From: Steve Sakoman steve@sakoman.com
This patch adds support for basic features: nand, uarts, i2c, mmc, rtc, and usb
Signed-off-by: Steve Sakoman steve@sakoman.com --- arch/arm/mach-omap2/Kconfig | 4 + arch/arm/mach-omap2/Makefile | 4 + arch/arm/mach-omap2/board-overo.c | 249 +++++++++++++++++++++++++ arch/arm/plat-omap/include/mach/board-overo.h | 25 +++ 4 files changed, 282 insertions(+), 0 deletions(-) create mode 100644 arch/arm/mach-omap2/board-overo.c create mode 100644 arch/arm/plat-omap/include/mach/board-overo.h
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 c667821..e18da0c 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -76,6 +76,10 @@ 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..5510049 --- /dev/null +++ b/arch/arm/mach-omap2/board-overo.c @@ -0,0 +1,249 @@ +/* + * 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/nand.h> +#include <linux/mtd/partitions.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/nand.h> +#include <mach/usb-ehci.h> +#include <mach/usb-musb.h> + +#include "sdram-micron-mt46h32m32lf-6.h" + +#define NAND_BLOCK_SIZE SZ_128K +#define GPMC_CS0_BASE 0x60 +#define GPMC_CS_SIZE 0x30 + +static struct mtd_partition overo_nand_partitions[] = { + { + .name = "xloader", + .offset = 0, /* Offset = 0x00000 */ + .size = 4 * NAND_BLOCK_SIZE, + .mask_flags = MTD_WRITEABLE + }, + { + .name = "uboot", + .offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */ + .size = 14 * NAND_BLOCK_SIZE, + }, + { + .name = "uboot environment", + .offset = MTDPART_OFS_APPEND, /* Offset = 0x240000 */ + .size = 2 * NAND_BLOCK_SIZE, + }, + { + .name = "linux", + .offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */ + .size = 32 * NAND_BLOCK_SIZE, + }, + { + .name = "rootfs", + .offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */ + .size = MTDPART_SIZ_FULL, + }, +}; + +static struct omap_nand_platform_data overo_nand_data = { + .parts = overo_nand_partitions, + .nr_parts = ARRAY_SIZE(overo_nand_partitions), + .dma_channel = -1, /* disable DMA in OMAP NAND driver */ +}; + +static struct resource overo_nand_resource = { + .flags = IORESOURCE_MEM, +}; + +static struct platform_device overo_nand_device = { + .name = "omap2-nand", + .id = -1, + .dev = { + .platform_data = &overo_nand_data, + }, + .num_resources = 1, + .resource = &overo_nand_resource, +}; + + +static void __init overo_flash_init(void) +{ + u8 cs = 0; + u8 nandcs = GPMC_CS_NUM + 1; + + u32 gpmc_base_add = OMAP34XX_GPMC_VIRT; + + /* find out the chip-select on which NAND exists */ + while (cs < GPMC_CS_NUM) { + u32 ret = 0; + ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1); + + if ((ret & 0xC00) == 0x800) { + printk(KERN_INFO "Found NAND on CS%d\n", cs); + if (nandcs > GPMC_CS_NUM) + nandcs = cs; + } + cs++; + } + + if (nandcs > GPMC_CS_NUM) { + printk(KERN_INFO "NAND: Unable to find configuration " + "in GPMC\n "); + return; + } + + if (nandcs < GPMC_CS_NUM) { + overo_nand_data.cs = nandcs; + overo_nand_data.gpmc_cs_baseaddr = (void *) + (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE); + overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add); + + printk(KERN_INFO "Registering NAND on CS%d\n", nandcs); + if (platform_device_register(&overo_nand_device) < 0) + printk(KERN_ERR "Unable to register NAND 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 diff --git a/arch/arm/plat-omap/include/mach/board-overo.h b/arch/arm/plat-omap/include/mach/board-overo.h new file mode 100644 index 0000000..b70f22a --- /dev/null +++ b/arch/arm/plat-omap/include/mach/board-overo.h @@ -0,0 +1,25 @@ +/* + * board-overo.h (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 as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * 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., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef __ASM_ARCH_OVERO_H +#define __ASM_ARCH_OVERO_H + +#define OVERO_GPIO_W2W_NRESET 16 +#define OVERO_GPIO_BT_NRESET 164 +#define OVERO_GPIO_USBH_CPEN 168 +#define OVERO_GPIO_USBH_NRESET 183 + +#endif /* ____ASM_ARCH_OVERO_H */ +