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Commit 840b9296 authored by Srinath's avatar Srinath Committed by Tony Lindgren
Browse files

arm: omap: craneboard: Add USB EHCI support 

AM3517/05 Craneboard has one EHCI interface on board using port1.

GPIO35 is used as power enable.
GPIO38 is used as port1 PHY reset.

History:
http://marc.info/?l=linux-omap&w=2&r=1&s=Craneboard%253A%2BAdd%2BUSB%2BEHCI%2Bsupport&q=b



Signed-off-by: default avatarSrinath <srinath@mistralsolutions.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 0b50c691

arch/arm/mach-omap2/board-am3517crane.c

+48 −0
Original line number Original line Diff line number Diff line
@@ -19,6 +19,7 @@ 




#include <linux/kernel.h>

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/init.h>

#include <linux/gpio.h>





#include <mach/hardware.h>

#include <mach/hardware.h>

#include <asm/mach-types.h>

#include <asm/mach-types.h>
@@ -27,8 +28,14 @@ 




#include <plat/board.h>

#include <plat/board.h>

#include <plat/common.h>

#include <plat/common.h>

#include <plat/usb.h>





#include "mux.h"

#include "mux.h"

#include "control.h"



#define GPIO_USB_POWER		35

#define GPIO_USB_NRESET		38







/* Board initialization */

/* Board initialization */

static struct omap_board_config_kernel am3517_crane_config[] __initdata = {

static struct omap_board_config_kernel am3517_crane_config[] __initdata = {
@@ -52,10 +59,51 @@ static void __init am3517_crane_init_irq(void) 
	omap_init_irq();

	omap_init_irq();

}

}





static struct ehci_hcd_omap_platform_data ehci_pdata __initdata = {

	.port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,

	.port_mode[1] = EHCI_HCD_OMAP_MODE_UNKNOWN,

	.port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,



	.phy_reset  = true,

	.reset_gpio_port[0]  = GPIO_USB_NRESET,

	.reset_gpio_port[1]  = -EINVAL,

	.reset_gpio_port[2]  = -EINVAL

};



static void __init am3517_crane_init(void)

static void __init am3517_crane_init(void)

{

{

	int ret;



	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);

	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);

	omap_serial_init();

	omap_serial_init();



	/* Configure GPIO for EHCI port */

	if (omap_mux_init_gpio(GPIO_USB_NRESET, OMAP_PIN_OUTPUT)) {

		pr_err("Can not configure mux for GPIO_USB_NRESET %d\n",

			GPIO_USB_NRESET);

		return;

	}



	if (omap_mux_init_gpio(GPIO_USB_POWER, OMAP_PIN_OUTPUT)) {

		pr_err("Can not configure mux for GPIO_USB_POWER %d\n",

			GPIO_USB_POWER);

		return;

	}



	ret = gpio_request(GPIO_USB_POWER, "usb_ehci_enable");

	if (ret < 0) {

		pr_err("Can not request GPIO %d\n", GPIO_USB_POWER);

		return;

	}



	ret = gpio_direction_output(GPIO_USB_POWER, 1);

	if (ret < 0) {

		gpio_free(GPIO_USB_POWER);

		pr_err("Unable to initialize EHCI power\n");

		return;

	}



	usb_ehci_init(&ehci_pdata);

}

}





MACHINE_START(CRANEBOARD, "AM3517/05 CRANEBOARD")

MACHINE_START(CRANEBOARD, "AM3517/05 CRANEBOARD")