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git.ipfire.org Git - people/ms/u-boot.git/blob - drivers/usb/host/ohci-at91.c
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) || defined(CONFIG_SAMA5D3)
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. */
58 writel(1 << (ATMEL_ID_UHP
- 32), &pmc
->pcer1
);
60 writel(1 << ATMEL_ID_UHP
, &pmc
->pcer
);
63 #if defined(CONFIG_AT91SAM9261) || defined(CONFIG_AT91SAM9G10)
64 writel(ATMEL_PMC_UHP
| AT91_PMC_HCK0
, &pmc
->scer
);
66 writel(ATMEL_PMC_UHP
, &pmc
->scer
);
72 int usb_cpu_stop(void)
74 at91_pmc_t
*pmc
= (at91_pmc_t
*)ATMEL_BASE_PMC
;
76 /* Disable USB host clock. */
78 writel(1 << (ATMEL_ID_UHP
- 32), &pmc
->pcdr1
);
80 writel(1 << ATMEL_ID_UHP
, &pmc
->pcdr
);
83 #if defined(CONFIG_AT91SAM9261) || defined(CONFIG_AT91SAM9G10)
84 writel(ATMEL_PMC_UHP
| AT91_PMC_HCK0
, &pmc
->scdr
);
86 writel(ATMEL_PMC_UHP
, &pmc
->scdr
);
89 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
90 defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20)
92 writel(0, &pmc
->pllbr
);
93 while ((readl(&pmc
->sr
) & AT91_PMC_LOCKB
) != 0)
95 #elif defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45) || \
96 defined(CONFIG_AT91SAM9X5) || defined(CONFIG_SAMA5D3)
98 writel(readl(&pmc
->uckr
) & (~AT91_PMC_UPLLEN
), &pmc
->uckr
);
99 while ((readl(&pmc
->sr
) & AT91_PMC_LOCKU
) == AT91_PMC_LOCKU
)
106 int usb_cpu_init_fail(void)
108 return usb_cpu_stop();
111 #endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */