From: Steve Sakoman steve@sakoman.com
This patch adds support for basic features: onenand, uarts, i2c, mmc, rtc, and usb --- arch/arm/mach-omap2/Kconfig | 4 + arch/arm/mach-omap2/Makefile | 4 + arch/arm/mach-omap2/board-overo.c | 234 +++++++++++++++++++++++++++++++++++++ 3 files changed, 242 insertions(+), 0 deletions(-) create mode 100644 arch/arm/mach-omap2/board-overo.c
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig index 365b982..362edfa 100644 --- a/arch/arm/mach-omap2/Kconfig +++ b/arch/arm/mach-omap2/Kconfig @@ -123,6 +123,10 @@ config MACH_OMAP3_BEAGLE bool "OMAP3 BEAGLE board" depends on ARCH_OMAP3 && ARCH_OMAP34XX
+config MACH_OVERO + bool "Gumstix Overo board" + depends on ARCH_OMAP3 && ARCH_OMAP34XX + config OMAP_TICK_GPTIMER int "GPTIMER used for system tick timer" depends on ARCH_OMAP2 || ARCH_OMAP3 diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index d89b7cb..1f6c704 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -75,6 +75,10 @@ obj-$(CONFIG_MACH_NOKIA_N800) += board-n800.o board-n800-flash.o \ board-n800-dsp.o \ board-n800-camera.o obj-$(CONFIG_MACH_NOKIA_N810) += board-n810.o +obj-$(CONFIG_MACH_OVERO) += board-overo.o \ + hsmmc.o \ + usb-musb.o \ + usb-ehci.o
# TUSB 6010 chips obj-$(CONFIG_MACH_OMAP2_TUSB6010) += usb-tusb6010.o diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c new file mode 100644 index 0000000..42c1661 --- /dev/null +++ b/arch/arm/mach-omap2/board-overo.c @@ -0,0 +1,234 @@ +/* + * board-overo.c (Gumstix Overo) + * + * Initial code: Steve Sakoman steve@sakoman.com + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ + +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/platform_device.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/onenand_regs.h> + +#include <asm/mach-types.h> +#include <asm/mach/arch.h> +#include <asm/mach/flash.h> +#include <asm/mach/map.h> + +#include <mach/board-overo.h> +#include <mach/board.h> +#include <mach/common.h> +#include <mach/gpio.h> +#include <mach/gpmc.h> +#include <mach/hardware.h> +#include <mach/hsmmc.h> +#include <mach/onenand.h> +#include <mach/usb-ehci.h> +#include <mach/usb-musb.h> + +#include "sdram-micron-mt46h32m32lf-6.h" + +#define NAND_BLOCK_SIZE SZ_128K + +#define OVERO_GPIO_W2W_NRESET 16 +#define OVERO_GPIO_BT_NRESET 164 +#define OVERO_GPIO_USBH_CPEN 168 +#define OVERO_GPIO_USBH_NRESET 183 + +static struct mtd_partition overo_onenand_partitions[] = { + { + .name = "xloader", + .offset = 0, + .size = 4 * NAND_BLOCK_SIZE, + .mask_flags = MTD_WRITEABLE + }, + { + .name = "uboot", + .offset = MTDPART_OFS_APPEND, + .size = 15 * NAND_BLOCK_SIZE, + }, + { + .name = "params", + .offset = MTDPART_OFS_APPEND, + .size = 1 * NAND_BLOCK_SIZE, + }, + { + .name = "linux", + .offset = MTDPART_OFS_APPEND, + .size = 40 * NAND_BLOCK_SIZE, + }, + { + .name = "rootfs", + .offset = MTDPART_OFS_APPEND, + .size = MTDPART_SIZ_FULL, + }, +}; + +static struct omap_onenand_platform_data overo_onenand_data = { + .parts = overo_onenand_partitions, + .nr_parts = ARRAY_SIZE(overo_onenand_partitions), + .dma_channel = -1, /* disable DMA in OMAP OneNAND driver */ +}; + +static struct platform_device overo_onenand_device = { + .name = "omap2-onenand", + .id = -1, + .dev = { + .platform_data = &overo_onenand_data, + }, +}; + +static void __init overo_flash_init(void) +{ + u8 cs = 0; + u8 onenandcs = GPMC_CS_NUM + 1; + + while (cs < GPMC_CS_NUM) { + u32 ret = 0; + ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG7); + + if ((ret & 0x3F) == (ONENAND_MAP >> 24)) + onenandcs = cs; + cs++; + } + if (onenandcs > GPMC_CS_NUM) { + printk(KERN_ERR "OneNAND: Unable to find configuration " + " in GPMC\n"); + return; + } + + if (onenandcs < GPMC_CS_NUM) { + overo_onenand_data.cs = onenandcs; + if (platform_device_register(&overo_onenand_device) < 0) + printk(KERN_ERR "Unable to register OneNAND device\n"); + } +} +static struct omap_uart_config overo_uart_config __initdata = { + .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)), +}; + +static int __init overo_i2c_init(void) +{ + omap_register_i2c_bus(1, 2600, NULL, 0); + /* i2c2 pins are used for gpio */ + omap_register_i2c_bus(3, 400, NULL, 0); + return 0; +} + +static void __init overo_init_irq(void) +{ + omap2_init_common_hw(mt46h32m32lf6_sdrc_params); + omap_init_irq(); + omap_gpio_init(); +} + +static struct omap_mmc_config overo_mmc_config __initdata = { + .mmc[0] = { + .enabled = 1, + .wire4 = 1, + }, + .mmc[1] = { + .enabled = 1, + .wire4 = 1, + }, +}; + +static struct platform_device overo_twl4030rtc_device = { + .name = "twl4030_rtc", + .id = -1, +}; + +static struct omap_board_config_kernel overo_config[] __initdata = { + { OMAP_TAG_UART, &overo_uart_config }, + { OMAP_TAG_MMC, &overo_mmc_config }, +}; + +static struct platform_device *overo_devices[] __initdata = { +#ifdef CONFIG_RTC_DRV_TWL4030 + &overo_twl4030rtc_device, +#endif +}; + +static void __init overo_init(void) +{ + overo_i2c_init(); + platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices)); + omap_board_config = overo_config; + omap_board_config_size = ARRAY_SIZE(overo_config); + omap_serial_init(); + hsmmc_init(); + usb_musb_init(); + usb_ehci_init(); + overo_flash_init(); + + if ((gpio_request(OVERO_GPIO_W2W_NRESET, + "OVERO_GPIO_W2W_NRESET") == 0) && + (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) { + gpio_export(OVERO_GPIO_W2W_NRESET, 0); + gpio_set_value(OVERO_GPIO_W2W_NRESET, 0); + udelay(10); + gpio_set_value(OVERO_GPIO_W2W_NRESET, 1); + } else { + printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_W2W_NRESET\n"); + } + + if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) && + (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) { + gpio_export(OVERO_GPIO_BT_NRESET, 0); + gpio_set_value(OVERO_GPIO_BT_NRESET, 0); + mdelay(6); + gpio_set_value(OVERO_GPIO_BT_NRESET, 1); + } else { + printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_NRESET\n"); + } + + if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) && + (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0)) + gpio_export(OVERO_GPIO_USBH_CPEN, 0); + else + printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_USBH_CPEN\n"); + + if ((gpio_request(OVERO_GPIO_USBH_NRESET, + "OVERO_GPIO_USBH_NRESET") == 0) && + (gpio_direction_output(OVERO_GPIO_USBH_NRESET, 1) == 0)) + gpio_export(OVERO_GPIO_USBH_NRESET, 0); + else + printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_USBH_NRESET\n"); +} + +static void __init overo_map_io(void) +{ + omap2_set_globals_343x(); + omap2_map_common_io(); +} + +MACHINE_START(OVERO, "Gumstix Overo") + .phys_io = 0x48000000, + .io_pg_offst = ((0xd8000000) >> 18) & 0xfffc, + .boot_params = 0x80000100, + .map_io = overo_map_io, + .init_irq = overo_init_irq, + .init_machine = overo_init, + .timer = &omap_timer, +MACHINE_END