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Linux/arch/arm/include/asm/hardware/icst.h

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  1 /*
  2  *  arch/arm/include/asm/hardware/icst.h
  3  *
  4  *  Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved.
  5  *
  6  * This program is free software; you can redistribute it and/or modify
  7  * it under the terms of the GNU General Public License version 2 as
  8  * published by the Free Software Foundation.
  9  *
 10  *  Support functions for calculating clocks/divisors for the ICST
 11  *  clock generators.  See http://www.idt.com/ for more information
 12  *  on these devices.
 13  */
 14 #ifndef ASMARM_HARDWARE_ICST_H
 15 #define ASMARM_HARDWARE_ICST_H
 16 
 17 struct icst_params {
 18         unsigned long   ref;
 19         unsigned long   vco_max;        /* inclusive */
 20         unsigned long   vco_min;        /* exclusive */
 21         unsigned short  vd_min;         /* inclusive */
 22         unsigned short  vd_max;         /* inclusive */
 23         unsigned char   rd_min;         /* inclusive */
 24         unsigned char   rd_max;         /* inclusive */
 25         const unsigned char *s2div;     /* chip specific s2div array */
 26         const unsigned char *idx2s;     /* chip specific idx2s array */
 27 };
 28 
 29 struct icst_vco {
 30         unsigned short  v;
 31         unsigned char   r;
 32         unsigned char   s;
 33 };
 34 
 35 unsigned long icst_hz(const struct icst_params *p, struct icst_vco vco);
 36 struct icst_vco icst_hz_to_vco(const struct icst_params *p, unsigned long freq);
 37 
 38 /*
 39  * ICST307 VCO frequency must be between 6MHz and 200MHz (3.3 or 5V).
 40  * This frequency is pre-output divider.
 41  */
 42 #define ICST307_VCO_MIN 6000000
 43 #define ICST307_VCO_MAX 200000000
 44 
 45 extern const unsigned char icst307_s2div[];
 46 extern const unsigned char icst307_idx2s[];
 47 
 48 /*
 49  * ICST525 VCO frequency must be between 10MHz and 200MHz (3V) or 320MHz (5V).
 50  * This frequency is pre-output divider.
 51  */
 52 #define ICST525_VCO_MIN         10000000
 53 #define ICST525_VCO_MAX_3V      200000000
 54 #define ICST525_VCO_MAX_5V      320000000
 55 
 56 extern const unsigned char icst525_s2div[];
 57 extern const unsigned char icst525_idx2s[];
 58 
 59 #endif
 60 

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