127e4d9524
Driver for tbg clocks. Read reference frequency from parent and modify it depending on parameters read from register. Reviewed by: manu Obtained from: Semihalf Differential revision: https://reviews.freebsd.org/D32293
55 lines
1.9 KiB
C
55 lines
1.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2021 Semihalf.
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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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*/
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#ifndef _TBG_CLK_PLL_H_
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#define _TBG_CLK_PLL_H_
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#include <dev/extres/clk/clk.h>
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struct a37x0_tbg_pll_reg_def {
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uint32_t offset;
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uint32_t shift;
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uint32_t mask;
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};
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struct a37x0_tbg_pll_clk_def {
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struct clknode_init_def clkdef;
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struct a37x0_tbg_pll_reg_def vcodiv;
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struct a37x0_tbg_pll_reg_def refdiv;
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struct a37x0_tbg_pll_reg_def fbdiv;
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struct a37x0_tbg_pll_reg_def tbg_bypass;
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};
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int a37x0_tbg_pll_clk_register(struct clkdom *,
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const struct a37x0_tbg_pll_clk_def *);
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#endif
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