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 #ifdef CONFIG_USB_ATMEL_CLK_SEL_PLLB
23 writel(get_pllb_init(), &pmc->pllbr);
24 while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != AT91_PMC_LOCKB)
26 #ifdef CONFIG_AT91SAM9N12
27 at91_usb_clk_init(AT91_PMC_USBS_USB_PLLB | AT91_PMC_USB_DIV_2);
29 #elif defined(CONFIG_USB_ATMEL_CLK_SEL_UPLL)
30 if (at91_upll_clk_enable())
33 at91_usb_clk_init(AT91_PMC_USBS_USB_UPLL | AT91_PMC_USBDIV_10);
36 at91_periph_clk_enable(ATMEL_ID_UHP);
38 at91_system_clk_enable(ATMEL_PMC_UHP);
39 #if defined(CONFIG_AT91SAM9261) || defined(CONFIG_AT91SAM9G10)
40 at91_system_clk_enable(AT91_PMC_HCK0);
46 int usb_cpu_stop(void)
48 at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC;
50 at91_periph_clk_disable(ATMEL_ID_UHP);
52 at91_system_clk_disable(ATMEL_PMC_UHP);
53 #if defined(CONFIG_AT91SAM9261) || defined(CONFIG_AT91SAM9G10)
54 at91_system_clk_disable(AT91_PMC_HCK0);
57 #ifdef CONFIG_USB_ATMEL_CLK_SEL_PLLB
58 #ifdef CONFIG_AT91SAM9N12
62 writel(0, &pmc->pllbr);
63 while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != 0)
65 #elif defined(CONFIG_USB_ATMEL_CLK_SEL_UPLL)
66 if (at91_upll_clk_disable())
73 int usb_cpu_init_fail(void)
75 return usb_cpu_stop();
78 #endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */