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linux/arch/arm/mach-davinci/board-dm644x-evm.c
Muralidharan Karicheri ab8e8df874 davinci: DM644x platform changes for vpfe capture 
DM644x platform and board setup

This adds platform and board setup changes required to support
vpfe capture driver on DM644x

Tested video capture on DM6446 with tvp514x driver

Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Reviewed-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Reviewed-by: David Brownell <david-b@pacbell.net>
Signed-off-by: Muralidharan Karicheri <m-karicheri2@ti.com>
Signed-off-by: Denys Dmytriyenko <denis@denix.org>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-09-16 10:25:26 -07:00

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/*
* TI DaVinci EVM board support
*
* Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
*
* 2007 (c) 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.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/leds.h>
#include <linux/memory.h>
#include <linux/i2c.h>
#include <linux/i2c/pcf857x.h>
#include <linux/i2c/at24.h>
#include <linux/etherdevice.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/io.h>
#include <linux/phy.h>
#include <linux/clk.h>
#include <linux/videodev2.h>
#include <media/tvp514x.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/dm644x.h>
#include <mach/common.h>
#include <mach/i2c.h>
#include <mach/serial.h>
#include <mach/mux.h>
#include <mach/psc.h>
#include <mach/nand.h>
#include <mach/mmc.h>
#include <mach/emac.h>
#define DM644X_EVM_PHY_MASK (0x2)
#define DM644X_EVM_MDIO_FREQUENCY (2200000) /* PHY bus frequency */
#define DAVINCI_CFC_ATA_BASE 0x01C66000
#define DAVINCI_ASYNC_EMIF_CONTROL_BASE 0x01e00000
#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE 0x02000000
#define DAVINCI_ASYNC_EMIF_DATA_CE1_BASE 0x04000000
#define DAVINCI_ASYNC_EMIF_DATA_CE2_BASE 0x06000000
#define DAVINCI_ASYNC_EMIF_DATA_CE3_BASE 0x08000000
#define LXT971_PHY_ID (0x001378e2)
#define LXT971_PHY_MASK (0xfffffff0)
static struct mtd_partition davinci_evm_norflash_partitions[] = {
/* bootloader (UBL, U-Boot, etc) in first 5 sectors */
{
.name = "bootloader",
.offset = 0,
.size = 5 * SZ_64K,
.mask_flags = MTD_WRITEABLE, /* force read-only */
},
/* bootloader params in the next 1 sectors */
{
.name = "params",
.offset = MTDPART_OFS_APPEND,
.size = SZ_64K,
.mask_flags = 0,
},
/* kernel */
{
.name = "kernel",
.offset = MTDPART_OFS_APPEND,
.size = SZ_2M,
.mask_flags = 0
},
/* file system */
{
.name = "filesystem",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
.mask_flags = 0
}
};
static struct physmap_flash_data davinci_evm_norflash_data = {
.width = 2,
.parts = davinci_evm_norflash_partitions,
.nr_parts = ARRAY_SIZE(davinci_evm_norflash_partitions),
};
/* NOTE: CFI probe will correctly detect flash part as 32M, but EMIF
* limits addresses to 16M, so using addresses past 16M will wrap */
static struct resource davinci_evm_norflash_resource = {
.start = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE,
.end = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_16M - 1,
.flags = IORESOURCE_MEM,
};
static struct platform_device davinci_evm_norflash_device = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &davinci_evm_norflash_data,
},
.num_resources = 1,
.resource = &davinci_evm_norflash_resource,
};
/* DM644x EVM includes a 64 MByte small-page NAND flash (16K blocks).
* It may used instead of the (default) NOR chip to boot, using TI's
* tools to install the secondary boot loader (UBL) and U-Boot.
*/
struct mtd_partition davinci_evm_nandflash_partition[] = {
/* Bootloader layout depends on whose u-boot is installed, but we
* can hide all the details.
* - block 0 for u-boot environment ... in mainline u-boot
* - block 1 for UBL (plus up to four backup copies in blocks 2..5)
* - blocks 6...? for u-boot
* - blocks 16..23 for u-boot environment ... in TI's u-boot
*/
{
.name = "bootloader",
.offset = 0,
.size = SZ_256K + SZ_128K,
.mask_flags = MTD_WRITEABLE, /* force read-only */
},
/* Kernel */
{
.name = "kernel",
.offset = MTDPART_OFS_APPEND,
.size = SZ_4M,
.mask_flags = 0,
},
/* File system (older GIT kernels started this on the 5MB mark) */
{
.name = "filesystem",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
.mask_flags = 0,
}
/* A few blocks at end hold a flash BBT ... created by TI's CCS
* using flashwriter_nand.out, but ignored by TI's versions of
* Linux and u-boot. We boot faster by using them.
*/
};
static struct davinci_nand_pdata davinci_evm_nandflash_data = {
.parts = davinci_evm_nandflash_partition,
.nr_parts = ARRAY_SIZE(davinci_evm_nandflash_partition),
.ecc_mode = NAND_ECC_HW,
.options = NAND_USE_FLASH_BBT,
};
static struct resource davinci_evm_nandflash_resource[] = {
{
.start = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE,
.end = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_16M - 1,
.flags = IORESOURCE_MEM,
}, {
.start = DAVINCI_ASYNC_EMIF_CONTROL_BASE,
.end = DAVINCI_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device davinci_evm_nandflash_device = {
.name = "davinci_nand",
.id = 0,
.dev = {
.platform_data = &davinci_evm_nandflash_data,
},
.num_resources = ARRAY_SIZE(davinci_evm_nandflash_resource),
.resource = davinci_evm_nandflash_resource,
};
static u64 davinci_fb_dma_mask = DMA_BIT_MASK(32);
static struct platform_device davinci_fb_device = {
.name = "davincifb",
.id = -1,
.dev = {
.dma_mask = &davinci_fb_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
.num_resources = 0,
};
static struct tvp514x_platform_data tvp5146_pdata = {
.clk_polarity = 0,
.hs_polarity = 1,
.vs_polarity = 1
};
#define TVP514X_STD_ALL (V4L2_STD_NTSC | V4L2_STD_PAL)
/* Inputs available at the TVP5146 */
static struct v4l2_input tvp5146_inputs[] = {
{
.index = 0,
.name = "Composite",
.type = V4L2_INPUT_TYPE_CAMERA,
.std = TVP514X_STD_ALL,
},
{
.index = 1,
.name = "S-Video",
.type = V4L2_INPUT_TYPE_CAMERA,
.std = TVP514X_STD_ALL,
},
};
/*
* this is the route info for connecting each input to decoder
* ouput that goes to vpfe. There is a one to one correspondence
* with tvp5146_inputs
*/
static struct vpfe_route tvp5146_routes[] = {
{
.input = INPUT_CVBS_VI2B,
.output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
},
{
.input = INPUT_SVIDEO_VI2C_VI1C,
.output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
},
};
static struct vpfe_subdev_info vpfe_sub_devs[] = {
{
.name = "tvp5146",
.grp_id = 0,
.num_inputs = ARRAY_SIZE(tvp5146_inputs),
.inputs = tvp5146_inputs,
.routes = tvp5146_routes,
.can_route = 1,
.ccdc_if_params = {
.if_type = VPFE_BT656,
.hdpol = VPFE_PINPOL_POSITIVE,
.vdpol = VPFE_PINPOL_POSITIVE,
},
.board_info = {
I2C_BOARD_INFO("tvp5146", 0x5d),
.platform_data = &tvp5146_pdata,
},
},
};
static struct vpfe_config vpfe_cfg = {
.num_subdevs = ARRAY_SIZE(vpfe_sub_devs),
.sub_devs = vpfe_sub_devs,
.card_name = "DM6446 EVM",
.ccdc = "DM6446 CCDC",
};
static struct platform_device rtc_dev = {
.name = "rtc_davinci_evm",
.id = -1,
};
static struct resource ide_resources[] = {
{
.start = DAVINCI_CFC_ATA_BASE,
.end = DAVINCI_CFC_ATA_BASE + 0x7ff,
.flags = IORESOURCE_MEM,
},
{
.start = IRQ_IDE,
.end = IRQ_IDE,
.flags = IORESOURCE_IRQ,
},
};
static u64 ide_dma_mask = DMA_BIT_MASK(32);
static struct platform_device ide_dev = {
.name = "palm_bk3710",
.id = -1,
.resource = ide_resources,
.num_resources = ARRAY_SIZE(ide_resources),
.dev = {
.dma_mask = &ide_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
};
static struct snd_platform_data dm644x_evm_snd_data;
/*----------------------------------------------------------------------*/
/*
* I2C GPIO expanders
*/
#define PCF_Uxx_BASE(x) (DAVINCI_N_GPIO + ((x) * 8))
/* U2 -- LEDs */
static struct gpio_led evm_leds[] = {
{ .name = "DS8", .active_low = 1,
.default_trigger = "heartbeat", },
{ .name = "DS7", .active_low = 1, },
{ .name = "DS6", .active_low = 1, },
{ .name = "DS5", .active_low = 1, },
{ .name = "DS4", .active_low = 1, },
{ .name = "DS3", .active_low = 1, },
{ .name = "DS2", .active_low = 1,
.default_trigger = "mmc0", },
{ .name = "DS1", .active_low = 1,
.default_trigger = "ide-disk", },
};
static const 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 ngpio, void *c)
{
struct gpio_led *leds = evm_leds;
int status;
while (ngpio--) {
leds->gpio = gpio++;
leds++;
}
/* what an extremely annoying way to be forced to handle
* device unregistration ...
*/
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 struct pcf857x_platform_data pcf_data_u2 = {
.gpio_base = PCF_Uxx_BASE(0),
.setup = evm_led_setup,
.teardown = evm_led_teardown,
};
/* U18 - A/V clock generator and user switch */
static int sw_gpio;
static ssize_t
sw_show(struct device *d, struct device_attribute *a, char *buf)
{
char *s = gpio_get_value_cansleep(sw_gpio) ? "on\n" : "off\n";
strcpy(buf, s);
return strlen(s);
}
static DEVICE_ATTR(user_sw, S_IRUGO, sw_show, NULL);
static int
evm_u18_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
{
int status;
/* export dip switch option */
sw_gpio = gpio + 7;
status = gpio_request(sw_gpio, "user_sw");
if (status == 0)
status = gpio_direction_input(sw_gpio);
if (status == 0)
status = device_create_file(&client->dev, &dev_attr_user_sw);
else
gpio_free(sw_gpio);
if (status != 0)
sw_gpio = -EINVAL;
/* audio PLL: 48 kHz (vs 44.1 or 32), single rate (vs double) */
gpio_request(gpio + 3, "pll_fs2");
gpio_direction_output(gpio + 3, 0);
gpio_request(gpio + 2, "pll_fs1");
gpio_direction_output(gpio + 2, 0);
gpio_request(gpio + 1, "pll_sr");
gpio_direction_output(gpio + 1, 0);
return 0;
}
static int
evm_u18_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
{
gpio_free(gpio + 1);
gpio_free(gpio + 2);
gpio_free(gpio + 3);
if (sw_gpio > 0) {
device_remove_file(&client->dev, &dev_attr_user_sw);
gpio_free(sw_gpio);
}
return 0;
}
static struct pcf857x_platform_data pcf_data_u18 = {
.gpio_base = PCF_Uxx_BASE(1),
.n_latch = (1 << 3) | (1 << 2) | (1 << 1),
.setup = evm_u18_setup,
.teardown = evm_u18_teardown,
};
/* U35 - various I/O signals used to manage USB, CF, ATA, etc */
static int
evm_u35_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
{
/* p0 = nDRV_VBUS (initial: don't supply it) */
gpio_request(gpio + 0, "nDRV_VBUS");
gpio_direction_output(gpio + 0, 1);
/* p1 = VDDIMX_EN */
gpio_request(gpio + 1, "VDDIMX_EN");
gpio_direction_output(gpio + 1, 1);
/* p2 = VLYNQ_EN */
gpio_request(gpio + 2, "VLYNQ_EN");
gpio_direction_output(gpio + 2, 1);
/* p3 = n3V3_CF_RESET (initial: stay in reset) */
gpio_request(gpio + 3, "nCF_RESET");
gpio_direction_output(gpio + 3, 0);
/* (p4 unused) */
/* p5 = 1V8_WLAN_RESET (initial: stay in reset) */
gpio_request(gpio + 5, "WLAN_RESET");
gpio_direction_output(gpio + 5, 1);
/* p6 = nATA_SEL (initial: select) */
gpio_request(gpio + 6, "nATA_SEL");
gpio_direction_output(gpio + 6, 0);
/* p7 = nCF_SEL (initial: deselect) */
gpio_request(gpio + 7, "nCF_SEL");
gpio_direction_output(gpio + 7, 1);
/* irlml6401 switches over 1A, in under 8 msec;
* now it can be managed by nDRV_VBUS ...
*/
setup_usb(500, 8);
return 0;
}
static int
evm_u35_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
{
gpio_free(gpio + 7);
gpio_free(gpio + 6);
gpio_free(gpio + 5);
gpio_free(gpio + 3);
gpio_free(gpio + 2);
gpio_free(gpio + 1);
gpio_free(gpio + 0);
return 0;
}
static struct pcf857x_platform_data pcf_data_u35 = {
.gpio_base = PCF_Uxx_BASE(2),
.setup = evm_u35_setup,
.teardown = evm_u35_teardown,
};
/*----------------------------------------------------------------------*/
/* Most of this EEPROM is unused, but U-Boot uses some data:
* - 0x7f00, 6 bytes Ethernet Address
* - 0x0039, 1 byte NTSC vs PAL (bit 0x80 == PAL)
* - ... newer boards may have more
*/
static struct at24_platform_data eeprom_info = {
.byte_len = (256*1024) / 8,
.page_size = 64,
.flags = AT24_FLAG_ADDR16,
.setup = davinci_get_mac_addr,
.context = (void *)0x7f00,
};
/*
* MSP430 supports RTC, card detection, input from IR remote, and
* a bit more. It triggers interrupts on GPIO(7) from pressing
* buttons on the IR remote, and for card detect switches.
*/
static struct i2c_client *dm6446evm_msp;
static int dm6446evm_msp_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
dm6446evm_msp = client;
return 0;
}
static int dm6446evm_msp_remove(struct i2c_client *client)
{
dm6446evm_msp = NULL;
return 0;
}
static const struct i2c_device_id dm6446evm_msp_ids[] = {
{ "dm6446evm_msp", 0, },
{ /* end of list */ },
};
static struct i2c_driver dm6446evm_msp_driver = {
.driver.name = "dm6446evm_msp",
.id_table = dm6446evm_msp_ids,
.probe = dm6446evm_msp_probe,
.remove = dm6446evm_msp_remove,
};
static int dm6444evm_msp430_get_pins(void)
{
static const char txbuf[2] = { 2, 4, };
char buf[4];
struct i2c_msg msg[2] = {
{
.addr = dm6446evm_msp->addr,
.flags = 0,
.len = 2,
.buf = (void __force *)txbuf,
},
{
.addr = dm6446evm_msp->addr,
.flags = I2C_M_RD,
.len = 4,
.buf = buf,
},
};
int status;
if (!dm6446evm_msp)
return -ENXIO;
/* Command 4 == get input state, returns port 2 and port3 data
* S Addr W [A] len=2 [A] cmd=4 [A]
* RS Addr R [A] [len=4] A [cmd=4] A [port2] A [port3] N P
*/
status = i2c_transfer(dm6446evm_msp->adapter, msg, 2);
if (status < 0)
return status;
dev_dbg(&dm6446evm_msp->dev,
"PINS: %02x %02x %02x %02x\n",
buf[0], buf[1], buf[2], buf[3]);
return (buf[3] << 8) | buf[2];
}
static int dm6444evm_mmc_get_cd(int module)
{
int status = dm6444evm_msp430_get_pins();
return (status < 0) ? status : !(status & BIT(1));
}
static int dm6444evm_mmc_get_ro(int module)
{
int status = dm6444evm_msp430_get_pins();
return (status < 0) ? status : status & BIT(6 + 8);
}
static struct davinci_mmc_config dm6446evm_mmc_config = {
.get_cd = dm6444evm_mmc_get_cd,
.get_ro = dm6444evm_mmc_get_ro,
.wires = 4,
.version = MMC_CTLR_VERSION_1
};
static struct i2c_board_info __initdata i2c_info[] = {
{
I2C_BOARD_INFO("dm6446evm_msp", 0x23),
},
{
I2C_BOARD_INFO("pcf8574", 0x38),
.platform_data = &pcf_data_u2,
},
{
I2C_BOARD_INFO("pcf8574", 0x39),
.platform_data = &pcf_data_u18,
},
{
I2C_BOARD_INFO("pcf8574", 0x3a),
.platform_data = &pcf_data_u35,
},
{
I2C_BOARD_INFO("24c256", 0x50),
.platform_data = &eeprom_info,
},
{
I2C_BOARD_INFO("tlv320aic33", 0x1b),
},
};
/* The msp430 uses a slow bitbanged I2C implementation (ergo 20 KHz),
* which requires 100 usec of idle bus after i2c writes sent to it.
*/
static struct davinci_i2c_platform_data i2c_pdata = {
.bus_freq = 20 /* kHz */,
.bus_delay = 100 /* usec */,
};
static void __init evm_init_i2c(void)
{
davinci_init_i2c(&i2c_pdata);
i2c_add_driver(&dm6446evm_msp_driver);
i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
}
static struct platform_device *davinci_evm_devices[] __initdata = {
&davinci_fb_device,
&rtc_dev,
};
static struct davinci_uart_config uart_config __initdata = {
.enabled_uarts = (1 << 0),
};
static void __init
davinci_evm_map_io(void)
{
/* setup input configuration for VPFE input devices */
dm644x_set_vpfe_config(&vpfe_cfg);
dm644x_init();
}
static int davinci_phy_fixup(struct phy_device *phydev)
{
unsigned int control;
/* CRITICAL: Fix for increasing PHY signal drive strength for
* TX lockup issue. On DaVinci EVM, the Intel LXT971 PHY
* signal strength was low causing TX to fail randomly. The
* fix is to Set bit 11 (Increased MII drive strength) of PHY
* register 26 (Digital Config register) on this phy. */
control = phy_read(phydev, 26);
phy_write(phydev, 26, (control | 0x800));
return 0;
}
#if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \
defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE)
#define HAS_ATA 1
#else
#define HAS_ATA 0
#endif
#if defined(CONFIG_MTD_PHYSMAP) || \
defined(CONFIG_MTD_PHYSMAP_MODULE)
#define HAS_NOR 1
#else
#define HAS_NOR 0
#endif
#if defined(CONFIG_MTD_NAND_DAVINCI) || \
defined(CONFIG_MTD_NAND_DAVINCI_MODULE)
#define HAS_NAND 1
#else
#define HAS_NAND 0
#endif
static __init void davinci_evm_init(void)
{
struct clk *aemif_clk;
struct davinci_soc_info *soc_info = &davinci_soc_info;
aemif_clk = clk_get(NULL, "aemif");
clk_enable(aemif_clk);
if (HAS_ATA) {
if (HAS_NAND || HAS_NOR)
pr_warning("WARNING: both IDE and Flash are "
"enabled, but they share AEMIF pins.\n"
"\tDisable IDE for NAND/NOR support.\n");
davinci_cfg_reg(DM644X_HPIEN_DISABLE);
davinci_cfg_reg(DM644X_ATAEN);
davinci_cfg_reg(DM644X_HDIREN);
platform_device_register(&ide_dev);
} else if (HAS_NAND || HAS_NOR) {
davinci_cfg_reg(DM644X_HPIEN_DISABLE);
davinci_cfg_reg(DM644X_ATAEN_DISABLE);
/* only one device will be jumpered and detected */
if (HAS_NAND) {
platform_device_register(&davinci_evm_nandflash_device);
evm_leds[7].default_trigger = "nand-disk";
if (HAS_NOR)
pr_warning("WARNING: both NAND and NOR flash "
"are enabled; disable one of them.\n");
} else if (HAS_NOR)
platform_device_register(&davinci_evm_norflash_device);
}
platform_add_devices(davinci_evm_devices,
ARRAY_SIZE(davinci_evm_devices));
evm_init_i2c();
davinci_setup_mmc(0, &dm6446evm_mmc_config);
davinci_serial_init(&uart_config);
dm644x_init_asp(&dm644x_evm_snd_data);
soc_info->emac_pdata->phy_mask = DM644X_EVM_PHY_MASK;
soc_info->emac_pdata->mdio_max_freq = DM644X_EVM_MDIO_FREQUENCY;
/* Register the fixup for PHY on DaVinci */
phy_register_fixup_for_uid(LXT971_PHY_ID, LXT971_PHY_MASK,
davinci_phy_fixup);
}
static __init void davinci_evm_irq_init(void)
{
davinci_irq_init();
}
MACHINE_START(DAVINCI_EVM, "DaVinci DM644x EVM")
/* Maintainer: MontaVista Software <source@mvista.com> */
.phys_io = IO_PHYS,
.io_pg_offst = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
.boot_params = (DAVINCI_DDR_BASE + 0x100),
.map_io = davinci_evm_map_io,
.init_irq = davinci_evm_irq_init,
.timer = &davinci_timer,
.init_machine = davinci_evm_init,
MACHINE_END
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