175 lines
4.1 KiB
C
175 lines
4.1 KiB
C
/*
|
|
* Texas Instruments TNETV107X EVM Board Support
|
|
*
|
|
* Copyright (C) 2010 Texas Instruments
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation version 2.
|
|
*
|
|
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
|
|
* kind, whether express or implied; without even the implied warranty
|
|
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/console.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/ratelimit.h>
|
|
#include <linux/mtd/mtd.h>
|
|
#include <linux/mtd/partitions.h>
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/mach-types.h>
|
|
|
|
#include <mach/irqs.h>
|
|
#include <mach/edma.h>
|
|
#include <mach/mux.h>
|
|
#include <mach/cp_intc.h>
|
|
#include <mach/tnetv107x.h>
|
|
|
|
#define EVM_MMC_WP_GPIO 21
|
|
#define EVM_MMC_CD_GPIO 24
|
|
|
|
static int initialize_gpio(int gpio, char *desc)
|
|
{
|
|
int ret;
|
|
|
|
ret = gpio_request(gpio, desc);
|
|
if (ret < 0) {
|
|
pr_err_ratelimited("cannot open %s gpio\n", desc);
|
|
return -ENOSYS;
|
|
}
|
|
gpio_direction_input(gpio);
|
|
return gpio;
|
|
}
|
|
|
|
static int mmc_get_cd(int index)
|
|
{
|
|
static int gpio;
|
|
|
|
if (!gpio)
|
|
gpio = initialize_gpio(EVM_MMC_CD_GPIO, "mmc card detect");
|
|
|
|
if (gpio < 0)
|
|
return gpio;
|
|
|
|
return gpio_get_value(gpio) ? 0 : 1;
|
|
}
|
|
|
|
static int mmc_get_ro(int index)
|
|
{
|
|
static int gpio;
|
|
|
|
if (!gpio)
|
|
gpio = initialize_gpio(EVM_MMC_WP_GPIO, "mmc write protect");
|
|
|
|
if (gpio < 0)
|
|
return gpio;
|
|
|
|
return gpio_get_value(gpio) ? 1 : 0;
|
|
}
|
|
|
|
static struct davinci_mmc_config mmc_config = {
|
|
.get_cd = mmc_get_cd,
|
|
.get_ro = mmc_get_ro,
|
|
.wires = 4,
|
|
.max_freq = 50000000,
|
|
.caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
|
|
.version = MMC_CTLR_VERSION_1,
|
|
};
|
|
|
|
static const short sdio1_pins[] __initdata = {
|
|
TNETV107X_SDIO1_CLK_1, TNETV107X_SDIO1_CMD_1,
|
|
TNETV107X_SDIO1_DATA0_1, TNETV107X_SDIO1_DATA1_1,
|
|
TNETV107X_SDIO1_DATA2_1, TNETV107X_SDIO1_DATA3_1,
|
|
TNETV107X_GPIO21, TNETV107X_GPIO24,
|
|
-1
|
|
};
|
|
|
|
static const short uart1_pins[] __initdata = {
|
|
TNETV107X_UART1_RD, TNETV107X_UART1_TD,
|
|
-1
|
|
};
|
|
|
|
static struct mtd_partition nand_partitions[] = {
|
|
/* bootloader (U-Boot, etc) in first 12 sectors */
|
|
{
|
|
.name = "bootloader",
|
|
.offset = 0,
|
|
.size = (12*SZ_128K),
|
|
.mask_flags = MTD_WRITEABLE, /* force read-only */
|
|
},
|
|
/* bootloader params in the next sector */
|
|
{
|
|
.name = "params",
|
|
.offset = MTDPART_OFS_NXTBLK,
|
|
.size = SZ_128K,
|
|
.mask_flags = MTD_WRITEABLE, /* force read-only */
|
|
},
|
|
/* kernel */
|
|
{
|
|
.name = "kernel",
|
|
.offset = MTDPART_OFS_NXTBLK,
|
|
.size = SZ_4M,
|
|
.mask_flags = 0,
|
|
},
|
|
/* file system */
|
|
{
|
|
.name = "filesystem",
|
|
.offset = MTDPART_OFS_NXTBLK,
|
|
.size = MTDPART_SIZ_FULL,
|
|
.mask_flags = 0,
|
|
}
|
|
};
|
|
|
|
static struct davinci_nand_pdata nand_config = {
|
|
.mask_cle = 0x4000,
|
|
.mask_ale = 0x2000,
|
|
.parts = nand_partitions,
|
|
.nr_parts = ARRAY_SIZE(nand_partitions),
|
|
.ecc_mode = NAND_ECC_HW,
|
|
.options = NAND_USE_FLASH_BBT,
|
|
.ecc_bits = 1,
|
|
};
|
|
|
|
static struct davinci_uart_config serial_config __initconst = {
|
|
.enabled_uarts = BIT(1),
|
|
};
|
|
|
|
static struct tnetv107x_device_info evm_device_info __initconst = {
|
|
.serial_config = &serial_config,
|
|
.mmc_config[1] = &mmc_config, /* controller 1 */
|
|
.nand_config[0] = &nand_config, /* chip select 0 */
|
|
};
|
|
|
|
static __init void tnetv107x_evm_board_init(void)
|
|
{
|
|
davinci_cfg_reg_list(sdio1_pins);
|
|
davinci_cfg_reg_list(uart1_pins);
|
|
|
|
tnetv107x_devices_init(&evm_device_info);
|
|
}
|
|
|
|
#ifdef CONFIG_SERIAL_8250_CONSOLE
|
|
static int __init tnetv107x_evm_console_init(void)
|
|
{
|
|
return add_preferred_console("ttyS", 0, "115200");
|
|
}
|
|
console_initcall(tnetv107x_evm_console_init);
|
|
#endif
|
|
|
|
MACHINE_START(TNETV107X, "TNETV107X EVM")
|
|
.phys_io = TNETV107X_IO_BASE,
|
|
.io_pg_offst = (TNETV107X_IO_VIRT >> 18) & 0xfffc,
|
|
.boot_params = (TNETV107X_DDR_BASE + 0x100),
|
|
.map_io = tnetv107x_init,
|
|
.init_irq = cp_intc_init,
|
|
.timer = &davinci_timer,
|
|
.init_machine = tnetv107x_evm_board_init,
|
|
MACHINE_END
|