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Commit a2ef4562 authored by Magnus Lilja's avatar Magnus Lilja Committed by Sascha Hauer
Browse files

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



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

Signed-off-by: default avatarMagnus Lilja <lilja.magnus@gmail.com>
Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent 3a47b1a4

arch/arm/mach-mx3/mach-mx31_3ds.c

+55 −0
Original line number Diff line number Diff line
@@ -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);

}