diff --git a/mcu/driver/devdrv/pdn/src/drvpdn.c b/mcu/driver/devdrv/pdn/src/drvpdn.c
new file mode 100644
index 0000000..597d446
--- /dev/null
+++ b/mcu/driver/devdrv/pdn/src/drvpdn.c
@@ -0,0 +1,88 @@
+/*****************************************************************************
+*  Copyright Statement:
+*  --------------------
+*  This software is protected by Copyright and the information contained
+*  herein is confidential. The software may not be copied and the information
+*  contained herein may not be used or disclosed except with the written
+*  permission of MediaTek Inc. (C) 2012
+*
+*  BY OPENING THIS FILE, BUYER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
+*  THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
+*  RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO BUYER ON
+*  AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
+*  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
+*  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
+*  NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
+*  SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
+*  SUPPLIED WITH THE MEDIATEK SOFTWARE, AND BUYER AGREES TO LOOK ONLY TO SUCH
+*  THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. MEDIATEK SHALL ALSO
+*  NOT BE RESPONSIBLE FOR ANY MEDIATEK SOFTWARE RELEASES MADE TO BUYER'S
+*  SPECIFICATION OR TO CONFORM TO A PARTICULAR STANDARD OR OPEN FORUM.
+*
+*  BUYER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND CUMULATIVE
+*  LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
+*  AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
+*  OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY BUYER TO
+*  MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
+*
+*  THE TRANSACTION CONTEMPLATED HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE
+*  WITH THE LAWS OF THE STATE OF CALIFORNIA, USA, EXCLUDING ITS CONFLICT OF
+*  LAWS PRINCIPLES.  ANY DISPUTES, CONTROVERSIES OR CLAIMS ARISING THEREOF AND
+*  RELATED THERETO SHALL BE SETTLED BY ARBITRATION IN SAN FRANCISCO, CA, UNDER
+*  THE RULES OF THE INTERNATIONAL CHAMBER OF COMMERCE (ICC).
+*
+*****************************************************************************/
+
+/*******************************************************************************
+ * Filename:
+ * ---------
+ *   drvpdn.c
+ *
+ * Project:
+ * --------
+ *   UMOLYA
+ *
+ * Description:
+ * ------------
+ *   PDN Driver (C Source)
+ *
+ * Author:
+ * -------
+ * -------
+ *
+ * ==========================================================================
+ * $Log$
+ *
+ * 08 10 2017 devin.yang
+ * [MOLY00269905] [System Service][PDN][Gen93][UMOLYA][LR12A.R2.MP] Update PDN driver for new module clock control.
+ * .
+ *
+ * 08 10 2017 devin.yang
+ * [MOLY00269905] [System Service][PDN][Gen93][UMOLYA][LR12A.R2.MP] Update PDN driver for new module clock control.
+ * .
+ *
+ *
+ ****************************************************************************/
+
+#include "kal_public_api.h"
+
+#if defined(__MTK_TARGET__)
+
+kal_spinlockid pdn_cg_spinlock; /* spinlock for IA_DEBUG_PERI_MISC_CLK_CTRL */
+
+/*------------------------------------------------------------------------
+ * void PDN_init(void)
+ * Pupose:      Create spinlock for IA_DEBUG_PERI_MISC_CLK_CTRL register access.
+ * Parameters: None
+ * Return :      None
+ * Note   :      None
+ *
+ *------------------------------------------------------------------------
+ */
+void PDN_Init(void)
+{
+    /* create spinlock for IA_DEBUG_PERI_MISC_CLK_CTRL */
+    pdn_cg_spinlock = kal_create_spinlock("PDN_CG");
+}
+
+#endif