diff --git a/include/linux/platform_data/rk_isp11_platform_camera_module.h b/include/linux/platform_data/rk_isp11_platform_camera_module.h
index 4c7978b27f7a..aec8ff7f0b41 100644
--- a/include/linux/platform_data/rk_isp11_platform_camera_module.h
+++ b/include/linux/platform_data/rk_isp11_platform_camera_module.h
@@ -21,19 +21,26 @@
 #define PLTFRM_CAMERA_MODULE_REG_CODE_MASK	0xff
 #define PLTFRM_CAMERA_MODULE_REG_LEN_BIT 8
 #define PLTFRM_CAMERA_MODULE_REG_LEN_MASK	(0x03 << PLTFRM_CAMERA_MODULE_REG_LEN_BIT)
+/* bit 8-9: 1 [8bit addr], 2 [16bit addr] */
 #define PLTFRM_CAMERA_MODULE_REG_LEN(flag) \
 	(((flag & PLTFRM_CAMERA_MODULE_REG_LEN_MASK) >> PLTFRM_CAMERA_MODULE_REG_LEN_BIT) + 1)
 #define PLTFRM_CAMERA_MODULE_DATA_LEN_BIT 10
 #define PLTFRM_CAMERA_MODULE_DATA_LEN_MASK	(0x03 << PLTFRM_CAMERA_MODULE_DATA_LEN_BIT)
+/* bit 11-10: 1 [8bit val], 2 [16bit val] */
 #define PLTFRM_CAMERA_MODULE_DATA_LEN(flag) \
 	(((flag & PLTFRM_CAMERA_MODULE_DATA_LEN_MASK) >> PLTFRM_CAMERA_MODULE_DATA_LEN_BIT) + 1)
-#define PLTFRM_CAMERA_MODULE_WR_CONTINUE_MASK 0x1000
+/* bit 12: continue or single mode, bit 0: delay mode */
+#define PLTFRM_CAMERA_MODULE_WR_CONTINUE_MASK 0x1001
 #define PLTFRM_CAMERA_MODULE_WR_CONTINUE 0x0000
 #define PLTFRM_CAMERA_MODULE_WR_SINGLE 0x1000
 
+/* 8bit addr, 8bit val mode */
 #define PLTFRM_CAMERA_MODULE_REG1_TYPE_DATA1 0x000
+/* 16bit addr, 8bit val mode */
 #define PLTFRM_CAMERA_MODULE_REG2_TYPE_DATA1 0x100
+/* 8bit addr, 16bit val mode */
 #define PLTFRM_CAMERA_MODULE_REG1_TYPE_DATA2 0x400
+/* 16bit addr, 16bit val mode */
 #define PLTFRM_CAMERA_MODULE_REG2_TYPE_DATA2 0x500
 #define PLTFRM_CAMERA_MODULE_REG_TYPE_DATA PLTFRM_CAMERA_MODULE_REG2_TYPE_DATA1
 #define PLTFRM_CAMERA_MODULE_REG_TYPE_TIMEOUT 0x01