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Commit 525d75b3 authored by Igor Grinberg's avatar Igor Grinberg Committed by Tony Lindgren
Browse files

omap3: cm-t3517: add support for usb host



add support for hsusb host ports 1, 2 and on-module usb hub.

Signed-off-by: default avatarIgor Grinberg <grinberg@compulab.co.il>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 46893a56
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+50 −0
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/leds.h>
#include <linux/rtc-v3020.h>
@@ -36,6 +37,7 @@
#include <plat/board.h>
#include <plat/common.h>
#include <plat/control.h>
#include <plat/usb.h>

#include "mux.h"

@@ -100,6 +102,47 @@ static void __init cm_t3517_init_rtc(void)
static inline void cm_t3517_init_rtc(void) {}
#endif

#if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_EHCI_HCD_MODULE)
#define HSUSB1_RESET_GPIO	(146)
#define HSUSB2_RESET_GPIO	(147)
#define USB_HUB_RESET_GPIO	(152)

static struct ehci_hcd_omap_platform_data cm_t3517_ehci_pdata __initdata = {
	.port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
	.port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
	.port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,

	.phy_reset  = true,
	.reset_gpio_port[0]  = HSUSB1_RESET_GPIO,
	.reset_gpio_port[1]  = HSUSB2_RESET_GPIO,
	.reset_gpio_port[2]  = -EINVAL,
};

static int cm_t3517_init_usbh(void)
{
	int err;

	err = gpio_request(USB_HUB_RESET_GPIO, "usb hub rst");
	if (err) {
		pr_err("CM-T3517: usb hub rst gpio request failed: %d\n", err);
	} else {
		gpio_direction_output(USB_HUB_RESET_GPIO, 0);
		udelay(10);
		gpio_set_value(USB_HUB_RESET_GPIO, 1);
		msleep(1);
	}

	usb_ehci_init(&cm_t3517_ehci_pdata);

	return 0;
}
#else
static inline int cm_t3517_init_usbh(void)
{
	return 0;
}
#endif

static struct omap_board_config_kernel cm_t3517_config[] __initdata = {
};

@@ -121,6 +164,12 @@ static struct omap_board_mux board_mux[] __initdata = {
	OMAP3_MUX(MCBSP4_DX, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
	OMAP3_MUX(MCBSP_CLKS, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
	OMAP3_MUX(UART3_CTS_RCTX, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
	/* HSUSB1 RESET */
	OMAP3_MUX(UART2_TX, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
	/* HSUSB2 RESET */
	OMAP3_MUX(UART2_RX, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
	/* CM-T3517 USB HUB nRESET */
	OMAP3_MUX(MCBSP4_CLKX, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),

	{ .reg_offset = OMAP_MUX_TERMINATOR },
};
@@ -131,6 +180,7 @@ static void __init cm_t3517_init(void)
	omap_serial_init();
	cm_t3517_init_leds();
	cm_t3517_init_rtc();
	cm_t3517_init_usbh();
}

MACHINE_START(CM_T3517, "Compulab CM-T3517")