3 * DENX Software Engineering <mk@denx.de>
5 * SPDX-License-Identifier: GPL-2.0+
10 #if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)
13 #include <asm/arch/hardware.h>
14 #include <asm/arch/at91_pmc.h>
15 #include <asm/arch/clk.h>
17 int usb_cpu_init(void)
19 at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC;
21 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
22 defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) || \
23 defined(CONFIG_AT91SAM9261)
25 writel(get_pllb_init(), &pmc->pllbr);
26 while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != AT91_PMC_LOCKB)
28 #elif defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45) || \
29 defined(CONFIG_AT91SAM9X5) || defined(CONFIG_SAMA5D3)
31 writel(readl(&pmc->uckr) | AT91_PMC_UPLLEN | AT91_PMC_BIASEN,
33 while ((readl(&pmc->sr) & AT91_PMC_LOCKU) != AT91_PMC_LOCKU)
36 /* Select PLLA as input clock of OHCI */
37 writel(AT91_PMC_USBS_USB_UPLL | AT91_PMC_USBDIV_10, &pmc->usb);
40 /* Enable USB host clock. */
42 writel(1 << (ATMEL_ID_UHP - 32), &pmc->pcer1);
44 writel(1 << ATMEL_ID_UHP, &pmc->pcer);
47 #if defined(CONFIG_AT91SAM9261) || defined(CONFIG_AT91SAM9G10)
48 writel(ATMEL_PMC_UHP | AT91_PMC_HCK0, &pmc->scer);
50 writel(ATMEL_PMC_UHP, &pmc->scer);
56 int usb_cpu_stop(void)
58 at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC;
60 /* Disable USB host clock. */
62 writel(1 << (ATMEL_ID_UHP - 32), &pmc->pcdr1);
64 writel(1 << ATMEL_ID_UHP, &pmc->pcdr);
67 #if defined(CONFIG_AT91SAM9261) || defined(CONFIG_AT91SAM9G10)
68 writel(ATMEL_PMC_UHP | AT91_PMC_HCK0, &pmc->scdr);
70 writel(ATMEL_PMC_UHP, &pmc->scdr);
73 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
74 defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20)
76 writel(0, &pmc->pllbr);
77 while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != 0)
79 #elif defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45) || \
80 defined(CONFIG_AT91SAM9X5) || defined(CONFIG_SAMA5D3)
82 writel(readl(&pmc->uckr) & (~AT91_PMC_UPLLEN), &pmc->uckr);
83 while ((readl(&pmc->sr) & AT91_PMC_LOCKU) == AT91_PMC_LOCKU)
90 int usb_cpu_init_fail(void)
92 return usb_cpu_stop();
95 #endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */