/* * DM355 leopard board support * * Based on board-dm355-evm.c * * 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/err.h> #include <linux/platform_device.h> #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> #include <linux/mtd/nand.h> #include <linux/i2c.h> #include <linux/gpio.h> #include <linux/clk.h> #include <linux/spi/spi.h> #include <linux/spi/eeprom.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> #include <linux/platform_data/i2c-davinci.h> #include <mach/serial.h> #include <linux/platform_data/mtd-davinci.h> #include <linux/platform_data/mmc-davinci.h> #include <linux/platform_data/usb-davinci.h> #include "davinci.h" /* NOTE: this is geared for the standard config, with a socketed * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors. If you * swap chips, maybe with a different block size, partitioning may * need to be changed. */ #define NAND_BLOCK_SIZE SZ_128K static struct mtd_partition davinci_nand_partitions[] = { { /* UBL (a few copies) plus U-Boot */ .name = "bootloader", .offset = 0, .size = 15 * NAND_BLOCK_SIZE, .mask_flags = MTD_WRITEABLE, /* force read-only */ }, { /* U-Boot environment */ .name = "params", .offset = MTDPART_OFS_APPEND, .size = 1 * NAND_BLOCK_SIZE, .mask_flags = 0, }, { .name = "kernel", .offset = MTDPART_OFS_APPEND, .size = SZ_4M, .mask_flags = 0, }, { .name = "filesystem1", .offset = MTDPART_OFS_APPEND, .size = SZ_512M, .mask_flags = 0, }, { .name = "filesystem2", .offset = MTDPART_OFS_APPEND, .size = MTDPART_SIZ_FULL, .mask_flags = 0, } /* two blocks with bad block table (and mirror) at the end */ }; static struct davinci_nand_pdata davinci_nand_data = { .mask_chipsel = BIT(14), .parts = davinci_nand_partitions, .nr_parts = ARRAY_SIZE(davinci_nand_partitions), .ecc_mode = NAND_ECC_HW_SYNDROME, .ecc_bits = 4, .bbt_options = NAND_BBT_USE_FLASH, }; static struct resource davinci_nand_resources[] = { { .start = DM355_ASYNC_EMIF_DATA_CE0_BASE, .end = DM355_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1, .flags = IORESOURCE_MEM, }, { .start = DM355_ASYNC_EMIF_CONTROL_BASE, .end = DM355_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1, .flags = IORESOURCE_MEM, }, }; static struct platform_device davinci_nand_device = { .name = "davinci_nand", .id = 0, .num_resources = ARRAY_SIZE(davinci_nand_resources), .resource = davinci_nand_resources, .dev = { .platform_data = &davinci_nand_data, }, }; static struct davinci_i2c_platform_data i2c_pdata = { .bus_freq = 400 /* kHz */, .bus_delay = 0 /* usec */, }; static int leopard_mmc_gpio = -EINVAL; static void dm355leopard_mmcsd_gpios(unsigned gpio) { gpio_request(gpio + 0, "mmc0_ro"); gpio_request(gpio + 1, "mmc0_cd"); gpio_request(gpio + 2, "mmc1_ro"); gpio_request(gpio + 3, "mmc1_cd"); /* we "know" these are input-only so we don't * need to call gpio_direction_input() */ leopard_mmc_gpio = gpio; } static struct i2c_board_info dm355leopard_i2c_info[] = { { I2C_BOARD_INFO("dm355leopard_msp", 0x25), .platform_data = dm355leopard_mmcsd_gpios, /* plus irq */ }, /* { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }, */ /* { I2C_BOARD_INFO("tvp5146", 0x5d), }, */ }; static void __init leopard_init_i2c(void) { davinci_init_i2c(&i2c_pdata); gpio_request(5, "dm355leopard_msp"); gpio_direction_input(5); dm355leopard_i2c_info[0].irq = gpio_to_irq(5); i2c_register_board_info(1, dm355leopard_i2c_info, ARRAY_SIZE(dm355leopard_i2c_info)); } static struct resource dm355leopard_dm9000_rsrc[] = { { /* addr */ .start = 0x04000000, .end = 0x04000001, .flags = IORESOURCE_MEM, }, { /* data */ .start = 0x04000016, .end = 0x04000017, .flags = IORESOURCE_MEM, }, { .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */, }, }; static struct platform_device dm355leopard_dm9000 = { .name = "dm9000", .id = -1, .resource = dm355leopard_dm9000_rsrc, .num_resources = ARRAY_SIZE(dm355leopard_dm9000_rsrc), }; static struct platform_device *davinci_leopard_devices[] __initdata = { &dm355leopard_dm9000, &davinci_nand_device, }; static struct davinci_uart_config uart_config __initdata = { .enabled_uarts = (1 << 0), }; static void __init dm355_leopard_map_io(void) { dm355_init(); } static int dm355leopard_mmc_get_cd(int module) { if (!gpio_is_valid(leopard_mmc_gpio)) return -ENXIO; /* low == card present */ return !gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 1); } static int dm355leopard_mmc_get_ro(int module) { if (!gpio_is_valid(leopard_mmc_gpio)) return -ENXIO; /* high == card's write protect switch active */ return gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 0); } static struct davinci_mmc_config dm355leopard_mmc_config = { .get_cd = dm355leopard_mmc_get_cd, .get_ro = dm355leopard_mmc_get_ro, .wires = 4, .max_freq = 50000000, .caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED, }; /* Don't connect anything to J10 unless you're only using USB host * mode *and* have to do so with some kind of gender-bender. If * you have proper Mini-B or Mini-A cables (or Mini-A adapters) * the ID pin won't need any help. */ #ifdef CONFIG_USB_MUSB_PERIPHERAL #define USB_ID_VALUE 0 /* ID pulled high; *should* float */ #else #define USB_ID_VALUE 1 /* ID pulled low */ #endif static struct spi_eeprom at25640a = { .byte_len = SZ_64K / 8, .name = "at25640a", .page_size = 32, .flags = EE_ADDR2, }; static struct spi_board_info dm355_leopard_spi_info[] __initconst = { { .modalias = "at25", .platform_data = &at25640a, .max_speed_hz = 10 * 1000 * 1000, /* at 3v3 */ .bus_num = 0, .chip_select = 0, .mode = SPI_MODE_0, }, }; static __init void dm355_leopard_init(void) { struct clk *aemif; gpio_request(9, "dm9000"); gpio_direction_input(9); dm355leopard_dm9000_rsrc[2].start = gpio_to_irq(9); aemif = clk_get(&dm355leopard_dm9000.dev, "aemif"); if (IS_ERR(aemif)) WARN("%s: unable to get AEMIF clock\n", __func__); else clk_prepare_enable(aemif); platform_add_devices(davinci_leopard_devices, ARRAY_SIZE(davinci_leopard_devices)); leopard_init_i2c(); davinci_serial_init(&uart_config); /* NOTE: NAND flash timings set by the UBL are slower than * needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204 * but could be 0x0400008c for about 25% faster page reads. */ gpio_request(2, "usb_id_toggle"); gpio_direction_output(2, USB_ID_VALUE); /* irlml6401 switches over 1A in under 8 msec */ davinci_setup_usb(1000, 8); davinci_setup_mmc(0, &dm355leopard_mmc_config); davinci_setup_mmc(1, &dm355leopard_mmc_config); dm355_init_spi0(BIT(0), dm355_leopard_spi_info, ARRAY_SIZE(dm355_leopard_spi_info)); } MACHINE_START(DM355_LEOPARD, "DaVinci DM355 leopard") .atag_offset = 0x100, .map_io = dm355_leopard_map_io, .init_irq = davinci_irq_init, .init_time = davinci_timer_init, .init_machine = dm355_leopard_init, .init_late = davinci_init_late, .dma_zone_size = SZ_128M, .restart = davinci_restart, MACHINE_END