Merge branch 'u-boot-imx/master' into 'u-boot-arm/master'

Conflicts:
	drivers/mtd/nand/mxc_nand_spl.c
	include/configs/m28evk.h

16 files changed, 255 insertions, 521 deletions

diff --git a/arch/arm/cpu/arm1136/mx35/Makefile b/arch/arm/cpu/arm1136/mx35/Makefile
index f4ababb..23adac0 100644
--- a/arch/arm/cpu/arm1136/mx35/Makefile
+++ b/arch/arm/cpu/arm1136/mx35/Makefile
@@ -29,7 +29,6 @@ LIB	= $(obj)lib$(SOC).o
 
 COBJS	+= generic.o
 COBJS	+= timer.o
-COBJS	+= iomux.o
 COBJS	+= mx35_sdram.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
diff --git a/arch/arm/cpu/arm1136/mx35/iomux.c b/arch/arm/cpu/arm1136/mx35/iomux.c
deleted file mode 100644
index a302575..0000000
--- a/arch/arm/cpu/arm1136/mx35/iomux.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
- * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
- *
- * 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/io.h>
-#include <asm/arch/imx-regs.h>
-#include <asm/arch/mx35_pins.h>
-#include <asm/arch/iomux.h>
-
-/*
- * IOMUX register (base) addresses
- */
-enum iomux_reg_addr {
-	IOMUXGPR = IOMUXC_BASE_ADDR,			/* General purpose */
-	IOMUXSW_MUX_CTL = IOMUXC_BASE_ADDR + 4,		/* MUX control */
-	IOMUXSW_MUX_END = IOMUXC_BASE_ADDR + 0x324,	/* last MUX control */
-	IOMUXSW_PAD_CTL = IOMUXC_BASE_ADDR + 0x328,	/* Pad control */
-	IOMUXSW_PAD_END = IOMUXC_BASE_ADDR + 0x794,	/* last Pad control */
-	IOMUXSW_INPUT_CTL = IOMUXC_BASE_ADDR + 0x7AC,	/* input select */
-	IOMUXSW_INPUT_END = IOMUXC_BASE_ADDR + 0x9F4,	/* last input select */
-};
-
-#define MUX_PIN_NUM_MAX		\
-		(((IOMUXSW_PAD_END - IOMUXSW_PAD_CTL) >> 2) + 1)
-#define MUX_INPUT_NUM_MUX	\
-		(((IOMUXSW_INPUT_END - IOMUXSW_INPUT_CTL) >> 2) + 1)
-
-/*
- * Request ownership for an IO pin. This function has to be the first one
- * being called before that pin is used.
- */
-void mxc_request_iomux(iomux_pin_name_t pin, iomux_pin_cfg_t cfg)
-{
-	u32 mux_reg = PIN_TO_IOMUX_MUX(pin);
-
-	if (mux_reg != NON_MUX_I) {
-		mux_reg += IOMUXGPR;
-		writel(cfg, mux_reg);
-	}
-}
-
-/*
- * Release ownership for an IO pin
- */
-void mxc_free_iomux(iomux_pin_name_t pin, iomux_pin_cfg_t cfg)
-{
-}
-
-/*
- * This function configures the pad value for a IOMUX pin.
- *
- * @param  pin     a pin number as defined in iomux_pin_name_t
- * @param  config  the ORed value of elements defined in iomux_pad_config_t
- */
-void mxc_iomux_set_pad(iomux_pin_name_t pin, u32 config)
-{
-	u32 pad_reg = IOMUXGPR + PIN_TO_IOMUX_PAD(pin);
-
-	writel(config, pad_reg);
-}
-
-/*
- * This function enables/disables the general purpose function for a particular
- * signal.
- *
- * @param  gp   one signal as defined in iomux_gp_func_t
- * @param  en   enable/disable
- */
-void mxc_iomux_set_gpr(iomux_gp_func_t gp, int en)
-{
-	u32 l;
-
-	l = readl(IOMUXGPR);
-	if (en)
-		l |= gp;
-	else
-		l &= ~gp;
-
-	writel(l, IOMUXGPR);
-}
-
-/*
- * This function configures input path.
- *
- * @param input index of input select register as defined in
- *			iomux_input_select_t
- * @param config the binary value of elements defined in
- *			iomux_input_config_t
- */
-void mxc_iomux_set_input(iomux_input_select_t input, u32 config)
-{
-	u32 reg = IOMUXSW_INPUT_CTL + (input << 2);
-
-	writel(config, reg);
-}
diff --git a/arch/arm/cpu/arm926ejs/mx25/generic.c b/arch/arm/cpu/arm926ejs/mx25/generic.c
index 679273b..7cbbe65 100644
--- a/arch/arm/cpu/arm926ejs/mx25/generic.c
+++ b/arch/arm/cpu/arm926ejs/mx25/generic.c
@@ -27,7 +27,6 @@
 #include <netdev.h>
 #include <asm/io.h>
 #include <asm/arch/imx-regs.h>
-#include <asm/arch/imx25-pinmux.h>
 #include <asm/arch/clock.h>
 
 #ifdef CONFIG_FSL_ESDHC
@@ -248,123 +247,7 @@ int cpu_mmc_init(bd_t *bis)
 }
 #endif
 
-#ifdef CONFIG_MXC_UART
-void mx25_uart1_init_pins(void)
-{
-	struct iomuxc_mux_ctl *muxctl;
-	struct iomuxc_pad_ctl *padctl;
-	u32 inpadctl;
-	u32 outpadctl;
-	u32 muxmode0;
-
-	muxctl = (struct iomuxc_mux_ctl *)IMX_IOPADMUX_BASE;
-	padctl = (struct iomuxc_pad_ctl *)IMX_IOPADCTL_BASE;
-	muxmode0 = MX25_PIN_MUX_MODE(0);
-	/*
-	 * set up input pins with hysteresis and 100K pull-ups
-	 */
-	inpadctl = MX25_PIN_PAD_CTL_HYS
-	    | MX25_PIN_PAD_CTL_PKE
-	    | MX25_PIN_PAD_CTL_PUE | MX25_PIN_PAD_CTL_100K_PU;
-
-	/*
-	 * set up output pins with 100K pull-downs
-	 * FIXME: need to revisit this
-	 *      PUE is ignored if PKE is not set
-	 *      so the right value here is likely
-	 *        0x0 for no pull up/down
-	 *      or
-	 *        0xc0 for 100k pull down
-	 */
-	outpadctl = MX25_PIN_PAD_CTL_PUE | MX25_PIN_PAD_CTL_100K_PD;
-
-	/* UART1 */
-	/* rxd */
-	writel(muxmode0, &muxctl->pad_uart1_rxd);
-	writel(inpadctl, &padctl->pad_uart1_rxd);
-
-	/* txd */
-	writel(muxmode0, &muxctl->pad_uart1_txd);
-	writel(outpadctl, &padctl->pad_uart1_txd);
-
-	/* rts */
-	writel(muxmode0, &muxctl->pad_uart1_rts);
-	writel(outpadctl, &padctl->pad_uart1_rts);
-
-	/* cts */
-	writel(muxmode0, &muxctl->pad_uart1_cts);
-	writel(inpadctl, &padctl->pad_uart1_cts);
-}
-#endif /* CONFIG_MXC_UART */
-
 #ifdef CONFIG_FEC_MXC
-void mx25_fec_init_pins(void)
-{
-	struct iomuxc_mux_ctl *muxctl;
-	struct iomuxc_pad_ctl *padctl;
-	u32 inpadctl_100kpd;
-	u32 inpadctl_22kpu;
-	u32 outpadctl;
-	u32 muxmode0;
-
-	muxctl = (struct iomuxc_mux_ctl *)IMX_IOPADMUX_BASE;
-	padctl = (struct iomuxc_pad_ctl *)IMX_IOPADCTL_BASE;
-	muxmode0 = MX25_PIN_MUX_MODE(0);
-	inpadctl_100kpd = MX25_PIN_PAD_CTL_HYS
-	    | MX25_PIN_PAD_CTL_PKE
-	    | MX25_PIN_PAD_CTL_PUE | MX25_PIN_PAD_CTL_100K_PD;
-	inpadctl_22kpu = MX25_PIN_PAD_CTL_HYS
-	    | MX25_PIN_PAD_CTL_PKE
-	    | MX25_PIN_PAD_CTL_PUE | MX25_PIN_PAD_CTL_22K_PU;
-	/*
-	 * set up output pins with 100K pull-downs
-	 * FIXME: need to revisit this
-	 *      PUE is ignored if PKE is not set
-	 *      so the right value here is likely
-	 *        0x0 for no pull
-	 *      or
-	 *        0xc0 for 100k pull down
-	 */
-	outpadctl = MX25_PIN_PAD_CTL_PUE | MX25_PIN_PAD_CTL_100K_PD;
-
-	/* FEC_TX_CLK */
-	writel(muxmode0, &muxctl->pad_fec_tx_clk);
-	writel(inpadctl_100kpd, &padctl->pad_fec_tx_clk);
-
-	/* FEC_RX_DV */
-	writel(muxmode0, &muxctl->pad_fec_rx_dv);
-	writel(inpadctl_100kpd, &padctl->pad_fec_rx_dv);
-
-	/* FEC_RDATA0 */
-	writel(muxmode0, &muxctl->pad_fec_rdata0);
-	writel(inpadctl_100kpd, &padctl->pad_fec_rdata0);
-
-	/* FEC_TDATA0 */
-	writel(muxmode0, &muxctl->pad_fec_tdata0);
-	writel(outpadctl, &padctl->pad_fec_tdata0);
-
-	/* FEC_TX_EN */
-	writel(muxmode0, &muxctl->pad_fec_tx_en);
-	writel(outpadctl, &padctl->pad_fec_tx_en);
-
-	/* FEC_MDC */
-	writel(muxmode0, &muxctl->pad_fec_mdc);
-	writel(outpadctl, &padctl->pad_fec_mdc);
-
-	/* FEC_MDIO */
-	writel(muxmode0, &muxctl->pad_fec_mdio);
-	writel(inpadctl_22kpu, &padctl->pad_fec_mdio);
-
-	/* FEC_RDATA1 */
-	writel(muxmode0, &muxctl->pad_fec_rdata1);
-	writel(inpadctl_100kpd, &padctl->pad_fec_rdata1);
-
-	/* FEC_TDATA1 */
-	writel(muxmode0, &muxctl->pad_fec_tdata1);
-	writel(outpadctl, &padctl->pad_fec_tdata1);
-
-}
-
 void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
 {
 	int i;
diff --git a/arch/arm/cpu/arm926ejs/mxs/Makefile b/arch/arm/cpu/arm926ejs/mxs/Makefile
index eeecf89..038c1c1 100644
--- a/arch/arm/cpu/arm926ejs/mxs/Makefile
+++ b/arch/arm/cpu/arm926ejs/mxs/Makefile
@@ -40,6 +40,16 @@ all:	$(obj).depend $(LIB)
 $(LIB):	$(OBJS)
 	$(call cmd_link_o_target, $(OBJS))
 
+# Specify the target for use in elftosb call
+ELFTOSB_TARGET-$(CONFIG_MX23) = imx23
+ELFTOSB_TARGET-$(CONFIG_MX28) = imx28
+
+$(OBJTREE)/u-boot.bd: $(SRCTREE)/$(CPUDIR)/$(SOC)/u-boot-$(ELFTOSB_TARGET-y).bd
+	sed "s@OBJTREE@$(OBJTREE)@g" $^ > $@
+
+$(OBJTREE)/u-boot.sb: $(OBJTREE)/u-boot.bin $(OBJTREE)/spl/u-boot-spl.bin $(OBJTREE)/u-boot.bd
+		elftosb -zf $(ELFTOSB_TARGET-y) -c $(OBJTREE)/u-boot.bd -o $(OBJTREE)/u-boot.sb
+
 #########################################################################
 
 # defines $(obj).depend target
diff --git a/arch/arm/cpu/arm926ejs/mxs/clock.c b/arch/arm/cpu/arm926ejs/mxs/clock.c
index 43e7663..f94107f 100644
--- a/arch/arm/cpu/arm926ejs/mxs/clock.c
+++ b/arch/arm/cpu/arm926ejs/mxs/clock.c
@@ -325,6 +325,99 @@ void mxs_set_ssp_busclock(unsigned int bus, uint32_t freq)
 		bus, tgtclk, freq);
 }
 
+void mxs_set_lcdclk(uint32_t freq)
+{
+	struct mxs_clkctrl_regs *clkctrl_regs =
+		(struct mxs_clkctrl_regs *)MXS_CLKCTRL_BASE;
+	uint32_t fp, x, k_rest, k_best, x_best, tk;
+	int32_t k_best_l = 999, k_best_t = 0, x_best_l = 0xff, x_best_t = 0xff;
+
+	if (freq == 0)
+		return;
+
+#if defined(CONFIG_MX23)
+	writel(CLKCTRL_CLKSEQ_BYPASS_PIX, &clkctrl_regs->hw_clkctrl_clkseq_clr);
+#elif defined(CONFIG_MX28)
+	writel(CLKCTRL_CLKSEQ_BYPASS_DIS_LCDIF, &clkctrl_regs->hw_clkctrl_clkseq_clr);
+#endif
+
+	/*
+	 *             /               18 \     1       1
+	 * freq kHz = | 480000000 Hz * --  | * --- * ------
+	 *             \                x /     k     1000
+	 *
+	 *      480000000 Hz   18
+	 *      ------------ * --
+	 *        freq kHz      x
+	 * k = -------------------
+	 *             1000
+	 */
+
+	fp = ((PLL_FREQ_KHZ * 1000) / freq) * 18;
+
+	for (x = 18; x <= 35; x++) {
+		tk = fp / x;
+		if ((tk / 1000 == 0) || (tk / 1000 > 255))
+			continue;
+
+		k_rest = tk % 1000;
+
+		if (k_rest < (k_best_l % 1000)) {
+			k_best_l = tk;
+			x_best_l = x;
+		}
+
+		if (k_rest > (k_best_t % 1000)) {
+			k_best_t = tk;
+			x_best_t = x;
+		}
+	}
+
+	if (1000 - (k_best_t % 1000) > (k_best_l % 1000)) {
+		k_best = k_best_l;
+		x_best = x_best_l;
+	} else {
+		k_best = k_best_t;
+		x_best = x_best_t;
+	}
+
+	k_best /= 1000;
+
+#if defined(CONFIG_MX23)
+	writeb(CLKCTRL_FRAC_CLKGATE,
+		&clkctrl_regs->hw_clkctrl_frac0_set[CLKCTRL_FRAC0_PIX]);
+	writeb(CLKCTRL_FRAC_CLKGATE | (x_best & CLKCTRL_FRAC_FRAC_MASK),
+		&clkctrl_regs->hw_clkctrl_frac0[CLKCTRL_FRAC0_PIX]);
+	writeb(CLKCTRL_FRAC_CLKGATE,
+		&clkctrl_regs->hw_clkctrl_frac0_clr[CLKCTRL_FRAC0_PIX]);
+
+	writel(CLKCTRL_PIX_CLKGATE,
+		&clkctrl_regs->hw_clkctrl_pix_set);
+	clrsetbits_le32(&clkctrl_regs->hw_clkctrl_pix,
+			CLKCTRL_PIX_DIV_MASK | CLKCTRL_PIX_CLKGATE,
+			k_best << CLKCTRL_PIX_DIV_OFFSET);
+
+	while (readl(&clkctrl_regs->hw_clkctrl_pix) & CLKCTRL_PIX_BUSY)
+		;
+#elif defined(CONFIG_MX28)
+	writeb(CLKCTRL_FRAC_CLKGATE,
+		&clkctrl_regs->hw_clkctrl_frac1_set[CLKCTRL_FRAC1_PIX]);
+	writeb(CLKCTRL_FRAC_CLKGATE | (x_best & CLKCTRL_FRAC_FRAC_MASK),
+		&clkctrl_regs->hw_clkctrl_frac1[CLKCTRL_FRAC1_PIX]);
+	writeb(CLKCTRL_FRAC_CLKGATE,
+		&clkctrl_regs->hw_clkctrl_frac1_clr[CLKCTRL_FRAC1_PIX]);
+
+	writel(CLKCTRL_DIS_LCDIF_CLKGATE,
+		&clkctrl_regs->hw_clkctrl_lcdif_set);
+	clrsetbits_le32(&clkctrl_regs->hw_clkctrl_lcdif,
+			CLKCTRL_DIS_LCDIF_DIV_MASK | CLKCTRL_DIS_LCDIF_CLKGATE,
+			k_best << CLKCTRL_DIS_LCDIF_DIV_OFFSET);
+
+	while (readl(&clkctrl_regs->hw_clkctrl_lcdif) & CLKCTRL_DIS_LCDIF_BUSY)
+		;
+#endif
+}
+
 uint32_t mxc_get_clock(enum mxc_clock clk)
 {
 	switch (clk) {
diff --git a/arch/arm/cpu/arm926ejs/mxs/mxs.c b/arch/arm/cpu/arm926ejs/mxs/mxs.c
index e2b4196..a5e388b 100644
--- a/arch/arm/cpu/arm926ejs/mxs/mxs.c
+++ b/arch/arm/cpu/arm926ejs/mxs/mxs.c
@@ -30,7 +30,7 @@
 #include <asm/errno.h>
 #include <asm/io.h>
 #include <asm/arch/clock.h>
-#include <asm/arch/dma.h>
+#include <asm/imx-common/dma.h>
 #include <asm/arch/gpio.h>
 #include <asm/arch/iomux.h>
 #include <asm/arch/imx-regs.h>
@@ -39,12 +39,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-/* 1 second delay should be plenty of time for block reset. */
-#define	RESET_MAX_TIMEOUT	1000000
-
-#define	MXS_BLOCK_SFTRST	(1 << 31)
-#define	MXS_BLOCK_CLKGATE	(1 << 30)
-
 /* Lowlevel init isn't used on i.MX28, so just have a dummy here */
 inline void lowlevel_init(void) {}
 
@@ -82,63 +76,6 @@ void enable_caches(void)
 #endif
 }
 
-int mxs_wait_mask_set(struct mxs_register_32 *reg, uint32_t mask, unsigned
-								int timeout)
-{
-	while (--timeout) {
-		if ((readl(&reg->reg) & mask) == mask)
-			break;
-		udelay(1);
-	}
-
-	return !timeout;
-}
-
-int mxs_wait_mask_clr(struct mxs_register_32 *reg, uint32_t mask, unsigned
-								int timeout)
-{
-	while (--timeout) {
-		if ((readl(&reg->reg) & mask) == 0)
-			break;
-		udelay(1);
-	}
-
-	return !timeout;
-}
-
-int mxs_reset_block(struct mxs_register_32 *reg)
-{
-	/* Clear SFTRST */
-	writel(MXS_BLOCK_SFTRST, &reg->reg_clr);
-
-	if (mxs_wait_mask_clr(reg, MXS_BLOCK_SFTRST, RESET_MAX_TIMEOUT))
-		return 1;
-
-	/* Clear CLKGATE */
-	writel(MXS_BLOCK_CLKGATE, &reg->reg_clr);
-
-	/* Set SFTRST */
-	writel(MXS_BLOCK_SFTRST, &reg->reg_set);
-
-	/* Wait for CLKGATE being set */
-	if (mxs_wait_mask_set(reg, MXS_BLOCK_CLKGATE, RESET_MAX_TIMEOUT))
-		return 1;
-
-	/* Clear SFTRST */
-	writel(MXS_BLOCK_SFTRST, &reg->reg_clr);
-
-	if (mxs_wait_mask_clr(reg, MXS_BLOCK_SFTRST, RESET_MAX_TIMEOUT))
-		return 1;
-
-	/* Clear CLKGATE */
-	writel(MXS_BLOCK_CLKGATE, &reg->reg_clr);
-
-	if (mxs_wait_mask_clr(reg, MXS_BLOCK_CLKGATE, RESET_MAX_TIMEOUT))
-		return 1;
-
-	return 0;
-}
-
 void mx28_fixup_vt(uint32_t start_addr)
 {
 	uint32_t *vt = (uint32_t *)0x20;
diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
index bc2d69c..07db279 100644
--- a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
+++ b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
@@ -110,6 +110,7 @@ __weak void mxs_adjust_memory_params(uint32_t *dram_vals)
 {
 }
 
+#ifdef CONFIG_MX28
 static void initialize_dram_values(void)
 {
 	int i;
@@ -118,15 +119,36 @@ static void initialize_dram_values(void)
 
 	for (i = 0; i < ARRAY_SIZE(dram_vals); i++)
 		writel(dram_vals[i], MXS_DRAM_BASE + (4 * i));
+}
+#else
+static void initialize_dram_values(void)
+{
+	int i;
+
+	mxs_adjust_memory_params(dram_vals);
+
+	/*
+	 * HW_DRAM_CTL27, HW_DRAM_CTL28 and HW_DRAM_CTL35 are not initialized as
+	 * per FSL bootlets code.
+	 *
+	 * mx23 Reference Manual marks HW_DRAM_CTL27 and HW_DRAM_CTL28 as
+	 * "reserved".
+	 * HW_DRAM_CTL8 is setup as the last element.
+	 * So skip the initialization of these HW_DRAM_CTL registers.
+	 */
+	for (i = 0; i < ARRAY_SIZE(dram_vals); i++) {
+		if (i == 8 || i == 27 || i == 28 || i == 35)
+			continue;
+		writel(dram_vals[i], MXS_DRAM_BASE + (4 * i));
+	}
 
-#ifdef CONFIG_MX23
 	/*
 	 * Enable tRAS lockout in HW_DRAM_CTL08 ; it must be the last
 	 * element to be set
 	 */
 	writel((1 << 24), MXS_DRAM_BASE + (4 * 8));
-#endif
 }
+#endif
 
 static void mxs_mem_init_clock(void)
 {
@@ -234,17 +256,9 @@ static void mx23_mem_setup_vddmem(void)
 	struct mxs_power_regs *power_regs =
 		(struct mxs_power_regs *)MXS_POWER_BASE;
 
-	writel((0x10 << POWER_VDDMEMCTRL_TRG_OFFSET) |
-		POWER_VDDMEMCTRL_ENABLE_ILIMIT |
-		POWER_VDDMEMCTRL_ENABLE_LINREG |
-		POWER_VDDMEMCTRL_PULLDOWN_ACTIVE,
-		&power_regs->hw_power_vddmemctrl);
+	clrbits_le32(&power_regs->hw_power_vddmemctrl,
+		POWER_VDDMEMCTRL_ENABLE_ILIMIT);
 
-	early_delay(10000);
-
-	writel((0x10 << POWER_VDDMEMCTRL_TRG_OFFSET) |
-		POWER_VDDMEMCTRL_ENABLE_LINREG,
-		&power_regs->hw_power_vddmemctrl);
 }
 
 static void mx23_mem_init(void)
@@ -267,22 +281,18 @@ static void mx23_mem_init(void)
 
 	initialize_dram_values();
 
-	/* Set START bit in DRAM_CTL16 */
+	/* Set START bit in DRAM_CTL8 */
 	setbits_le32(MXS_DRAM_BASE + 0x20, 1 << 16);
 
 	clrbits_le32(MXS_DRAM_BASE + 0x40, 1 << 17);
 	early_delay(20000);
 
 	/* Adjust EMI port priority. */
-	clrsetbits_le32(0x80020000, 0x1f << 16, 0x8);
+	clrsetbits_le32(0x80020000, 0x1f << 16, 0x2);
 	early_delay(20000);
 
 	setbits_le32(MXS_DRAM_BASE + 0x40, 1 << 19);
 	setbits_le32(MXS_DRAM_BASE + 0x40, 1 << 11);
-
-	/* Wait for bit 10 (DRAM init complete) in DRAM_CTL18 */
-	while (!(readl(MXS_DRAM_BASE + 0x48) & (1 << 10)))
-		;
 }
 #endif
 
diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
index 287c698..21cac7b 100644
--- a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
+++ b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
@@ -687,6 +687,12 @@ static void mxs_power_configure_power_source(void)
 	mxs_init_batt_bo();
 
 	mxs_switch_vddd_to_dcdc_source();
+
+#ifdef CONFIG_MX23
+	/* Fire up the VDDMEM LinReg now that we're all set. */
+	writel(POWER_VDDMEMCTRL_ENABLE_LINREG | POWER_VDDMEMCTRL_ENABLE_ILIMIT,
+		&power_regs->hw_power_vddmemctrl);
+#endif
 }
 
 static void mxs_enable_output_rail_protection(void)
@@ -781,7 +787,11 @@ struct mxs_vddx_cfg {
 static const struct mxs_vddx_cfg mxs_vddio_cfg = {
 	.reg			= &(((struct mxs_power_regs *)MXS_POWER_BASE)->
 					hw_power_vddioctrl),
+#if defined(CONFIG_MX23)
+	.step_mV		= 25,
+#else
 	.step_mV		= 50,
+#endif
 	.lowest_mV		= 2800,
 	.powered_by_linreg	= mxs_get_vddio_power_source_off,
 	.trg_mask		= POWER_VDDIOCTRL_TRG_MASK,
@@ -804,6 +814,21 @@ static const struct mxs_vddx_cfg mxs_vddd_cfg = {
 	.bo_offset_offset	= POWER_VDDDCTRL_BO_OFFSET_OFFSET,
 };
 
+#ifdef CONFIG_MX23
+static const struct mxs_vddx_cfg mxs_vddmem_cfg = {
+	.reg			= &(((struct mxs_power_regs *)MXS_POWER_BASE)->
+					hw_power_vddmemctrl),
+	.step_mV		= 50,
+	.lowest_mV		= 1700,
+	.powered_by_linreg	= NULL,
+	.trg_mask		= POWER_VDDMEMCTRL_TRG_MASK,
+	.bo_irq			= 0,
+	.bo_enirq		= 0,
+	.bo_offset_mask		= 0,
+	.bo_offset_offset	= 0,
+};
+#endif
+
 static void mxs_power_set_vddx(const struct mxs_vddx_cfg *cfg,
 				uint32_t new_target, uint32_t new_brownout)
 {
@@ -821,9 +846,10 @@ static void mxs_power_set_vddx(const struct mxs_vddx_cfg *cfg,
 	cur_target += cfg->lowest_mV;
 
 	adjust_up = new_target > cur_target;
-	powered_by_linreg = cfg->powered_by_linreg();
+	if (cfg->powered_by_linreg)
+		powered_by_linreg = cfg->powered_by_linreg();
 
-	if (adjust_up) {
+	if (adjust_up && cfg->bo_irq) {
 		if (powered_by_linreg) {
 			bo_int = readl(cfg->reg);
 			clrbits_le32(cfg->reg, cfg->bo_enirq);
@@ -864,14 +890,16 @@ static void mxs_power_set_vddx(const struct mxs_vddx_cfg *cfg,
 		cur_target += cfg->lowest_mV;
 	} while (new_target > cur_target);
 
-	if (adjust_up && powered_by_linreg) {
-		writel(cfg->bo_irq, &power_regs->hw_power_ctrl_clr);
-		if (bo_int & cfg->bo_enirq)
-			setbits_le32(cfg->reg, cfg->bo_enirq);
-	}
+	if (cfg->bo_irq) {
+		if (adjust_up && powered_by_linreg) {
+			writel(cfg->bo_irq, &power_regs->hw_power_ctrl_clr);
+			if (bo_int & cfg->bo_enirq)
+				setbits_le32(cfg->reg, cfg->bo_enirq);
+		}
 
-	clrsetbits_le32(cfg->reg, cfg->bo_offset_mask,
-			new_brownout << cfg->bo_offset_offset);
+		clrsetbits_le32(cfg->reg, cfg->bo_offset_mask,
+				new_brownout << cfg->bo_offset_offset);
+	}
 }
 
 static void mxs_setup_batt_detect(void)
@@ -910,7 +938,9 @@ void mxs_power_init(void)
 
 	mxs_power_set_vddx(&mxs_vddio_cfg, 3300, 3150);
 	mxs_power_set_vddx(&mxs_vddd_cfg, 1500, 1000);
-
+#ifdef CONFIG_MX23
+	mxs_power_set_vddx(&mxs_vddmem_cfg, 2500, 1700);
+#endif
 	writel(POWER_CTRL_VDDD_BO_IRQ | POWER_CTRL_VDDA_BO_IRQ |
 		POWER_CTRL_VDDIO_BO_IRQ | POWER_CTRL_VDD5V_DROOP_IRQ |
 		POWER_CTRL_VBUS_VALID_IRQ | POWER_CTRL_BATT_BO_IRQ |
diff --git a/arch/arm/cpu/arm926ejs/mxs/u-boot-imx23.bd b/arch/arm/cpu/arm926ejs/mxs/u-boot-imx23.bd
index 3a51879..8b6c30e 100644
--- a/arch/arm/cpu/arm926ejs/mxs/u-boot-imx23.bd
+++ b/arch/arm/cpu/arm926ejs/mxs/u-boot-imx23.bd
@@ -4,8 +4,8 @@ options {
 }
 
 sources {
-	u_boot_spl="spl/u-boot-spl.bin";
-	u_boot="u-boot.bin";
+	u_boot_spl="OBJTREE/spl/u-boot-spl.bin";
+	u_boot="OBJTREE/u-boot.bin";
 }
 
 section (0) {
diff --git a/arch/arm/cpu/arm926ejs/mxs/u-boot-imx28.bd b/arch/arm/cpu/arm926ejs/mxs/u-boot-imx28.bd
index c60615a..a5fa648 100644
--- a/arch/arm/cpu/arm926ejs/mxs/u-boot-imx28.bd
+++ b/arch/arm/cpu/arm926ejs/mxs/u-boot-imx28.bd
@@ -1,6 +1,6 @@
 sources {
-	u_boot_spl="spl/u-boot-spl.bin";
-	u_boot="u-boot.bin";
+	u_boot_spl="OBJTREE/spl/u-boot-spl.bin";
+	u_boot="OBJTREE/u-boot.bin";
 }
 
 section (0) {
diff --git a/arch/arm/cpu/armv7/mx5/Makefile b/arch/arm/cpu/armv7/mx5/Makefile
index ecd1184..e05fae9 100644
--- a/arch/arm/cpu/armv7/mx5/Makefile
+++ b/arch/arm/cpu/armv7/mx5/Makefile
@@ -27,7 +27,7 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(SOC).o
 
-COBJS	= soc.o clock.o iomux.o
+COBJS	= soc.o clock.o
 SOBJS = lowlevel_init.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
diff --git a/arch/arm/cpu/armv7/mx5/clock.c b/arch/arm/cpu/armv7/mx5/clock.c
index 76c2c52..431756e 100644
--- a/arch/arm/cpu/armv7/mx5/clock.c
+++ b/arch/arm/cpu/armv7/mx5/clock.c
@@ -739,10 +739,11 @@ static int config_core_clk(u32 ref, u32 freq)
 static int config_nfc_clk(u32 nfc_clk)
 {
 	u32 parent_rate = get_emi_slow_clk();
-	u32 div = parent_rate / nfc_clk;
+	u32 div;
 
-	if (nfc_clk <= 0)
+	if (nfc_clk == 0)
 		return -EINVAL;
+	div = parent_rate / nfc_clk;
 	if (div == 0)
 		div++;
 	if (parent_rate / div > NFC_CLK_MAX)
@@ -755,6 +756,15 @@ static int config_nfc_clk(u32 nfc_clk)
 	return 0;
 }
 
+void enable_nfc_clk(unsigned char enable)
+{
+	unsigned int cg = enable ? MXC_CCM_CCGR_CG_ON : MXC_CCM_CCGR_CG_OFF;
+
+	clrsetbits_le32(&mxc_ccm->CCGR5,
+		MXC_CCM_CCGR5_EMI_ENFC(MXC_CCM_CCGR_CG_MASK),
+		MXC_CCM_CCGR5_EMI_ENFC(cg));
+}
+
 /* Config main_bus_clock for periphs */
 static int config_periph_clk(u32 ref, u32 freq)
 {
diff --git a/arch/arm/cpu/armv7/mx5/iomux.c b/arch/arm/cpu/armv7/mx5/iomux.c
deleted file mode 100644
index d4e3bbb..0000000
--- a/arch/arm/cpu/armv7/mx5/iomux.c
+++ /dev/null
@@ -1,186 +0,0 @@
-/*
- * (C) Copyright 2009 Freescale Semiconductor, Inc.
- *
- * 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/io.h>
-#include <asm/arch/imx-regs.h>
-#include <asm/arch/mx5x_pins.h>
-#include <asm/arch/iomux.h>
-#include <asm/arch/sys_proto.h>
-
-/* IOMUX register (base) addresses */
-enum iomux_reg_addr {
-	IOMUXGPR0 = IOMUXC_BASE_ADDR,
-	IOMUXGPR1 = IOMUXC_BASE_ADDR + 0x004,
-	IOMUXSW_MUX_CTL = IOMUXC_BASE_ADDR,
-	IOMUXSW_MUX_END = IOMUXC_BASE_ADDR + MUX_I_END,
-	IOMUXSW_PAD_CTL = IOMUXC_BASE_ADDR + PAD_I_START,
-	IOMUXSW_INPUT_CTL = IOMUXC_BASE_ADDR + INPUT_CTL_START,
-};
-
-#define MUX_PIN_NUM_MAX (((MUX_I_END - MUX_I_START) >> 2) + 1)
-
-/* Get the iomux register address of this pin */
-static inline u32 get_mux_reg(iomux_pin_name_t pin)
-{
-	u32 mux_reg = PIN_TO_IOMUX_MUX(pin);
-
-#if defined(CONFIG_MX51)
-	if (is_soc_rev(CHIP_REV_2_0) < 0) {
-		/*
-		 * Fixup register address:
-		 * i.MX51 TO1 has offset with the register
-		 * which is define as TO2.
-		 */
-		if ((pin == MX51_PIN_NANDF_RB5) ||
-			(pin == MX51_PIN_NANDF_RB6) ||
-			(pin == MX51_PIN_NANDF_RB7))
-			; /* Do nothing */
-		else if (mux_reg >= 0x2FC)
-			mux_reg += 8;
-		else if (mux_reg >= 0x130)
-			mux_reg += 0xC;
-	}
-#endif
-	mux_reg += IOMUXSW_MUX_CTL;
-	return mux_reg;
-}
-
-/* Get the pad register address of this pin */
-static inline u32 get_pad_reg(iomux_pin_name_t pin)
-{
-	u32 pad_reg = PIN_TO_IOMUX_PAD(pin);
-
-#if defined(CONFIG_MX51)
-	if (is_soc_rev(CHIP_REV_2_0) < 0) {
-		/*
-		 * Fixup register address:
-		 * i.MX51 TO1 has offset with the register
-		 * which is define as TO2.
-		 */
-		if ((pin == MX51_PIN_NANDF_RB5) ||
-			(pin == MX51_PIN_NANDF_RB6) ||
-			(pin == MX51_PIN_NANDF_RB7))
-			; /* Do nothing */
-		else if (pad_reg == 0x4D0 - PAD_I_START)
-			pad_reg += 0x4C;
-		else if (pad_reg == 0x860 - PAD_I_START)
-			pad_reg += 0x9C;
-		else if (pad_reg >= 0x804 - PAD_I_START)
-			pad_reg += 0xB0;
-		else if (pad_reg >= 0x7FC - PAD_I_START)
-			pad_reg += 0xB4;
-		else if (pad_reg >= 0x4E4 - PAD_I_START)
-			pad_reg += 0xCC;
-		else
-			pad_reg += 8;
-	}
-#endif
-	pad_reg += IOMUXSW_PAD_CTL;
-	return pad_reg;
-}
-
-/* Get the last iomux register address */
-static inline u32 get_mux_end(void)
-{
-#if defined(CONFIG_MX51)
-	if (is_soc_rev(CHIP_REV_2_0) < 0)
-		return IOMUXC_BASE_ADDR + (0x3F8 - 4);
-	else
-		return IOMUXC_BASE_ADDR + (0x3F0 - 4);
-#endif
-	return IOMUXSW_MUX_END;
-}
-
-/*
- * This function is used to configure a pin through the IOMUX module.
- * @param  pin		a pin number as defined in iomux_pin_name_t
- * @param  cfg		an output function as defined in iomux_pin_cfg_t
- *
- * @return 		0 if successful; Non-zero otherwise
- */
-static void iomux_config_mux(iomux_pin_name_t pin, iomux_pin_cfg_t cfg)
-{
-	u32 mux_reg = get_mux_reg(pin);
-
-	if ((mux_reg > get_mux_end()) || (mux_reg < IOMUXSW_MUX_CTL))
-		return ;
-	if (cfg == IOMUX_CONFIG_GPIO)
-		writel(PIN_TO_ALT_GPIO(pin), mux_reg);
-	else
-		writel(cfg, mux_reg);
-}
-
-/*
- * Request ownership for an IO pin. This function has to be the first one
- * being called before that pin is used. The caller has to check the
- * return value to make sure it returns 0.
- *
- * @param  pin		a name defined by iomux_pin_name_t
- * @param  cfg		an input function as defined in iomux_pin_cfg_t
- *
- */
-void mxc_request_iomux(iomux_pin_name_t pin, iomux_pin_cfg_t cfg)
-{
-	iomux_config_mux(pin, cfg);
-}
-
-/*
- * Release ownership for an IO pin
- *
- * @param  pin		a name defined by iomux_pin_name_t
- * @param  cfg		an input function as defined in iomux_pin_cfg_t
- */
-void mxc_free_iomux(iomux_pin_name_t pin, iomux_pin_cfg_t cfg)
-{
-}
-
-/*
- * This function configures the pad value for a IOMUX pin.
- *
- * @param  pin     a pin number as defined in iomux_pin_name_t
- * @param  config  the ORed value of elements defined in iomux_pad_config_t
- */
-void mxc_iomux_set_pad(iomux_pin_name_t pin, u32 config)
-{
-	u32 pad_reg = get_pad_reg(pin);
-	writel(config, pad_reg);
-}
-
-unsigned int mxc_iomux_get_pad(iomux_pin_name_t pin)
-{
-	u32 pad_reg = get_pad_reg(pin);
-	return readl(pad_reg);
-}
-
-/*
- * This function configures daisy-chain
- *
- * @param input    index of input select register
- * @param config   the binary value of elements
- */
-void mxc_iomux_set_input(iomux_input_select_t input, u32 config)
-{
-	u32 reg = IOMUXSW_INPUT_CTL + (input << 2);
-
-	writel(config, reg);
-}
diff --git a/arch/arm/cpu/armv7/mx5/soc.c b/arch/arm/cpu/armv7/mx5/soc.c
index 263658a..3d50a5d 100644
--- a/arch/arm/cpu/armv7/mx5/soc.c
+++ b/arch/arm/cpu/armv7/mx5/soc.c
@@ -72,6 +72,13 @@ u32 get_cpu_rev(void)
 	return system_rev;
 }
 
+#ifdef CONFIG_REVISION_TAG
+u32 __weak get_board_rev(void)
+{
+	return get_cpu_rev();
+}
+#endif
+
 #ifndef CONFIG_SYS_DCACHE_OFF
 void enable_caches(void)
 {
diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c
index a50db70..3c0d908 100644
--- a/arch/arm/cpu/armv7/mx6/clock.c
+++ b/arch/arm/cpu/armv7/mx6/clock.c
@@ -37,6 +37,20 @@ enum pll_clocks {
 
 struct mxc_ccm_reg *imx_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 
+#ifdef CONFIG_MXC_OCOTP
+void enable_ocotp_clk(unsigned char enable)
+{
+	u32 reg;
+
+	reg = __raw_readl(&imx_ccm->CCGR2);
+	if (enable)
+		reg |= MXC_CCM_CCGR2_OCOTP_CTRL_MASK;
+	else
+		reg &= ~MXC_CCM_CCGR2_OCOTP_CTRL_MASK;
+	__raw_writel(reg, &imx_ccm->CCGR2);
+}
+#endif
+
 void enable_usboh3_clk(unsigned char enable)
 {
 	u32 reg;
@@ -186,12 +200,16 @@ static u32 get_ipg_per_clk(void)
 static u32 get_uart_clk(void)
 {
 	u32 reg, uart_podf;
-
+	u32 freq = PLL3_80M;
 	reg = __raw_readl(&imx_ccm->cscdr1);
+#ifdef CONFIG_MX6SL
+	if (reg & MXC_CCM_CSCDR1_UART_CLK_SEL)
+		freq = MXC_HCLK;
+#endif
 	reg &= MXC_CCM_CSCDR1_UART_CLK_PODF_MASK;
 	uart_podf = reg >> MXC_CCM_CSCDR1_UART_CLK_PODF_OFFSET;
 
-	return PLL3_80M / (uart_podf + 1);
+	return freq / (uart_podf + 1);
 }
 
 static u32 get_cspi_clk(void)
@@ -252,6 +270,35 @@ static u32 get_emi_slow_clk(void)
 	return root_freq / (emi_slow_pof + 1);
 }
 
+#ifdef CONFIG_MX6SL
+static u32 get_mmdc_ch0_clk(void)
+{
+	u32 cbcmr = __raw_readl(&imx_ccm->cbcmr);
+	u32 cbcdr = __raw_readl(&imx_ccm->cbcdr);
+	u32 freq, podf;
+
+	podf = (cbcdr & MXC_CCM_CBCDR_MMDC_CH1_PODF_MASK) \
+			>> MXC_CCM_CBCDR_MMDC_CH1_PODF_OFFSET;
+
+	switch ((cbcmr & MXC_CCM_CBCMR_PRE_PERIPH2_CLK_SEL_MASK) >>
+		MXC_CCM_CBCMR_PRE_PERIPH2_CLK_SEL_OFFSET) {
+	case 0:
+		freq = decode_pll(PLL_BUS, MXC_HCLK);
+		break;
+	case 1:
+		freq = PLL2_PFD2_FREQ;
+		break;
+	case 2:
+		freq = PLL2_PFD0_FREQ;
+		break;
+	case 3:
+		freq = PLL2_PFD2_DIV_FREQ;
+	}
+
+	return freq / (podf + 1);
+
+}
+#else
 static u32 get_mmdc_ch0_clk(void)
 {
 	u32 cbcdr = __raw_readl(&imx_ccm->cbcdr);
@@ -260,6 +307,7 @@ static u32 get_mmdc_ch0_clk(void)
 
 	return get_periph_clk() / (mmdc_ch0_podf + 1);
 }
+#endif
 
 static u32 get_usdhc_clk(u32 port)
 {
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c
index 2ea8ca3..fc436fb 100644
--- a/arch/arm/cpu/armv7/mx6/soc.c
+++ b/arch/arm/cpu/armv7/mx6/soc.c
@@ -30,6 +30,7 @@
 #include <asm/arch/clock.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/imx-common/boot_mode.h>
+#include <asm/imx-common/dma.h>
 #include <stdbool.h>
 
 struct scu_regs {
@@ -151,6 +152,12 @@ int arch_cpu_init(void)
 	set_vddsoc(1200);	/* Set VDDSOC to 1.2V */
 
 	imx_set_wdog_powerdown(false); /* Disable PDE bit of WMCR register */
+
+#ifdef CONFIG_APBH_DMA
+	/* Start APBH DMA */
+	mxs_dma_init();
+#endif
+
 	return 0;
 }
 
@@ -165,8 +172,8 @@ void enable_caches(void)
 #if defined(CONFIG_FEC_MXC)
 void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
 {
-	struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
-	struct fuse_bank *bank = &iim->bank[4];
+	struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
+	struct fuse_bank *bank = &ocotp->bank[4];
 	struct fuse_bank4_regs *fuse =
 			(struct fuse_bank4_regs *)bank->fuse_regs;