davinci: DM646x: add base SoC and board support

Add support for DM646x SoC (a.k.a DaVinci HD) and its Evalution
Module (EVM.)

Original support done by Sudhakar Rajashekhara.

Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

5 files changed, 714 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/Kconfig b/arch/arm/mach-davinci/Kconfig
index 1c3ab40e2b6c..d7614a0ab2f4 100644
--- a/arch/arm/mach-davinci/Kconfig
+++ b/arch/arm/mach-davinci/Kconfig
@@ -13,6 +13,9 @@ config ARCH_DAVINCI_DM644x
 config ARCH_DAVINCI_DM355
         bool "DaVinci 355 based system"
 
+config ARCH_DAVINCI_DM646x
+        bool "DaVinci 646x based system"
+
 comment "DaVinci Board Type"
 
 config MACH_DAVINCI_EVM
@@ -47,6 +50,15 @@ config MACH_DM355_LEOPARD
           Configure this option to specify the whether the board used
           for development is a DM355 Leopard board.
 
+config MACH_DAVINCI_DM6467_EVM
+        bool "TI DM6467 EVM"
+        default n
+        depends on ARCH_DAVINCI_DM646x
+        help
+          Configure this option to specify the whether the board used
+          for development is a DM6467 EVM
+
+
 config DAVINCI_MUX
         bool "DAVINCI multiplexing support"
         depends on ARCH_DAVINCI
diff --git a/arch/arm/mach-davinci/Makefile b/arch/arm/mach-davinci/Makefile
index 381c363d98ac..2873149da7f0 100644
--- a/arch/arm/mach-davinci/Makefile
+++ b/arch/arm/mach-davinci/Makefile
@@ -13,9 +13,11 @@ obj-$(CONFIG_CP_INTC)			+= cp_intc.o
 # Chip specific
 obj-$(CONFIG_ARCH_DAVINCI_DM644x)       += dm644x.o
 obj-$(CONFIG_ARCH_DAVINCI_DM355)        += dm355.o
+obj-$(CONFIG_ARCH_DAVINCI_DM646x)       += dm646x.o
 
 # Board specific
 obj-$(CONFIG_MACH_DAVINCI_EVM)          += board-dm644x-evm.o
 obj-$(CONFIG_MACH_SFFSDR)               += board-sffsdr.o
 obj-$(CONFIG_MACH_DAVINCI_DM355_EVM)    += board-dm355-evm.o
 obj-$(CONFIG_MACH_DM355_LEOPARD)        += board-dm355-leopard.o
+obj-$(CONFIG_MACH_DAVINCI_DM6467_EVM)   += board-dm646x-evm.o
diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c b/arch/arm/mach-davinci/board-dm646x-evm.c
new file mode 100644
index 000000000000..94cb623b1ec9
--- /dev/null
+++ b/arch/arm/mach-davinci/board-dm646x-evm.c
@@ -0,0 +1,280 @@
+/*
+ * TI DaVinci DM646X EVM board
+ *
+ * Derived from: arch/arm/mach-davinci/board-evm.c
+ * Copyright (C) 2006 Texas Instruments.
+ *
+ * (C) 2007-2008, MontaVista Software, Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ *
+ */
+
+/**************************************************************************
+ * Included Files
+ **************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/major.h>
+#include <linux/root_dev.h>
+#include <linux/dma-mapping.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+#include <linux/leds.h>
+#include <linux/gpio.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/i2c/at24.h>
+#include <linux/i2c/pcf857x.h>
+#include <linux/etherdevice.h>
+
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/flash.h>
+
+#include <mach/dm646x.h>
+#include <mach/common.h>
+#include <mach/psc.h>
+#include <mach/serial.h>
+#include <mach/i2c.h>
+
+static struct davinci_uart_config uart_config __initdata = {
+        .enabled_uarts = (1 << 0),
+};
+
+/* LEDS */
+
+static struct gpio_led evm_leds[] = {
+        { .name = "DS1", .active_low = 1, },
+        { .name = "DS2", .active_low = 1, },
+        { .name = "DS3", .active_low = 1, },
+        { .name = "DS4", .active_low = 1, },
+};
+
+static __initconst struct gpio_led_platform_data evm_led_data = {
+        .num_leds = ARRAY_SIZE(evm_leds),
+        .leds     = evm_leds,
+};
+
+static struct platform_device *evm_led_dev;
+
+static int evm_led_setup(struct i2c_client *client, int gpio,
+                        unsigned int ngpio, void *c)
+{
+        struct gpio_led *leds = evm_leds;
+        int status;
+
+        while (ngpio--) {
+                leds->gpio = gpio++;
+                leds++;
+        };
+
+        evm_led_dev = platform_device_alloc("leds-gpio", 0);
+        platform_device_add_data(evm_led_dev, &evm_led_data,
+                                sizeof(evm_led_data));
+
+        evm_led_dev->dev.parent = &client->dev;
+        status = platform_device_add(evm_led_dev);
+        if (status < 0) {
+                platform_device_put(evm_led_dev);
+                evm_led_dev = NULL;
+        }
+        return status;
+}
+
+static int evm_led_teardown(struct i2c_client *client, int gpio,
+                                unsigned ngpio, void *c)
+{
+        if (evm_led_dev) {
+                platform_device_unregister(evm_led_dev);
+                evm_led_dev = NULL;
+        }
+        return 0;
+}
+
+static int evm_sw_gpio[4] = { -EINVAL, -EINVAL, -EINVAL, -EINVAL };
+
+static int evm_sw_setup(struct i2c_client *client, int gpio,
+                        unsigned ngpio, void *c)
+{
+        int status;
+        int i;
+        char label[10];
+
+        for (i = 0; i < 4; ++i) {
+                snprintf(label, 10, "user_sw%d", i);
+                status = gpio_request(gpio, label);
+                if (status)
+                        goto out_free;
+                evm_sw_gpio[i] = gpio++;
+
+                status = gpio_direction_input(evm_sw_gpio[i]);
+                if (status) {
+                        gpio_free(evm_sw_gpio[i]);
+                        evm_sw_gpio[i] = -EINVAL;
+                        goto out_free;
+                }
+
+                status = gpio_export(evm_sw_gpio[i], 0);
+                if (status) {
+                        gpio_free(evm_sw_gpio[i]);
+                        evm_sw_gpio[i] = -EINVAL;
+                        goto out_free;
+                }
+        }
+        return status;
+out_free:
+        for (i = 0; i < 4; ++i) {
+                if (evm_sw_gpio[i] != -EINVAL) {
+                        gpio_free(evm_sw_gpio[i]);
+                        evm_sw_gpio[i] = -EINVAL;
+                }
+        }
+        return status;
+}
+
+static int evm_sw_teardown(struct i2c_client *client, int gpio,
+                        unsigned ngpio, void *c)
+{
+        int i;
+
+        for (i = 0; i < 4; ++i) {
+                if (evm_sw_gpio[i] != -EINVAL) {
+                        gpio_unexport(evm_sw_gpio[i]);
+                        gpio_free(evm_sw_gpio[i]);
+                        evm_sw_gpio[i] = -EINVAL;
+                }
+        }
+        return 0;
+}
+
+static int evm_pcf_setup(struct i2c_client *client, int gpio,
+                        unsigned int ngpio, void *c)
+{
+        int status;
+
+        if (ngpio < 8)
+                return -EINVAL;
+
+        status = evm_sw_setup(client, gpio, 4, c);
+        if (status)
+                return status;
+
+        return evm_led_setup(client, gpio+4, 4, c);
+}
+
+static int evm_pcf_teardown(struct i2c_client *client, int gpio,
+                        unsigned int ngpio, void *c)
+{
+        BUG_ON(ngpio < 8);
+
+        evm_sw_teardown(client, gpio, 4, c);
+        evm_led_teardown(client, gpio+4, 4, c);
+
+        return 0;
+}
+
+static struct pcf857x_platform_data pcf_data = {
+        .gpio_base      = DAVINCI_N_GPIO+1,
+        .setup          = evm_pcf_setup,
+        .teardown       = evm_pcf_teardown,
+};
+
+/* Most of this EEPROM is unused, but U-Boot uses some data:
+ *  - 0x7f00, 6 bytes Ethernet Address
+ *  - ... newer boards may have more
+ */
+static struct memory_accessor *at24_mem_acc;
+
+static void at24_setup(struct memory_accessor *mem_acc, void *context)
+{
+        char mac_addr[6];
+
+        at24_mem_acc = mem_acc;
+
+        /* Read MAC addr from EEPROM */
+        if (at24_mem_acc->read(at24_mem_acc, mac_addr, 0x7f00, ETH_ALEN) ==
+            ETH_ALEN)
+                pr_info("Read MAC addr from EEPROM: %pM\n", mac_addr);
+}
+
+static struct at24_platform_data eeprom_info = {
+        .byte_len       = (256*1024) / 8,
+        .page_size      = 64,
+        .flags          = AT24_FLAG_ADDR16,
+        .setup          = at24_setup,
+};
+
+int dm646xevm_eeprom_read(void *buf, off_t off, size_t count)
+{
+        if (at24_mem_acc)
+                return at24_mem_acc->read(at24_mem_acc, buf, off, count);
+        return -ENODEV;
+}
+EXPORT_SYMBOL(dm646xevm_eeprom_read);
+
+int dm646xevm_eeprom_write(void *buf, off_t off, size_t count)
+{
+        if (at24_mem_acc)
+                return at24_mem_acc->write(at24_mem_acc, buf, off, count);
+        return -ENODEV;
+}
+EXPORT_SYMBOL(dm646xevm_eeprom_write);
+
+static struct i2c_board_info __initdata i2c_info[] =  {
+        {
+                I2C_BOARD_INFO("24c256", 0x50),
+                .platform_data  = &eeprom_info,
+        },
+        {
+                I2C_BOARD_INFO("pcf8574a", 0x38),
+                .platform_data  = &pcf_data,
+        },
+};
+
+static struct davinci_i2c_platform_data i2c_pdata = {
+        .bus_freq       = 100 /* kHz */,
+        .bus_delay      = 0 /* usec */,
+};
+
+static void __init evm_init_i2c(void)
+{
+        davinci_init_i2c(&i2c_pdata);
+        i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
+}
+
+static void __init davinci_map_io(void)
+{
+        davinci_map_common_io();
+        dm646x_init();
+}
+
+static __init void evm_init(void)
+{
+        evm_init_i2c();
+        davinci_serial_init(&uart_config);
+}
+
+static __init void davinci_dm646x_evm_irq_init(void)
+{
+        davinci_irq_init();
+}
+
+MACHINE_START(DAVINCI_DM6467_EVM, "DaVinci DM646x EVM")
+        .phys_io      = IO_PHYS,
+        .io_pg_offst  = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
+        .boot_params  = (0x80000100),
+        .map_io       = davinci_map_io,
+        .init_irq     = davinci_dm646x_evm_irq_init,
+        .timer        = &davinci_timer,
+        .init_machine = evm_init,
+MACHINE_END
+
diff --git a/arch/arm/mach-davinci/dm646x.c b/arch/arm/mach-davinci/dm646x.c
new file mode 100644
index 000000000000..93443a6637ea
--- /dev/null
+++ b/arch/arm/mach-davinci/dm646x.c
@@ -0,0 +1,402 @@
+/*
+ * TI DaVinci DM644x chip specific setup
+ *
+ * Author: Kevin Hilman, Deep Root Systems, LLC
+ *
+ * 2007 (c) Deep Root Systems, LLC. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+
+#include <mach/dm646x.h>
+#include <mach/clock.h>
+#include <mach/cputype.h>
+#include <mach/edma.h>
+#include <mach/irqs.h>
+#include <mach/psc.h>
+#include <mach/mux.h>
+
+#include "clock.h"
+#include "mux.h"
+
+/*
+ * Device specific clocks
+ */
+#define DM646X_REF_FREQ         27000000
+#define DM646X_AUX_FREQ         24000000
+
+static struct pll_data pll1_data = {
+        .num       = 1,
+        .phys_base = DAVINCI_PLL1_BASE,
+};
+
+static struct pll_data pll2_data = {
+        .num       = 2,
+        .phys_base = DAVINCI_PLL2_BASE,
+};
+
+static struct clk ref_clk = {
+        .name = "ref_clk",
+        .rate = DM646X_REF_FREQ,
+};
+
+static struct clk aux_clkin = {
+        .name = "aux_clkin",
+        .rate = DM646X_AUX_FREQ,
+};
+
+static struct clk pll1_clk = {
+        .name = "pll1",
+        .parent = &ref_clk,
+        .pll_data = &pll1_data,
+        .flags = CLK_PLL,
+};
+
+static struct clk pll1_sysclk1 = {
+        .name = "pll1_sysclk1",
+        .parent = &pll1_clk,
+        .flags = CLK_PLL,
+        .div_reg = PLLDIV1,
+};
+
+static struct clk pll1_sysclk2 = {
+        .name = "pll1_sysclk2",
+        .parent = &pll1_clk,
+        .flags = CLK_PLL,
+        .div_reg = PLLDIV2,
+};
+
+static struct clk pll1_sysclk3 = {
+        .name = "pll1_sysclk3",
+        .parent = &pll1_clk,
+        .flags = CLK_PLL,
+        .div_reg = PLLDIV3,
+};
+
+static struct clk pll1_sysclk4 = {
+        .name = "pll1_sysclk4",
+        .parent = &pll1_clk,
+        .flags = CLK_PLL,
+        .div_reg = PLLDIV4,
+};
+
+static struct clk pll1_sysclk5 = {
+        .name = "pll1_sysclk5",
+        .parent = &pll1_clk,
+        .flags = CLK_PLL,
+        .div_reg = PLLDIV5,
+};
+
+static struct clk pll1_sysclk6 = {
+        .name = "pll1_sysclk6",
+        .parent = &pll1_clk,
+        .flags = CLK_PLL,
+        .div_reg = PLLDIV6,
+};
+
+static struct clk pll1_sysclk8 = {
+        .name = "pll1_sysclk8",
+        .parent = &pll1_clk,
+        .flags = CLK_PLL,
+        .div_reg = PLLDIV8,
+};
+
+static struct clk pll1_sysclk9 = {
+        .name = "pll1_sysclk9",
+        .parent = &pll1_clk,
+        .flags = CLK_PLL,
+        .div_reg = PLLDIV9,
+};
+
+static struct clk pll1_sysclkbp = {
+        .name = "pll1_sysclkbp",
+        .parent = &pll1_clk,
+        .flags = CLK_PLL | PRE_PLL,
+        .div_reg = BPDIV,
+};
+
+static struct clk pll1_aux_clk = {
+        .name = "pll1_aux_clk",
+        .parent = &pll1_clk,
+        .flags = CLK_PLL | PRE_PLL,
+};
+
+static struct clk pll2_clk = {
+        .name = "pll2_clk",
+        .parent = &ref_clk,
+        .pll_data = &pll2_data,
+        .flags = CLK_PLL,
+};
+
+static struct clk pll2_sysclk1 = {
+        .name = "pll2_sysclk1",
+        .parent = &pll2_clk,
+        .flags = CLK_PLL,
+        .div_reg = PLLDIV1,
+};
+
+static struct clk dsp_clk = {
+        .name = "dsp",
+        .parent = &pll1_sysclk1,
+        .lpsc = DM646X_LPSC_C64X_CPU,
+        .flags = PSC_DSP,
+        .usecount = 1,                  /* REVISIT how to disable? */
+};
+
+static struct clk arm_clk = {
+        .name = "arm",
+        .parent = &pll1_sysclk2,
+        .lpsc = DM646X_LPSC_ARM,
+        .flags = ALWAYS_ENABLED,
+};
+
+static struct clk uart0_clk = {
+        .name = "uart0",
+        .parent = &aux_clkin,
+        .lpsc = DM646X_LPSC_UART0,
+};
+
+static struct clk uart1_clk = {
+        .name = "uart1",
+        .parent = &aux_clkin,
+        .lpsc = DM646X_LPSC_UART1,
+};
+
+static struct clk uart2_clk = {
+        .name = "uart2",
+        .parent = &aux_clkin,
+        .lpsc = DM646X_LPSC_UART2,
+};
+
+static struct clk i2c_clk = {
+        .name = "I2CCLK",
+        .parent = &pll1_sysclk3,
+        .lpsc = DM646X_LPSC_I2C,
+};
+
+static struct clk gpio_clk = {
+        .name = "gpio",
+        .parent = &pll1_sysclk3,
+        .lpsc = DM646X_LPSC_GPIO,
+};
+
+static struct clk aemif_clk = {
+        .name = "aemif",
+        .parent = &pll1_sysclk3,
+        .lpsc = DM646X_LPSC_AEMIF,
+        .flags = ALWAYS_ENABLED,
+};
+
+static struct clk emac_clk = {
+        .name = "emac",
+        .parent = &pll1_sysclk3,
+        .lpsc = DM646X_LPSC_EMAC,
+};
+
+static struct clk pwm0_clk = {
+        .name = "pwm0",
+        .parent = &pll1_sysclk3,
+        .lpsc = DM646X_LPSC_PWM0,
+        .usecount = 1,            /* REVIST: disabling hangs system */
+};
+
+static struct clk pwm1_clk = {
+        .name = "pwm1",
+        .parent = &pll1_sysclk3,
+        .lpsc = DM646X_LPSC_PWM1,
+        .usecount = 1,            /* REVIST: disabling hangs system */
+};
+
+static struct clk timer0_clk = {
+        .name = "timer0",
+        .parent = &pll1_sysclk3,
+        .lpsc = DM646X_LPSC_TIMER0,
+};
+
+static struct clk timer1_clk = {
+        .name = "timer1",
+        .parent = &pll1_sysclk3,
+        .lpsc = DM646X_LPSC_TIMER1,
+};
+
+static struct clk timer2_clk = {
+        .name = "timer2",
+        .parent = &pll1_sysclk3,
+        .flags = ALWAYS_ENABLED, /* no LPSC, always enabled; c.f. spruep9a */
+};
+
+static struct clk vpif0_clk = {
+        .name = "vpif0",
+        .parent = &ref_clk,
+        .lpsc = DM646X_LPSC_VPSSMSTR,
+        .flags = ALWAYS_ENABLED,
+};
+
+static struct clk vpif1_clk = {
+        .name = "vpif1",
+        .parent = &ref_clk,
+        .lpsc = DM646X_LPSC_VPSSSLV,
+        .flags = ALWAYS_ENABLED,
+};
+
+struct davinci_clk dm646x_clks[] = {
+        CLK(NULL, "ref", &ref_clk),
+        CLK(NULL, "aux", &aux_clkin),
+        CLK(NULL, "pll1", &pll1_clk),
+        CLK(NULL, "pll1_sysclk", &pll1_sysclk1),
+        CLK(NULL, "pll1_sysclk", &pll1_sysclk2),
+        CLK(NULL, "pll1_sysclk", &pll1_sysclk3),
+        CLK(NULL, "pll1_sysclk", &pll1_sysclk4),
+        CLK(NULL, "pll1_sysclk", &pll1_sysclk5),
+        CLK(NULL, "pll1_sysclk", &pll1_sysclk6),
+        CLK(NULL, "pll1_sysclk", &pll1_sysclk8),
+        CLK(NULL, "pll1_sysclk", &pll1_sysclk9),
+        CLK(NULL, "pll1_sysclk", &pll1_sysclkbp),
+        CLK(NULL, "pll1_aux", &pll1_aux_clk),
+        CLK(NULL, "pll2", &pll2_clk),
+        CLK(NULL, "pll2_sysclk1", &pll2_sysclk1),
+        CLK(NULL, "dsp", &dsp_clk),
+        CLK(NULL, "arm", &arm_clk),
+        CLK(NULL, "uart0", &uart0_clk),
+        CLK(NULL, "uart1", &uart1_clk),
+        CLK(NULL, "uart2", &uart2_clk),
+        CLK("i2c_davinci.1", NULL, &i2c_clk),
+        CLK(NULL, "gpio", &gpio_clk),
+        CLK(NULL, "aemif", &aemif_clk),
+        CLK("davinci_emac.1", NULL, &emac_clk),
+        CLK(NULL, "pwm0", &pwm0_clk),
+        CLK(NULL, "pwm1", &pwm1_clk),
+        CLK(NULL, "timer0", &timer0_clk),
+        CLK(NULL, "timer1", &timer1_clk),
+        CLK("watchdog", NULL, &timer2_clk),
+        CLK(NULL, "vpif0", &vpif0_clk),
+        CLK(NULL, "vpif1", &vpif1_clk),
+        CLK(NULL, NULL, NULL),
+};
+
+/*
+ * Device specific mux setup
+ *
+ *      soc     description     mux  mode   mode  mux    dbg
+ *                              reg  offset mask  mode
+ */
+static const struct mux_config dm646x_pins[] = {
+MUX_CFG(DM646X, ATAEN,          0,   0,     1,    1,     true)
+
+MUX_CFG(DM646X, AUDCK1,         0,   29,    1,    0,     false)
+
+MUX_CFG(DM646X, AUDCK0,         0,   28,    1,    0,     false)
+
+MUX_CFG(DM646X, CRGMUX,                 0,   24,    7,    5,     true)
+
+MUX_CFG(DM646X, STSOMUX_DISABLE,        0,   22,    3,    0,     true)
+
+MUX_CFG(DM646X, STSIMUX_DISABLE,        0,   20,    3,    0,     true)
+
+MUX_CFG(DM646X, PTSOMUX_DISABLE,        0,   18,    3,    0,     true)
+
+MUX_CFG(DM646X, PTSIMUX_DISABLE,        0,   16,    3,    0,     true)
+
+MUX_CFG(DM646X, STSOMUX,                0,   22,    3,    2,     true)
+
+MUX_CFG(DM646X, STSIMUX,                0,   20,    3,    2,     true)
+
+MUX_CFG(DM646X, PTSOMUX_PARALLEL,       0,   18,    3,    2,     true)
+
+MUX_CFG(DM646X, PTSIMUX_PARALLEL,       0,   16,    3,    2,     true)
+
+MUX_CFG(DM646X, PTSOMUX_SERIAL,         0,   18,    3,    3,     true)
+
+MUX_CFG(DM646X, PTSIMUX_SERIAL,         0,   16,    3,    3,     true)
+};
+
+/*----------------------------------------------------------------------*/
+
+static const s8 dma_chan_dm646x_no_event[] = {
+         0,  1,  2,  3, 13,
+        14, 15, 24, 25, 26,
+        27, 30, 31, 54, 55,
+        56,
+        -1
+};
+
+static struct edma_soc_info dm646x_edma_info = {
+        .n_channel      = 64,
+        .n_region       = 6,    /* 0-1, 4-7 */
+        .n_slot         = 512,
+        .n_tc           = 4,
+        .noevent        = dma_chan_dm646x_no_event,
+};
+
+static struct resource edma_resources[] = {
+        {
+                .name   = "edma_cc",
+                .start  = 0x01c00000,
+                .end    = 0x01c00000 + SZ_64K - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .name   = "edma_tc0",
+                .start  = 0x01c10000,
+                .end    = 0x01c10000 + SZ_1K - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .name   = "edma_tc1",
+                .start  = 0x01c10400,
+                .end    = 0x01c10400 + SZ_1K - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .name   = "edma_tc2",
+                .start  = 0x01c10800,
+                .end    = 0x01c10800 + SZ_1K - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .name   = "edma_tc3",
+                .start  = 0x01c10c00,
+                .end    = 0x01c10c00 + SZ_1K - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = IRQ_CCINT0,
+                .flags  = IORESOURCE_IRQ,
+        },
+        {
+                .start  = IRQ_CCERRINT,
+                .flags  = IORESOURCE_IRQ,
+        },
+        /* not using TC*_ERR */
+};
+
+static struct platform_device dm646x_edma_device = {
+        .name                   = "edma",
+        .id                     = -1,
+        .dev.platform_data      = &dm646x_edma_info,
+        .num_resources          = ARRAY_SIZE(edma_resources),
+        .resource               = edma_resources,
+};
+
+/*----------------------------------------------------------------------*/
+
+void __init dm646x_init(void)
+{
+        davinci_clk_init(dm646x_clks);
+        davinci_mux_register(dm646x_pins, ARRAY_SIZE(dm646x_pins));
+}
+
+static int __init dm646x_init_devices(void)
+{
+        if (!cpu_is_davinci_dm646x())
+                return 0;
+
+        platform_device_register(&dm646x_edma_device);
+        return 0;
+}
+postcore_initcall(dm646x_init_devices);
diff --git a/arch/arm/mach-davinci/include/mach/dm646x.h b/arch/arm/mach-davinci/include/mach/dm646x.h
new file mode 100644
index 000000000000..d917939af158
--- /dev/null
+++ b/arch/arm/mach-davinci/include/mach/dm646x.h
@@ -0,0 +1,18 @@
+/*
+ * Chip specific defines for DM646x SoC
+ *
+ * Author: Kevin Hilman, Deep Root Systems, LLC
+ *
+ * 2007 (c) Deep Root Systems, LLC. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#ifndef __ASM_ARCH_DM646X_H
+#define __ASM_ARCH_DM646X_H
+
+#include <mach/hardware.h>
+
+void __init dm646x_init(void);
+
+#endif /* __ASM_ARCH_DM646X_H */