Merge branch 'master' of git://git.denx.de/u-boot-arm

* 'master' of git://git.denx.de/u-boot-arm:
  SMDKV310: Fix incorrect conditional compilation for MIU linear mapping
  SMDKV310: CPU fequency and mmc_pre_ratio modified
  armv7: Add support for ST-Ericsson U8500 href platform
  I2C: Add driver for ST-Ericsson U8500 i2c
  armv7: Add ST-Ericsson u8500 arch
  Kirkwood: boards cleanup for deprecated CONFIG_CMD_AUTOSCRIPT
  ARMV7: Vexpress: Add missing MMC header
  arm/km: update mgcoge3un board support
  mvgbe: enable configurability of PORT_SERIAL_CONTROL_VALUE
  arm/km: rename mgcoge2un to mgcoge3un
  arm/km: add second serial interface for kirkwood
  arm/km: disable ls (through jffs2 support)
  arm/km: introduce bootcount env variable and clean km_arm
  arm/km: move CONFIG_EXTRA_ENV_SETTINGS from board to km_arm file
  arm/km: remove CONFIG_SYS_KWD_CONFIG from keymile-common.h
  ARMV7: MMC SPL Boot support for SMDKV310 board
  ARMV7: Add support for Samsung SMDKV310 Board
  S5PC2XX: clock: support pwm clock for evt1 (cpu revision 1)
  S5P: add set_mmc_clk for external clock control
  S5PC2XX: Support the cpu revision
  S5P:SROM config code moved to s5p-common directory
  Add _end for the end of u-boot image for SMDK6400
  MMC S5P: Fix typo
  S5P: GPIO Macro Values Corrected.
  SMDK2410: various cleanup/code style fixes
  SMDK2410: use the CFI driver (and remove the old one)
  SMDK2410: remove unneeded config.mk
  SMDK2410: activate ARM relocation feature
  BeagleBoard: fixed typo in typecast
  mvsata: issue hard reset on initialization
  VCMA9: use ARM relocation feature to fix build error
  MX31: drop warnings due to missing prototype for mxc_watchdog_reset()
  MX5: drop config.mk from efikamx board
  MX31: Make get_reset_cause() static and drop unreachable code
  MX53: Remove CONFIG_SYS_BOOTMAPSZ from mx53 config files.
  MX53: Handle silicon revision 2.1 case
  mx5: board: code clean up for checkboard code
  MX51: vision2: Fix build for vision2 board.
  MX51: vision: Let video mode struct be independant of watchdog.
  MX53: Add initial support for MX53SMD board.
  MX53: support for freescale MX53LOCO board
  mx5: Fix CONFIG_OF_LIBFDT redefined warning
  mx5: Remove unnecessary CONFIG_SYS_BOOTMAPSZ definition
  mx31pdk: Clean up mx31pdk.h file

5 files changed, 1163 insertions, 0 deletions

diff --git a/board/st-ericsson/u8500/Makefile b/board/st-ericsson/u8500/Makefile
new file mode 100644
index 0000000..91c2abf
--- /dev/null
+++ b/board/st-ericsson/u8500/Makefile
@@ -0,0 +1,50 @@
+#
+# Copyright (C) ST-Ericsson SA 2009
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+CFLAGS += -D__RELEASE -D__STN_8500
+LIB	= $(obj)lib$(BOARD).o
+
+COBJS	:= u8500_href.o gpio.o prcmu.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB): $(obj).depend $(OBJS) $(SOBJS)
+	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak $(obj).depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/st-ericsson/u8500/gpio.c b/board/st-ericsson/u8500/gpio.c
new file mode 100644
index 0000000..96b2461
--- /dev/null
+++ b/board/st-ericsson/u8500/gpio.c
@@ -0,0 +1,347 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2009
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/arch/gpio.h>
+
+static struct gpio_register *addr_gpio_register[] = {
+	(void *)U8500_GPIO_0_BASE,
+	(void *)U8500_GPIO_1_BASE,
+	(void *)U8500_GPIO_2_BASE,
+	(void *)U8500_GPIO_3_BASE,
+	(void *)U8500_GPIO_4_BASE,
+	(void *)U8500_GPIO_5_BASE,
+	(void *)U8500_GPIO_6_BASE,
+	(void *)U8500_GPIO_7_BASE,
+	(void *)U8500_GPIO_8_BASE,
+};
+
+struct gpio_altfun_data altfun_table[] = {
+	{
+		.altfun = GPIO_ALT_I2C_0,
+		.start = 147,
+		.end = 148,
+		.cont = 0,
+		.type = GPIO_ALTF_A,
+	},
+	{
+		.altfun = GPIO_ALT_I2C_1,
+		.start = 16,
+		.end = 17,
+		.cont = 0,
+		.type = GPIO_ALTF_B,
+	},
+	{
+		.altfun = GPIO_ALT_I2C_2,
+		.start = 10,
+		.end = 11,
+		.cont = 0,
+		.type = GPIO_ALTF_B,
+	},
+	{
+		.altfun = GPIO_ALT_I2C_3,
+		.start = 229,
+		.end = 230,
+		.cont = 0,
+		.type = GPIO_ALTF_C,
+	},
+	{
+		.altfun = GPIO_ALT_UART_0_MODEM,
+		.start = 0,
+		.end = 3,
+		.cont = 1,
+		.type = GPIO_ALTF_A,
+	},
+	{
+		.altfun = GPIO_ALT_UART_0_MODEM,
+		.start = 33,
+		.end = 36,
+		.cont = 0,
+		.type = GPIO_ALTF_C,
+	},
+	{
+		.altfun = GPIO_ALT_UART_1,
+		.start = 4,
+		.end = 7,
+		.cont = 0,
+		.type =
+			GPIO_ALTF_A,
+	},
+	{
+		.altfun = GPIO_ALT_UART_2,
+		.start = 18,
+		.end = 19,
+		.cont = 1,
+		.type = GPIO_ALTF_B,
+	},
+	{
+		.altfun = GPIO_ALT_UART_2,
+		.start = 29,
+		.end = 32,
+		.cont = 0,
+		.type = GPIO_ALTF_C,
+	},
+	{
+		.altfun = GPIO_ALT_MSP_0,
+		.start = 12,
+		.end = 17,
+		.cont = 1,
+		.type = GPIO_ALTF_A,
+	},
+	{
+		.altfun = GPIO_ALT_MSP_0,
+		.start = 21,
+		.end = 21,
+		.cont = 0,
+		.type = GPIO_ALTF_B,
+	},
+	{
+		.altfun = GPIO_ALT_MSP_1,
+		.start = 33,
+		.end = 36,
+		.cont = 0,
+		.type = GPIO_ALTF_A,
+	},
+	{
+		.altfun = GPIO_ALT_MSP_2,
+		.start = 192,
+		.end = 196,
+		.cont = 0,
+		.type = GPIO_ALTF_A,
+	},
+	{
+		.altfun = GPIO_ALT_LCD_PANEL,
+		.start = 64,
+		.end = 93,
+		.cont = 1,
+		.type = GPIO_ALTF_A,
+	},
+	{
+		.altfun = GPIO_ALT_LCD_PANEL,
+		.start = 150,
+		.end = 171,
+		.cont = 0,
+		.type = GPIO_ALTF_B,
+	},
+	{
+		.altfun = GPIO_ALT_SD_CARD0,
+		.start = 18,
+		.end = 28,
+		.cont = 0,
+		.type = GPIO_ALTF_A,
+	},
+	{
+		.altfun = GPIO_ALT_MM_CARD0,
+		.start = 18,
+		.end = 32,
+		.cont = 0,
+		.type = GPIO_ALTF_A,
+	},
+	{
+		.altfun = GPIO_ALT_USB_OTG,
+		.start = 256,
+		.end = 267,
+		.cont = 0,
+		.type = GPIO_ALTF_A,
+	},
+	{
+		.altfun = GPIO_ALT_EMMC,
+		.start = 197,
+		.end = 207,
+		.cont = 0,
+		.type = GPIO_ALTF_A,
+	},
+	{
+		.altfun = GPIO_ALT_POP_EMMC,
+		.start = 128,
+		.end = 138,
+		.cont = 0,
+		.type = GPIO_ALTF_A,
+	},
+};
+
+/*
+ * Static Function declarations
+ */
+enum gpio_error gpio_setpinconfig(int pin_id, struct gpio_config *config)
+{
+	struct gpio_register *p_gpio_register =
+	    addr_gpio_register[GPIO_BLOCK(pin_id)];
+	u32 mask = 1UL << (pin_id % GPIO_PINS_PER_BLOCK);
+	enum gpio_error error = GPIO_OK;
+	u32 temp_reg;
+
+	switch (config->mode) {
+	case GPIO_ALTF_A:
+		temp_reg = readl(&p_gpio_register->gpio_afsa);
+		temp_reg |= mask;
+		writel(temp_reg, &p_gpio_register->gpio_afsa);
+		temp_reg = readl(&p_gpio_register->gpio_afsb);
+		temp_reg &= ~mask;
+		writel(temp_reg, &p_gpio_register->gpio_afsb);
+		break;
+	case GPIO_ALTF_B:
+		temp_reg = readl(&p_gpio_register->gpio_afsa);
+		temp_reg &= ~mask;
+		writel(temp_reg, &p_gpio_register->gpio_afsa);
+		temp_reg = readl(&p_gpio_register->gpio_afsb);
+		temp_reg |= mask;
+		writel(temp_reg, &p_gpio_register->gpio_afsb);
+		break;
+	case GPIO_ALTF_C:
+		temp_reg = readl(&p_gpio_register->gpio_afsa);
+		temp_reg |= mask;
+		writel(temp_reg, &p_gpio_register->gpio_afsa);
+		temp_reg = readl(&p_gpio_register->gpio_afsb);
+		temp_reg |= mask;
+		writel(temp_reg, &p_gpio_register->gpio_afsb);
+		break;
+	case GPIO_MODE_SOFTWARE:
+		temp_reg = readl(&p_gpio_register->gpio_afsa);
+		temp_reg &= ~mask;
+		writel(temp_reg, &p_gpio_register->gpio_afsa);
+		temp_reg = readl(&p_gpio_register->gpio_afsb);
+		temp_reg &= ~mask;
+		writel(temp_reg, &p_gpio_register->gpio_afsb);
+
+		switch (config->direction) {
+		case GPIO_DIR_INPUT:
+			writel(mask, &p_gpio_register->gpio_dirc);
+			break;
+		case GPIO_DIR_OUTPUT:
+			writel(mask, &p_gpio_register->gpio_dirs);
+			break;
+		case GPIO_DIR_LEAVE_UNCHANGED:
+			break;
+		default:
+			return GPIO_INVALID_PARAMETER;
+		}
+
+		break;
+	case GPIO_MODE_LEAVE_UNCHANGED:
+		break;
+	default:
+		return GPIO_INVALID_PARAMETER;
+	}
+	return error;
+}
+
+enum gpio_error gpio_resetgpiopin(int pin_id, char *dev_name)
+{
+	struct gpio_register *p_gpio_register =
+	    addr_gpio_register[GPIO_BLOCK(pin_id)];
+	u32 mask = 1UL << (pin_id % GPIO_PINS_PER_BLOCK);
+	enum gpio_error error = GPIO_OK;
+	u32 temp_reg;
+
+	temp_reg = readl(&p_gpio_register->gpio_afsa);
+	temp_reg &= ~mask;
+	writel(temp_reg, &p_gpio_register->gpio_afsa);
+	temp_reg = readl(&p_gpio_register->gpio_afsb);
+	temp_reg &= ~mask;
+	writel(temp_reg, &p_gpio_register->gpio_afsb);
+	writel(mask, &p_gpio_register->gpio_dirc);
+
+	return error;
+}
+
+struct gpio_config altfun_pinconfig;
+enum gpio_error gpio_altfunction(enum gpio_alt_function alt_func,
+			    int which_altfunc, char *dev_name)
+{
+	int i, j, start, end;
+	enum gpio_error error = -1;
+
+	for (i = 0; i < ARRAY_SIZE(altfun_table); i++) {
+		if (altfun_table[i].altfun != alt_func)
+			continue;
+
+		start = altfun_table[i].start;
+		end = altfun_table[i].end;
+		for (j = start; j <= end; j++) {
+			if (which_altfunc == GPIO_ALTF_FIND)
+				altfun_pinconfig.mode = altfun_table[i].type;
+			else
+				altfun_pinconfig.mode = which_altfunc;
+			altfun_pinconfig.direction = GPIO_DIR_OUTPUT;
+			altfun_pinconfig.dev_name = dev_name;
+
+			if (which_altfunc != GPIO_ALTF_DISABLE)
+				error = gpio_setpinconfig(j, &altfun_pinconfig);
+			else
+				error = gpio_resetgpiopin(j, dev_name);
+			if (!error)
+				continue;
+			printf("GPIO %d configuration failure (nmdk_error:%d)",
+				j, error);
+			error = GPIO_INVALID_PARAMETER;
+			return error;
+		}
+
+		if (!altfun_table[i].cont)
+			break;
+	}
+	return error;
+}
+
+int gpio_writepin(int pin_id, enum gpio_data value, char *dev_name)
+{
+	struct gpio_register *p_gpio_register =
+	    addr_gpio_register[GPIO_BLOCK(pin_id)];
+	u32 mask = 1UL << (pin_id % GPIO_PINS_PER_BLOCK);
+
+	switch (value) {
+	case GPIO_DATA_HIGH:
+		writel(mask, &p_gpio_register->gpio_dats);
+		break;
+	case GPIO_DATA_LOW:
+		writel(mask, &p_gpio_register->gpio_datc);
+		break;
+	default:
+		printf("Invalid value passed in %s", __FUNCTION__);
+		return GPIO_INVALID_PARAMETER;
+	}
+	return GPIO_OK;
+}
+
+int gpio_readpin(int pin_id, enum gpio_data *rv)
+{
+	struct gpio_register *p_gpio_register =
+	    addr_gpio_register[GPIO_BLOCK(pin_id)];
+	u32 mask = 1UL << (pin_id % GPIO_PINS_PER_BLOCK);
+
+	if ((readl(&p_gpio_register->gpio_dat) & mask) != 0)
+		*rv = GPIO_DATA_HIGH;
+	else
+		*rv = GPIO_DATA_LOW;
+	return GPIO_OK;
+}
+
+int gpio_altfuncenable(enum gpio_alt_function altfunc, char *dev_name)
+{
+	return (int)gpio_altfunction(altfunc, GPIO_ALTF_FIND, dev_name);
+}
+
+int gpio_altfuncdisable(enum gpio_alt_function altfunc, char *dev_name)
+{
+	return (int)gpio_altfunction(altfunc, GPIO_ALTF_DISABLE, dev_name);
+}
diff --git a/board/st-ericsson/u8500/prcmu-fw.h b/board/st-ericsson/u8500/prcmu-fw.h
new file mode 100644
index 0000000..0836983
--- /dev/null
+++ b/board/st-ericsson/u8500/prcmu-fw.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2009 ST-Ericsson SA
+ *
+ * Copied from the Linux version:
+ * Author: Kumar Sanghvi <kumar.sanghvi@stericsson.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#ifndef __MACH_PRCMU_FW_V1_H
+#define __MACH_PRCMU_FW_V1_H
+
+#define AP_EXECUTE	2
+#define I2CREAD		1
+#define I2C_WR_OK	1
+#define I2C_RD_OK	2
+#define I2CWRITE	0
+
+#define _PRCMU_TCDM_BASE    U8500_PRCMU_TCDM_BASE
+#define PRCM_XP70_CUR_PWR_STATE (_PRCMU_TCDM_BASE + 0xFFC)      /* 4 BYTES */
+
+#define PRCM_REQ_MB5        (_PRCMU_TCDM_BASE + 0xE44)    /* 4 bytes  */
+#define PRCM_ACK_MB5        (_PRCMU_TCDM_BASE + 0xDF4)    /* 4 bytes */
+
+/* Mailbox 5 Requests */
+#define PRCM_REQ_MB5_I2COPTYPE_REG	(PRCM_REQ_MB5 + 0x0)
+#define PRCM_REQ_MB5_BIT_FIELDS		(PRCM_REQ_MB5 + 0x1)
+#define PRCM_REQ_MB5_I2CSLAVE		(PRCM_REQ_MB5 + 0x2)
+#define PRCM_REQ_MB5_I2CVAL		(PRCM_REQ_MB5 + 0x3)
+
+/* Mailbox 5 ACKs */
+#define PRCM_ACK_MB5_STATUS	(PRCM_ACK_MB5 + 0x1)
+#define PRCM_ACK_MB5_SLAVE	(PRCM_ACK_MB5 + 0x2)
+#define PRCM_ACK_MB5_VAL	(PRCM_ACK_MB5 + 0x3)
+
+#define LOW_POWER_WAKEUP	1
+#define EXE_WAKEUP		0
+
+#define REQ_MB5			5
+
+extern int prcmu_i2c_read(u8 reg, u16 slave);
+extern int prcmu_i2c_write(u8 reg, u16 slave, u8 reg_data);
+
+#endif /* __MACH_PRCMU_FW_V1_H */
diff --git a/board/st-ericsson/u8500/prcmu.c b/board/st-ericsson/u8500/prcmu.c
new file mode 100644
index 0000000..6f9302f
--- /dev/null
+++ b/board/st-ericsson/u8500/prcmu.c
@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) 2009 ST-Ericsson SA
+ *
+ * Adapted from the Linux version:
+ * Author: Kumar Sanghvi <kumar.sanghvi@stericsson.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ */
+
+/*
+ * NOTE: This currently does not support the I2C workaround access method.
+ */
+
+#include <common.h>
+#include <config.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/types.h>
+#include <asm/io.h>
+#include <asm/errno.h>
+
+#include "prcmu-fw.h"
+
+/* CPU mailbox registers */
+#define PRCM_MBOX_CPU_VAL (U8500_PRCMU_BASE + 0x0fc)
+#define PRCM_MBOX_CPU_SET (U8500_PRCMU_BASE + 0x100)
+#define PRCM_MBOX_CPU_CLR (U8500_PRCMU_BASE + 0x104)
+
+static int prcmu_is_ready(void)
+{
+	int ready = readb(PRCM_XP70_CUR_PWR_STATE) == AP_EXECUTE;
+	if (!ready)
+		printf("PRCMU firmware not ready\n");
+	return ready;
+}
+
+static int _wait_for_req_complete(int num)
+{
+	int timeout = 1000;
+
+	/* checking any already on-going transaction */
+	while ((readl(PRCM_MBOX_CPU_VAL) & (1 << num)) && timeout--)
+		;
+
+	timeout = 1000;
+
+	/* Set an interrupt to XP70 */
+	writel(1 << num, PRCM_MBOX_CPU_SET);
+
+	while ((readl(PRCM_MBOX_CPU_VAL) & (1 << num)) && timeout--)
+		;
+
+	if (!timeout) {
+		printf("PRCMU operation timed out\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+/**
+ * prcmu_i2c_read - PRCMU - 4500 communication using PRCMU I2C
+ * @reg: - db8500 register bank to be accessed
+ * @slave:  - db8500 register to be accessed
+ * Returns: ACK_MB5  value containing the status
+ */
+int prcmu_i2c_read(u8 reg, u16 slave)
+{
+	uint8_t i2c_status;
+	uint8_t i2c_val;
+
+	if (!prcmu_is_ready())
+		return -1;
+
+	debug("\nprcmu_4500_i2c_read:bank=%x;reg=%x;\n",
+			reg, slave);
+
+	/* prepare the data for mailbox 5 */
+	writeb((reg << 1) | I2CREAD, PRCM_REQ_MB5_I2COPTYPE_REG);
+	writeb((1 << 3) | 0x0, PRCM_REQ_MB5_BIT_FIELDS);
+	writeb(slave, PRCM_REQ_MB5_I2CSLAVE);
+	writeb(0, PRCM_REQ_MB5_I2CVAL);
+
+	_wait_for_req_complete(REQ_MB5);
+
+	/* retrieve values */
+	debug("ack-mb5:transfer status = %x\n",
+			readb(PRCM_ACK_MB5_STATUS));
+	debug("ack-mb5:reg bank = %x\n", readb(PRCM_ACK_MB5) >> 1);
+	debug("ack-mb5:slave_add = %x\n",
+			readb(PRCM_ACK_MB5_SLAVE));
+	debug("ack-mb5:reg_val = %d\n", readb(PRCM_ACK_MB5_VAL));
+
+	i2c_status = readb(PRCM_ACK_MB5_STATUS);
+	i2c_val = readb(PRCM_ACK_MB5_VAL);
+
+	if (i2c_status == I2C_RD_OK)
+		return i2c_val;
+	else {
+
+		printf("prcmu_i2c_read:read return status= %d\n",
+				i2c_status);
+		return -1;
+	}
+
+}
+
+/**
+ * prcmu_i2c_write - PRCMU-db8500 communication using PRCMU I2C
+ * @reg: - db8500 register bank to be accessed
+ * @slave:  - db800 register to be written to
+ * @reg_data: - the data to write
+ * Returns: ACK_MB5 value containing the status
+ */
+int prcmu_i2c_write(u8 reg, u16 slave, u8 reg_data)
+{
+	uint8_t i2c_status;
+
+	if (!prcmu_is_ready())
+		return -1;
+
+	debug("\nprcmu_4500_i2c_write:bank=%x;reg=%x;\n",
+			reg, slave);
+
+	/* prepare the data for mailbox 5 */
+	writeb((reg << 1) | I2CWRITE, PRCM_REQ_MB5_I2COPTYPE_REG);
+	writeb((1 << 3) | 0x0, PRCM_REQ_MB5_BIT_FIELDS);
+	writeb(slave, PRCM_REQ_MB5_I2CSLAVE);
+	writeb(reg_data, PRCM_REQ_MB5_I2CVAL);
+
+	debug("\ncpu_is_u8500v11\n");
+	_wait_for_req_complete(REQ_MB5);
+
+	/* retrieve values */
+	debug("ack-mb5:transfer status = %x\n",
+			readb(PRCM_ACK_MB5_STATUS));
+	debug("ack-mb5:reg bank = %x\n", readb(PRCM_ACK_MB5) >> 1);
+	debug("ack-mb5:slave_add = %x\n",
+			readb(PRCM_ACK_MB5_SLAVE));
+	debug("ack-mb5:reg_val = %d\n", readb(PRCM_ACK_MB5_VAL));
+
+	i2c_status = readb(PRCM_ACK_MB5_STATUS);
+	debug("\ni2c_status = %x\n", i2c_status);
+	if (i2c_status == I2C_WR_OK)
+		return 0;
+	else {
+		printf("ape-i2c: i2c_status : 0x%x\n", i2c_status);
+		return -1;
+	}
+}
diff --git a/board/st-ericsson/u8500/u8500_href.c b/board/st-ericsson/u8500/u8500_href.c
new file mode 100644
index 0000000..525633e
--- /dev/null
+++ b/board/st-ericsson/u8500/u8500_href.c
@@ -0,0 +1,546 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2009
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <config.h>
+#include <common.h>
+#include <i2c.h>
+#include <asm/types.h>
+#include <asm/io.h>
+#include <asm/errno.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/sys_proto.h>
+#ifdef CONFIG_MMC
+#include "../../../drivers/mmc/arm_pl180_mmci.h"
+#endif
+
+#define NOMADIK_PER4_BASE	(0x80150000)
+#define NOMADIK_BACKUPRAM0_BASE (NOMADIK_PER4_BASE + 0x00000)
+#define NOMADIK_BACKUPRAM1_BASE (NOMADIK_PER4_BASE + 0x01000)
+
+/* Power, Reset, Clock Management Unit */
+/*
+ * SVA: Smart Video Accelerator
+ * SIA: Smart Imaging Accelerator
+ * SGA: Smart Graphic accelerator
+ * B2R2: Graphic blitter
+ */
+#define PRCMU_BASE	CFG_PRCMU_BASE	/* 0x80157000 for U8500 */
+#define PRCM_ARMCLKFIX_MGT_REG		(PRCMU_BASE + 0x000)
+#define PRCM_ACLK_MGT_REG		(PRCMU_BASE + 0x004)
+#define PRCM_SVAMMDSPCLK_MGT_REG	(PRCMU_BASE + 0x008)
+#define PRCM_SIAMMDSPCLK_MGT_REG	(PRCMU_BASE + 0x00C)
+#define PRCM_SAAMMDSPCLK_MGT_REG	(PRCMU_BASE + 0x010)
+#define PRCM_SGACLK_MGT_REG		(PRCMU_BASE + 0x014)
+#define PRCM_UARTCLK_MGT_REG		(PRCMU_BASE + 0x018)
+#define PRCM_MSPCLK_MGT_REG		(PRCMU_BASE + 0x01C)
+#define PRCM_I2CCLK_MGT_REG		(PRCMU_BASE + 0x020)
+#define PRCM_SDMMCCLK_MGT_REG		(PRCMU_BASE + 0x024)
+#define PRCM_SLIMCLK_MGT_REG		(PRCMU_BASE + 0x028)
+#define PRCM_PER1CLK_MGT_REG		(PRCMU_BASE + 0x02C)
+#define PRCM_PER2CLK_MGT_REG		(PRCMU_BASE + 0x030)
+#define PRCM_PER3CLK_MGT_REG		(PRCMU_BASE + 0x034)
+#define PRCM_PER5CLK_MGT_REG		(PRCMU_BASE + 0x038)
+#define PRCM_PER6CLK_MGT_REG		(PRCMU_BASE + 0x03C)
+#define PRCM_PER7CLK_MGT_REG		(PRCMU_BASE + 0x040)
+#define PRCM_DMACLK_MGT_REG		(PRCMU_BASE + 0x074)
+#define PRCM_B2R2CLK_MGT_REG		(PRCMU_BASE + 0x078)
+
+#define PRCM_PLLSOC0_FREQ_REG		(PRCMU_BASE + 0x080)
+#define PRCM_PLLSOC1_FREQ_REG		(PRCMU_BASE + 0x084)
+#define PRCM_PLLARM_FREQ_REG		(PRCMU_BASE + 0x088)
+#define PRCM_PLLDDR_FREQ_REG		(PRCMU_BASE + 0x08C)
+#define PRCM_ARM_CHGCLKREQ_REG		(PRCMU_BASE + 0x114)
+
+#define PRCM_TCR			(PRCMU_BASE + 0x1C8)
+
+/*
+ * Memory controller register
+ */
+#define DMC_BASE_ADDR			0x80156000
+#define DMC_CTL_97			(DMC_BASE_ADDR + 0x184)
+
+int board_id;	/* set in board_late_init() */
+
+/* PLLs for clock management registers */
+enum {
+	GATED = 0,
+	PLLSOC0,	/* pllsw = 001, ffs() = 1 */
+	PLLSOC1,	/* pllsw = 010, ffs() = 2 */
+	PLLDDR,		/* pllsw = 100, ffs() = 3 */
+	PLLARM,
+};
+
+static struct pll_freq_regs {
+	int idx;	/* index fror pll_name and pll_khz arrays */
+	uint32_t addr;
+} pll_freq_regs[] = {
+	{PLLSOC0, PRCM_PLLSOC0_FREQ_REG},
+	{PLLSOC1, PRCM_PLLSOC1_FREQ_REG},
+	{PLLDDR, PRCM_PLLDDR_FREQ_REG},
+	{PLLARM, PRCM_PLLARM_FREQ_REG},
+	{0, 0},
+};
+
+static const char *pll_name[5] = {"GATED", "SOC0", "SOC1", "DDR", "ARM"};
+static uint32_t pll_khz[5];	/* use ffs(pllsw(reg)) as index for 0..3 */
+
+static struct clk_mgt_regs {
+	uint32_t addr;
+	uint32_t val;
+	const char *descr;
+} clk_mgt_regs[] = {
+	/* register content taken from bootrom settings */
+	{PRCM_ARMCLKFIX_MGT_REG, 0x0120, "ARMCLKFIX"}, /* ena, SOC0/0, ??? */
+	{PRCM_ACLK_MGT_REG, 0x0125, "ACLK"},	/* ena, SOC0/5, 160 MHz */
+	{PRCM_SVAMMDSPCLK_MGT_REG, 0x1122, "SVA"}, /* ena, SOC0/2, 400 MHz */
+	{PRCM_SIAMMDSPCLK_MGT_REG, 0x0022, "SIA"}, /* dis, SOC0/2, 400 MHz */
+	{PRCM_SAAMMDSPCLK_MGT_REG, 0x0822, "SAA"}, /* dis, SOC0/4, 200 MHz */
+	{PRCM_SGACLK_MGT_REG, 0x0024, "SGA"},	/* dis, SOC0/4, 200 MHz */
+	{PRCM_UARTCLK_MGT_REG, 0x0300, "UART"},	/* ena, GATED, CLK38 */
+	{PRCM_MSPCLK_MGT_REG, 0x0200, "MSP"},	/* dis, GATED, CLK38 */
+	{PRCM_I2CCLK_MGT_REG, 0x0130, "I2C"},	/* ena, SOC0/16, 50 MHz */
+	{PRCM_SDMMCCLK_MGT_REG, 0x0130, "SDMMC"}, /* ena, SOC0/16, 50 MHz */
+	{PRCM_PER1CLK_MGT_REG, 0x126, "PER1"},	/* ena, SOC0/6, 133 MHz */
+	{PRCM_PER2CLK_MGT_REG, 0x126, "PER2"},	/* ena, SOC0/6, 133 MHz */
+	{PRCM_PER3CLK_MGT_REG, 0x126, "PER3"},	/* ena, SOC0/6, 133 MHz */
+	{PRCM_PER5CLK_MGT_REG, 0x126, "PER5"},	/* ena, SOC0/6, 133 MHz */
+	{PRCM_PER6CLK_MGT_REG, 0x126, "PER6"},	/* ena, SOC0/6, 133 MHz */
+	{PRCM_PER7CLK_MGT_REG, 0x128, "PER7"},	/* ena, SOC0/8, 100 MHz */
+	{PRCM_DMACLK_MGT_REG, 0x125, "DMA"},	/* ena, SOC0/5, 160 MHz */
+	{PRCM_B2R2CLK_MGT_REG, 0x025, "B2R2"},	/* dis, SOC0/5, 160 MHz */
+	{0, 0, NULL},
+};
+
+static void init_regs(void);
+
+DECLARE_GLOBAL_DATA_PTR;
+#if defined(CONFIG_SHOW_BOOT_PROGRESS)
+void show_boot_progress(int progress)
+{
+	printf("Boot reached stage %d\n", progress);
+}
+#endif
+
+static unsigned int read_asicid(void)
+{
+	unsigned int *address = (void *)U8500_BOOTROM_BASE
+				+ U8500_BOOTROM_ASIC_ID_OFFSET;
+	return readl(address);
+}
+
+int cpu_is_u8500v11(void)
+{
+	return read_asicid() == 0x008500A1;
+}
+
+/*
+ * Miscellaneous platform dependent initialisations
+ */
+
+int board_early_init_f(void)
+{
+	init_regs();
+	return 0;
+}
+
+int board_init(void)
+{
+	uint32_t unused_cols_rows;
+	unsigned int nrows;
+	unsigned int ncols;
+
+	gd->bd->bi_arch_number = 0x1A4;
+	gd->bd->bi_boot_params = 0x00000100;
+	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
+
+	/*
+	 * Assumption: 2 CS active, both CS have same layout.
+	 *             15 rows max, 11 cols max (controller spec).
+	 *             memory chip has 8 banks, I/O width 32 bit.
+	 * The correct way would be to read MR#8: I/O width and density,
+	 * but this requires locking against the PRCMU firmware.
+	 * Simplified approach:
+	 * Read number of unused rows and columns from mem controller.
+	 * size = nCS x 2^(rows+cols) x nbanks x buswidth_bytes
+	 */
+	unused_cols_rows = readl(DMC_CTL_97);
+	nrows = 15 - (unused_cols_rows & 0x07);
+	ncols = 11 - ((unused_cols_rows & 0x0700) >> 8);
+	gd->bd->bi_dram[0].size = 2 * (1 << (nrows + ncols)) * 8 * 4;
+
+	icache_enable();
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	gd->ram_size = PHYS_SDRAM_SIZE_1;
+
+	return 0;
+}
+
+unsigned int addr_vall_arr[] = {
+	0x8011F000, 0x0000FFFF, /* Clocks for HSI TODO: Enable reqd only */
+	0x8011F008, 0x00001CFF, /* Clocks for HSI TODO: Enable reqd only */
+	0x8000F000, 0x00007FFF, /* Clocks for I2C TODO: Enable reqd only */
+	0x8000F008, 0x00007FFF, /* Clocks for I2C TODO: Enable reqd only */
+	0x80157020, 0x00000150, /* I2C 48MHz clock */
+	0x8012F000, 0x00007FFF, /* Clocks for SD TODO: Enable reqd only */
+	0x8012F008, 0x00007FFF, /* Clocks for SD TODO: Enable reqd only */
+	0xA03DF000, 0x0000000D, /* Clock for MTU Timers */
+	0x8011E00C, 0x00000000, /* GPIO ALT FUNC for EMMC */
+	0x8011E004, 0x0000FFE0, /* GPIO ALT FUNC for EMMC */
+	0x8011E020, 0x0000FFE0, /* GPIO ALT FUNC for EMMC */
+	0x8011E024, 0x00000000, /* GPIO ALT FUNC for EMMC */
+	0x8012E000, 0x20000000, /* GPIO ALT FUNC for UART */
+	0x8012E00C, 0x00000000, /* GPIO ALT FUNC for SD */
+	0x8012E004, 0x0FFC0000, /* GPIO ALT FUNC for SD */
+	0x8012E020, 0x60000000, /* GPIO ALT FUNC for SD */
+	0x8012E024, 0x60000000, /* GPIO ALT FUNC for SD */
+	0x801571E4, 0x0000000C, /* PRCMU settings for B2R2,
+				   PRCM_APE_RESETN_SET_REG */
+	0x80157024, 0x00000130, /* PRCMU settings for EMMC/SD */
+	0xA03FF000, 0x00000003, /* USB */
+	0xA03FF008, 0x00000001, /* USB */
+	0xA03FE00C, 0x00000000, /* USB */
+	0xA03FE020, 0x00000FFF, /* USB */
+	0xA03FE024, 0x00000000	/* USB */
+};
+
+#ifdef BOARD_LATE_INIT
+#ifdef CONFIG_MMC
+
+#define LDO_VAUX3_MASK		0x3
+#define LDO_VAUX3_ENABLE	0x1
+#define VAUX3_VOLTAGE_2_9V	0xd
+
+#define AB8500_REGU_CTRL2	0x4
+#define AB8500_REGU_VRF1VAUX3_REGU_REG	0x040A
+#define AB8500_REGU_VRF1VAUX3_SEL_REG	0x0421
+
+static int hrefplus_mmc_power_init(void)
+{
+	int ret;
+	int val;
+
+	if (!cpu_is_u8500v11())
+		return 0;
+
+	/*
+	 * On v1.1 HREF boards (HREF+), Vaux3 needs to be enabled for the SD
+	 * card to work.  This is done by enabling the regulators in the AB8500
+	 * via PRCMU I2C transactions.
+	 *
+	 * This code is derived from the handling of AB8500_LDO_VAUX3 in
+	 * ab8500_ldo_enable() and ab8500_ldo_disable() in Linux.
+	 *
+	 * Turn off and delay is required to have it work across soft reboots.
+	 */
+
+	ret = prcmu_i2c_read(AB8500_REGU_CTRL2, AB8500_REGU_VRF1VAUX3_REGU_REG);
+	if (ret < 0)
+		goto out;
+
+	val = ret;
+
+	/* Turn off */
+	ret = prcmu_i2c_write(AB8500_REGU_CTRL2, AB8500_REGU_VRF1VAUX3_REGU_REG,
+				val & ~LDO_VAUX3_MASK);
+	if (ret < 0)
+		goto out;
+
+	udelay(10 * 1000);
+
+	/* Set the voltage to 2.9V */
+	ret = prcmu_i2c_write(AB8500_REGU_CTRL2,
+				AB8500_REGU_VRF1VAUX3_SEL_REG,
+				VAUX3_VOLTAGE_2_9V);
+	if (ret < 0)
+		goto out;
+
+	val = val & ~LDO_VAUX3_MASK;
+	val = val | LDO_VAUX3_ENABLE;
+
+	/* Turn on the supply */
+	ret = prcmu_i2c_write(AB8500_REGU_CTRL2,
+				AB8500_REGU_VRF1VAUX3_REGU_REG, val);
+
+out:
+	return ret;
+}
+#endif
+/*
+ * called after all initialisation were done, but before the generic
+ * mmc_initialize().
+ */
+int board_late_init(void)
+{
+	uchar byte;
+
+	/*
+	 * Determine and set board_id environment variable
+	 * 0: mop500, 1: href500
+	 * Above boards have different GPIO expander chips which we can
+	 * distinguish by the chip id.
+	 *
+	 * The board_id environment variable is needed for the Linux bootargs.
+	 */
+	(void) i2c_set_bus_num(0);
+	(void) i2c_read(CONFIG_SYS_I2C_GPIOE_ADDR, 0x80, 1, &byte, 1);
+	if (byte == 0x01) {
+		board_id = 0;
+		setenv("board_id", "0");
+	} else {
+		board_id = 1;
+		setenv("board_id", "1");
+	}
+#ifdef CONFIG_MMC
+	hrefplus_mmc_power_init();
+
+	/*
+	 * config extended GPIO pins for level shifter and
+	 * SDMMC_ENABLE
+	 */
+	if (board_id == 0) {
+		/* MOP500 */
+		byte = 0x0c;
+		(void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0x89, 1, &byte, 1);
+		(void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0x83, 1, &byte, 1);
+	} else {
+		/* HREF */
+		/* set the direction of GPIO KPY9 and KPY10 */
+		byte = 0x06;
+		(void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0xC8, 1, &byte, 1);
+		/* must be a multibyte access */
+		(void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0xC4, 1,
+						(uchar []) {0x06, 0x06}, 2);
+	}
+#endif /* CONFIG_MMC */
+	/*
+	 * Create a memargs variable which points uses either the memargs256 or
+	 * memargs512 environment variable, depending on the memory size.
+	 * memargs is used to build the bootargs, memargs256 and memargs512 are
+	 * stored in the environment.
+	 */
+	if (gd->bd->bi_dram[0].size == 0x10000000) {
+		setenv("memargs", "setenv bootargs ${bootargs} ${memargs256}");
+		setenv("mem", "256M");
+	} else {
+		setenv("memargs", "setenv bootargs ${bootargs} ${memargs512}");
+		setenv("mem", "512M");
+	}
+
+	return 0;
+}
+#endif /* BOARD_LATE_INIT */
+
+static void early_gpio_setup(struct gpio_register *gpio_reg, u32 bits)
+{
+	writel(readl(&gpio_reg->gpio_dats) | bits, &gpio_reg->gpio_dats);
+	writel(readl(&gpio_reg->gpio_pdis) & ~bits, &gpio_reg->gpio_pdis);
+}
+
+static void init_regs(void)
+{
+	/* FIXME Remove magic register array settings for ED also */
+	struct prcmu *prcmu = (struct prcmu *) U8500_PRCMU_BASE;
+
+	/* Enable timers */
+	writel(1 << 17, &prcmu->tcr);
+
+	u8500_prcmu_enable(&prcmu->per1clk_mgt);
+	u8500_prcmu_enable(&prcmu->per2clk_mgt);
+	u8500_prcmu_enable(&prcmu->per3clk_mgt);
+	u8500_prcmu_enable(&prcmu->per5clk_mgt);
+	u8500_prcmu_enable(&prcmu->per6clk_mgt);
+	u8500_prcmu_enable(&prcmu->per7clk_mgt);
+
+	u8500_prcmu_enable(&prcmu->uartclk_mgt);
+	u8500_prcmu_enable(&prcmu->i2cclk_mgt);
+
+	u8500_prcmu_enable(&prcmu->sdmmcclk_mgt);
+
+	u8500_clock_enable(1, 9, -1);	/* GPIO0 */
+
+	u8500_clock_enable(2, 11, -1);	/* GPIO1 */
+
+	u8500_clock_enable(3, 8, -1);	/* GPIO2 */
+	u8500_clock_enable(5, 1, -1);	/* GPIO3 */
+
+	u8500_clock_enable(3, 6, 6);	/* UART2 */
+
+	gpio_altfuncenable(GPIO_ALT_I2C_0, "I2C0");
+	u8500_clock_enable(3, 3, 3);	/* I2C0 */
+
+	early_gpio_setup((struct gpio_register *)U8500_GPIO_0_BASE, 0x60000000);
+	gpio_altfuncenable(GPIO_ALT_UART_2, "UART2");
+
+	early_gpio_setup((struct gpio_register *)U8500_GPIO_6_BASE, 0x0000ffe0);
+	gpio_altfuncenable(GPIO_ALT_EMMC, "EMMC");
+
+	early_gpio_setup((struct gpio_register *)U8500_GPIO_0_BASE, 0x0000ffe0);
+	gpio_altfuncenable(GPIO_ALT_SD_CARD0, "SDCARD");
+
+	u8500_clock_enable(1, 5, 5);	/* SDI0 */
+	u8500_clock_enable(2, 4, 2);	/* SDI4 */
+
+	u8500_clock_enable(6, 7, -1);	/* MTU0 */
+	u8500_clock_enable(3, 4, 4);	/* SDI2 */
+
+	early_gpio_setup((struct gpio_register *)U8500_GPIO_4_BASE, 0x000007ff);
+	gpio_altfuncenable(GPIO_ALT_POP_EMMC, "EMMC");
+
+	/*
+	 * Enabling clocks for all devices which are AMBA devices in the
+	 * kernel.  Otherwise they will not get probe()'d because the
+	 * peripheral ID register will not be powered.
+	 */
+
+	/* XXX: some of these differ between ED/V1 */
+
+	u8500_clock_enable(1, 1, 1);	/* UART1 */
+	u8500_clock_enable(1, 0, 0);	/* UART0 */
+
+	u8500_clock_enable(3, 2, 2);	/* SSP1 */
+	u8500_clock_enable(3, 1, 1);	/* SSP0 */
+
+	u8500_clock_enable(2, 8, -1);	/* SPI0 */
+	u8500_clock_enable(2, 5, 3);	/* MSP2 */
+}
+
+#ifdef CONFIG_MMC
+static int u8500_mmci_board_init(void)
+{
+	enum gpio_error error;
+	struct gpio_register *gpio_base_address;
+
+	gpio_base_address = (void *)(U8500_GPIO_0_BASE);
+	gpio_base_address->gpio_dats |= 0xFFC0000;
+	gpio_base_address->gpio_pdis &= ~0xFFC0000;
+
+	/* save the GPIO0 AFSELA register */
+	error = gpio_altfuncenable(GPIO_ALT_SD_CARD0, "MMC");
+	if (error != GPIO_OK) {
+		printf("u8500_mmci_board_init() gpio_altfuncenable failed\n");
+		return -ENODEV;
+	}
+	return 0;
+}
+
+int board_mmc_init(bd_t *bd)
+{
+	if (u8500_mmci_board_init())
+		return -ENODEV;
+
+	if (arm_pl180_mmci_init())
+		return -ENODEV;
+	return 0;
+}
+#endif
+
+
+/*
+ * get_pll_freq_khz - return PLL frequency in kHz
+ */
+static uint32_t get_pll_freq_khz(uint32_t inclk_khz, uint32_t freq_reg)
+{
+	uint32_t idf, ldf, odf, seldiv, phi;
+
+	/*
+	 * PLLOUTCLK = PHI = (INCLK*LDF)/(2*ODF*IDF) if SELDIV2=0
+	 * PLLOUTCLK = PHI = (INCLK*LDF)/(4*ODF*IDF) if SELDIV2=1
+	 * where:
+	 * IDF=R(2:0) (when R=000, IDF=1d)
+	 * LDF = 2*D(7:0) (D must be greater than or equal to 6)
+	 * ODF = N(5:0) (when N=000000, 0DF=1d)
+	 */
+
+	idf = (freq_reg & 0x70000) >> 16;
+	ldf = (freq_reg & 0xff) * 2;
+	odf = (freq_reg & 0x3f00) >> 8;
+	seldiv = (freq_reg & 0x01000000) >> 24;
+	phi = (inclk_khz * ldf) / (2 * odf * idf);
+	if (seldiv)
+		phi = phi/2;
+
+	return phi;
+}
+
+int do_clkinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	uint32_t inclk_khz;
+	uint32_t reg, phi;
+	uint32_t clk_khz;
+	unsigned int clk_sel;
+	struct clk_mgt_regs *clks = clk_mgt_regs;
+	struct pll_freq_regs *plls = pll_freq_regs;
+
+	/*
+	 * Go through list of PLLs.
+	 * Initialise pll out frequency array (pll_khz) and print frequency.
+	 */
+	inclk_khz = 38400;	/* 38.4 MHz */
+	while (plls->addr) {
+		reg = readl(plls->addr);
+		phi = get_pll_freq_khz(inclk_khz, reg);
+		pll_khz[plls->idx] = phi;
+		printf("%s PLL out frequency: %d.%d Mhz\n",
+				pll_name[plls->idx], phi/1000, phi % 1000);
+		plls++;
+	}
+
+	/* check ARM clock source */
+	reg = readl(PRCM_ARM_CHGCLKREQ_REG);
+	printf("A9 running on %s\n",
+		(reg & 1) ?  "external clock" : "ARM PLL");
+
+	/* go through list of clk_mgt_reg */
+	printf("\n%19s %9s %7s %9s enabled\n",
+			"name(addr)", "value", "PLL", "CLK[MHz]");
+	while (clks->addr) {
+		reg = readl(clks->addr);
+
+		/* convert bit position into array index */
+		clk_sel = ffs((reg >> 5) & 0x7);	/* PLLSW[2:0] */
+
+		if (reg & 0x200)
+			clk_khz = 38400;	/* CLK38 is set */
+		else if ((reg & 0x1f) == 0)
+			/* ARMCLKFIX_MGT is 0x120, e.g. div = 0 ! */
+			clk_khz = 0;
+		else
+			clk_khz = pll_khz[clk_sel] / (reg & 0x1f);
+
+		printf("%9s(%08x): %08x, %6s, %4d.%03d, %s\n",
+			clks->descr, clks->addr, reg, pll_name[clk_sel],
+			clk_khz / 1000, clk_khz % 1000,
+			(reg & 0x100) ? "ena" : "dis");
+		clks++;
+	}
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	clkinfo,	1,	1,	do_clkinfo,
+	"print clock info",
+	""
+);