board/renesas/draak/draak.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * board/renesas/draak/draak.c
 *     This file is Draak board support.
 *
 * Copyright (C) 2017 Marek Vasut <marek.vasut+renesas@gmail.com>
 */

#include <asm/io.h>
#include <asm/arch/rcar-mstp.h>
#include <asm/arch/renesas.h>

#define HSUSB_MSTP704		BIT(4)	/* HSUSB */

/* HSUSB block registers */
#define HSUSB_REG_LPSTS			0xE6590102
#define HSUSB_REG_LPSTS_SUSPM_NORMAL	BIT(14)
#define HSUSB_REG_UGCTRL2		0xE6590184
#define HSUSB_REG_UGCTRL2_USB0SEL	0x30
#define HSUSB_REG_UGCTRL2_USB0SEL_EHCI	0x10

int board_init(void)
{
	/* USB1 pull-up */
	setbits_le32(PFC_PUEN6, PUEN_USB1_OVC | PUEN_USB1_PWEN);

	/* Configure the HSUSB block */
	mstp_clrbits_le32(SMSTPCR7, SMSTPCR7, HSUSB_MSTP704);
	/* Choice USB0SEL */
	clrsetbits_le32(HSUSB_REG_UGCTRL2, HSUSB_REG_UGCTRL2_USB0SEL,
			HSUSB_REG_UGCTRL2_USB0SEL_EHCI);
	/* low power status */
	setbits_le16(HSUSB_REG_LPSTS, HSUSB_REG_LPSTS_SUSPM_NORMAL);

	return 0;
}