1 files changed, 425 insertions, 0 deletions

diff --git a/arch/arm/mach-mx5/board-mx51_babbage.c b/arch/arm/mach-mx5/board-mx51_babbage.c
new file mode 100644
index 00000000000..11b0ff67f89
--- /dev/null
+++ b/arch/arm/mach-mx5/board-mx51_babbage.c
@@ -0,0 +1,425 @@
+/*
+ * Copyright 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright (C) 2009-2010 Amit Kucheria <amit.kucheria@canonical.com>
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/input.h>
+#include <linux/spi/flash.h>
+#include <linux/spi/spi.h>
+
+#include <mach/common.h>
+#include <mach/hardware.h>
+#include <mach/iomux-mx51.h>
+
+#include <asm/irq.h>
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/time.h>
+
+#include "devices-imx51.h"
+#include "devices.h"
+#include "cpu_op-mx51.h"
+
+#define BABBAGE_USB_HUB_RESET   IMX_GPIO_NR(1, 7)
+#define BABBAGE_USBH1_STP       IMX_GPIO_NR(1, 27)
+#define BABBAGE_USB_PHY_RESET   IMX_GPIO_NR(2, 5)
+#define BABBAGE_FEC_PHY_RESET   IMX_GPIO_NR(2, 14)
+#define BABBAGE_POWER_KEY       IMX_GPIO_NR(2, 21)
+#define BABBAGE_ECSPI1_CS0      IMX_GPIO_NR(4, 24)
+#define BABBAGE_ECSPI1_CS1      IMX_GPIO_NR(4, 25)
+#define BABBAGE_SD2_CD          IMX_GPIO_NR(1, 6)
+#define BABBAGE_SD2_WP          IMX_GPIO_NR(1, 5)
+
+/* USB_CTRL_1 */
+#define MX51_USB_CTRL_1_OFFSET                  0x10
+#define MX51_USB_CTRL_UH1_EXT_CLK_EN            (1 << 25)
+
+#define MX51_USB_PLLDIV_12_MHZ          0x00
+#define MX51_USB_PLL_DIV_19_2_MHZ       0x01
+#define MX51_USB_PLL_DIV_24_MHZ 0x02
+
+static struct gpio_keys_button babbage_buttons[] = {
+        {
+                .gpio           = BABBAGE_POWER_KEY,
+                .code           = BTN_0,
+                .desc           = "PWR",
+                .active_low     = 1,
+                .wakeup         = 1,
+        },
+};
+
+static const struct gpio_keys_platform_data imx_button_data __initconst = {
+        .buttons        = babbage_buttons,
+        .nbuttons       = ARRAY_SIZE(babbage_buttons),
+};
+
+static iomux_v3_cfg_t mx51babbage_pads[] = {
+        /* UART1 */
+        MX51_PAD_UART1_RXD__UART1_RXD,
+        MX51_PAD_UART1_TXD__UART1_TXD,
+        MX51_PAD_UART1_RTS__UART1_RTS,
+        MX51_PAD_UART1_CTS__UART1_CTS,
+
+        /* UART2 */
+        MX51_PAD_UART2_RXD__UART2_RXD,
+        MX51_PAD_UART2_TXD__UART2_TXD,
+
+        /* UART3 */
+        MX51_PAD_EIM_D25__UART3_RXD,
+        MX51_PAD_EIM_D26__UART3_TXD,
+        MX51_PAD_EIM_D27__UART3_RTS,
+        MX51_PAD_EIM_D24__UART3_CTS,
+
+        /* I2C1 */
+        MX51_PAD_EIM_D16__I2C1_SDA,
+        MX51_PAD_EIM_D19__I2C1_SCL,
+
+        /* I2C2 */
+        MX51_PAD_KEY_COL4__I2C2_SCL,
+        MX51_PAD_KEY_COL5__I2C2_SDA,
+
+        /* HSI2C */
+        MX51_PAD_I2C1_CLK__I2C1_CLK,
+        MX51_PAD_I2C1_DAT__I2C1_DAT,
+
+        /* USB HOST1 */
+        MX51_PAD_USBH1_CLK__USBH1_CLK,
+        MX51_PAD_USBH1_DIR__USBH1_DIR,
+        MX51_PAD_USBH1_NXT__USBH1_NXT,
+        MX51_PAD_USBH1_DATA0__USBH1_DATA0,
+        MX51_PAD_USBH1_DATA1__USBH1_DATA1,
+        MX51_PAD_USBH1_DATA2__USBH1_DATA2,
+        MX51_PAD_USBH1_DATA3__USBH1_DATA3,
+        MX51_PAD_USBH1_DATA4__USBH1_DATA4,
+        MX51_PAD_USBH1_DATA5__USBH1_DATA5,
+        MX51_PAD_USBH1_DATA6__USBH1_DATA6,
+        MX51_PAD_USBH1_DATA7__USBH1_DATA7,
+
+        /* USB HUB reset line*/
+        MX51_PAD_GPIO1_7__GPIO1_7,
+
+        /* USB PHY reset line */
+        MX51_PAD_EIM_D21__GPIO2_5,
+
+        /* FEC */
+        MX51_PAD_EIM_EB2__FEC_MDIO,
+        MX51_PAD_EIM_EB3__FEC_RDATA1,
+        MX51_PAD_EIM_CS2__FEC_RDATA2,
+        MX51_PAD_EIM_CS3__FEC_RDATA3,
+        MX51_PAD_EIM_CS4__FEC_RX_ER,
+        MX51_PAD_EIM_CS5__FEC_CRS,
+        MX51_PAD_NANDF_RB2__FEC_COL,
+        MX51_PAD_NANDF_RB3__FEC_RX_CLK,
+        MX51_PAD_NANDF_D9__FEC_RDATA0,
+        MX51_PAD_NANDF_D8__FEC_TDATA0,
+        MX51_PAD_NANDF_CS2__FEC_TX_ER,
+        MX51_PAD_NANDF_CS3__FEC_MDC,
+        MX51_PAD_NANDF_CS4__FEC_TDATA1,
+        MX51_PAD_NANDF_CS5__FEC_TDATA2,
+        MX51_PAD_NANDF_CS6__FEC_TDATA3,
+        MX51_PAD_NANDF_CS7__FEC_TX_EN,
+        MX51_PAD_NANDF_RDY_INT__FEC_TX_CLK,
+
+        /* FEC PHY reset line */
+        MX51_PAD_EIM_A20__GPIO2_14,
+
+        /* SD 1 */
+        MX51_PAD_SD1_CMD__SD1_CMD,
+        MX51_PAD_SD1_CLK__SD1_CLK,
+        MX51_PAD_SD1_DATA0__SD1_DATA0,
+        MX51_PAD_SD1_DATA1__SD1_DATA1,
+        MX51_PAD_SD1_DATA2__SD1_DATA2,
+        MX51_PAD_SD1_DATA3__SD1_DATA3,
+        /* CD/WP from controller */
+        MX51_PAD_GPIO1_0__SD1_CD,
+        MX51_PAD_GPIO1_1__SD1_WP,
+
+        /* SD 2 */
+        MX51_PAD_SD2_CMD__SD2_CMD,
+        MX51_PAD_SD2_CLK__SD2_CLK,
+        MX51_PAD_SD2_DATA0__SD2_DATA0,
+        MX51_PAD_SD2_DATA1__SD2_DATA1,
+        MX51_PAD_SD2_DATA2__SD2_DATA2,
+        MX51_PAD_SD2_DATA3__SD2_DATA3,
+        /* CD/WP gpio */
+        MX51_PAD_GPIO1_6__GPIO1_6,
+        MX51_PAD_GPIO1_5__GPIO1_5,
+
+        /* eCSPI1 */
+        MX51_PAD_CSPI1_MISO__ECSPI1_MISO,
+        MX51_PAD_CSPI1_MOSI__ECSPI1_MOSI,
+        MX51_PAD_CSPI1_SCLK__ECSPI1_SCLK,
+        MX51_PAD_CSPI1_SS0__GPIO4_24,
+        MX51_PAD_CSPI1_SS1__GPIO4_25,
+};
+
+/* Serial ports */
+static const struct imxuart_platform_data uart_pdata __initconst = {
+        .flags = IMXUART_HAVE_RTSCTS,
+};
+
+static const struct imxi2c_platform_data babbage_i2c_data __initconst = {
+        .bitrate = 100000,
+};
+
+static struct imxi2c_platform_data babbage_hsi2c_data = {
+        .bitrate = 400000,
+};
+
+static struct gpio mx51_babbage_usbh1_gpios[] = {
+        { BABBAGE_USBH1_STP, GPIOF_OUT_INIT_LOW, "usbh1_stp" },
+        { BABBAGE_USB_PHY_RESET, GPIOF_OUT_INIT_LOW, "usbh1_phy_reset" },
+};
+
+static int gpio_usbh1_active(void)
+{
+        iomux_v3_cfg_t usbh1stp_gpio = MX51_PAD_USBH1_STP__GPIO1_27;
+        int ret;
+
+        /* Set USBH1_STP to GPIO and toggle it */
+        mxc_iomux_v3_setup_pad(usbh1stp_gpio);
+        ret = gpio_request_array(mx51_babbage_usbh1_gpios,
+                                        ARRAY_SIZE(mx51_babbage_usbh1_gpios));
+
+        if (ret) {
+                pr_debug("failed to get USBH1 pins: %d\n", ret);
+                return ret;
+        }
+
+        msleep(100);
+        gpio_set_value(BABBAGE_USBH1_STP, 1);
+        gpio_set_value(BABBAGE_USB_PHY_RESET, 1);
+        gpio_free_array(mx51_babbage_usbh1_gpios,
+                                        ARRAY_SIZE(mx51_babbage_usbh1_gpios));
+        return 0;
+}
+
+static inline void babbage_usbhub_reset(void)
+{
+        int ret;
+
+        /* Reset USB hub */
+        ret = gpio_request_one(BABBAGE_USB_HUB_RESET,
+                                        GPIOF_OUT_INIT_LOW, "GPIO1_7");
+        if (ret) {
+                printk(KERN_ERR"failed to get GPIO_USB_HUB_RESET: %d\n", ret);
+                return;
+        }
+
+        msleep(2);
+        /* Deassert reset */
+        gpio_set_value(BABBAGE_USB_HUB_RESET, 1);
+}
+
+static inline void babbage_fec_reset(void)
+{
+        int ret;
+
+        /* reset FEC PHY */
+        ret = gpio_request_one(BABBAGE_FEC_PHY_RESET,
+                                        GPIOF_OUT_INIT_LOW, "fec-phy-reset");
+        if (ret) {
+                printk(KERN_ERR"failed to get GPIO_FEC_PHY_RESET: %d\n", ret);
+                return;
+        }
+        msleep(1);
+        gpio_set_value(BABBAGE_FEC_PHY_RESET, 1);
+}
+
+/* This function is board specific as the bit mask for the plldiv will also
+be different for other Freescale SoCs, thus a common bitmask is not
+possible and cannot get place in /plat-mxc/ehci.c.*/
+static int initialize_otg_port(struct platform_device *pdev)
+{
+        u32 v;
+        void __iomem *usb_base;
+        void __iomem *usbother_base;
+
+        usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K);
+        if (!usb_base)
+                return -ENOMEM;
+        usbother_base = usb_base + MX5_USBOTHER_REGS_OFFSET;
+
+        /* Set the PHY clock to 19.2MHz */
+        v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET);
+        v &= ~MX5_USB_UTMI_PHYCTRL1_PLLDIV_MASK;
+        v |= MX51_USB_PLL_DIV_19_2_MHZ;
+        __raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET);
+        iounmap(usb_base);
+
+        mdelay(10);
+
+        return mx51_initialize_usb_hw(0, MXC_EHCI_INTERNAL_PHY);
+}
+
+static int initialize_usbh1_port(struct platform_device *pdev)
+{
+        u32 v;
+        void __iomem *usb_base;
+        void __iomem *usbother_base;
+
+        usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K);
+        if (!usb_base)
+                return -ENOMEM;
+        usbother_base = usb_base + MX5_USBOTHER_REGS_OFFSET;
+
+        /* The clock for the USBH1 ULPI port will come externally from the PHY. */
+        v = __raw_readl(usbother_base + MX51_USB_CTRL_1_OFFSET);
+        __raw_writel(v | MX51_USB_CTRL_UH1_EXT_CLK_EN, usbother_base + MX51_USB_CTRL_1_OFFSET);
+        iounmap(usb_base);
+
+        mdelay(10);
+
+        return mx51_initialize_usb_hw(1, MXC_EHCI_POWER_PINS_ENABLED |
+                        MXC_EHCI_ITC_NO_THRESHOLD);
+}
+
+static struct mxc_usbh_platform_data dr_utmi_config = {
+        .init           = initialize_otg_port,
+        .portsc = MXC_EHCI_UTMI_16BIT,
+};
+
+static struct fsl_usb2_platform_data usb_pdata = {
+        .operating_mode = FSL_USB2_DR_DEVICE,
+        .phy_mode       = FSL_USB2_PHY_UTMI_WIDE,
+};
+
+static struct mxc_usbh_platform_data usbh1_config = {
+        .init           = initialize_usbh1_port,
+        .portsc = MXC_EHCI_MODE_ULPI,
+};
+
+static int otg_mode_host;
+
+static int __init babbage_otg_mode(char *options)
+{
+        if (!strcmp(options, "host"))
+                otg_mode_host = 1;
+        else if (!strcmp(options, "device"))
+                otg_mode_host = 0;
+        else
+                pr_info("otg_mode neither \"host\" nor \"device\". "
+                        "Defaulting to device\n");
+        return 0;
+}
+__setup("otg_mode=", babbage_otg_mode);
+
+static struct spi_board_info mx51_babbage_spi_board_info[] __initdata = {
+        {
+                .modalias = "mtd_dataflash",
+                .max_speed_hz = 25000000,
+                .bus_num = 0,
+                .chip_select = 1,
+                .mode = SPI_MODE_0,
+                .platform_data = NULL,
+        },
+};
+
+static int mx51_babbage_spi_cs[] = {
+        BABBAGE_ECSPI1_CS0,
+        BABBAGE_ECSPI1_CS1,
+};
+
+static const struct spi_imx_master mx51_babbage_spi_pdata __initconst = {
+        .chipselect     = mx51_babbage_spi_cs,
+        .num_chipselect = ARRAY_SIZE(mx51_babbage_spi_cs),
+};
+
+static const struct esdhc_platform_data mx51_babbage_sd1_data __initconst = {
+        .cd_type = ESDHC_CD_CONTROLLER,
+        .wp_type = ESDHC_WP_CONTROLLER,
+};
+
+static const struct esdhc_platform_data mx51_babbage_sd2_data __initconst = {
+        .cd_gpio = BABBAGE_SD2_CD,
+        .wp_gpio = BABBAGE_SD2_WP,
+        .cd_type = ESDHC_CD_GPIO,
+        .wp_type = ESDHC_WP_GPIO,
+};
+
+/*
+ * Board specific initialization.
+ */
+static void __init mx51_babbage_init(void)
+{
+        iomux_v3_cfg_t usbh1stp = MX51_PAD_USBH1_STP__USBH1_STP;
+        iomux_v3_cfg_t power_key = _MX51_PAD_EIM_A27__GPIO2_21 |
+                MUX_PAD_CTRL(PAD_CTL_SRE_FAST | PAD_CTL_DSE_HIGH | PAD_CTL_PUS_100K_UP);
+
+        imx51_soc_init();
+
+#if defined(CONFIG_CPU_FREQ_IMX)
+        get_cpu_op = mx51_get_cpu_op;
+#endif
+        mxc_iomux_v3_setup_multiple_pads(mx51babbage_pads,
+                                        ARRAY_SIZE(mx51babbage_pads));
+
+        imx51_add_imx_uart(0, &uart_pdata);
+        imx51_add_imx_uart(1, NULL);
+        imx51_add_imx_uart(2, &uart_pdata);
+
+        babbage_fec_reset();
+        imx51_add_fec(NULL);
+
+        /* Set the PAD settings for the pwr key. */
+        mxc_iomux_v3_setup_pad(power_key);
+        imx_add_gpio_keys(&imx_button_data);
+
+        imx51_add_imx_i2c(0, &babbage_i2c_data);
+        imx51_add_imx_i2c(1, &babbage_i2c_data);
+        mxc_register_device(&mxc_hsi2c_device, &babbage_hsi2c_data);
+
+        if (otg_mode_host)
+                mxc_register_device(&mxc_usbdr_host_device, &dr_utmi_config);
+        else {
+                initialize_otg_port(NULL);
+                mxc_register_device(&mxc_usbdr_udc_device, &usb_pdata);
+        }
+
+        gpio_usbh1_active();
+        mxc_register_device(&mxc_usbh1_device, &usbh1_config);
+        /* setback USBH1_STP to be function */
+        mxc_iomux_v3_setup_pad(usbh1stp);
+        babbage_usbhub_reset();
+
+        imx51_add_sdhci_esdhc_imx(0, &mx51_babbage_sd1_data);
+        imx51_add_sdhci_esdhc_imx(1, &mx51_babbage_sd2_data);
+
+        spi_register_board_info(mx51_babbage_spi_board_info,
+                ARRAY_SIZE(mx51_babbage_spi_board_info));
+        imx51_add_ecspi(0, &mx51_babbage_spi_pdata);
+        imx51_add_imx2_wdt(0, NULL);
+}
+
+static void __init mx51_babbage_timer_init(void)
+{
+        mx51_clocks_init(32768, 24000000, 22579200, 0);
+}
+
+static struct sys_timer mx51_babbage_timer = {
+        .init = mx51_babbage_timer_init,
+};
+
+MACHINE_START(MX51_BABBAGE, "Freescale MX51 Babbage Board")
+        /* Maintainer: Amit Kucheria <amit.kucheria@canonical.com> */
+        .boot_params = MX51_PHYS_OFFSET + 0x100,
+        .map_io = mx51_map_io,
+        .init_early = imx51_init_early,
+        .init_irq = mx51_init_irq,
+        .timer = &mx51_babbage_timer,
+        .init_machine = mx51_babbage_init,
+MACHINE_END