| 1 | /* |
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| 2 | * The authors hereby grant permission to use, copy, modify, distribute, |
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| 3 | * and license this software and its documentation for any purpose, provided |
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| 4 | * that existing copyright notices are retained in all copies and that this |
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| 5 | * notice is included verbatim in any distributions. No written agreement, |
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| 6 | * license, or royalty fee is required for any of the authorized uses. |
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| 7 | * Modifications to this software may be copyrighted by their authors |
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| 8 | * and need not follow the licensing terms described here, provided that |
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| 9 | * the new terms are clearly indicated on the first page of each file where |
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| 10 | * they apply. |
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| 11 | */ |
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| 12 | |
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| 13 | /************************************************************************ |
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| 14 | * |
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| 15 | * pll.h |
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| 16 | * |
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| 17 | * (c) Copyright 2003-2004 Analog Devices, Inc. All rights reserved. |
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| 18 | * |
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| 19 | ************************************************************************/ |
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| 20 | |
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| 21 | #ifndef __ASSEMBLER__ |
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| 22 | #pragma once |
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| 23 | #pragma system_header |
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| 24 | #endif |
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| 25 | |
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| 26 | #ifndef _PLL_H |
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| 27 | #define _PLL_H |
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| 28 | |
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| 29 | #ifdef _MISRA_RULES |
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| 30 | #pragma diag(push) |
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| 31 | #pragma diag(suppress:misra_rule_6_3) |
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| 32 | #endif /* _MISRA_RULES */ |
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| 33 | |
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| 34 | #define NO_STARTUP_SET 0 |
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| 35 | #define MAX_IN_STARTUP 1 |
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| 36 | |
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| 37 | #ifndef __ASSEMBLER__ |
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| 38 | |
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| 39 | enum clkctrl_t { |
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| 40 | /* no modification of PLL rates in CRT startup - default */ |
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| 41 | no_startup_set=NO_STARTUP_SET, |
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| 42 | |
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| 43 | /* CRT startup sets PLL rates to suitable maximum values */ |
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| 44 | max_in_startup=MAX_IN_STARTUP |
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| 45 | }; |
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| 46 | |
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| 47 | /* |
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| 48 | ** Define __clk_ctrl to 1 to cause startup to set PLL rates for maximum |
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| 49 | ** speed performance rates. The default version defined in the runtime- |
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| 50 | ** libraries defines __clk_ctrl to 0 which disables the feature. |
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| 51 | */ |
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| 52 | extern enum clkctrl_t __clk_ctrl; |
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| 53 | |
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| 54 | #ifdef __cplusplus |
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| 55 | extern "C" { |
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| 56 | #endif |
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| 57 | |
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| 58 | #if defined(__ADSPLPBLACKFIN__) |
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| 59 | |
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| 60 | /* Sets SSEL and CSEL bits in PLL_DIV to passed values. |
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| 61 | ** Returns -1 on failure. |
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| 62 | */ |
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| 63 | int pll_set_system_clocks(int _csel, int _ssel); |
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| 64 | |
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| 65 | /* |
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| 66 | ** Sets MSEL and DF bits in PLL_CTL and LOCKCNT in PLL_LOCKCNT. |
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| 67 | ** Returns -1 on failure. |
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| 68 | */ |
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| 69 | int pll_set_system_vco(int _msel, int _df, int _lockcnt); |
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| 70 | |
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| 71 | #endif /* __ADSPLPBLACKFIN__ */ |
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| 72 | |
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| 73 | #ifdef __cplusplus |
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| 74 | } |
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| 75 | #endif |
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| 76 | |
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| 77 | #endif /* __ASSEMBLER__ */ |
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| 78 | |
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| 79 | #ifdef _MISRA_RULES |
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| 80 | #pragma diag(pop) |
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| 81 | #endif /* _MISRA_RULES */ |
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| 82 | |
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| 83 | #endif /* _PLL_H */ |
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| 84 | |
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