1 /* 2 * File: include/asm-blackfin/mach-common/clocks.h 3 * Based on: include/asm-blackfin/mach-bf537/bf537.h 4 * Author: Robin Getz <rgetz@blackfin.uclinux.org> 5 * 6 * Created: 25Jul07 7 * Description: Common Clock definitions for various kernel files 8 * 9 * Modified: 10 * Copyright 2004-2007 Analog Devices Inc. 11 * 12 * Bugs: Enter bugs at http://blackfin.uclinux.org/ 13 * 14 * This program is free software; you can redistribute it and/or modify 15 * it under the terms of the GNU General Public License as published by 16 * the Free Software Foundation; either version 2 of the License, or 17 * (at your option) any later version. 18 * 19 * This program is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 * 24 * You should have received a copy of the GNU General Public License 25 * along with this program; if not, see the file COPYING, or write 26 * to the Free Software Foundation, Inc., 27 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 28 */ 29 30 #ifndef _BFIN_CLOCKS_H 31 #define _BFIN_CLOCKS_H 32 33 #ifdef CONFIG_CCLK_DIV_1 34 # define CONFIG_CCLK_ACT_DIV CCLK_DIV1 35 # define CONFIG_CCLK_DIV 1 36 #endif 37 38 #ifdef CONFIG_CCLK_DIV_2 39 # define CONFIG_CCLK_ACT_DIV CCLK_DIV2 40 # define CONFIG_CCLK_DIV 2 41 #endif 42 43 #ifdef CONFIG_CCLK_DIV_4 44 # define CONFIG_CCLK_ACT_DIV CCLK_DIV4 45 # define CONFIG_CCLK_DIV 4 46 #endif 47 48 #ifdef CONFIG_CCLK_DIV_8 49 # define CONFIG_CCLK_ACT_DIV CCLK_DIV8 50 # define CONFIG_CCLK_DIV 8 51 #endif 52 53 #ifndef CONFIG_PLL_BYPASS 54 # ifndef CONFIG_CLKIN_HALF 55 # define CONFIG_VCO_HZ (CONFIG_CLKIN_HZ * CONFIG_VCO_MULT) 56 # else 57 # define CONFIG_VCO_HZ ((CONFIG_CLKIN_HZ * CONFIG_VCO_MULT)/2) 58 # endif 59 60 # define CONFIG_CCLK_HZ (CONFIG_VCO_HZ/CONFIG_CCLK_DIV) 61 # define CONFIG_SCLK_HZ (CONFIG_VCO_HZ/CONFIG_SCLK_DIV) 62 63 #else 64 # define CONFIG_VCO_HZ (CONFIG_CLKIN_HZ) 65 # define CONFIG_CCLK_HZ (CONFIG_CLKIN_HZ) 66 # define CONFIG_SCLK_HZ (CONFIG_CLKIN_HZ) 67 # define CONFIG_VCO_MULT 0 68 #endif 69 70 #endif 71