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diff --git a/drivers/fsl_dmamux.h b/drivers/fsl_dmamux.h
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+/*
+ * The Clear BSD License
+ * Copyright (c) 2015, Freescale Semiconductor, Inc.
+ * Copyright 2016-2017 NXP
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted (subject to the limitations in the disclaimer below) 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 the copyright holder nor the names of its
+ *   contributors may be used to endorse or promote products derived from this
+ *   software without specific prior written permission.
+ *
+ * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE.
+ * 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.
+ */
+
+#ifndef _FSL_DMAMUX_H_
+#define _FSL_DMAMUX_H_
+
+#include "fsl_common.h"
+
+/*!
+ * @addtogroup dmamux
+ * @{
+ */
+
+
+/*******************************************************************************
+ * Definitions
+ ******************************************************************************/
+
+/*! @name Driver version */
+/*@{*/
+/*! @brief DMAMUX driver version 2.0.2. */
+#define FSL_DMAMUX_DRIVER_VERSION (MAKE_VERSION(2, 0, 2))
+/*@}*/
+
+/*******************************************************************************
+ * API
+ ******************************************************************************/
+
+#if defined(__cplusplus)
+extern "C" {
+#endif /* __cplusplus */
+
+/*!
+ * @name DMAMUX Initialization and de-initialization
+ * @{
+ */
+
+/*!
+ * @brief Initializes the DMAMUX peripheral.
+ *
+ * This function ungates the DMAMUX clock.
+ *
+ * @param base DMAMUX peripheral base address.
+ *
+ */
+void DMAMUX_Init(DMAMUX_Type *base);
+
+/*!
+ * @brief Deinitializes the DMAMUX peripheral.
+ *
+ * This function gates the DMAMUX clock.
+ *
+ * @param base DMAMUX peripheral base address.
+ */
+void DMAMUX_Deinit(DMAMUX_Type *base);
+
+/* @} */
+/*!
+ * @name DMAMUX Channel Operation
+ * @{
+ */
+
+/*!
+ * @brief Enables the DMAMUX channel.
+ *
+ * This function enables the DMAMUX channel.
+ *
+ * @param base DMAMUX peripheral base address.
+ * @param channel DMAMUX channel number.
+ */
+static inline void DMAMUX_EnableChannel(DMAMUX_Type *base, uint32_t channel)
+{
+    assert(channel < FSL_FEATURE_DMAMUX_MODULE_CHANNEL);
+
+    base->CHCFG[channel] |= DMAMUX_CHCFG_ENBL_MASK;
+}
+
+/*!
+ * @brief Disables the DMAMUX channel.
+ *
+ * This function disables the DMAMUX channel.
+ *
+ * @note The user must disable the DMAMUX channel before configuring it.
+ * @param base DMAMUX peripheral base address.
+ * @param channel DMAMUX channel number.
+ */
+static inline void DMAMUX_DisableChannel(DMAMUX_Type *base, uint32_t channel)
+{
+    assert(channel < FSL_FEATURE_DMAMUX_MODULE_CHANNEL);
+
+    base->CHCFG[channel] &= ~DMAMUX_CHCFG_ENBL_MASK;
+}
+
+/*!
+ * @brief Configures the DMAMUX channel source.
+ *
+ * @param base DMAMUX peripheral base address.
+ * @param channel DMAMUX channel number.
+ * @param source Channel source, which is used to trigger the DMA transfer.
+ */
+static inline void DMAMUX_SetSource(DMAMUX_Type *base, uint32_t channel, uint32_t source)
+{
+    assert(channel < FSL_FEATURE_DMAMUX_MODULE_CHANNEL);
+
+    base->CHCFG[channel] = ((base->CHCFG[channel] & ~DMAMUX_CHCFG_SOURCE_MASK) | DMAMUX_CHCFG_SOURCE(source));
+}
+
+#if defined(FSL_FEATURE_DMAMUX_HAS_TRIG) && FSL_FEATURE_DMAMUX_HAS_TRIG > 0U
+/*!
+ * @brief Enables the DMAMUX period trigger.
+ *
+ * This function enables the DMAMUX period trigger feature.
+ *
+ * @param base DMAMUX peripheral base address.
+ * @param channel DMAMUX channel number.
+ */
+static inline void DMAMUX_EnablePeriodTrigger(DMAMUX_Type *base, uint32_t channel)
+{
+    assert(channel < FSL_FEATURE_DMAMUX_MODULE_CHANNEL);
+
+    base->CHCFG[channel] |= DMAMUX_CHCFG_TRIG_MASK;
+}
+
+/*!
+ * @brief Disables the DMAMUX period trigger.
+ *
+ * This function disables the DMAMUX period trigger.
+ *
+ * @param base DMAMUX peripheral base address.
+ * @param channel DMAMUX channel number.
+ */
+static inline void DMAMUX_DisablePeriodTrigger(DMAMUX_Type *base, uint32_t channel)
+{
+    assert(channel < FSL_FEATURE_DMAMUX_MODULE_CHANNEL);
+
+    base->CHCFG[channel] &= ~DMAMUX_CHCFG_TRIG_MASK;
+}
+#endif /* FSL_FEATURE_DMAMUX_HAS_TRIG */
+
+#if (defined(FSL_FEATURE_DMAMUX_HAS_A_ON) && FSL_FEATURE_DMAMUX_HAS_A_ON)
+/*!
+ * @brief Enables the DMA channel to be always ON.
+ *
+ * This function enables the DMAMUX channel always ON feature.
+ *
+ * @param base DMAMUX peripheral base address.
+ * @param channel DMAMUX channel number.
+ * @param enable Switcher of the always ON feature. "true" means enabled, "false" means disabled.
+ */
+static inline void DMAMUX_EnableAlwaysOn(DMAMUX_Type *base, uint32_t channel, bool enable)
+{
+    assert(channel < FSL_FEATURE_DMAMUX_MODULE_CHANNEL);
+
+    if (enable)
+    {
+        base->CHCFG[channel] |= DMAMUX_CHCFG_A_ON_MASK;
+    }
+    else
+    {
+        base->CHCFG[channel] &= ~DMAMUX_CHCFG_A_ON_MASK;
+    }
+}
+#endif /* FSL_FEATURE_DMAMUX_HAS_A_ON */
+
+/* @} */
+
+#if defined(__cplusplus)
+}
+#endif /* __cplusplus */
+
+/* @} */
+
+#endif /* _FSL_DMAMUX_H_ */