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The BayTrail and CherryTrail platforms provide platform clocks through their Power Management Controller (PMC). The SoC supports up to 6 clocks (PMC_PLT_CLK[0..5]) with a frequency of either 19.2 MHz (PLL) or 25 MHz (XTAL) for BayTrail and a frequency of 19.2 MHz (XTAL) for CherryTrail. These clocks are available for general system use, where appropriate, and each have Control & Frequency register fields associated with them. Port from legacy by Pierre Bossart, integration in clock framework by Irina Tirdea Signed-off-by: Irina Tirdea <irina.tirdea@intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
/*
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* Intel Atom platform clocks for BayTrail and CherryTrail SoC.
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*
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* Copyright (C) 2016, Intel Corporation
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* Author: Irina Tirdea <irina.tirdea@intel.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef __PLATFORM_DATA_X86_CLK_PMC_ATOM_H
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#define __PLATFORM_DATA_X86_CLK_PMC_ATOM_H
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/**
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* struct pmc_clk - PMC platform clock configuration
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*
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* @name: identified, typically pmc_plt_clk_<x>, x=[0..5]
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* @freq: in Hz, 19.2MHz and 25MHz (Baytrail only) supported
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* @parent_name: one of 'xtal' or 'osc'
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*/
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struct pmc_clk {
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const char *name;
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unsigned long freq;
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const char *parent_name;
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};
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/**
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* struct pmc_clk_data - common PMC clock configuration
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*
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* @base: PMC clock register base offset
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* @clks: pointer to set of registered clocks, typically 0..5
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*/
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struct pmc_clk_data {
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void __iomem *base;
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const struct pmc_clk *clks;
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};
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#endif /* __PLATFORM_DATA_X86_CLK_PMC_ATOM_H */
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