| /* |
| * 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_ROOT_PRE_PODF_MASK | CCM_TARGET_ROOT_POST_PODF_MASK))) | |
| CCM_TARGET_ROOT_PRE_PODF(pre) | CCM_TARGET_ROOT_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_ROOT_PRE_PODF_MASK) >> CCM_TARGET_ROOT_PRE_PODF_SHIFT; |
| *post = (CCM_REG(ccmRoot) & CCM_TARGET_ROOT_POST_PODF_MASK) >> CCM_TARGET_ROOT_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_ROOT_MUX_MASK | CCM_TARGET_ROOT_PRE_PODF_MASK | CCM_TARGET_ROOT_POST_PODF_MASK))) | |
| CCM_TARGET_ROOT_MUX(mux) | CCM_TARGET_ROOT_PRE_PODF(pre) | CCM_TARGET_ROOT_POST_PODF(post); |
| } |
| |
| /******************************************************************************* |
| * EOF |
| ******************************************************************************/ |
