| Chandan Nath | 4ba3345 | 2011-10-14 02:58:23 +0000 | [diff] [blame^] | 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_ */ |