/clk/mpc83xx-clk.h b/include/dt-bindings/clk/mpc83xx-clk.h
new file mode 100644
index 0000000000..3e5b2858c0
--- /dev/null
+++ b/include/dt-bindings/clk/mpc83xx-clk.h
@@ -0,0 +1,27 @@
+#ifndef DT_BINDINGS_MPC83XX_CLK_H
+#define DT_BINDINGS_MPC83XX_CLK_H
+#define MPC83XX_CLK_CORE	0
+#define MPC83XX_CLK_CSB		1
+#define MPC83XX_CLK_QE		2
+#define MPC83XX_CLK_BRG		3
+#define MPC83XX_CLK_LBIU	4
+#define MPC83XX_CLK_LCLK	5
+#define MPC83XX_CLK_MEM		6
+#define MPC83XX_CLK_MEM_SEC	7
+#define MPC83XX_CLK_ENC		8
+#define MPC83XX_CLK_I2C1	9
+#define MPC83XX_CLK_I2C2	10
+#define MPC83XX_CLK_TDM		11
+#define MPC83XX_CLK_SDHC	12
+#define MPC83XX_CLK_TSEC1	13
+#define MPC83XX_CLK_TSEC2	14
+#define MPC83XX_CLK_USBDR	15
+#define MPC83XX_CLK_USBMPH	16
+#define MPC83XX_CLK_PCIEXP1	17
+#define MPC83XX_CLK_PCIEXP2	18
+#define MPC83XX_CLK_SATA	19
+#define MPC83XX_CLK_DMAC	20
+#define MPC83XX_CLK_PCI		21
+/* Count */
+#define MPC83XX_CLK_COUNT	22
+#endif /* DT_BINDINGS_MPC83XX_CLK_H */
-- 
2.16.1



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