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-rw-r--r--arch/blackfin/include/asm/clocks.h70
1 files changed, 70 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/clocks.h b/arch/blackfin/include/asm/clocks.h
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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