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faa14babd7
This patch corrects the missing PLLB initialization in usb_cpu_init() for AT91SAM9261. Because of the missing PLLB initialization, the USB support for all AT91SAM9261 based boards will work only if the PLLB is configured by a precedent bootloader. Signed-off-by: Ilko Iliev <iliev@ronetix.at> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Remy Bohmer <linux@bohmer.net>
82 lines
2.3 KiB
C
82 lines
2.3 KiB
C
/*
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* (C) Copyright 2006
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* DENX Software Engineering <mk@denx.de>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)
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#include <asm/arch/hardware.h>
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#include <asm/arch/io.h>
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#include <asm/arch/at91_pmc.h>
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#include <asm/arch/clk.h>
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int usb_cpu_init(void)
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{
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#if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
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defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) || \
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defined(CONFIG_AT91SAM9261)
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/* Enable PLLB */
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at91_sys_write(AT91_CKGR_PLLBR, get_pllb_init());
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while ((at91_sys_read(AT91_PMC_SR) & AT91_PMC_LOCKB) != AT91_PMC_LOCKB)
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;
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#endif
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/* Enable USB host clock. */
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at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_UHP);
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#ifdef CONFIG_AT91SAM9261
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at91_sys_write(AT91_PMC_SCER, AT91_PMC_UHP | AT91_PMC_HCK0);
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#else
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at91_sys_write(AT91_PMC_SCER, AT91_PMC_UHP);
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#endif
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return 0;
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}
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int usb_cpu_stop(void)
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{
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/* Disable USB host clock. */
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at91_sys_write(AT91_PMC_PCDR, 1 << AT91_ID_UHP);
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#ifdef CONFIG_AT91SAM9261
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at91_sys_write(AT91_PMC_SCDR, AT91_PMC_UHP | AT91_PMC_HCK0);
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#else
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at91_sys_write(AT91_PMC_SCDR, AT91_PMC_UHP);
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#endif
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#if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
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defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20)
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/* Disable PLLB */
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at91_sys_write(AT91_CKGR_PLLBR, 0);
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while ((at91_sys_read(AT91_PMC_SR) & AT91_PMC_LOCKB) != 0)
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;
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#endif
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return 0;
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}
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int usb_cpu_init_fail(void)
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{
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return usb_cpu_stop();
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}
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#endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */
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