[alsa-devel] [PATCH 1/5] ARM: OMAP2: Add support for the Gumstix Overo board (rev 3)
sakoman at gmail.com
sakoman at gmail.com
Sun Sep 7 08:41:40 CEST 2008
From: Steve Sakoman <steve at sakoman.com>
This patch adds support for basic features: nand, uarts, i2c,
mmc, rtc, and usb
Signed-off-by: Steve Sakoman <steve at 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 at 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 at 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 */
+
--
1.5.4.5
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