| /* |
| * 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, |
| .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_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, |
| .timer = &davinci_timer, |
| .init_machine = dm355_leopard_init, |
| .init_late = davinci_init_late, |
| .dma_zone_size = SZ_128M, |
| .restart = davinci_restart, |
| MACHINE_END |