/* * Copyright (C) 2010 Linaro Limited * * based on code from the following * Copyright 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved. * Copyright 2009-2010 Pegatron Corporation. All Rights Reserved. * Copyright 2009-2010 Genesi USA, Inc. All Rights Reserved. * * The code contained herein is licensed under the GNU General Public * License. You may obtain a copy of the GNU General Public License * Version 2 or later at the following locations: * * http://www.opensource.org/licenses/gpl-license.html * http://www.gnu.org/copyleft/gpl.html */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "devices-imx51.h" #include "devices.h" #define MX51_USB_PLL_DIV_24_MHZ 0x01 #define EFIKAMX_PCBID0 IMX_GPIO_NR(3, 16) #define EFIKAMX_PCBID1 IMX_GPIO_NR(3, 17) #define EFIKAMX_PCBID2 IMX_GPIO_NR(3, 11) #define EFIKAMX_BLUE_LED IMX_GPIO_NR(3, 13) #define EFIKAMX_GREEN_LED IMX_GPIO_NR(3, 14) #define EFIKAMX_RED_LED IMX_GPIO_NR(3, 15) #define EFIKAMX_POWER_KEY IMX_GPIO_NR(2, 31) #define EFIKAMX_SPI_CS0 IMX_GPIO_NR(4, 24) #define EFIKAMX_SPI_CS1 IMX_GPIO_NR(4, 25) /* board 1.1 doesn't have same reset gpio */ #define EFIKAMX_RESET1_1 IMX_GPIO_NR(3, 2) #define EFIKAMX_RESET IMX_GPIO_NR(1, 4) /* the pci ids pin have pull up. they're driven low according to board id */ #define MX51_PAD_PCBID0 IOMUX_PAD(0x518, 0x130, 3, 0x0, 0, PAD_CTL_PUS_100K_UP) #define MX51_PAD_PCBID1 IOMUX_PAD(0x51C, 0x134, 3, 0x0, 0, PAD_CTL_PUS_100K_UP) #define MX51_PAD_PCBID2 IOMUX_PAD(0x504, 0x128, 3, 0x0, 0, PAD_CTL_PUS_100K_UP) #define MX51_PAD_PWRKEY IOMUX_PAD(0x48c, 0x0f8, 1, 0x0, 0, PAD_CTL_PUS_100K_UP | PAD_CTL_PKE) static iomux_v3_cfg_t mx51efikamx_pads[] = { /* UART1 */ MX51_PAD_UART1_RXD__UART1_RXD, MX51_PAD_UART1_TXD__UART1_TXD, MX51_PAD_UART1_RTS__UART1_RTS, MX51_PAD_UART1_CTS__UART1_CTS, /* board id */ MX51_PAD_PCBID0, MX51_PAD_PCBID1, MX51_PAD_PCBID2, /* SD 1 */ MX51_PAD_SD1_CMD__SD1_CMD, MX51_PAD_SD1_CLK__SD1_CLK, MX51_PAD_SD1_DATA0__SD1_DATA0, MX51_PAD_SD1_DATA1__SD1_DATA1, MX51_PAD_SD1_DATA2__SD1_DATA2, MX51_PAD_SD1_DATA3__SD1_DATA3, /* SD 2 */ MX51_PAD_SD2_CMD__SD2_CMD, MX51_PAD_SD2_CLK__SD2_CLK, MX51_PAD_SD2_DATA0__SD2_DATA0, MX51_PAD_SD2_DATA1__SD2_DATA1, MX51_PAD_SD2_DATA2__SD2_DATA2, MX51_PAD_SD2_DATA3__SD2_DATA3, /* SD/MMC WP/CD */ MX51_PAD_GPIO1_0__SD1_CD, MX51_PAD_GPIO1_1__SD1_WP, MX51_PAD_GPIO1_7__SD2_WP, MX51_PAD_GPIO1_8__SD2_CD, /* leds */ MX51_PAD_CSI1_D9__GPIO3_13, MX51_PAD_CSI1_VSYNC__GPIO3_14, MX51_PAD_CSI1_HSYNC__GPIO3_15, /* power key */ MX51_PAD_PWRKEY, /* spi */ MX51_PAD_CSPI1_MOSI__ECSPI1_MOSI, MX51_PAD_CSPI1_MISO__ECSPI1_MISO, MX51_PAD_CSPI1_SS0__GPIO4_24, MX51_PAD_CSPI1_SS1__GPIO4_25, MX51_PAD_CSPI1_RDY__ECSPI1_RDY, MX51_PAD_CSPI1_SCLK__ECSPI1_SCLK, /* reset */ MX51_PAD_DI1_PIN13__GPIO3_2, MX51_PAD_GPIO1_4__GPIO1_4, }; /* Serial ports */ static const struct imxuart_platform_data uart_pdata = { .flags = IMXUART_HAVE_RTSCTS, }; /* This function is board specific as the bit mask for the plldiv will also * be different for other Freescale SoCs, thus a common bitmask is not * possible and cannot get place in /plat-mxc/ehci.c. */ static int initialize_otg_port(struct platform_device *pdev) { u32 v; void __iomem *usb_base; void __iomem *usbother_base; usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K); if (!usb_base) return -ENOMEM; usbother_base = (void __iomem *)(usb_base + MX5_USBOTHER_REGS_OFFSET); /* Set the PHY clock to 19.2MHz */ v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET); v &= ~MX5_USB_UTMI_PHYCTRL1_PLLDIV_MASK; v |= MX51_USB_PLL_DIV_24_MHZ; __raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET); iounmap(usb_base); return 0; } static struct mxc_usbh_platform_data dr_utmi_config = { .init = initialize_otg_port, .portsc = MXC_EHCI_UTMI_16BIT, .flags = MXC_EHCI_INTERNAL_PHY, }; /* PCBID2 PCBID1 PCBID0 STATE 1 1 1 ER1:rev1.1 1 1 0 ER2:rev1.2 1 0 1 ER3:rev1.3 1 0 0 ER4:rev1.4 */ static void __init mx51_efikamx_board_id(void) { int id; /* things are taking time to settle */ msleep(150); gpio_request(EFIKAMX_PCBID0, "pcbid0"); gpio_direction_input(EFIKAMX_PCBID0); gpio_request(EFIKAMX_PCBID1, "pcbid1"); gpio_direction_input(EFIKAMX_PCBID1); gpio_request(EFIKAMX_PCBID2, "pcbid2"); gpio_direction_input(EFIKAMX_PCBID2); id = gpio_get_value(EFIKAMX_PCBID0); id |= gpio_get_value(EFIKAMX_PCBID1) << 1; id |= gpio_get_value(EFIKAMX_PCBID2) << 2; switch (id) { case 7: system_rev = 0x11; break; case 6: system_rev = 0x12; break; case 5: system_rev = 0x13; break; case 4: system_rev = 0x14; break; default: system_rev = 0x10; break; } if ((system_rev == 0x10) || (system_rev == 0x12) || (system_rev == 0x14)) { printk(KERN_WARNING "EfikaMX: Unsupported board revision 1.%u!\n", system_rev & 0xf); } } static struct gpio_led mx51_efikamx_leds[] = { { .name = "efikamx:green", .default_trigger = "default-on", .gpio = EFIKAMX_GREEN_LED, }, { .name = "efikamx:red", .default_trigger = "ide-disk", .gpio = EFIKAMX_RED_LED, }, { .name = "efikamx:blue", .default_trigger = "mmc0", .gpio = EFIKAMX_BLUE_LED, }, }; static struct gpio_led_platform_data mx51_efikamx_leds_data = { .leds = mx51_efikamx_leds, .num_leds = ARRAY_SIZE(mx51_efikamx_leds), }; static struct platform_device mx51_efikamx_leds_device = { .name = "leds-gpio", .id = -1, .dev = { .platform_data = &mx51_efikamx_leds_data, }, }; static struct gpio_keys_button mx51_efikamx_powerkey[] = { { .code = KEY_POWER, .gpio = EFIKAMX_POWER_KEY, .type = EV_PWR, .desc = "Power Button (CM)", .wakeup = 1, .debounce_interval = 10, /* ms */ }, }; static const struct gpio_keys_platform_data mx51_efikamx_powerkey_data __initconst = { .buttons = mx51_efikamx_powerkey, .nbuttons = ARRAY_SIZE(mx51_efikamx_powerkey), }; static struct mtd_partition mx51_efikamx_spi_nor_partitions[] = { { .name = "u-boot", .offset = 0, .size = SZ_256K, }, { .name = "config", .offset = MTDPART_OFS_APPEND, .size = SZ_64K, }, }; static struct flash_platform_data mx51_efikamx_spi_flash_data = { .name = "spi_flash", .parts = mx51_efikamx_spi_nor_partitions, .nr_parts = ARRAY_SIZE(mx51_efikamx_spi_nor_partitions), .type = "sst25vf032b", }; static struct spi_board_info mx51_efikamx_spi_board_info[] __initdata = { { .modalias = "m25p80", .max_speed_hz = 25000000, .bus_num = 0, .chip_select = 1, .platform_data = &mx51_efikamx_spi_flash_data, .irq = -1, }, }; static int mx51_efikamx_spi_cs[] = { EFIKAMX_SPI_CS0, EFIKAMX_SPI_CS1, }; static const struct spi_imx_master mx51_efikamx_spi_pdata __initconst = { .chipselect = mx51_efikamx_spi_cs, .num_chipselect = ARRAY_SIZE(mx51_efikamx_spi_cs), }; void mx51_efikamx_reset(void) { if (system_rev == 0x11) gpio_direction_output(EFIKAMX_RESET1_1, 0); else gpio_direction_output(EFIKAMX_RESET, 0); } static void __init mxc_board_init(void) { mxc_iomux_v3_setup_multiple_pads(mx51efikamx_pads, ARRAY_SIZE(mx51efikamx_pads)); mx51_efikamx_board_id(); mxc_register_device(&mxc_usbdr_host_device, &dr_utmi_config); imx51_add_imx_uart(0, &uart_pdata); imx51_add_imx_uart(1, &uart_pdata); imx51_add_imx_uart(2, &uart_pdata); imx51_add_sdhci_esdhc_imx(0, NULL); /* on < 1.2 boards both SD controllers are used */ if (system_rev < 0x12) { imx51_add_sdhci_esdhc_imx(1, NULL); mx51_efikamx_leds[2].default_trigger = "mmc1"; } platform_device_register(&mx51_efikamx_leds_device); imx51_add_gpio_keys(&mx51_efikamx_powerkey_data); spi_register_board_info(mx51_efikamx_spi_board_info, ARRAY_SIZE(mx51_efikamx_spi_board_info)); imx51_add_ecspi(0, &mx51_efikamx_spi_pdata); if (system_rev == 0x11) { gpio_request(EFIKAMX_RESET1_1, "reset"); gpio_direction_output(EFIKAMX_RESET1_1, 1); } else { gpio_request(EFIKAMX_RESET, "reset"); gpio_direction_output(EFIKAMX_RESET, 1); } } static void __init mx51_efikamx_timer_init(void) { mx51_clocks_init(32768, 24000000, 22579200, 24576000); } static struct sys_timer mxc_timer = { .init = mx51_efikamx_timer_init, }; MACHINE_START(MX51_EFIKAMX, "Genesi EfikaMX nettop") /* Maintainer: Amit Kucheria */ .boot_params = MX51_PHYS_OFFSET + 0x100, .map_io = mx51_map_io, .init_irq = mx51_init_irq, .init_machine = mxc_board_init, .timer = &mxc_timer, MACHINE_END