1 /* 2 * clocks_am33xx.h 3 * 4 * AM33xx clock define 5 * 6 * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ 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 19 #ifndef _CLOCKS_AM33XX_H_ 20 #define _CLOCKS_AM33XX_H_ 21 22 #define OSC 24 23 24 /* MAIN PLL Fdll = 550 MHZ, */ 25 #define MPUPLL_M 550 26 #define MPUPLL_N 23 27 #define MPUPLL_M2 1 28 29 /* Core PLL Fdll = 1 GHZ, */ 30 #define COREPLL_M 1000 31 #define COREPLL_N 23 32 33 #define COREPLL_M4 10 /* CORE_CLKOUTM4 = 200 MHZ */ 34 #define COREPLL_M5 8 /* CORE_CLKOUTM5 = 250 MHZ */ 35 #define COREPLL_M6 4 /* CORE_CLKOUTM6 = 500 MHZ */ 36 37 /* 38 * USB PHY clock is 960 MHZ. Since, this comes directly from Fdll, Fdll 39 * frequency needs to be set to 960 MHZ. Hence, 40 * For clkout = 192 MHZ, Fdll = 960 MHZ, divider values are given below 41 */ 42 #define PERPLL_M 960 43 #define PERPLL_N 23 44 #define PERPLL_M2 5 45 46 /* DDR Freq is 266 MHZ for now */ 47 /* Set Fdll = 400 MHZ , Fdll = M * 2 * CLKINP/ N + 1; clkout = Fdll /(2 * M2) */ 48 #define DDRPLL_M 266 49 #define DDRPLL_N 23 50 #define DDRPLL_M2 1 51 52 extern void pll_init(void); 53 extern void enable_emif_clocks(void); 54 55 #endif /* endif _CLOCKS_AM33XX_H_ */ 56