davinci: DM355: add base SoC and board support

In addition, add board support for the DM355 Evaluation Module (EVM)
and the DM355 Leopard board.

Original DM355 EVM support done by Sandeep Paulraj, with significant
updates and improvements by David Brownell.  DM355 Leopord support
done by Koen Kooi.

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Koen Kooi <koen@beagleboard.org>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

1 files changed, 268 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/board-dm355-leopard.c b/arch/arm/mach-davinci/board-dm355-leopard.c
new file mode 100644
index 00000000000..22f16f38a0b
--- /dev/null
+++ b/arch/arm/mach-davinci/board-dm355-leopard.c
@@ -0,0 +1,268 @@
+/*
+ * DM355 leopard board support
+ *
+ * Based on board-dm355-evm.c
+ *
+ * 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>
+
+#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 leopard_mmc_gpio = -EINVAL;
+
+static void dm355leopard_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()
+	 */
+
+	leopard_mmc_gpio = gpio;
+}
+
+static struct i2c_board_info dm355leopard_i2c_info[] = {
+	{ I2C_BOARD_INFO("dm355leopard_msp", 0x25),
+		.platform_data = dm355leopard_mmcsd_gpios,
+		/* plus irq */ },
+	/* { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }, */
+	/* { I2C_BOARD_INFO("tvp5146", 0x5d), }, */
+};
+
+static void __init leopard_init_i2c(void)
+{
+	davinci_init_i2c(&i2c_pdata);
+
+	gpio_request(5, "dm355leopard_msp");
+	gpio_direction_input(5);
+	dm355leopard_i2c_info[0].irq = gpio_to_irq(5);
+
+	i2c_register_board_info(1, dm355leopard_i2c_info,
+			ARRAY_SIZE(dm355leopard_i2c_info));
+}
+
+static struct resource dm355leopard_dm9000_rsrc[] = {
+	{
+		/* addr */
+		.start	= 0x04000000,
+		.end	= 0x04000001,
+		.flags	= IORESOURCE_MEM,
+	}, {
+		/* data */
+		.start	= 0x04000016,
+		.end	= 0x04000017,
+		.flags	= IORESOURCE_MEM,
+	}, {
+		.flags	= IORESOURCE_IRQ
+			| IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */,
+	},
+};
+
+static struct platform_device dm355leopard_dm9000 = {
+	.name		= "dm9000",
+	.id		= -1,
+	.resource	= dm355leopard_dm9000_rsrc,
+	.num_resources	= ARRAY_SIZE(dm355leopard_dm9000_rsrc),
+};
+
+static struct platform_device *davinci_leopard_devices[] __initdata = {
+	&dm355leopard_dm9000,
+	&davinci_nand_device,
+};
+
+static struct davinci_uart_config uart_config __initdata = {
+	.enabled_uarts = (1 << 0),
+};
+
+static void __init dm355_leopard_map_io(void)
+{
+	davinci_map_common_io();
+	dm355_init();
+}
+
+/* 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_leopard_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_leopard_init(void)
+{
+	struct clk *aemif;
+
+	gpio_request(9, "dm9000");
+	gpio_direction_input(9);
+	dm355leopard_dm9000_rsrc[2].start = gpio_to_irq(9);
+
+	aemif = clk_get(&dm355leopard_dm9000.dev, "aemif");
+	if (IS_ERR(aemif))
+		WARN("%s: unable to get AEMIF clock\n", __func__);
+	else
+		clk_enable(aemif);
+
+	platform_add_devices(davinci_leopard_devices,
+			     ARRAY_SIZE(davinci_leopard_devices));
+	leopard_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);
+
+	dm355_init_spi0(BIT(0), dm355_leopard_spi_info,
+			ARRAY_SIZE(dm355_leopard_spi_info));
+}
+
+static __init void dm355_leopard_irq_init(void)
+{
+	davinci_irq_init();
+}
+
+MACHINE_START(DM355_LEOPARD, "DaVinci DM355 leopard")
+	.phys_io      = IO_PHYS,
+	.io_pg_offst  = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
+	.boot_params  = (0x80000100),
+	.map_io	      = dm355_leopard_map_io,
+	.init_irq     = dm355_leopard_irq_init,
+	.timer	      = &davinci_timer,
+	.init_machine = dm355_leopard_init,
+MACHINE_END