1 /* 2 * Copyright (C) 2012 Sughosh Ganu <urwithsughosh@gmail.com> 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 */ 14 15 #include <common.h> 16 17 #include <asm/arch/da8xx-usb.h> 18 19 int usb_cpu_init(void) 20 { 21 /* enable psc for usb2.0 */ 22 lpsc_on(DAVINCI_LPSC_USB20); 23 24 /* enable psc for usb1.0 */ 25 lpsc_on(DAVINCI_LPSC_USB11); 26 27 /* start the on-chip usb phy and its pll */ 28 if (usb_phy_on()) 29 return 0; 30 31 return 1; 32 } 33 34 int usb_cpu_stop(void) 35 { 36 usb_phy_off(); 37 38 /* turn off the usb clock and assert the module reset */ 39 lpsc_disable(DAVINCI_LPSC_USB11); 40 lpsc_disable(DAVINCI_LPSC_USB20); 41 42 return 0; 43 } 44 45 int usb_cpu_init_fail(void) 46 { 47 return usb_cpu_stop(); 48 } 49