drivers/usb/host/ohci-at91.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2006
   4  * DENX Software Engineering <mk@denx.de>
   5  */
   6
   7 #include <common.h>
   8
   9 #if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)
  10
  11 #include <asm/arch/clk.h>
  12
  13 int usb_cpu_init(void)
  14 {
  15 #ifdef CONFIG_USB_ATMEL_CLK_SEL_PLLB
  16         if (at91_pllb_clk_enable(get_pllb_init()))
  17                 return -1;
  18
  19 #ifdef CONFIG_AT91SAM9N12
  20         at91_usb_clk_init(AT91_PMC_USBS_USB_PLLB | AT91_PMC_USB_DIV_2);
  21 #endif
  22 #elif defined(CONFIG_USB_ATMEL_CLK_SEL_UPLL)
  23         if (at91_upll_clk_enable())
  24                 return -1;
  25
  26         at91_usb_clk_init(AT91_PMC_USBS_USB_UPLL | AT91_PMC_USBDIV_10);
  27 #endif
  28
  29         at91_periph_clk_enable(ATMEL_ID_UHP);
  30
  31         at91_system_clk_enable(ATMEL_PMC_UHP);
  32 #if defined(CONFIG_AT91SAM9261) || defined(CONFIG_AT91SAM9G10)
  33         at91_system_clk_enable(AT91_PMC_HCK0);
  34 #endif
  35
  36         return 0;
  37 }
  38
  39 int usb_cpu_stop(void)
  40 {
  41         at91_periph_clk_disable(ATMEL_ID_UHP);
  42
  43         at91_system_clk_disable(ATMEL_PMC_UHP);
  44 #if defined(CONFIG_AT91SAM9261) || defined(CONFIG_AT91SAM9G10)
  45         at91_system_clk_disable(AT91_PMC_HCK0);
  46 #endif
  47
  48 #ifdef CONFIG_USB_ATMEL_CLK_SEL_PLLB
  49 #ifdef CONFIG_AT91SAM9N12
  50         at91_usb_clk_init(0);
  51 #endif
  52
  53         if (at91_pllb_clk_disable())
  54                 return -1;
  55
  56 #elif defined(CONFIG_USB_ATMEL_CLK_SEL_UPLL)
  57         if (at91_upll_clk_disable())
  58                 return -1;
  59 #endif
  60
  61         return 0;
  62 }
  63
  64 int usb_cpu_init_fail(void)
  65 {
  66         return usb_cpu_stop();
  67 }
  68
  69 #endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */