/*
* Critical Link MityOMAP-L138 SoM
*
* Copyright (C) 2010 Critical Link LLC - http://www.criticallink.com
*
* 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/console.h>
#include <linux/platform_device.h>
#include <linux/mtd/partitions.h>
#include <linux/regulator/machine.h>
#include <linux/i2c.h>
#include <linux/i2c/at24.h>
#include <linux/etherdevice.h>
#include <linux/spi/spi.h>
#include <linux/spi/flash.h>
#include <asm/io.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <mach/common.h>
#include <mach/cp_intc.h>
#include <mach/da8xx.h>
#include <linux/platform_data/mtd-davinci.h>
#include <mach/mux.h>
#include <linux/platform_data/spi-davinci.h>
#define MITYOMAPL138_PHY_ID ""
#define FACTORY_CONFIG_MAGIC 0x012C0138
#define FACTORY_CONFIG_VERSION 0x00010001
/* Data Held in On-Board I2C device */
struct factory_config {
u32 magic;
u32 version;
u8 mac[6];
u32 fpga_type;
u32 spare;
u32 serialnumber;
char partnum[32];
};
static struct factory_config factory_config;
struct part_no_info {
const char *part_no; /* part number string of interest */
int max_freq; /* khz */
};
static struct part_no_info mityomapl138_pn_info[] = {
{
.part_no = "L138-C",
.max_freq = 300000,
},
{
.part_no = "L138-D",
.max_freq = 375000,
},
{
.part_no = "L138-F",
.max_freq = 456000,
},
{
.part_no = "1808-C",
.max_freq = 300000,
},
{
.part_no = "1808-D",
.max_freq = 375000,
},
{
.part_no = "1808-F",
.max_freq = 456000,
},
{
.part_no = "1810-D",
.max_freq = 375000,
},
};
#ifdef CONFIG_CPU_FREQ
static void mityomapl138_cpufreq_init(const char *partnum)
{
int i, ret;
for (i = 0; partnum && i < ARRAY_SIZE(mityomapl138_pn_info); i++) {
/*
* the part number has additional characters beyond what is
* stored in the table. This information is not needed for
* determining the speed grade, and would require several
* more table entries. Only check the first N characters
* for a match.
*/
if (!strncmp(partnum, mityomapl138_pn_info[i].part_no,
strlen(mityomapl138_pn_info[i].part_no))) {
da850_max_speed = mityomapl138_pn_info[i].max_freq;
break;
}
}
ret = da850_register_cpufreq("pll0_sysclk3");
if (ret)
pr_warning("cpufreq registration failed: %d\n", ret);
}
#else
static void mityomapl138_cpufreq_init(const char *partnum) { }
#endif
static void read_factory_config(struct memory_accessor *a, void *context)
{
int ret;
const char *partnum = NULL;
struct davinci_soc_info *soc_info = &davinci_soc_info;
ret = a->read(a, (char *)&factory_config, 0, sizeof(factory_config));
if (ret != sizeof(struct factory_config)) {
pr_warning("MityOMAPL138: Read Factory Config Failed: %d\n",
ret);
goto bad_config;
}
if (factory_config.magic != FACTORY_CONFIG_MAGIC) {
pr_warning("MityOMAPL138: Factory Config Magic Wrong (%X)\n",
factory_config.magic);
goto bad_config;
}
if (factory_config.version != FACTORY_CONFIG_VERSION) {
pr_warning("MityOMAPL138: Factory Config Version Wrong (%X)\n",
factory_config.version);
goto bad_config;
}
pr_info("MityOMAPL138: Found MAC = %pM\n", factory_config.mac);
if (is_valid_ether_addr(factory_config.mac))
memcpy(soc_info->emac_pdata->mac_addr,
factory_config.mac, ETH_ALEN);
else
pr_warning("MityOMAPL138: Invalid MAC found "
"in factory config block\n");
partnum = factory_config.partnum;
pr_info("MityOMAPL138: Part Number = %s\n", partnum);
bad_config:
/* default maximum speed is valid for all platforms */
mityomapl138_cpufreq_init(partnum);
}
static struct at24_platform_data mityomapl138_fd_chip = {
.byte_len = 256,
.page_size = 8,
.flags = AT24_FLAG_READONLY | AT24_FLAG_IRUGO,
.setup = read_factory_config,
.context = NULL,
};
static struct davinci_i2c_platform_data mityomap_i2c_0_pdata = {
.bus_freq = 100, /* kHz */
.bus_delay = 0, /* usec */
};
/* TPS65023 voltage regulator support */
/* 1.2V Core */
static struct regulator_consumer_supply tps65023_dcdc1_consumers[] = {
{
.supply = "cvdd",
},
};
/* 1.8V */
static struct regulator_consumer_supply tps65023_dcdc2_consumers[] = {
{
.supply = "usb0_vdda18",
},
{
.supply = "usb1_vdda18",
},
{
.supply = "ddr_dvdd18",
},
{
.supply = "sata_vddr",
},
};
/* 1.2V */
static struct regulator_consumer_supply tps65023_dcdc3_consumers[] = {
{
.supply = "sata_vdd",
},
{
.supply = "usb_cvdd",
},
{
.supply = "pll0_vdda",
},
{
.supply = "pll1_vdda",
},
};
/* 1.8V Aux LDO, not used */
static struct regulator_consumer_supply tps65023_ldo1_consumers[] = {
{
.supply = "1.8v_aux",
},
};
/* FPGA VCC Aux (2.5 or 3.3) LDO */
static struct regulator_consumer_supply tps65023_ldo2_consumers[] = {
{
.supply = "vccaux",
},
};
static struct regulator_init_data tps65023_regulator_data[] = {
/* dcdc1 */
{
.constraints = {
.min_uV = 1150000,
.max_uV = 1350000,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
REGULATOR_CHANGE_STATUS,
.boot_on = 1,
},
.num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc1_consumers),
.consumer_supplies = tps65023_dcdc1_consumers,
},
/* dcdc2 */
{
.constraints = {
.min_uV = 1800000,
.max_uV = 1800000,
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
.boot_on = 1,
},
.num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc2_consumers),
.consumer_supplies = tps65023_dcdc2_consumers,
},
/* dcdc3 */
{
.constraints = {
.min_uV = 1200000,
.max_uV = 1200000,
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
.boot_on = 1,
},
.num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc3_consumers),
.consumer_supplies = tps65023_dcdc3_consumers,
},
/* ldo1 */
{
.constraints = {
.min_uV = 1800000,
.max_uV = 1800000,
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
.boot_on = 1,
},
.num_consumer_supplies = ARRAY_SIZE(tps65023_ldo1_consumers),
.consumer_supplies = tps65023_ldo1_consumers,
},
/* ldo2 */
{
.constraints = {
.min_uV = 2500000,
.max_uV = 3300000,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
REGULATOR_CHANGE_STATUS,
.boot_on = 1,
},
.num_consumer_supplies = ARRAY_SIZE(tps65023_ldo2_consumers),
.consumer_supplies = tps65023_ldo2_consumers,
},
};
static struct i2c_board_info __initdata mityomap_tps65023_info[] = {
{
I2C_BOARD_INFO("tps65023", 0x48),
.platform_data = &tps65023_regulator_data[0],
},
{
I2C_BOARD_INFO("24c02", 0x50),
.platform_data = &mityomapl138_fd_chip,
},
};
static int __init pmic_tps65023_init(void)
{
return i2c_register_board_info(1, mityomap_tps65023_info,
ARRAY_SIZE(mityomap_tps65023_info));
}
/*
* SPI Devices:
* SPI1_CS0: 8M Flash ST-M25P64-VME6G
*/
static struct mtd_partition spi_flash_partitions[] = {
[0] = {
.name = "ubl",
.offset = 0,
.size = SZ_64K,
.mask_flags = MTD_WRITEABLE,
},
[1] = {
.name = "u-boot",
.offset = MTDPART_OFS_APPEND,
.size = SZ_512K,
.mask_flags = MTD_WRITEABLE,
},
[2] = {
.name = "u-boot-env",
.offset = MTDPART_OFS_APPEND,
.size = SZ_64K,
.mask_flags = MTD_WRITEABLE,
},
[3] = {
.name = "periph-config",
.offset = MTDPART_OFS_APPEND,
.size = SZ_64K,
.mask_flags = MTD_WRITEABLE,
},
[4] = {
.name = "reserved",
.offset = MTDPART_OFS_APPEND,
.size = SZ_256K + SZ_64K,
},
[5] = {
.name = "kernel",
.offset = MTDPART_OFS_APPEND,
.size = SZ_2M + SZ_1M,
},
[6] = {
.name = "fpga",
.offset = MTDPART_OFS_APPEND,
.size = SZ_2M,
},
[7] = {
.name = "spare",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
},
};
static struct flash_platform_data mityomapl138_spi_flash_data = {
.name = "m25p80",
.parts = spi_flash_partitions,
.nr_parts = ARRAY_SIZE(spi_flash_partitions),
.type = "m24p64",
};
static struct davinci_spi_config spi_eprom_config = {
.io_type = SPI_IO_TYPE_DMA,
.c2tdelay = 8,
.t2cdelay = 8,
};
static struct spi_board_info mityomapl138_spi_flash_info[] = {
{
.modalias = "m25p80",
.platform_data = &mityomapl138_spi_flash_data,
.controller_data = &spi_eprom_config,
.mode = SPI_MODE_0,
.max_speed_hz = 30000000,
.bus_num = 1,
.chip_select = 0,
},
};
/*
* MityDSP-L138 includes a 256 MByte large-page NAND flash
* (128K blocks).
*/
static struct mtd_partition mityomapl138_nandflash_partition[] = {
{
.name = "rootfs",
.offset = 0,
.size = SZ_128M,
.mask_flags = 0, /* MTD_WRITEABLE, */
},
{
.name = "homefs",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
.mask_flags = 0,
},
};
static struct davinci_nand_pdata mityomapl138_nandflash_data = {
.parts = mityomapl138_nandflash_partition,
.nr_parts = ARRAY_SIZE(mityomapl138_nandflash_partition),
.ecc_mode = NAND_ECC_HW,
.bbt_options = NAND_BBT_USE_FLASH,
.options = NAND_BUSWIDTH_16,
.ecc_bits = 1, /* 4 bit mode is not supported with 16 bit NAND */
};
static struct resource mityomapl138_nandflash_resource[] = {
{
.start = DA8XX_AEMIF_CS3_BASE,
.end = DA8XX_AEMIF_CS3_BASE + SZ_512K + 2 * SZ_1K - 1,
.flags = IORESOURCE_MEM,
},
{
.start = DA8XX_AEMIF_CTL_BASE,
.end = DA8XX_AEMIF_CTL_BASE + SZ_32K - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device mityomapl138_nandflash_device = {
.name = "davinci_nand",
.id = 1,
.dev = {
.platform_data = &mityomapl138_nandflash_data,
},
.num_resources = ARRAY_SIZE(mityomapl138_nandflash_resource),
.resource = mityomapl138_nandflash_resource,
};
static struct platform_device *mityomapl138_devices[] __initdata = {
&mityomapl138_nandflash_device,
};
static void __init mityomapl138_setup_nand(void)
{
platform_add_devices(mityomapl138_devices,
ARRAY_SIZE(mityomapl138_devices));
}
static struct davinci_uart_config mityomapl138_uart_config __initdata = {
.enabled_uarts = 0x7,
};
static const short mityomap_mii_pins[] = {
DA850_MII_TXEN, DA850_MII_TXCLK, DA850_MII_COL, DA850_MII_TXD_3,
DA850_MII_TXD_2, DA850_MII_TXD_1, DA850_MII_TXD_0, DA850_MII_RXER,
DA850_MII_CRS, DA850_MII_RXCLK, DA850_MII_RXDV, DA850_MII_RXD_3,
DA850_MII_RXD_2, DA850_MII_RXD_1, DA850_MII_RXD_0, DA850_MDIO_CLK,
DA850_MDIO_D,
-1
};
static const short mityomap_rmii_pins[] = {
DA850_RMII_TXD_0, DA850_RMII_TXD_1, DA850_RMII_TXEN,
DA850_RMII_CRS_DV, DA850_RMII_RXD_0, DA850_RMII_RXD_1,
DA850_RMII_RXER, DA850_RMII_MHZ_50_CLK, DA850_MDIO_CLK,
DA850_MDIO_D,
-1
};
static void __init mityomapl138_config_emac(void)
{
void __iomem *cfg_chip3_base;
int ret;
u32 val;
struct davinci_soc_info *soc_info = &davinci_soc_info;
soc_info->emac_pdata->rmii_en = 0; /* hardcoded for now */
cfg_chip3_base = DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG);
val = __raw_readl(cfg_chip3_base);
if (soc_info->emac_pdata->rmii_en) {
val |= BIT(8);
ret = davinci_cfg_reg_list(mityomap_rmii_pins);
pr_info("RMII PHY configured\n");
} else {
val &= ~BIT(8);
ret = davinci_cfg_reg_list(mityomap_mii_pins);
pr_info("MII PHY configured\n");
}
if (ret) {
pr_warning("mii/rmii mux setup failed: %d\n", ret);
return;
}
/* configure the CFGCHIP3 register for RMII or MII */
__raw_writel(val, cfg_chip3_base);
soc_info->emac_pdata->phy_id = MITYOMAPL138_PHY_ID;
ret = da8xx_register_emac();
if (ret)
pr_warning("emac registration failed: %d\n", ret);
}
static struct davinci_pm_config da850_pm_pdata = {
.sleepcount = 128,
};
static struct platform_device da850_pm_device = {
.name = "pm-davinci",
.dev = {
.platform_data = &da850_pm_pdata,
},
.id = -1,
};
static void __init mityomapl138_init(void)
{
int ret;
/* for now, no special EDMA channels are reserved */
ret = da850_register_edma(NULL);
if (ret)
pr_warning("edma registration failed: %d\n", ret);
ret = da8xx_register_watchdog();
if (ret)
pr_warning("watchdog registration failed: %d\n", ret);
davinci_serial_init(&mityomapl138_uart_config);
ret = da8xx_register_i2c(0, &mityomap_i2c_0_pdata);
if (ret)
pr_warning("i2c0 registration failed: %d\n", ret);
ret = pmic_tps65023_init();
if (ret)
pr_warning("TPS65023 PMIC init failed: %d\n", ret);
mityomapl138_setup_nand();
ret = spi_register_board_info(mityomapl138_spi_flash_info,
ARRAY_SIZE(mityomapl138_spi_flash_info));
if (ret)
pr_warn("spi info registration failed: %d\n", ret);
ret = da8xx_register_spi_bus(1,
ARRAY_SIZE(mityomapl138_spi_flash_info));
if (ret)
pr_warning("spi 1 registration failed: %d\n", ret);
mityomapl138_config_emac();
ret = da8xx_register_rtc();
if (ret)
pr_warning("rtc setup failed: %d\n", ret);
ret = da8xx_register_cpuidle();
if (ret)
pr_warning("cpuidle registration failed: %d\n", ret);
ret = da850_register_pm(&da850_pm_device);
if (ret)
pr_warning("da850_evm_init: suspend registration failed: %d\n",
ret);
}
#ifdef CONFIG_SERIAL_8250_CONSOLE
static int __init mityomapl138_console_init(void)
{
if (!machine_is_mityomapl138())
return 0;
return add_preferred_console("ttyS", 1, "115200");
}
console_initcall(mityomapl138_console_init);
#endif
static void __init mityomapl138_map_io(void)
{
da850_init();
}
MACHINE_START(MITYOMAPL138, "MityDSP-L138/MityARM-1808")
.atag_offset = 0x100,
.map_io = mityomapl138_map_io,
.init_irq = cp_intc_init,
.init_time = davinci_timer_init,
.init_machine = mityomapl138_init,
.init_late = davinci_init_late,
.dma_zone_size = SZ_128M,
.restart = da8xx_restart,
MACHINE_END