12a05f9a86
support frameworks(i.e. reset/regulators/phy/tsensors/fuses...). The clock framework significantly simplifies handling of complex clock structures found in modern SoCs. It provides the unified consumers interface, holds and manages actual clock topology, frequency and gating. It's tested on three different ARM boards (Nvidia Tegra TK1, Inforce 6410 and Odroid XU2) and on one MIPS board (Creator Ci20) by kan@. The framework is still far from perfect and probably doesn't have stable interface yet, but we want to start testing it on more real boards and different architectures. Reviewed by: ian, kan (earlier version)
49 lines
2.0 KiB
C
49 lines
2.0 KiB
C
/*-
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* Copyright 2016 Michal Meloun <mmel@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _DEV_EXTRES_CLK_DIV_H_
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#define _DEV_EXTRES_CLK_DIV_H_
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#include <dev/extres/clk/clk.h>
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#define CLK_DIV_ZERO_BASED 0x0001 /* Zero based divider. */
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struct clk_div_def {
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struct clknode_init_def clkdef;
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uint32_t offset; /* Divider register offset */
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uint32_t i_shift; /* Pos of div bits in reg */
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uint32_t i_width; /* Width of div bit field */
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uint32_t f_shift; /* Fractional divide bits, */
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uint32_t f_width; /* set to 0 for int divider */
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int div_flags; /* Divider-specific flags */
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};
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int clknode_div_register(struct clkdom *clkdom, struct clk_div_def *clkdef);
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#endif /*_DEV_EXTRES_CLK_DIV_H_*/
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