/* * TI DaVinci EVM board support * * Author: Kevin Hilman, MontaVista Software, Inc. * * 2007 (c) MontaVista Software, Inc. 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define DM644X_EVM_PHY_MASK (0x2) #define DM644X_EVM_MDIO_FREQUENCY (2200000) /* PHY bus frequency */ #define DAVINCI_CFC_ATA_BASE 0x01C66000 #define DAVINCI_ASYNC_EMIF_CONTROL_BASE 0x01e00000 #define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE 0x02000000 #define DAVINCI_ASYNC_EMIF_DATA_CE1_BASE 0x04000000 #define DAVINCI_ASYNC_EMIF_DATA_CE2_BASE 0x06000000 #define DAVINCI_ASYNC_EMIF_DATA_CE3_BASE 0x08000000 #define LXT971_PHY_ID (0x001378e2) #define LXT971_PHY_MASK (0xfffffff0) static struct mtd_partition davinci_evm_norflash_partitions[] = { /* bootloader (UBL, U-Boot, etc) in first 5 sectors */ { .name = "bootloader", .offset = 0, .size = 5 * SZ_64K, .mask_flags = MTD_WRITEABLE, /* force read-only */ }, /* bootloader params in the next 1 sectors */ { .name = "params", .offset = MTDPART_OFS_APPEND, .size = SZ_64K, .mask_flags = 0, }, /* kernel */ { .name = "kernel", .offset = MTDPART_OFS_APPEND, .size = SZ_2M, .mask_flags = 0 }, /* file system */ { .name = "filesystem", .offset = MTDPART_OFS_APPEND, .size = MTDPART_SIZ_FULL, .mask_flags = 0 } }; static struct physmap_flash_data davinci_evm_norflash_data = { .width = 2, .parts = davinci_evm_norflash_partitions, .nr_parts = ARRAY_SIZE(davinci_evm_norflash_partitions), }; /* NOTE: CFI probe will correctly detect flash part as 32M, but EMIF * limits addresses to 16M, so using addresses past 16M will wrap */ static struct resource davinci_evm_norflash_resource = { .start = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE, .end = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_16M - 1, .flags = IORESOURCE_MEM, }; static struct platform_device davinci_evm_norflash_device = { .name = "physmap-flash", .id = 0, .dev = { .platform_data = &davinci_evm_norflash_data, }, .num_resources = 1, .resource = &davinci_evm_norflash_resource, }; /* DM644x EVM includes a 64 MByte small-page NAND flash (16K blocks). * It may used instead of the (default) NOR chip to boot, using TI's * tools to install the secondary boot loader (UBL) and U-Boot. */ struct mtd_partition davinci_evm_nandflash_partition[] = { /* Bootloader layout depends on whose u-boot is installed, but we * can hide all the details. * - block 0 for u-boot environment ... in mainline u-boot * - block 1 for UBL (plus up to four backup copies in blocks 2..5) * - blocks 6...? for u-boot * - blocks 16..23 for u-boot environment ... in TI's u-boot */ { .name = "bootloader", .offset = 0, .size = SZ_256K + SZ_128K, .mask_flags = MTD_WRITEABLE, /* force read-only */ }, /* Kernel */ { .name = "kernel", .offset = MTDPART_OFS_APPEND, .size = SZ_4M, .mask_flags = 0, }, /* File system (older GIT kernels started this on the 5MB mark) */ { .name = "filesystem", .offset = MTDPART_OFS_APPEND, .size = MTDPART_SIZ_FULL, .mask_flags = 0, } /* A few blocks at end hold a flash BBT ... created by TI's CCS * using flashwriter_nand.out, but ignored by TI's versions of * Linux and u-boot. We boot faster by using them. */ }; static struct davinci_nand_pdata davinci_evm_nandflash_data = { .parts = davinci_evm_nandflash_partition, .nr_parts = ARRAY_SIZE(davinci_evm_nandflash_partition), .ecc_mode = NAND_ECC_HW, .options = NAND_USE_FLASH_BBT, }; static struct resource davinci_evm_nandflash_resource[] = { { .start = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE, .end = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_16M - 1, .flags = IORESOURCE_MEM, }, { .start = DAVINCI_ASYNC_EMIF_CONTROL_BASE, .end = DAVINCI_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1, .flags = IORESOURCE_MEM, }, }; static struct platform_device davinci_evm_nandflash_device = { .name = "davinci_nand", .id = 0, .dev = { .platform_data = &davinci_evm_nandflash_data, }, .num_resources = ARRAY_SIZE(davinci_evm_nandflash_resource), .resource = davinci_evm_nandflash_resource, }; static u64 davinci_fb_dma_mask = DMA_BIT_MASK(32); static struct platform_device davinci_fb_device = { .name = "davincifb", .id = -1, .dev = { .dma_mask = &davinci_fb_dma_mask, .coherent_dma_mask = DMA_BIT_MASK(32), }, .num_resources = 0, }; static struct platform_device rtc_dev = { .name = "rtc_davinci_evm", .id = -1, }; static struct resource ide_resources[] = { { .start = DAVINCI_CFC_ATA_BASE, .end = DAVINCI_CFC_ATA_BASE + 0x7ff, .flags = IORESOURCE_MEM, }, { .start = IRQ_IDE, .end = IRQ_IDE, .flags = IORESOURCE_IRQ, }, }; static u64 ide_dma_mask = DMA_BIT_MASK(32); static struct platform_device ide_dev = { .name = "palm_bk3710", .id = -1, .resource = ide_resources, .num_resources = ARRAY_SIZE(ide_resources), .dev = { .dma_mask = &ide_dma_mask, .coherent_dma_mask = DMA_BIT_MASK(32), }, }; /*----------------------------------------------------------------------*/ /* * I2C GPIO expanders */ #define PCF_Uxx_BASE(x) (DAVINCI_N_GPIO + ((x) * 8)) /* U2 -- LEDs */ static struct gpio_led evm_leds[] = { { .name = "DS8", .active_low = 1, .default_trigger = "heartbeat", }, { .name = "DS7", .active_low = 1, }, { .name = "DS6", .active_low = 1, }, { .name = "DS5", .active_low = 1, }, { .name = "DS4", .active_low = 1, }, { .name = "DS3", .active_low = 1, }, { .name = "DS2", .active_low = 1, .default_trigger = "mmc0", }, { .name = "DS1", .active_low = 1, .default_trigger = "ide-disk", }, }; static const struct gpio_led_platform_data evm_led_data = { .num_leds = ARRAY_SIZE(evm_leds), .leds = evm_leds, }; static struct platform_device *evm_led_dev; static int evm_led_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c) { struct gpio_led *leds = evm_leds; int status; while (ngpio--) { leds->gpio = gpio++; leds++; } /* what an extremely annoying way to be forced to handle * device unregistration ... */ evm_led_dev = platform_device_alloc("leds-gpio", 0); platform_device_add_data(evm_led_dev, &evm_led_data, sizeof evm_led_data); evm_led_dev->dev.parent = &client->dev; status = platform_device_add(evm_led_dev); if (status < 0) { platform_device_put(evm_led_dev); evm_led_dev = NULL; } return status; } static int evm_led_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c) { if (evm_led_dev) { platform_device_unregister(evm_led_dev); evm_led_dev = NULL; } return 0; } static struct pcf857x_platform_data pcf_data_u2 = { .gpio_base = PCF_Uxx_BASE(0), .setup = evm_led_setup, .teardown = evm_led_teardown, }; /* U18 - A/V clock generator and user switch */ static int sw_gpio; static ssize_t sw_show(struct device *d, struct device_attribute *a, char *buf) { char *s = gpio_get_value_cansleep(sw_gpio) ? "on\n" : "off\n"; strcpy(buf, s); return strlen(s); } static DEVICE_ATTR(user_sw, S_IRUGO, sw_show, NULL); static int evm_u18_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c) { int status; /* export dip switch option */ sw_gpio = gpio + 7; status = gpio_request(sw_gpio, "user_sw"); if (status == 0) status = gpio_direction_input(sw_gpio); if (status == 0) status = device_create_file(&client->dev, &dev_attr_user_sw); else gpio_free(sw_gpio); if (status != 0) sw_gpio = -EINVAL; /* audio PLL: 48 kHz (vs 44.1 or 32), single rate (vs double) */ gpio_request(gpio + 3, "pll_fs2"); gpio_direction_output(gpio + 3, 0); gpio_request(gpio + 2, "pll_fs1"); gpio_direction_output(gpio + 2, 0); gpio_request(gpio + 1, "pll_sr"); gpio_direction_output(gpio + 1, 0); return 0; } static int evm_u18_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c) { gpio_free(gpio + 1); gpio_free(gpio + 2); gpio_free(gpio + 3); if (sw_gpio > 0) { device_remove_file(&client->dev, &dev_attr_user_sw); gpio_free(sw_gpio); } return 0; } static struct pcf857x_platform_data pcf_data_u18 = { .gpio_base = PCF_Uxx_BASE(1), .n_latch = (1 << 3) | (1 << 2) | (1 << 1), .setup = evm_u18_setup, .teardown = evm_u18_teardown, }; /* U35 - various I/O signals used to manage USB, CF, ATA, etc */ static int evm_u35_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c) { /* p0 = nDRV_VBUS (initial: don't supply it) */ gpio_request(gpio + 0, "nDRV_VBUS"); gpio_direction_output(gpio + 0, 1); /* p1 = VDDIMX_EN */ gpio_request(gpio + 1, "VDDIMX_EN"); gpio_direction_output(gpio + 1, 1); /* p2 = VLYNQ_EN */ gpio_request(gpio + 2, "VLYNQ_EN"); gpio_direction_output(gpio + 2, 1); /* p3 = n3V3_CF_RESET (initial: stay in reset) */ gpio_request(gpio + 3, "nCF_RESET"); gpio_direction_output(gpio + 3, 0); /* (p4 unused) */ /* p5 = 1V8_WLAN_RESET (initial: stay in reset) */ gpio_request(gpio + 5, "WLAN_RESET"); gpio_direction_output(gpio + 5, 1); /* p6 = nATA_SEL (initial: select) */ gpio_request(gpio + 6, "nATA_SEL"); gpio_direction_output(gpio + 6, 0); /* p7 = nCF_SEL (initial: deselect) */ gpio_request(gpio + 7, "nCF_SEL"); gpio_direction_output(gpio + 7, 1); /* irlml6401 switches over 1A, in under 8 msec; * now it can be managed by nDRV_VBUS ... */ setup_usb(500, 8); return 0; } static int evm_u35_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c) { gpio_free(gpio + 7); gpio_free(gpio + 6); gpio_free(gpio + 5); gpio_free(gpio + 3); gpio_free(gpio + 2); gpio_free(gpio + 1); gpio_free(gpio + 0); return 0; } static struct pcf857x_platform_data pcf_data_u35 = { .gpio_base = PCF_Uxx_BASE(2), .setup = evm_u35_setup, .teardown = evm_u35_teardown, }; /*----------------------------------------------------------------------*/ /* Most of this EEPROM is unused, but U-Boot uses some data: * - 0x7f00, 6 bytes Ethernet Address * - 0x0039, 1 byte NTSC vs PAL (bit 0x80 == PAL) * - ... newer boards may have more */ static struct memory_accessor *at24_mem_acc; static void at24_setup(struct memory_accessor *mem_acc, void *context) { char mac_addr[ETH_ALEN]; struct davinci_soc_info *soc_info = &davinci_soc_info; at24_mem_acc = mem_acc; /* Read MAC addr from EEPROM */ if (at24_mem_acc->read(at24_mem_acc, mac_addr, 0x7f00, ETH_ALEN) == ETH_ALEN) { printk(KERN_INFO "Read MAC addr from EEPROM: %pM\n", mac_addr); memcpy(soc_info->emac_pdata->mac_addr, mac_addr, ETH_ALEN); } } static struct at24_platform_data eeprom_info = { .byte_len = (256*1024) / 8, .page_size = 64, .flags = AT24_FLAG_ADDR16, .setup = at24_setup, }; /* * MSP430 supports RTC, card detection, input from IR remote, and * a bit more. It triggers interrupts on GPIO(7) from pressing * buttons on the IR remote, and for card detect switches. */ static struct i2c_client *dm6446evm_msp; static int dm6446evm_msp_probe(struct i2c_client *client, const struct i2c_device_id *id) { dm6446evm_msp = client; return 0; } static int dm6446evm_msp_remove(struct i2c_client *client) { dm6446evm_msp = NULL; return 0; } static const struct i2c_device_id dm6446evm_msp_ids[] = { { "dm6446evm_msp", 0, }, { /* end of list */ }, }; static struct i2c_driver dm6446evm_msp_driver = { .driver.name = "dm6446evm_msp", .id_table = dm6446evm_msp_ids, .probe = dm6446evm_msp_probe, .remove = dm6446evm_msp_remove, }; static int dm6444evm_msp430_get_pins(void) { static const char txbuf[2] = { 2, 4, }; char buf[4]; struct i2c_msg msg[2] = { { .addr = dm6446evm_msp->addr, .flags = 0, .len = 2, .buf = (void __force *)txbuf, }, { .addr = dm6446evm_msp->addr, .flags = I2C_M_RD, .len = 4, .buf = buf, }, }; int status; if (!dm6446evm_msp) return -ENXIO; /* Command 4 == get input state, returns port 2 and port3 data * S Addr W [A] len=2 [A] cmd=4 [A] * RS Addr R [A] [len=4] A [cmd=4] A [port2] A [port3] N P */ status = i2c_transfer(dm6446evm_msp->adapter, msg, 2); if (status < 0) return status; dev_dbg(&dm6446evm_msp->dev, "PINS: %02x %02x %02x %02x\n", buf[0], buf[1], buf[2], buf[3]); return (buf[3] << 8) | buf[2]; } static int dm6444evm_mmc_get_cd(int module) { int status = dm6444evm_msp430_get_pins(); return (status < 0) ? status : !(status & BIT(1)); } static int dm6444evm_mmc_get_ro(int module) { int status = dm6444evm_msp430_get_pins(); return (status < 0) ? status : status & BIT(6 + 8); } static struct davinci_mmc_config dm6446evm_mmc_config = { .get_cd = dm6444evm_mmc_get_cd, .get_ro = dm6444evm_mmc_get_ro, .wires = 4, .version = MMC_CTLR_VERSION_1 }; static struct i2c_board_info __initdata i2c_info[] = { { I2C_BOARD_INFO("dm6446evm_msp", 0x23), }, { I2C_BOARD_INFO("pcf8574", 0x38), .platform_data = &pcf_data_u2, }, { I2C_BOARD_INFO("pcf8574", 0x39), .platform_data = &pcf_data_u18, }, { I2C_BOARD_INFO("pcf8574", 0x3a), .platform_data = &pcf_data_u35, }, { I2C_BOARD_INFO("24c256", 0x50), .platform_data = &eeprom_info, }, /* ALSO: * - tvl320aic33 audio codec (0x1b) * - tvp5146 video decoder (0x5d) */ }; /* The msp430 uses a slow bitbanged I2C implementation (ergo 20 KHz), * which requires 100 usec of idle bus after i2c writes sent to it. */ static struct davinci_i2c_platform_data i2c_pdata = { .bus_freq = 20 /* kHz */, .bus_delay = 100 /* usec */, }; static void __init evm_init_i2c(void) { davinci_init_i2c(&i2c_pdata); i2c_add_driver(&dm6446evm_msp_driver); i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info)); } static struct platform_device *davinci_evm_devices[] __initdata = { &davinci_fb_device, &rtc_dev, }; static struct davinci_uart_config uart_config __initdata = { .enabled_uarts = (1 << 0), }; static void __init davinci_evm_map_io(void) { dm644x_init(); } static int davinci_phy_fixup(struct phy_device *phydev) { unsigned int control; /* CRITICAL: Fix for increasing PHY signal drive strength for * TX lockup issue. On DaVinci EVM, the Intel LXT971 PHY * signal strength was low causing TX to fail randomly. The * fix is to Set bit 11 (Increased MII drive strength) of PHY * register 26 (Digital Config register) on this phy. */ control = phy_read(phydev, 26); phy_write(phydev, 26, (control | 0x800)); return 0; } #if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \ defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE) #define HAS_ATA 1 #else #define HAS_ATA 0 #endif #if defined(CONFIG_MTD_PHYSMAP) || \ defined(CONFIG_MTD_PHYSMAP_MODULE) #define HAS_NOR 1 #else #define HAS_NOR 0 #endif #if defined(CONFIG_MTD_NAND_DAVINCI) || \ defined(CONFIG_MTD_NAND_DAVINCI_MODULE) #define HAS_NAND 1 #else #define HAS_NAND 0 #endif static __init void davinci_evm_init(void) { struct clk *aemif_clk; struct davinci_soc_info *soc_info = &davinci_soc_info; aemif_clk = clk_get(NULL, "aemif"); clk_enable(aemif_clk); if (HAS_ATA) { if (HAS_NAND || HAS_NOR) pr_warning("WARNING: both IDE and Flash are " "enabled, but they share AEMIF pins.\n" "\tDisable IDE for NAND/NOR support.\n"); davinci_cfg_reg(DM644X_HPIEN_DISABLE); davinci_cfg_reg(DM644X_ATAEN); davinci_cfg_reg(DM644X_HDIREN); platform_device_register(&ide_dev); } else if (HAS_NAND || HAS_NOR) { davinci_cfg_reg(DM644X_HPIEN_DISABLE); davinci_cfg_reg(DM644X_ATAEN_DISABLE); /* only one device will be jumpered and detected */ if (HAS_NAND) { platform_device_register(&davinci_evm_nandflash_device); evm_leds[7].default_trigger = "nand-disk"; if (HAS_NOR) pr_warning("WARNING: both NAND and NOR flash " "are enabled; disable one of them.\n"); } else if (HAS_NOR) platform_device_register(&davinci_evm_norflash_device); } platform_add_devices(davinci_evm_devices, ARRAY_SIZE(davinci_evm_devices)); evm_init_i2c(); davinci_setup_mmc(0, &dm6446evm_mmc_config); davinci_serial_init(&uart_config); soc_info->emac_pdata->phy_mask = DM644X_EVM_PHY_MASK; soc_info->emac_pdata->mdio_max_freq = DM644X_EVM_MDIO_FREQUENCY; dm644x_init_emac(soc_info->emac_pdata); /* Register the fixup for PHY on DaVinci */ phy_register_fixup_for_uid(LXT971_PHY_ID, LXT971_PHY_MASK, davinci_phy_fixup); } static __init void davinci_evm_irq_init(void) { davinci_irq_init(); } MACHINE_START(DAVINCI_EVM, "DaVinci DM644x EVM") /* Maintainer: MontaVista Software */ .phys_io = IO_PHYS, .io_pg_offst = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc, .boot_params = (DAVINCI_DDR_BASE + 0x100), .map_io = davinci_evm_map_io, .init_irq = davinci_evm_irq_init, .timer = &davinci_timer, .init_machine = davinci_evm_init, MACHINE_END