drivers/usb/host/ohci-da8xx.c

   1 /*
   2  * Copyright (C) 2012 Sughosh Ganu <urwithsughosh@gmail.com>
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8
   9 #include <asm/arch/da8xx-usb.h>
  10
  11 int usb_cpu_init(void)
  12 {
  13         /* enable psc for usb2.0 */
  14         lpsc_on(DAVINCI_LPSC_USB20);
  15
  16         /* enable psc for usb1.0 */
  17         lpsc_on(DAVINCI_LPSC_USB11);
  18
  19         /* start the on-chip usb phy and its pll */
  20         if (usb_phy_on())
  21                 return 0;
  22
  23         return 1;
  24 }
  25
  26 int usb_cpu_stop(void)
  27 {
  28         usb_phy_off();
  29
  30         /* turn off the usb clock and assert the module reset */
  31         lpsc_disable(DAVINCI_LPSC_USB11);
  32         lpsc_disable(DAVINCI_LPSC_USB20);
  33
  34         return 0;
  35 }
  36
  37 int usb_cpu_init_fail(void)
  38 {
  39         return usb_cpu_stop();
  40 }