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a40f73419f
This patch works with the following three flags from two headers (nand.h and bbm.h): (1) NAND_USE_FLASH_BBT (nand.h) (2) NAND_USE_FLASH_BBT_NO_OOB (nand.h) (3) NAND_BBT_NO_OOB (bbm.h) These flags are all related and interdependent, yet they were in different headers. Flag (2) is simply the combination of (1) and (3) and can be eliminated. This patch accomplishes the following: * eliminate NAND_USE_FLASH_BBT_NO_OOB (i.e., flag (2)) * move NAND_USE_FLASH_BBT (i.e., flag (1)) to bbm.h It's important to note that because (1) and (3) are now both found in bbm.h, they should NOT be used in the "nand_chip.options" field. I removed a small section from the mtdnand DocBook because it referes to NAND_USE_FLASH_BBT in nand.h, which has been moved to bbm.h. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
280 lines
7.0 KiB
C
280 lines
7.0 KiB
C
/*
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* DM355 leopard board support
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*
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* Based on board-dm355-evm.c
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/mtd/nand.h>
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#include <linux/i2c.h>
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#include <linux/gpio.h>
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#include <linux/clk.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/eeprom.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <mach/dm355.h>
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#include <mach/i2c.h>
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#include <mach/serial.h>
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#include <mach/nand.h>
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#include <mach/mmc.h>
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#include <mach/usb.h>
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/* NOTE: this is geared for the standard config, with a socketed
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* 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors. If you
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* swap chips, maybe with a different block size, partitioning may
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* need to be changed.
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*/
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#define NAND_BLOCK_SIZE SZ_128K
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static struct mtd_partition davinci_nand_partitions[] = {
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{
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/* UBL (a few copies) plus U-Boot */
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.name = "bootloader",
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.offset = 0,
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.size = 15 * NAND_BLOCK_SIZE,
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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}, {
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/* U-Boot environment */
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.name = "params",
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.offset = MTDPART_OFS_APPEND,
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.size = 1 * NAND_BLOCK_SIZE,
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.mask_flags = 0,
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}, {
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.name = "kernel",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_4M,
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.mask_flags = 0,
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}, {
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.name = "filesystem1",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_512M,
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.mask_flags = 0,
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}, {
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.name = "filesystem2",
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.offset = MTDPART_OFS_APPEND,
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.size = MTDPART_SIZ_FULL,
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.mask_flags = 0,
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}
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/* two blocks with bad block table (and mirror) at the end */
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};
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static struct davinci_nand_pdata davinci_nand_data = {
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.mask_chipsel = BIT(14),
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.parts = davinci_nand_partitions,
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.nr_parts = ARRAY_SIZE(davinci_nand_partitions),
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.ecc_mode = NAND_ECC_HW_SYNDROME,
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.bbt_options = NAND_USE_FLASH_BBT,
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};
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static struct resource davinci_nand_resources[] = {
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{
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.start = DM355_ASYNC_EMIF_DATA_CE0_BASE,
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.end = DM355_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
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.flags = IORESOURCE_MEM,
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}, {
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.start = DM355_ASYNC_EMIF_CONTROL_BASE,
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.end = DM355_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device davinci_nand_device = {
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.name = "davinci_nand",
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.id = 0,
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.num_resources = ARRAY_SIZE(davinci_nand_resources),
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.resource = davinci_nand_resources,
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.dev = {
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.platform_data = &davinci_nand_data,
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},
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};
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static struct davinci_i2c_platform_data i2c_pdata = {
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.bus_freq = 400 /* kHz */,
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.bus_delay = 0 /* usec */,
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};
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static int leopard_mmc_gpio = -EINVAL;
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static void dm355leopard_mmcsd_gpios(unsigned gpio)
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{
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gpio_request(gpio + 0, "mmc0_ro");
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gpio_request(gpio + 1, "mmc0_cd");
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gpio_request(gpio + 2, "mmc1_ro");
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gpio_request(gpio + 3, "mmc1_cd");
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/* we "know" these are input-only so we don't
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* need to call gpio_direction_input()
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*/
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leopard_mmc_gpio = gpio;
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}
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static struct i2c_board_info dm355leopard_i2c_info[] = {
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{ I2C_BOARD_INFO("dm355leopard_msp", 0x25),
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.platform_data = dm355leopard_mmcsd_gpios,
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/* plus irq */ },
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/* { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }, */
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/* { I2C_BOARD_INFO("tvp5146", 0x5d), }, */
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};
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static void __init leopard_init_i2c(void)
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{
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davinci_init_i2c(&i2c_pdata);
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gpio_request(5, "dm355leopard_msp");
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gpio_direction_input(5);
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dm355leopard_i2c_info[0].irq = gpio_to_irq(5);
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i2c_register_board_info(1, dm355leopard_i2c_info,
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ARRAY_SIZE(dm355leopard_i2c_info));
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}
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static struct resource dm355leopard_dm9000_rsrc[] = {
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{
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/* addr */
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.start = 0x04000000,
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.end = 0x04000001,
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.flags = IORESOURCE_MEM,
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}, {
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/* data */
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.start = 0x04000016,
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.end = 0x04000017,
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.flags = IORESOURCE_MEM,
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}, {
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.flags = IORESOURCE_IRQ
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| IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */,
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},
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};
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static struct platform_device dm355leopard_dm9000 = {
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.name = "dm9000",
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.id = -1,
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.resource = dm355leopard_dm9000_rsrc,
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.num_resources = ARRAY_SIZE(dm355leopard_dm9000_rsrc),
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};
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static struct platform_device *davinci_leopard_devices[] __initdata = {
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&dm355leopard_dm9000,
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&davinci_nand_device,
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};
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static struct davinci_uart_config uart_config __initdata = {
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.enabled_uarts = (1 << 0),
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};
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static void __init dm355_leopard_map_io(void)
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{
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dm355_init();
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}
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static int dm355leopard_mmc_get_cd(int module)
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{
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if (!gpio_is_valid(leopard_mmc_gpio))
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return -ENXIO;
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/* low == card present */
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return !gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 1);
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}
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static int dm355leopard_mmc_get_ro(int module)
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{
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if (!gpio_is_valid(leopard_mmc_gpio))
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return -ENXIO;
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/* high == card's write protect switch active */
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return gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 0);
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}
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static struct davinci_mmc_config dm355leopard_mmc_config = {
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.get_cd = dm355leopard_mmc_get_cd,
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.get_ro = dm355leopard_mmc_get_ro,
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.wires = 4,
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.max_freq = 50000000,
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.caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
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};
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/* Don't connect anything to J10 unless you're only using USB host
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* mode *and* have to do so with some kind of gender-bender. If
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* you have proper Mini-B or Mini-A cables (or Mini-A adapters)
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* the ID pin won't need any help.
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*/
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#ifdef CONFIG_USB_MUSB_PERIPHERAL
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#define USB_ID_VALUE 0 /* ID pulled high; *should* float */
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#else
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#define USB_ID_VALUE 1 /* ID pulled low */
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#endif
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static struct spi_eeprom at25640a = {
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.byte_len = SZ_64K / 8,
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.name = "at25640a",
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.page_size = 32,
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.flags = EE_ADDR2,
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};
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static struct spi_board_info dm355_leopard_spi_info[] __initconst = {
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{
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.modalias = "at25",
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.platform_data = &at25640a,
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.max_speed_hz = 10 * 1000 * 1000, /* at 3v3 */
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.bus_num = 0,
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.chip_select = 0,
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.mode = SPI_MODE_0,
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},
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};
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static __init void dm355_leopard_init(void)
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{
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struct clk *aemif;
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gpio_request(9, "dm9000");
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gpio_direction_input(9);
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dm355leopard_dm9000_rsrc[2].start = gpio_to_irq(9);
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aemif = clk_get(&dm355leopard_dm9000.dev, "aemif");
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if (IS_ERR(aemif))
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WARN("%s: unable to get AEMIF clock\n", __func__);
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else
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clk_enable(aemif);
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platform_add_devices(davinci_leopard_devices,
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ARRAY_SIZE(davinci_leopard_devices));
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leopard_init_i2c();
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davinci_serial_init(&uart_config);
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/* NOTE: NAND flash timings set by the UBL are slower than
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* needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204
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* but could be 0x0400008c for about 25% faster page reads.
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*/
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gpio_request(2, "usb_id_toggle");
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gpio_direction_output(2, USB_ID_VALUE);
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/* irlml6401 switches over 1A in under 8 msec */
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davinci_setup_usb(1000, 8);
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davinci_setup_mmc(0, &dm355leopard_mmc_config);
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davinci_setup_mmc(1, &dm355leopard_mmc_config);
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dm355_init_spi0(BIT(0), dm355_leopard_spi_info,
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ARRAY_SIZE(dm355_leopard_spi_info));
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}
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MACHINE_START(DM355_LEOPARD, "DaVinci DM355 leopard")
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.boot_params = (0x80000100),
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.map_io = dm355_leopard_map_io,
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.init_irq = davinci_irq_init,
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.timer = &davinci_timer,
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.init_machine = dm355_leopard_init,
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.dma_zone_size = SZ_128M,
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MACHINE_END
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