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/*
* Copyright (c) 2015, Freescale Semiconductor, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice, this list
* of conditions and the following disclaimer.
*
* o Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* o Neither the name of Freescale Semiconductor, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "ccm_imx7d.h"
/*******************************************************************************
* Code
******************************************************************************/
/*FUNCTION**********************************************************************
*
* Function Name : CCM_SetDivider
* Description : Set root clock divider
*
*END**************************************************************************/
void CCM_SetRootDivider(CCM_Type * base, uint32_t ccmRoot, uint32_t pre, uint32_t post)
{
assert (pre < 8);
assert (post < 64);
CCM_REG(ccmRoot) = (CCM_REG(ccmRoot) &
(~(CCM_TARGET_ROOT0_PRE_PODF_MASK | CCM_TARGET_ROOT0_POST_PODF_MASK))) |
CCM_TARGET_ROOT0_PRE_PODF(pre) | CCM_TARGET_ROOT0_POST_PODF(post);
}
/*FUNCTION**********************************************************************
*
* Function Name : CCM_GetDivider
* Description : Get root clock divider
*
*END**************************************************************************/
void CCM_GetRootDivider(CCM_Type * base, uint32_t ccmRoot, uint32_t *pre, uint32_t *post)
{
assert (pre && post);
*pre = (CCM_REG(ccmRoot) & CCM_TARGET_ROOT0_PRE_PODF_MASK) >> CCM_TARGET_ROOT0_PRE_PODF_SHIFT;
*post = (CCM_REG(ccmRoot) & CCM_TARGET_ROOT0_POST_PODF_MASK) >> CCM_TARGET_ROOT0_POST_PODF_SHIFT;
}
/*FUNCTION**********************************************************************
*
* Function Name : CCM_UpdateRoot
* Description : Update clock root in one step, for dynamical clock switching
*
*END**************************************************************************/
void CCM_UpdateRoot(CCM_Type * base, uint32_t ccmRoot, uint32_t mux, uint32_t pre, uint32_t post)
{
assert (pre < 8);
assert (post < 64);
CCM_REG(ccmRoot) = (CCM_REG(ccmRoot) &
(~(CCM_TARGET_ROOT0_MUX_MASK | CCM_TARGET_ROOT0_PRE_PODF_MASK | CCM_TARGET_ROOT0_POST_PODF_MASK))) |
CCM_TARGET_ROOT0_MUX(mux) | CCM_TARGET_ROOT0_PRE_PODF(pre) | CCM_TARGET_ROOT0_POST_PODF(post);
}
/*******************************************************************************
* EOF
******************************************************************************/
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