git.sur5r.net Git - u-boot/blob - drivers/usb/host/ohci-at91.c

   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/arch/clk.h>
  13
  14 int usb_cpu_init(void)
  15 {
  16 #ifdef CONFIG_USB_ATMEL_CLK_SEL_PLLB
  17         if (at91_pllb_clk_enable(get_pllb_init()))
  18                 return -1;
  19
  20 #ifdef CONFIG_AT91SAM9N12
  21         at91_usb_clk_init(AT91_PMC_USBS_USB_PLLB | AT91_PMC_USB_DIV_2);
  22 #endif
  23 #elif defined(CONFIG_USB_ATMEL_CLK_SEL_UPLL)
  24         if (at91_upll_clk_enable())
  25                 return -1;
  26
  27         at91_usb_clk_init(AT91_PMC_USBS_USB_UPLL | AT91_PMC_USBDIV_10);
  28 #endif
  29
  30         at91_periph_clk_enable(ATMEL_ID_UHP);
  31
  32         at91_system_clk_enable(ATMEL_PMC_UHP);
  33 #if defined(CONFIG_AT91SAM9261) || defined(CONFIG_AT91SAM9G10)
  34         at91_system_clk_enable(AT91_PMC_HCK0);
  35 #endif
  36
  37         return 0;
  38 }
  39
  40 int usb_cpu_stop(void)
  41 {
  42         at91_periph_clk_disable(ATMEL_ID_UHP);
  43
  44         at91_system_clk_disable(ATMEL_PMC_UHP);
  45 #if defined(CONFIG_AT91SAM9261) || defined(CONFIG_AT91SAM9G10)
  46         at91_system_clk_disable(AT91_PMC_HCK0);
  47 #endif
  48
  49 #ifdef CONFIG_USB_ATMEL_CLK_SEL_PLLB
  50 #ifdef CONFIG_AT91SAM9N12
  51         at91_usb_clk_init(0);
  52 #endif
  53
  54         if (at91_pllb_clk_disable())
  55                 return -1;
  56
  57 #elif defined(CONFIG_USB_ATMEL_CLK_SEL_UPLL)
  58         if (at91_upll_clk_disable())
  59                 return -1;
  60 #endif
  61
  62         return 0;
  63 }
  64
  65 int usb_cpu_init_fail(void)
  66 {
  67         return usb_cpu_stop();
  68 }
  69
  70 #endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */