49 lines
1.7 KiB
C
49 lines
1.7 KiB
C
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2010 by Michael Sevakis
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*
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* i.MX31 DVFS and DPTC drivers
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "system.h"
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#include "ccm-imx31.h"
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#include "mc13783.h"
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/* Most of the code in here is based upon the Linux BSP provided by Freescale
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* Copyright 2004-2008 Freescale Semiconductor, Inc. All Rights Reserved. */
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void dvfs_dptc_start(void)
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{
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/* For now, just set the regulator voltage off of overdrive mode */
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/* For 264 MHz, DPTC is not needed and lower V can be used */
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mc13783_write_masked(MC13783_SWITCHERS0,
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MC13783_SW_1_350 << MC13783_SW1A_POS,
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MC13783_SW1A);
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imx31_regmod32(&CCM_PMCR0, CCM_PMCR0_DVS1_0_DVS0_0,
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CCM_PMCR0_DVSUP_DVS);
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}
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void dvfs_dptc_stop(void)
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{
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/* Nothing for now */
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}
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