1 /* 2 * (C) Copyright 2006 3 * DENX Software Engineering <mk@denx.de> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 10 #if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) 11 12 #include <asm/io.h> 13 #include <asm/arch/hardware.h> 14 #include <asm/arch/at91_pmc.h> 15 #include <asm/arch/clk.h> 16 17 int usb_cpu_init(void) 18 { 19 at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC; 20 21 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \ 22 defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) || \ 23 defined(CONFIG_AT91SAM9261) 24 /* Enable PLLB */ 25 writel(get_pllb_init(), &pmc->pllbr); 26 while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != AT91_PMC_LOCKB) 27 ; 28 #elif defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45) || \ 29 defined(CONFIG_AT91SAM9X5) || defined(CONFIG_SAMA5D3) 30 /* Enable UPLL */ 31 writel(readl(&pmc->uckr) | AT91_PMC_UPLLEN | AT91_PMC_BIASEN, 32 &pmc->uckr); 33 while ((readl(&pmc->sr) & AT91_PMC_LOCKU) != AT91_PMC_LOCKU) 34 ; 35 36 /* Select PLLA as input clock of OHCI */ 37 writel(AT91_PMC_USBS_USB_UPLL | AT91_PMC_USBDIV_10, &pmc->usb); 38 #endif 39 40 /* Enable USB host clock. */ 41 #ifdef CONFIG_SAMA5D3 42 writel(1 << (ATMEL_ID_UHP - 32), &pmc->pcer1); 43 #else 44 writel(1 << ATMEL_ID_UHP, &pmc->pcer); 45 #endif 46 47 #if defined(CONFIG_AT91SAM9261) || defined(CONFIG_AT91SAM9G10) 48 writel(ATMEL_PMC_UHP | AT91_PMC_HCK0, &pmc->scer); 49 #else 50 writel(ATMEL_PMC_UHP, &pmc->scer); 51 #endif 52 53 return 0; 54 } 55 56 int usb_cpu_stop(void) 57 { 58 at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC; 59 60 /* Disable USB host clock. */ 61 #ifdef CONFIG_SAMA5D3 62 writel(1 << (ATMEL_ID_UHP - 32), &pmc->pcdr1); 63 #else 64 writel(1 << ATMEL_ID_UHP, &pmc->pcdr); 65 #endif 66 67 #if defined(CONFIG_AT91SAM9261) || defined(CONFIG_AT91SAM9G10) 68 writel(ATMEL_PMC_UHP | AT91_PMC_HCK0, &pmc->scdr); 69 #else 70 writel(ATMEL_PMC_UHP, &pmc->scdr); 71 #endif 72 73 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \ 74 defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) 75 /* Disable PLLB */ 76 writel(0, &pmc->pllbr); 77 while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != 0) 78 ; 79 #elif defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45) || \ 80 defined(CONFIG_AT91SAM9X5) || defined(CONFIG_SAMA5D3) 81 /* Disable UPLL */ 82 writel(readl(&pmc->uckr) & (~AT91_PMC_UPLLEN), &pmc->uckr); 83 while ((readl(&pmc->sr) & AT91_PMC_LOCKU) == AT91_PMC_LOCKU) 84 ; 85 #endif 86 87 return 0; 88 } 89 90 int usb_cpu_init_fail(void) 91 { 92 return usb_cpu_stop(); 93 } 94 95 #endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */ 96