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)
29 #include <asm/arch/hardware.h>
30 #include <asm/arch/at91_pmc.h>
31 #include <asm/arch/clk.h>
33 int usb_cpu_init(void)
35 at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC;
37 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
38 defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) || \
39 defined(CONFIG_AT91SAM9261)
41 writel(get_pllb_init(), &pmc->pllbr);
42 while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != AT91_PMC_LOCKB)
44 #elif defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45) || \
45 defined(CONFIG_AT91SAM9X5)
47 writel(readl(&pmc->uckr) | AT91_PMC_UPLLEN | AT91_PMC_BIASEN,
49 while ((readl(&pmc->sr) & AT91_PMC_LOCKU) != AT91_PMC_LOCKU)
52 /* Select PLLA as input clock of OHCI */
53 writel(AT91_PMC_USBS_USB_UPLL | AT91_PMC_USBDIV_10, &pmc->usb);
56 /* Enable USB host clock. */
57 writel(1 << ATMEL_ID_UHP, &pmc->pcer);
58 #ifdef CONFIG_AT91SAM9261
59 writel(ATMEL_PMC_UHP | AT91_PMC_HCK0, &pmc->scer);
61 writel(ATMEL_PMC_UHP, &pmc->scer);
67 int usb_cpu_stop(void)
69 at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC;
71 /* Disable USB host clock. */
72 writel(1 << ATMEL_ID_UHP, &pmc->pcdr);
73 #ifdef CONFIG_AT91SAM9261
74 writel(ATMEL_PMC_UHP | AT91_PMC_HCK0, &pmc->scdr);
76 writel(ATMEL_PMC_UHP, &pmc->scdr);
79 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
80 defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20)
82 writel(0, &pmc->pllbr);
83 while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != 0)
85 #elif defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45) || \
86 defined(CONFIG_AT91SAM9X5)
88 writel(readl(&pmc->uckr) & (~AT91_PMC_UPLLEN), &pmc->uckr);
89 while ((readl(&pmc->sr) & AT91_PMC_LOCKU) == AT91_PMC_LOCKU)
96 int usb_cpu_init_fail(void)
98 return usb_cpu_stop();
101 #endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */