+++ /dev/null
-/*
- * Copyright 2009 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/gpio.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/fsl_devices.h>
-
-#include <mach/common.h>
-#include <mach/hardware.h>
-#include <mach/imx-uart.h>
-#include <mach/iomux-mx51.h>
-#include <mach/mxc_ehci.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.h"
-
-#define BABBAGE_USB_HUB_RESET (0*32 + 7) /* GPIO_1_7 */
-#define BABBAGE_USBH1_STP (0*32 + 27) /* GPIO_1_27 */
-#define BABBAGE_PHY_RESET (1*32 +5) /* GPIO_2_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 platform_device *devices[] __initdata = {
- &mxc_fec_device,
-};
-
-static struct pad_desc 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,
-
- /* 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_GPIO_1_7__GPIO1_7,
-};
-
-/* Serial ports */
-#if defined(CONFIG_SERIAL_IMX) || defined(CONFIG_SERIAL_IMX_MODULE)
-static struct imxuart_platform_data uart_pdata = {
- .flags = IMXUART_HAVE_RTSCTS,
-};
-
-static inline void mxc_init_imx_uart(void)
-{
- mxc_register_device(&mxc_uart_device0, &uart_pdata);
- mxc_register_device(&mxc_uart_device1, &uart_pdata);
- mxc_register_device(&mxc_uart_device2, &uart_pdata);
-}
-#else /* !SERIAL_IMX */
-static inline void mxc_init_imx_uart(void)
-{
-}
-#endif /* SERIAL_IMX */
-
-static int gpio_usbh1_active(void)
-{
- struct pad_desc usbh1stp_gpio = MX51_PAD_USBH1_STP__GPIO_1_27;
- struct pad_desc phyreset_gpio = MX51_PAD_EIM_D21__GPIO_2_5;
- int ret;
-
- /* Set USBH1_STP to GPIO and toggle it */
- mxc_iomux_v3_setup_pad(&usbh1stp_gpio);
- ret = gpio_request(BABBAGE_USBH1_STP, "usbh1_stp");
-
- if (ret) {
- pr_debug("failed to get MX51_PAD_USBH1_STP__GPIO_1_27: %d\n", ret);
- return ret;
- }
- gpio_direction_output(BABBAGE_USBH1_STP, 0);
- gpio_set_value(BABBAGE_USBH1_STP, 1);
- msleep(100);
- gpio_free(BABBAGE_USBH1_STP);
-
- /* De-assert USB PHY RESETB */
- mxc_iomux_v3_setup_pad(&phyreset_gpio);
- ret = gpio_request(BABBAGE_PHY_RESET, "phy_reset");
-
- if (ret) {
- pr_debug("failed to get MX51_PAD_EIM_D21__GPIO_2_5: %d\n", ret);
- return ret;
- }
- gpio_direction_output(BABBAGE_PHY_RESET, 1);
- return 0;
-}
-
-static inline void babbage_usbhub_reset(void)
-{
- int ret;
-
- /* Bring USB hub out of reset */
- ret = gpio_request(BABBAGE_USB_HUB_RESET, "GPIO1_7");
- if (ret) {
- printk(KERN_ERR"failed to get GPIO_USB_HUB_RESET: %d\n", ret);
- return;
- }
- gpio_direction_output(BABBAGE_USB_HUB_RESET, 0);
-
- /* USB HUB RESET - De-assert USB HUB RESET_N */
- msleep(1);
- gpio_set_value(BABBAGE_USB_HUB_RESET, 0);
- msleep(1);
- gpio_set_value(BABBAGE_USB_HUB_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;
- u32 usbother_base;
-
- usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K);
- 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);
- return 0;
-}
-
-static int initialize_usbh1_port(struct platform_device *pdev)
-{
- u32 v;
- void __iomem *usb_base;
- u32 usbother_base;
-
- usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K);
- 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);
- return 0;
-}
-
-static struct mxc_usbh_platform_data dr_utmi_config = {
- .init = initialize_otg_port,
- .portsc = MXC_EHCI_UTMI_16BIT,
- .flags = MXC_EHCI_INTERNAL_PHY,
-};
-
-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,
- .flags = (MXC_EHCI_POWER_PINS_ENABLED | MXC_EHCI_ITC_NO_THRESHOLD),
-};
-
-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);
-
-/*
- * Board specific initialization.
- */
-static void __init mxc_board_init(void)
-{
- struct pad_desc usbh1stp = MX51_PAD_USBH1_STP__USBH1_STP;
-
- mxc_iomux_v3_setup_multiple_pads(mx51babbage_pads,
- ARRAY_SIZE(mx51babbage_pads));
- mxc_init_imx_uart();
- platform_add_devices(devices, ARRAY_SIZE(devices));
-
- 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();
-}
-
-static void __init mx51_babbage_timer_init(void)
-{
- mx51_clocks_init(32768, 24000000, 22579200, 0);
-}
-
-static struct sys_timer mxc_timer = {
- .init = mx51_babbage_timer_init,
-};
-
-MACHINE_START(MX51_BABBAGE, "Freescale MX51 Babbage Board")
- /* Maintainer: Amit Kucheria <amit.kucheria@canonical.com> */
- .phys_io = MX51_AIPS1_BASE_ADDR,
- .io_pg_offst = ((MX51_AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
- .boot_params = PHYS_OFFSET + 0x100,
- .map_io = mx51_map_io,
- .init_irq = mx51_init_irq,
- .init_machine = mxc_board_init,
- .timer = &mxc_timer,
-MACHINE_END
projects / linux-imx.git / blobdiff