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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)
#include <asm/io.h>
#include <asm/arch/hardware.h>
#include <asm/arch/at91_pmc.h>
#include <asm/arch/clk.h>
int usb_cpu_init(void)
{
at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC;
#if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) || \
defined(CONFIG_AT91SAM9261)
/* Enable PLLB */
writel(get_pllb_init(), &pmc->pllbr);
while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != AT91_PMC_LOCKB)
;
#elif defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45)
/* Enable UPLL */
writel(readl(&pmc->uckr) | AT91_PMC_UPLLEN | AT91_PMC_BIASEN,
&pmc->uckr);
while ((readl(&pmc->sr) & AT91_PMC_LOCKU) != AT91_PMC_LOCKU)
;
/* Select PLLA as input clock of OHCI */
writel(AT91_PMC_USBS_USB_UPLL | AT91_PMC_USBDIV_10, &pmc->usb);
#endif
/* Enable USB host clock. */
writel(1 << ATMEL_ID_UHP, &pmc->pcer);
#ifdef CONFIG_AT91SAM9261
writel(ATMEL_PMC_UHP | AT91_PMC_HCK0, &pmc->scer);
#else
writel(ATMEL_PMC_UHP, &pmc->scer);
#endif
return 0;
}
int usb_cpu_stop(void)
{
at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC;
/* Disable USB host clock. */
writel(1 << ATMEL_ID_UHP, &pmc->pcdr);
#ifdef CONFIG_AT91SAM9261
writel(ATMEL_PMC_UHP | AT91_PMC_HCK0, &pmc->scdr);
#else
writel(ATMEL_PMC_UHP, &pmc->scdr);
#endif
#if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20)
/* Disable PLLB */
writel(0, &pmc->pllbr);
while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != 0)
;
#elif defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45)
/* Disable UPLL */
writel(readl(&pmc->uckr) & (~AT91_PMC_UPLLEN), &pmc->uckr);
while ((readl(&pmc->sr) & AT91_PMC_LOCKU) == AT91_PMC_LOCKU)
;
#endif
return 0;
}
int usb_cpu_init_fail(void)
{
return usb_cpu_stop();
}
#endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */
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