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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/arm/mach-davinci/board-dm355-leopard.c
Initial import
Diffstat (limited to 'arch/arm/mach-davinci/board-dm355-leopard.c')
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diff --git a/arch/arm/mach-davinci/board-dm355-leopard.c b/arch/arm/mach-davinci/board-dm355-leopard.c
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index 000000000..680a7a2d9
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+++ b/arch/arm/mach-davinci/board-dm355-leopard.c
@@ -0,0 +1,281 @@
+/*
+ * 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/init.h>
+#include <linux/err.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/gpio.h>
+#include <linux/clk.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/eeprom.h>
+#include <linux/platform_data/i2c-davinci.h>
+#include <linux/platform_data/mmc-davinci.h>
+#include <linux/platform_data/mtd-davinci.h>
+#include <linux/platform_data/usb-davinci.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+
+#include <mach/common.h>
+#include <mach/serial.h>
+
+#include "davinci.h"
+
+/* 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,
+ .ecc_bits = 4,
+ .bbt_options = NAND_BBT_USE_FLASH,
+};
+
+static struct resource davinci_nand_resources[] = {
+ {
+ .start = DM355_ASYNC_EMIF_DATA_CE0_BASE,
+ .end = DM355_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .start = DM355_ASYNC_EMIF_CONTROL_BASE,
+ .end = DM355_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 void __init dm355_leopard_map_io(void)
+{
+ dm355_init();
+}
+
+static int dm355leopard_mmc_get_cd(int module)
+{
+ if (!gpio_is_valid(leopard_mmc_gpio))
+ return -ENXIO;
+ /* low == card present */
+ return !gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 1);
+}
+
+static int dm355leopard_mmc_get_ro(int module)
+{
+ if (!gpio_is_valid(leopard_mmc_gpio))
+ return -ENXIO;
+ /* high == card's write protect switch active */
+ return gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 0);
+}
+
+static struct davinci_mmc_config dm355leopard_mmc_config = {
+ .get_cd = dm355leopard_mmc_get_cd,
+ .get_ro = dm355leopard_mmc_get_ro,
+ .wires = 4,
+ .max_freq = 50000000,
+ .caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
+};
+
+/* 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.
+ */
+#define USB_ID_VALUE 1 /* ID pulled low */
+
+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;
+ int ret;
+
+ ret = dm355_gpio_register();
+ if (ret)
+ pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
+
+ 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_prepare_enable(aemif);
+
+ platform_add_devices(davinci_leopard_devices,
+ ARRAY_SIZE(davinci_leopard_devices));
+ leopard_init_i2c();
+ davinci_serial_init(dm355_serial_device);
+
+ /* 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 */
+ davinci_setup_usb(1000, 8);
+
+ davinci_setup_mmc(0, &dm355leopard_mmc_config);
+ davinci_setup_mmc(1, &dm355leopard_mmc_config);
+
+ dm355_init_spi0(BIT(0), dm355_leopard_spi_info,
+ ARRAY_SIZE(dm355_leopard_spi_info));
+}
+
+MACHINE_START(DM355_LEOPARD, "DaVinci DM355 leopard")
+ .atag_offset = 0x100,
+ .map_io = dm355_leopard_map_io,
+ .init_irq = davinci_irq_init,
+ .init_time = davinci_timer_init,
+ .init_machine = dm355_leopard_init,
+ .init_late = davinci_init_late,
+ .dma_zone_size = SZ_128M,
+ .restart = davinci_restart,
+MACHINE_END