1 /* 2 * (C) Copyright 2006 3 * 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 #ifndef CONFIG_AT91_LEGACY 29 #define CONFIG_AT91_LEGACY 30 #warning Please update to use C structur SoC access ! 31 #endif 32 33 #include <asm/arch/hardware.h> 34 #include <asm/arch/io.h> 35 #include <asm/arch/at91_pmc.h> 36 #include <asm/arch/clk.h> 37 38 int usb_cpu_init(void) 39 { 40 41 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \ 42 defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) || \ 43 defined(CONFIG_AT91SAM9261) 44 /* Enable PLLB */ 45 at91_sys_write(AT91_CKGR_PLLBR, get_pllb_init()); 46 while ((at91_sys_read(AT91_PMC_SR) & AT91_PMC_LOCKB) != AT91_PMC_LOCKB) 47 ; 48 #endif 49 50 /* Enable USB host clock. */ 51 at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_UHP); 52 #ifdef CONFIG_AT91SAM9261 53 at91_sys_write(AT91_PMC_SCER, AT91_PMC_UHP | AT91_PMC_HCK0); 54 #else 55 at91_sys_write(AT91_PMC_SCER, AT91_PMC_UHP); 56 #endif 57 58 return 0; 59 } 60 61 int usb_cpu_stop(void) 62 { 63 /* Disable USB host clock. */ 64 at91_sys_write(AT91_PMC_PCDR, 1 << AT91_ID_UHP); 65 #ifdef CONFIG_AT91SAM9261 66 at91_sys_write(AT91_PMC_SCDR, AT91_PMC_UHP | AT91_PMC_HCK0); 67 #else 68 at91_sys_write(AT91_PMC_SCDR, AT91_PMC_UHP); 69 #endif 70 71 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \ 72 defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) 73 /* Disable PLLB */ 74 at91_sys_write(AT91_CKGR_PLLBR, 0); 75 while ((at91_sys_read(AT91_PMC_SR) & AT91_PMC_LOCKB) != 0) 76 ; 77 #endif 78 79 return 0; 80 } 81 82 int usb_cpu_init_fail(void) 83 { 84 return usb_cpu_stop(); 85 } 86 87 #endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */ 88