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 #ifndef CONFIG_AT91_LEGACY
29 #define CONFIG_AT91_LEGACY
30 #warning Please update to use C structur SoC access !
33 #include <asm/arch/hardware.h>
34 #include <asm/arch/io.h>
35 #include <asm/arch/at91_pmc.h>
36 #include <asm/arch/clk.h>
38 int usb_cpu_init(void)
41 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
42 defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) || \
43 defined(CONFIG_AT91SAM9261)
45 at91_sys_write(AT91_CKGR_PLLBR, get_pllb_init());
46 while ((at91_sys_read(AT91_PMC_SR) & AT91_PMC_LOCKB) != AT91_PMC_LOCKB)
50 /* Enable USB host clock. */
51 at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_UHP);
52 #ifdef CONFIG_AT91SAM9261
53 at91_sys_write(AT91_PMC_SCER, AT91_PMC_UHP | AT91_PMC_HCK0);
55 at91_sys_write(AT91_PMC_SCER, AT91_PMC_UHP);
61 int usb_cpu_stop(void)
63 /* Disable USB host clock. */
64 at91_sys_write(AT91_PMC_PCDR, 1 << AT91_ID_UHP);
65 #ifdef CONFIG_AT91SAM9261
66 at91_sys_write(AT91_PMC_SCDR, AT91_PMC_UHP | AT91_PMC_HCK0);
68 at91_sys_write(AT91_PMC_SCDR, AT91_PMC_UHP);
71 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
72 defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20)
74 at91_sys_write(AT91_CKGR_PLLBR, 0);
75 while ((at91_sys_read(AT91_PMC_SR) & AT91_PMC_LOCKB) != 0)
82 int usb_cpu_init_fail(void)
84 return usb_cpu_stop();
87 #endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */