85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
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/*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* notice is included verbatim in any distributions. No written agreement,
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* license, or royalty fee is required for any of the authorized uses.
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* Modifications to this software may be copyrighted by their authors
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* and need not follow the licensing terms described here, provided that
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* the new terms are clearly indicated on the first page of each file where
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* they apply.
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*/
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/************************************************************************
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*
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* pll.h
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*
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* Copyright (C) 2008 Analog Devices, Inc.
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*
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************************************************************************/
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#ifdef __ASSEMBLY__
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#pragma once
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#pragma system_header
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#endif
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#ifndef _PLL_H
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#define _PLL_H
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#ifdef _MISRA_RULES
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#pragma diag(push)
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#pragma diag(suppress:misra_rule_6_3)
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#endif /* _MISRA_RULES */
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#define NO_STARTUP_SET 0
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#define MAX_IN_STARTUP 1
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#ifdef __ASSEMBLY__
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enum clkctrl_t {
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/* no modification of PLL rates in CRT startup - default */
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no_startup_set=NO_STARTUP_SET,
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/* CRT startup sets PLL rates to suitable maximum values */
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max_in_startup=MAX_IN_STARTUP
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};
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/*
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** Define __clk_ctrl to 1 to cause startup to set PLL rates for maximum
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** speed performance rates. The default version defined in the runtime-
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** libraries defines __clk_ctrl to 0 which disables the feature.
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*/
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extern enum clkctrl_t __clk_ctrl;
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if defined(__ADSPLPBLACKFIN__)
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/* Sets SSEL and CSEL bits in PLL_DIV to passed values.
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** Returns -1 on failure.
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*/
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int pll_set_system_clocks(int _csel, int _ssel);
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/*
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** Sets MSEL and DF bits in PLL_CTL and LOCKCNT in PLL_LOCKCNT.
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** Returns -1 on failure.
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*/
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int pll_set_system_vco(int _msel, int _df, int _lockcnt);
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#endif /* __ADSPLPBLACKFIN__ */
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#ifdef _MISRA_RULES
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#pragma diag(pop)
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#endif /* _MISRA_RULES */
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#endif /* _PLL_H */
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