3 * DENX Software Engineering <mk@denx.de>
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
26 #if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)
28 #include <asm/arch/hardware.h>
29 #include <asm/arch/io.h>
30 #include <asm/arch/at91_pmc.h>
31 #include <asm/arch/clk.h>
33 int usb_cpu_init(void)
36 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
37 defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20)
39 at91_sys_write(AT91_CKGR_PLLBR, get_pllb_init());
40 while ((at91_sys_read(AT91_PMC_SR) & AT91_PMC_LOCKB) != AT91_PMC_LOCKB)
44 /* Enable USB host clock. */
45 at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_UHP);
46 #ifdef CONFIG_AT91SAM9261
47 at91_sys_write(AT91_PMC_SCER, AT91_PMC_UHP | AT91_PMC_HCK0);
49 at91_sys_write(AT91_PMC_SCER, AT91_PMC_UHP);
55 int usb_cpu_stop(void)
57 /* Disable USB host clock. */
58 at91_sys_write(AT91_PMC_PCDR, 1 << AT91_ID_UHP);
59 #ifdef CONFIG_AT91SAM9261
60 at91_sys_write(AT91_PMC_SCDR, AT91_PMC_UHP | AT91_PMC_HCK0);
62 at91_sys_write(AT91_PMC_SCDR, AT91_PMC_UHP);
65 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
66 defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20)
68 at91_sys_write(AT91_CKGR_PLLBR, 0);
69 while ((at91_sys_read(AT91_PMC_SR) & AT91_PMC_LOCKB) != 0)
76 int usb_cpu_init_fail(void)
78 return usb_cpu_stop();
81 #endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */