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MXC: Add USB OTG (device) for i.MX31 PDK (3DS) board.

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Tested on actual hardware using the g_ether and g_serial gadget drivers.

Signed-off-by: Magnus Lilja <lilja.magnus@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Magnus Lilja 2010-05-14 17:08:29 +02:00 committed by Sascha Hauer
parent 3a47b1a4f1
commit a2ef4562c2
1 changed files with 55 additions and 0 deletions
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55
arch/arm/mach-mx3/mach-mx31_3ds.c
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@ -16,6 +16,7 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/delay.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/clk.h>
@ -26,6 +27,7 @@
#include <linux/mfd/mc13783.h>
#include <linux/spi/spi.h>
#include <linux/regulator/machine.h>
#include <linux/fsl_devices.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
@ -65,6 +67,21 @@ static int mx31_3ds_pins[] = {
MX31_PIN_CSPI2_SS2__SS2, /*CS for MC13783 */
/* MC13783 IRQ */
IOMUX_MODE(MX31_PIN_GPIO1_3, IOMUX_CONFIG_GPIO),
/* USB OTG reset */
IOMUX_MODE(MX31_PIN_USB_PWR, IOMUX_CONFIG_GPIO),
/* USB OTG */
MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
MX31_PIN_USBOTG_CLK__USBOTG_CLK,
MX31_PIN_USBOTG_DIR__USBOTG_DIR,
MX31_PIN_USBOTG_NXT__USBOTG_NXT,
MX31_PIN_USBOTG_STP__USBOTG_STP,
};
/* Regulators */
@ -126,6 +143,41 @@ static struct mxc_nand_platform_data imx31_3ds_nand_flash_pdata = {
#endif
};
/*
* USB OTG
*/
#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
#define USBOTG_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_PWR)
static void mx31_3ds_usbotg_init(void)
{
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);
gpio_request(USBOTG_RST_B, "otgusb-reset");
gpio_direction_output(USBOTG_RST_B, 0);
mdelay(1);
gpio_set_value(USBOTG_RST_B, 1);
}
static struct fsl_usb2_platform_data usbotg_pdata = {
.operating_mode = FSL_USB2_DR_DEVICE,
.phy_mode = FSL_USB2_PHY_ULPI,
};
static struct imxuart_platform_data uart_pdata = {
.flags = IMXUART_HAVE_RTSCTS,
};
@ -315,6 +367,9 @@ static void __init mxc_board_init(void)
spi_register_board_info(mx31_3ds_spi_devs,
ARRAY_SIZE(mx31_3ds_spi_devs));
mx31_3ds_usbotg_init();
mxc_register_device(&mxc_otg_udc_device, &usbotg_pdata);
if (!mx31_3ds_init_expio())
platform_device_register(&smsc911x_device);
}