1 files changed, 298 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/board-dm355-evm.c b/arch/arm/mach-davinci/board-dm355-evm.c
new file mode 100644
index 000000000000..5ac2f565d860
--- /dev/null
+++ b/arch/arm/mach-davinci/board-dm355-evm.c
@@ -0,0 +1,298 @@
+/*
+ * TI DaVinci EVM board support
+ *
+ * Author: Kevin Hilman, Deep Root Systems, LLC
+ *
+ * 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 <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/nand.h>
+#include <linux/i2c.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+#include <linux/clk.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/eeprom.h>
+
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/flash.h>
+
+#include <mach/hardware.h>
+#include <mach/dm355.h>
+#include <mach/psc.h>
+#include <mach/common.h>
+#include <mach/i2c.h>
+#include <mach/serial.h>
+#include <mach/nand.h>
+#include <mach/mmc.h>
+#include <mach/common.h>
+
+#define DAVINCI_ASYNC_EMIF_CONTROL_BASE         0x01e10000
+#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE        0x02000000
+
+/* NOTE:  this is geared for the standard config, with a socketed
+ * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors.  If you
+ * swap chips, maybe with a different block size, partitioning may
+ * need to be changed.
+ */
+#define NAND_BLOCK_SIZE         SZ_128K
+
+static struct mtd_partition davinci_nand_partitions[] = {
+        {
+                /* UBL (a few copies) plus U-Boot */
+                .name           = "bootloader",
+                .offset         = 0,
+                .size           = 15 * NAND_BLOCK_SIZE,
+                .mask_flags     = MTD_WRITEABLE, /* force read-only */
+        }, {
+                /* U-Boot environment */
+                .name           = "params",
+                .offset         = MTDPART_OFS_APPEND,
+                .size           = 1 * NAND_BLOCK_SIZE,
+                .mask_flags     = 0,
+        }, {
+                .name           = "kernel",
+                .offset         = MTDPART_OFS_APPEND,
+                .size           = SZ_4M,
+                .mask_flags     = 0,
+        }, {
+                .name           = "filesystem1",
+                .offset         = MTDPART_OFS_APPEND,
+                .size           = SZ_512M,
+                .mask_flags     = 0,
+        }, {
+                .name           = "filesystem2",
+                .offset         = MTDPART_OFS_APPEND,
+                .size           = MTDPART_SIZ_FULL,
+                .mask_flags     = 0,
+        }
+        /* two blocks with bad block table (and mirror) at the end */
+};
+
+static struct davinci_nand_pdata davinci_nand_data = {
+        .mask_chipsel           = BIT(14),
+        .parts                  = davinci_nand_partitions,
+        .nr_parts               = ARRAY_SIZE(davinci_nand_partitions),
+        .ecc_mode               = NAND_ECC_HW_SYNDROME,
+        .options                = NAND_USE_FLASH_BBT,
+};
+
+static struct resource davinci_nand_resources[] = {
+        {
+                .start          = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE,
+                .end            = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 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_nand_device = {
+        .name                   = "davinci_nand",
+        .id                     = 0,
+
+        .num_resources          = ARRAY_SIZE(davinci_nand_resources),
+        .resource               = davinci_nand_resources,
+
+        .dev                    = {
+                .platform_data  = &davinci_nand_data,
+        },
+};
+
+static struct davinci_i2c_platform_data i2c_pdata = {
+        .bus_freq       = 400   /* kHz */,
+        .bus_delay      = 0     /* usec */,
+};
+
+static int dm355evm_mmc_gpios = -EINVAL;
+
+static void dm355evm_mmcsd_gpios(unsigned gpio)
+{
+        gpio_request(gpio + 0, "mmc0_ro");
+        gpio_request(gpio + 1, "mmc0_cd");
+        gpio_request(gpio + 2, "mmc1_ro");
+        gpio_request(gpio + 3, "mmc1_cd");
+
+        /* we "know" these are input-only so we don't
+         * need to call gpio_direction_input()
+         */
+
+        dm355evm_mmc_gpios = gpio;
+}
+
+static struct i2c_board_info dm355evm_i2c_info[] = {
+        { I2C_BOARD_INFO("dm355evm_msp", 0x25),
+                .platform_data = dm355evm_mmcsd_gpios,
+                /* plus irq */ },
+        /* { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }, */
+        /* { I2C_BOARD_INFO("tvp5146", 0x5d), }, */
+};
+
+static void __init evm_init_i2c(void)
+{
+        davinci_init_i2c(&i2c_pdata);
+
+        gpio_request(5, "dm355evm_msp");
+        gpio_direction_input(5);
+        dm355evm_i2c_info[0].irq = gpio_to_irq(5);
+
+        i2c_register_board_info(1, dm355evm_i2c_info,
+                        ARRAY_SIZE(dm355evm_i2c_info));
+}
+
+static struct resource dm355evm_dm9000_rsrc[] = {
+        {
+                /* addr */
+                .start  = 0x04014000,
+                .end    = 0x04014001,
+                .flags  = IORESOURCE_MEM,
+        }, {
+                /* data */
+                .start  = 0x04014002,
+                .end    = 0x04014003,
+                .flags  = IORESOURCE_MEM,
+        }, {
+                .flags  = IORESOURCE_IRQ
+                        | IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */,
+        },
+};
+
+static struct platform_device dm355evm_dm9000 = {
+        .name           = "dm9000",
+        .id             = -1,
+        .resource       = dm355evm_dm9000_rsrc,
+        .num_resources  = ARRAY_SIZE(dm355evm_dm9000_rsrc),
+};
+
+static struct platform_device *davinci_evm_devices[] __initdata = {
+        &dm355evm_dm9000,
+        &davinci_nand_device,
+};
+
+static struct davinci_uart_config uart_config __initdata = {
+        .enabled_uarts = (1 << 0),
+};
+
+static void __init dm355_evm_map_io(void)
+{
+        dm355_init();
+}
+
+static int dm355evm_mmc_get_cd(int module)
+{
+        if (!gpio_is_valid(dm355evm_mmc_gpios))
+                return -ENXIO;
+        /* low == card present */
+        return !gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 1);
+}
+
+static int dm355evm_mmc_get_ro(int module)
+{
+        if (!gpio_is_valid(dm355evm_mmc_gpios))
+                return -ENXIO;
+        /* high == card's write protect switch active */
+        return gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 0);
+}
+
+static struct davinci_mmc_config dm355evm_mmc_config = {
+        .get_cd         = dm355evm_mmc_get_cd,
+        .get_ro         = dm355evm_mmc_get_ro,
+        .wires          = 4,
+        .max_freq       = 50000000,
+        .caps           = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
+        .version        = MMC_CTLR_VERSION_1,
+};
+
+/* Don't connect anything to J10 unless you're only using USB host
+ * mode *and* have to do so with some kind of gender-bender.  If
+ * you have proper Mini-B or Mini-A cables (or Mini-A adapters)
+ * the ID pin won't need any help.
+ */
+#ifdef CONFIG_USB_MUSB_PERIPHERAL
+#define USB_ID_VALUE    0       /* ID pulled high; *should* float */
+#else
+#define USB_ID_VALUE    1       /* ID pulled low */
+#endif
+
+static struct spi_eeprom at25640a = {
+        .byte_len       = SZ_64K / 8,
+        .name           = "at25640a",
+        .page_size      = 32,
+        .flags          = EE_ADDR2,
+};
+
+static struct spi_board_info dm355_evm_spi_info[] __initconst = {
+        {
+                .modalias       = "at25",
+                .platform_data  = &at25640a,
+                .max_speed_hz   = 10 * 1000 * 1000,     /* at 3v3 */
+                .bus_num        = 0,
+                .chip_select    = 0,
+                .mode           = SPI_MODE_0,
+        },
+};
+
+static __init void dm355_evm_init(void)
+{
+        struct clk *aemif;
+
+        gpio_request(1, "dm9000");
+        gpio_direction_input(1);
+        dm355evm_dm9000_rsrc[2].start = gpio_to_irq(1);
+
+        aemif = clk_get(&dm355evm_dm9000.dev, "aemif");
+        if (IS_ERR(aemif))
+                WARN("%s: unable to get AEMIF clock\n", __func__);
+        else
+                clk_enable(aemif);
+
+        platform_add_devices(davinci_evm_devices,
+                             ARRAY_SIZE(davinci_evm_devices));
+        evm_init_i2c();
+        davinci_serial_init(&uart_config);
+
+        /* NOTE:  NAND flash timings set by the UBL are slower than
+         * needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204
+         * but could be 0x0400008c for about 25% faster page reads.
+         */
+
+        gpio_request(2, "usb_id_toggle");
+        gpio_direction_output(2, USB_ID_VALUE);
+        /* irlml6401 switches over 1A in under 8 msec */
+        setup_usb(500, 8);
+
+        davinci_setup_mmc(0, &dm355evm_mmc_config);
+        davinci_setup_mmc(1, &dm355evm_mmc_config);
+
+        dm355_init_spi0(BIT(0), dm355_evm_spi_info,
+                        ARRAY_SIZE(dm355_evm_spi_info));
+}
+
+static __init void dm355_evm_irq_init(void)
+{
+        davinci_irq_init();
+}
+
+MACHINE_START(DAVINCI_DM355_EVM, "DaVinci DM355 EVM")
+        .phys_io      = IO_PHYS,
+        .io_pg_offst  = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
+        .boot_params  = (0x80000100),
+        .map_io       = dm355_evm_map_io,
+        .init_irq     = dm355_evm_irq_init,
+        .timer        = &davinci_timer,
+        .init_machine = dm355_evm_init,
+MACHINE_END