Add i.MX25 support

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

7 files changed, 726 insertions, 0 deletions

diff --git a/arch/arm/mach-mx25/Kconfig b/arch/arm/mach-mx25/Kconfig
new file mode 100644
index 00000000000..14c918bad52
--- /dev/null
+++ b/arch/arm/mach-mx25/Kconfig
@@ -0,0 +1,5 @@
+if ARCH_MX25
+
+comment "MX25 platforms:"
+
+endif
diff --git a/arch/arm/mach-mx25/Makefile b/arch/arm/mach-mx25/Makefile
new file mode 100644
index 00000000000..5471086d5e1
--- /dev/null
+++ b/arch/arm/mach-mx25/Makefile
@@ -0,0 +1,2 @@
+obj-y                           := mm.o devices.o
+obj-$(CONFIG_ARCH_MX25)         += clock.o
diff --git a/arch/arm/mach-mx25/Makefile.boot b/arch/arm/mach-mx25/Makefile.boot
new file mode 100644
index 00000000000..e1dd366f836
--- /dev/null
+++ b/arch/arm/mach-mx25/Makefile.boot
@@ -0,0 +1,3 @@
+   zreladdr-y   := 0x80008000
+params_phys-y   := 0x80000100
+initrd_phys-y   := 0x80800000
diff --git a/arch/arm/mach-mx25/clock.c b/arch/arm/mach-mx25/clock.c
new file mode 100644
index 00000000000..ef26951a527
--- /dev/null
+++ b/arch/arm/mach-mx25/clock.c
@@ -0,0 +1,219 @@
+/*
+ * Copyright (C) 2009 by Sascha Hauer, Pengutronix
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+
+#include <asm/clkdev.h>
+
+#include <mach/clock.h>
+#include <mach/hardware.h>
+#include <mach/common.h>
+#include <mach/mx25.h>
+
+#define CRM_BASE        MX25_IO_ADDRESS(MX25_CRM_BASE_ADDR)
+
+#define CCM_MPCTL       0x00
+#define CCM_UPCTL       0x04
+#define CCM_CCTL        0x08
+#define CCM_CGCR0       0x0C
+#define CCM_CGCR1       0x10
+#define CCM_CGCR2       0x14
+#define CCM_PCDR0       0x18
+#define CCM_PCDR1       0x1C
+#define CCM_PCDR2       0x20
+#define CCM_PCDR3       0x24
+#define CCM_RCSR        0x28
+#define CCM_CRDR        0x2C
+#define CCM_DCVR0       0x30
+#define CCM_DCVR1       0x34
+#define CCM_DCVR2       0x38
+#define CCM_DCVR3       0x3c
+#define CCM_LTR0        0x40
+#define CCM_LTR1        0x44
+#define CCM_LTR2        0x48
+#define CCM_LTR3        0x4c
+
+static unsigned long get_rate_mpll(void)
+{
+        ulong mpctl = __raw_readl(CRM_BASE + CCM_MPCTL);
+
+        return mxc_decode_pll(mpctl, 24000000);
+}
+
+static unsigned long get_rate_upll(void)
+{
+        ulong mpctl = __raw_readl(CRM_BASE + CCM_UPCTL);
+
+        return mxc_decode_pll(mpctl, 24000000);
+}
+
+unsigned long get_rate_arm(struct clk *clk)
+{
+        unsigned long cctl = readl(CRM_BASE + CCM_CCTL);
+        unsigned long rate = get_rate_mpll();
+
+        if (cctl & (1 << 14))
+                rate = (rate * 3) >> 1;
+
+        return rate / ((cctl >> 30) + 1);
+}
+
+static unsigned long get_rate_ahb(struct clk *clk)
+{
+        unsigned long cctl = readl(CRM_BASE + CCM_CCTL);
+
+        return get_rate_arm(NULL) / (((cctl >> 28) & 0x3) + 1);
+}
+
+static unsigned long get_rate_ipg(struct clk *clk)
+{
+        return get_rate_ahb(NULL) >> 1;
+}
+
+static unsigned long get_rate_per(int per)
+{
+        unsigned long ofs = (per & 0x3) * 8;
+        unsigned long reg = per & ~0x3;
+        unsigned long val = (readl(CRM_BASE + CCM_PCDR0 + reg) >> ofs) & 0x3f;
+        unsigned long fref;
+
+        if (readl(CRM_BASE + 0x64) & (1 << per))
+                fref = get_rate_upll();
+        else
+                fref = get_rate_ipg(NULL);
+
+        return fref / (val + 1);
+}
+
+static unsigned long get_rate_uart(struct clk *clk)
+{
+        return get_rate_per(15);
+}
+
+static unsigned long get_rate_i2c(struct clk *clk)
+{
+        return get_rate_per(6);
+}
+
+static unsigned long get_rate_nfc(struct clk *clk)
+{
+        return get_rate_per(8);
+}
+
+static unsigned long get_rate_otg(struct clk *clk)
+{
+        return 48000000; /* FIXME */
+}
+
+static int clk_cgcr_enable(struct clk *clk)
+{
+        u32 reg;
+
+        reg = __raw_readl(clk->enable_reg);
+        reg |= 1 << clk->enable_shift;
+        __raw_writel(reg, clk->enable_reg);
+
+        return 0;
+}
+
+static void clk_cgcr_disable(struct clk *clk)
+{
+        u32 reg;
+
+        reg = __raw_readl(clk->enable_reg);
+        reg &= ~(1 << clk->enable_shift);
+        __raw_writel(reg, clk->enable_reg);
+}
+
+#define DEFINE_CLOCK(name, i, er, es, gr, sr)           \
+        static struct clk name = {                      \
+                .id             = i,                    \
+                .enable_reg     = CRM_BASE + er,        \
+                .enable_shift   = es,                   \
+                .get_rate       = gr,                   \
+                .set_rate       = sr,                   \
+                .enable         = clk_cgcr_enable,      \
+                .disable        = clk_cgcr_disable,     \
+        }
+
+DEFINE_CLOCK(gpt_clk,    0, CCM_CGCR0,  5, get_rate_ipg, NULL);
+DEFINE_CLOCK(cspi1_clk,  0, CCM_CGCR1,  5, get_rate_ipg, NULL);
+DEFINE_CLOCK(cspi2_clk,  0, CCM_CGCR1,  6, get_rate_ipg, NULL);
+DEFINE_CLOCK(cspi3_clk,  0, CCM_CGCR1,  7, get_rate_ipg, NULL);
+DEFINE_CLOCK(uart1_clk,  0, CCM_CGCR2, 14, get_rate_uart, NULL);
+DEFINE_CLOCK(uart2_clk,  0, CCM_CGCR2, 15, get_rate_uart, NULL);
+DEFINE_CLOCK(uart3_clk,  0, CCM_CGCR2, 16, get_rate_uart, NULL);
+DEFINE_CLOCK(uart4_clk,  0, CCM_CGCR2, 17, get_rate_uart, NULL);
+DEFINE_CLOCK(uart5_clk,  0, CCM_CGCR2, 18, get_rate_uart, NULL);
+DEFINE_CLOCK(nfc_clk,    0, CCM_CGCR0,  8, get_rate_nfc, NULL);
+DEFINE_CLOCK(usbotg_clk, 0, CCM_CGCR0, 28, get_rate_otg, NULL);
+DEFINE_CLOCK(pwm1_clk,   0, CCM_CGCR1, 31, get_rate_ipg, NULL);
+DEFINE_CLOCK(pwm2_clk,   0, CCM_CGCR2,  0, get_rate_ipg, NULL);
+DEFINE_CLOCK(pwm3_clk,   0, CCM_CGCR2,  1, get_rate_ipg, NULL);
+DEFINE_CLOCK(pwm4_clk,   0, CCM_CGCR2,  2, get_rate_ipg, NULL);
+DEFINE_CLOCK(kpp_clk,    0, CCM_CGCR1, 28, get_rate_ipg, NULL);
+DEFINE_CLOCK(tsc_clk,    0, CCM_CGCR2, 13, get_rate_ipg, NULL);
+DEFINE_CLOCK(i2c_clk,    0, CCM_CGCR0,  6, get_rate_i2c, NULL);
+
+#define _REGISTER_CLOCK(d, n, c)        \
+        {                               \
+                .dev_id = d,            \
+                .con_id = n,            \
+                .clk = &c,              \
+        },
+
+static struct clk_lookup lookups[] = {
+        _REGISTER_CLOCK("imx-uart.0", NULL, uart1_clk)
+        _REGISTER_CLOCK("imx-uart.1", NULL, uart2_clk)
+        _REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk)
+        _REGISTER_CLOCK("imx-uart.3", NULL, uart4_clk)
+        _REGISTER_CLOCK("imx-uart.4", NULL, uart5_clk)
+        _REGISTER_CLOCK("mxc-ehci.0", "usb", usbotg_clk)
+        _REGISTER_CLOCK("mxc-ehci.1", "usb", usbotg_clk)
+        _REGISTER_CLOCK("mxc-ehci.2", "usb", usbotg_clk)
+        _REGISTER_CLOCK("fsl-usb2-udc", "usb", usbotg_clk)
+        _REGISTER_CLOCK("mxc_nand.0", NULL, nfc_clk)
+        _REGISTER_CLOCK("spi_imx.0", NULL, cspi1_clk)
+        _REGISTER_CLOCK("spi_imx.1", NULL, cspi2_clk)
+        _REGISTER_CLOCK("spi_imx.2", NULL, cspi3_clk)
+        _REGISTER_CLOCK("mxc_pwm.0", NULL, pwm1_clk)
+        _REGISTER_CLOCK("mxc_pwm.1", NULL, pwm2_clk)
+        _REGISTER_CLOCK("mxc_pwm.2", NULL, pwm3_clk)
+        _REGISTER_CLOCK("mxc_pwm.3", NULL, pwm4_clk)
+        _REGISTER_CLOCK("mxc-keypad", NULL, kpp_clk)
+        _REGISTER_CLOCK("mx25-adc", NULL, tsc_clk)
+        _REGISTER_CLOCK("imx-i2c.0", NULL, i2c_clk)
+        _REGISTER_CLOCK("imx-i2c.1", NULL, i2c_clk)
+        _REGISTER_CLOCK("imx-i2c.2", NULL, i2c_clk)
+};
+
+int __init mx25_clocks_init(unsigned long fref)
+{
+        int i;
+
+        for (i = 0; i < ARRAY_SIZE(lookups); i++)
+                clkdev_add(&lookups[i]);
+
+        mxc_timer_init(&gpt_clk, MX25_IO_ADDRESS(MX25_GPT1_BASE_ADDR), 54);
+
+        return 0;
+}
diff --git a/arch/arm/mach-mx25/devices.c b/arch/arm/mach-mx25/devices.c
new file mode 100644
index 00000000000..eb12de1da42
--- /dev/null
+++ b/arch/arm/mach-mx25/devices.c
@@ -0,0 +1,402 @@
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+#include <mach/mx25.h>
+#include <mach/irqs.h>
+
+static struct resource uart0[] = {
+        {
+                .start = 0x43f90000,
+                .end = 0x43f93fff,
+                .flags = IORESOURCE_MEM,
+        }, {
+                .start = 45,
+                .end = 45,
+                .flags = IORESOURCE_IRQ,
+        },
+};
+
+struct platform_device mxc_uart_device0 = {
+        .name = "imx-uart",
+        .id = 0,
+        .resource = uart0,
+        .num_resources = ARRAY_SIZE(uart0),
+};
+
+static struct resource uart1[] = {
+        {
+                .start = 0x43f94000,
+                .end = 0x43f97fff,
+                .flags = IORESOURCE_MEM,
+        }, {
+                .start = 32,
+                .end = 32,
+                .flags = IORESOURCE_IRQ,
+        },
+};
+
+struct platform_device mxc_uart_device1 = {
+        .name = "imx-uart",
+        .id = 1,
+        .resource = uart1,
+        .num_resources = ARRAY_SIZE(uart1),
+};
+
+static struct resource uart2[] = {
+        {
+                .start = 0x5000c000,
+                .end = 0x5000ffff,
+                .flags = IORESOURCE_MEM,
+        }, {
+                .start = 18,
+                .end = 18,
+                .flags = IORESOURCE_IRQ,
+        },
+};
+
+struct platform_device mxc_uart_device2 = {
+        .name = "imx-uart",
+        .id = 2,
+        .resource = uart2,
+        .num_resources = ARRAY_SIZE(uart2),
+};
+
+static struct resource uart3[] = {
+        {
+                .start = 0x50008000,
+                .end = 0x5000bfff,
+                .flags = IORESOURCE_MEM,
+        }, {
+                .start = 5,
+                .end = 5,
+                .flags = IORESOURCE_IRQ,
+        },
+};
+
+struct platform_device mxc_uart_device3 = {
+        .name = "imx-uart",
+        .id = 3,
+        .resource = uart3,
+        .num_resources = ARRAY_SIZE(uart3),
+};
+
+static struct resource uart4[] = {
+        {
+                .start = 0x5002c000,
+                .end = 0x5002ffff,
+                .flags = IORESOURCE_MEM,
+        }, {
+                .start = 40,
+                .end = 40,
+                .flags = IORESOURCE_IRQ,
+        },
+};
+
+struct platform_device mxc_uart_device4 = {
+        .name = "imx-uart",
+        .id = 4,
+        .resource = uart4,
+        .num_resources = ARRAY_SIZE(uart4),
+};
+
+#define MX25_OTG_BASE_ADDR 0x53FF4000
+
+static u64 otg_dmamask = DMA_BIT_MASK(32);
+
+static struct resource mxc_otg_resources[] = {
+        {
+                .start = MX25_OTG_BASE_ADDR,
+                .end = MX25_OTG_BASE_ADDR + 0x1ff,
+                .flags = IORESOURCE_MEM,
+        }, {
+                .start = 37,
+                .end = 37,
+                .flags = IORESOURCE_IRQ,
+        },
+};
+
+struct platform_device mxc_otg = {
+        .name = "mxc-ehci",
+        .id = 0,
+        .dev = {
+                .coherent_dma_mask = 0xffffffff,
+                .dma_mask = &otg_dmamask,
+        },
+        .resource = mxc_otg_resources,
+        .num_resources = ARRAY_SIZE(mxc_otg_resources),
+};
+
+/* OTG gadget device */
+struct platform_device otg_udc_device = {
+        .name = "fsl-usb2-udc",
+        .id   = -1,
+        .dev  = {
+                .dma_mask          = &otg_dmamask,
+                .coherent_dma_mask = 0xffffffff,
+        },
+        .resource = mxc_otg_resources,
+        .num_resources = ARRAY_SIZE(mxc_otg_resources),
+};
+
+static u64 usbh2_dmamask = DMA_BIT_MASK(32);
+
+static struct resource mxc_usbh2_resources[] = {
+        {
+                .start = MX25_OTG_BASE_ADDR + 0x400,
+                .end = MX25_OTG_BASE_ADDR + 0x5ff,
+                .flags = IORESOURCE_MEM,
+        }, {
+                .start = 35,
+                .end = 35,
+                .flags = IORESOURCE_IRQ,
+        },
+};
+
+struct platform_device mxc_usbh2 = {
+        .name = "mxc-ehci",
+        .id = 1,
+        .dev = {
+                .coherent_dma_mask = 0xffffffff,
+                .dma_mask = &usbh2_dmamask,
+        },
+        .resource = mxc_usbh2_resources,
+        .num_resources = ARRAY_SIZE(mxc_usbh2_resources),
+};
+
+static struct resource mxc_spi_resources0[] = {
+        {
+               .start = 0x43fa4000,
+               .end = 0x43fa7fff,
+               .flags = IORESOURCE_MEM,
+        }, {
+               .start = 14,
+               .end = 14,
+               .flags = IORESOURCE_IRQ,
+        },
+};
+
+struct platform_device mxc_spi_device0 = {
+        .name = "spi_imx",
+        .id = 0,
+        .num_resources = ARRAY_SIZE(mxc_spi_resources0),
+        .resource = mxc_spi_resources0,
+};
+
+static struct resource mxc_spi_resources1[] = {
+        {
+               .start = 0x50010000,
+               .end = 0x50013fff,
+               .flags = IORESOURCE_MEM,
+        }, {
+               .start = 13,
+               .end = 13,
+               .flags = IORESOURCE_IRQ,
+        },
+};
+
+struct platform_device mxc_spi_device1 = {
+        .name = "spi_imx",
+        .id = 1,
+        .num_resources = ARRAY_SIZE(mxc_spi_resources1),
+        .resource = mxc_spi_resources1,
+};
+
+static struct resource mxc_spi_resources2[] = {
+        {
+               .start = 0x50004000,
+               .end = 0x50007fff,
+               .flags = IORESOURCE_MEM,
+        }, {
+               .start = 0,
+               .end = 0,
+               .flags = IORESOURCE_IRQ,
+        },
+};
+
+struct platform_device mxc_spi_device2 = {
+        .name = "spi_imx",
+        .id = 2,
+        .num_resources = ARRAY_SIZE(mxc_spi_resources2),
+        .resource = mxc_spi_resources2,
+};
+
+static struct resource mxc_pwm_resources0[] = {
+        {
+                .start  = 0x53fe0000,
+                .end    = 0x53fe3fff,
+                .flags  = IORESOURCE_MEM,
+        }, {
+                .start   = 26,
+                .end     = 26,
+                .flags   = IORESOURCE_IRQ,
+        }
+};
+
+struct platform_device mxc_pwm_device0 = {
+        .name = "mxc_pwm",
+        .id = 0,
+        .num_resources = ARRAY_SIZE(mxc_pwm_resources0),
+        .resource = mxc_pwm_resources0,
+};
+
+static struct resource mxc_pwm_resources1[] = {
+        {
+                .start  = 0x53fa0000,
+                .end    = 0x53fa3fff,
+                .flags  = IORESOURCE_MEM,
+        }, {
+                .start   = 36,
+                .end     = 36,
+                .flags   = IORESOURCE_IRQ,
+        }
+};
+
+struct platform_device mxc_pwm_device1 = {
+        .name = "mxc_pwm",
+        .id = 1,
+        .num_resources = ARRAY_SIZE(mxc_pwm_resources1),
+        .resource = mxc_pwm_resources1,
+};
+
+static struct resource mxc_pwm_resources2[] = {
+        {
+                .start  = 0x53fa8000,
+                .end    = 0x53fabfff,
+                .flags  = IORESOURCE_MEM,
+        }, {
+                .start   = 41,
+                .end     = 41,
+                .flags   = IORESOURCE_IRQ,
+        }
+};
+
+struct platform_device mxc_pwm_device2 = {
+        .name = "mxc_pwm",
+        .id = 2,
+        .num_resources = ARRAY_SIZE(mxc_pwm_resources2),
+        .resource = mxc_pwm_resources2,
+};
+
+static struct resource mxc_keypad_resources[] = {
+        {
+                .start  = 0x43fa8000,
+                .end    = 0x43fabfff,
+                .flags  = IORESOURCE_MEM,
+        }, {
+                .start   = 24,
+                .end     = 24,
+                .flags   = IORESOURCE_IRQ,
+        }
+};
+
+struct platform_device mxc_keypad_device = {
+        .name = "mxc-keypad",
+        .id = -1,
+        .num_resources = ARRAY_SIZE(mxc_keypad_resources),
+        .resource = mxc_keypad_resources,
+};
+
+static struct resource mxc_pwm_resources3[] = {
+        {
+                .start  = 0x53fc8000,
+                .end    = 0x53fcbfff,
+                .flags  = IORESOURCE_MEM,
+        }, {
+                .start   = 42,
+                .end     = 42,
+                .flags   = IORESOURCE_IRQ,
+        }
+};
+
+struct platform_device mxc_pwm_device3 = {
+        .name = "mxc_pwm",
+        .id = 3,
+        .num_resources = ARRAY_SIZE(mxc_pwm_resources3),
+        .resource = mxc_pwm_resources3,
+};
+
+static struct resource mxc_i2c_1_resources[] = {
+        {
+                .start  = 0x43f80000,
+                .end    = 0x43f83fff,
+                .flags  = IORESOURCE_MEM,
+        }, {
+                .start  = 3,
+                .end    = 3,
+                .flags  = IORESOURCE_IRQ,
+        }
+};
+
+struct platform_device mxc_i2c_device0 = {
+        .name = "imx-i2c",
+        .id = 0,
+        .num_resources = ARRAY_SIZE(mxc_i2c_1_resources),
+        .resource = mxc_i2c_1_resources,
+};
+
+static struct resource mxc_i2c_2_resources[] = {
+        {
+                .start  = 0x43f98000,
+                .end    = 0x43f9bfff,
+                .flags  = IORESOURCE_MEM,
+        }, {
+                .start  = 4,
+                .end    = 4,
+                .flags  = IORESOURCE_IRQ,
+        }
+};
+
+struct platform_device mxc_i2c_device1 = {
+        .name = "imx-i2c",
+        .id = 1,
+        .num_resources = ARRAY_SIZE(mxc_i2c_2_resources),
+        .resource = mxc_i2c_2_resources,
+};
+
+static struct resource mxc_i2c_3_resources[] = {
+        {
+                .start  = 0x43f84000,
+                .end    = 0x43f87fff,
+                .flags  = IORESOURCE_MEM,
+        }, {
+                .start  = 10,
+                .end    = 10,
+                .flags  = IORESOURCE_IRQ,
+        }
+};
+
+struct platform_device mxc_i2c_device2 = {
+        .name = "imx-i2c",
+        .id = 2,
+        .num_resources = ARRAY_SIZE(mxc_i2c_3_resources),
+        .resource = mxc_i2c_3_resources,
+};
+
+static struct mxc_gpio_port imx_gpio_ports[] = {
+        {
+                .chip.label = "gpio-0",
+                .base = (void __iomem *)MX25_GPIO1_BASE_ADDR_VIRT,
+                .irq = 52,
+                .virtual_irq_start = MXC_GPIO_IRQ_START,
+        }, {
+                .chip.label = "gpio-1",
+                .base = (void __iomem *)MX25_GPIO2_BASE_ADDR_VIRT,
+                .irq = 51,
+                .virtual_irq_start = MXC_GPIO_IRQ_START + 32,
+        }, {
+                .chip.label = "gpio-2",
+                .base = (void __iomem *)MX25_GPIO3_BASE_ADDR_VIRT,
+                .irq = 16,
+                .virtual_irq_start = MXC_GPIO_IRQ_START + 64,
+        }, {
+                .chip.label = "gpio-3",
+                .base = (void __iomem *)MX25_GPIO4_BASE_ADDR_VIRT,
+                .irq = 23,
+                .virtual_irq_start = MXC_GPIO_IRQ_START + 96,
+        }
+};
+
+int __init mxc_register_gpios(void)
+{
+        return mxc_gpio_init(imx_gpio_ports, ARRAY_SIZE(imx_gpio_ports));
+}
+
diff --git a/arch/arm/mach-mx25/devices.h b/arch/arm/mach-mx25/devices.h
new file mode 100644
index 00000000000..fe6bf88ad1d
--- /dev/null
+++ b/arch/arm/mach-mx25/devices.h
@@ -0,0 +1,19 @@
+extern struct platform_device mxc_uart_device0;
+extern struct platform_device mxc_uart_device1;
+extern struct platform_device mxc_uart_device2;
+extern struct platform_device mxc_uart_device3;
+extern struct platform_device mxc_uart_device4;
+extern struct platform_device mxc_otg;
+extern struct platform_device otg_udc_device;
+extern struct platform_device mxc_usbh2;
+extern struct platform_device mxc_spi_device0;
+extern struct platform_device mxc_spi_device1;
+extern struct platform_device mxc_spi_device2;
+extern struct platform_device mxc_pwm_device0;
+extern struct platform_device mxc_pwm_device1;
+extern struct platform_device mxc_pwm_device2;
+extern struct platform_device mxc_pwm_device3;
+extern struct platform_device mxc_keypad_device;
+extern struct platform_device mxc_i2c_device0;
+extern struct platform_device mxc_i2c_device1;
+extern struct platform_device mxc_i2c_device2;
diff --git a/arch/arm/mach-mx25/mm.c b/arch/arm/mach-mx25/mm.c
new file mode 100644
index 00000000000..a7e587ff3e9
--- /dev/null
+++ b/arch/arm/mach-mx25/mm.c
@@ -0,0 +1,76 @@
+/*
+ *  Copyright (C) 1999,2000 Arm Limited
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd
+ *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
+ *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ *    - add MX31 specific definitions
+ *
+ * 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 <linux/mm.h>
+#include <linux/init.h>
+#include <linux/err.h>
+
+#include <asm/pgtable.h>
+#include <asm/mach/map.h>
+
+#include <mach/common.h>
+#include <mach/hardware.h>
+#include <mach/mx25.h>
+#include <mach/iomux-v3.h>
+
+/*
+ * This table defines static virtual address mappings for I/O regions.
+ * These are the mappings common across all MX3 boards.
+ */
+static struct map_desc mxc_io_desc[] __initdata = {
+        {
+                .virtual        = MX25_AVIC_BASE_ADDR_VIRT,
+                .pfn            = __phys_to_pfn(MX25_AVIC_BASE_ADDR),
+                .length         = MX25_AVIC_SIZE,
+                .type           = MT_DEVICE_NONSHARED
+        }, {
+                .virtual        = MX25_AIPS1_BASE_ADDR_VIRT,
+                .pfn            = __phys_to_pfn(MX25_AIPS1_BASE_ADDR),
+                .length         = MX25_AIPS1_SIZE,
+                .type           = MT_DEVICE_NONSHARED
+        }, {
+                .virtual        = MX25_AIPS2_BASE_ADDR_VIRT,
+                .pfn            = __phys_to_pfn(MX25_AIPS2_BASE_ADDR),
+                .length         = MX25_AIPS2_SIZE,
+                .type           = MT_DEVICE_NONSHARED
+        },
+};
+
+/*
+ * This function initializes the memory map. It is called during the
+ * system startup to create static physical to virtual memory mappings
+ * for the IO modules.
+ */
+void __init mx25_map_io(void)
+{
+        mxc_set_cpu_type(MXC_CPU_MX25);
+        mxc_iomux_v3_init(MX25_IO_ADDRESS(MX25_IOMUXC_BASE_ADDR));
+        mxc_arch_reset_init(MX25_IO_ADDRESS(MX25_WDOG_BASE_ADDR));
+
+        iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));
+}
+
+void __init mx25_init_irq(void)
+{
+        mxc_init_irq((void __iomem *)MX25_AVIC_BASE_ADDR_VIRT);
+}
+