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/*
* (C) Copyright 2006
* DENX Software Engineering <mk@denx.de>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#if defined(CONFIG_USB_OHCI_NEW) && \
defined(CONFIG_SYS_USB_OHCI_CPU_INIT) && \
defined(CONFIG_S3C24X0)
#include <asm/arch/s3c24x0_cpu.h>
#include <asm/io.h>
int usb_cpu_init(void)
{
struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio();
/*
* Set the 48 MHz UPLL clocking. Values are taken from
* "PLL value selection guide", 6-23, s3c2400_UM.pdf.
*/
writel((40 << 12) + (1 << 4) + 2, &clk_power->UPLLCON);
/* 1 = use pads related USB for USB host */
writel(readl(&gpio->MISCCR) | 0x8, &gpio->MISCCR);
/*
* Enable USB host clock.
*/
writel(readl(&clk_power->CLKCON) | (1 << 4), &clk_power->CLKCON);
return 0;
}
int usb_cpu_stop(void)
{
struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
/* may not want to do this */
writel(readl(&clk_power->CLKCON) & ~(1 << 4), &clk_power->CLKCON);
return 0;
}
int usb_cpu_init_fail(void)
{
struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
writel(readl(&clk_power->CLKCON) & ~(1 << 4), &clk_power->CLKCON);
return 0;
}
#endif /* defined(CONFIG_USB_OHCI_NEW) && \
defined(CONFIG_SYS_USB_OHCI_CPU_INIT) && \
defined(CONFIG_S3C24X0) */
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