arch/powerpc/cpu/mpc5xxx/usb.c

   1 /*
   2  * (C) Copyright 2007
   3  * Markus Klotzbuecher, DENX Software Engineering <mk@denx.de>
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25
  26 #if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)
  27
  28 #include <mpc5xxx.h>
  29
  30 int usb_cpu_init(void)
  31 {
  32         /* Set the USB Clock                                                 */
  33         *(vu_long *)MPC5XXX_CDM_48_FDC = CONFIG_USB_CLOCK;
  34
  35 #ifdef CONFIG_PSC3_USB /* USB is using the alternate configuration */
  36         /* remove all PSC3 USB bits first before ORing in ours */
  37         *(vu_long *)MPC5XXX_GPS_PORT_CONFIG &= ~0x00804f00;
  38 #else
  39         /* remove all USB bits first before ORing in ours */
  40         *(vu_long *)MPC5XXX_GPS_PORT_CONFIG &= ~0x00807000;
  41 #endif
  42         /* Activate USB port                                                 */
  43         *(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= CONFIG_USB_CONFIG;
  44
  45         return 0;
  46 }
  47
  48 int usb_cpu_stop(void)
  49 {
  50         return 0;
  51 }
  52
  53 int usb_cpu_init_fail(void)
  54 {
  55         return 0;
  56 }
  57
  58 #endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */