update docs

Signed-off-by: Nannie_wangli <annie.wangli@huawei.com>

en/device-dev/driver/driver-platform-rtc-des.md

 # RTC<a name="EN-US_TOPIC_0000001206373007"></a>
 
--   [Overview](#section104842041574)
--   [Available APIs](#section20331159102519)
--   [Usage Guidelines](#section20636145604113)
-    -   [How to Use](#section16919828134215)
-    -   [Creating an RTC Device Handle](#section1131212144310)
-    -   [Releasing the RTC Device Handle](#section10744117144314)
-    -   [Registering RtcAlarmCallback](#section14839440184320)
-    -   [Performing RTC-related Operations](#section161927578433)
-
--   [Usage Example](#section1186111020456)
-
 ## Overview<a name="section104842041574"></a>
 
 The real-time clock \(RTC\) driver provides precise real time for the operating system \(OS\). If the OS is powered off, the RTC driver continues to keep track of the system time using an external battery.

en/device-dev/driver/driver-platform-rtc-develop.md

@@ -13,31 +13,9 @@ In the Hardware Driver Foundation \(HDF\) framework, the real-time clock \(RTC\)
 **Figure  1**  Independent service mode<a name="fig6742142611299"></a>  
 ![](figures/independent-service-mode.png "independent-service-mode-11")
 
-## How to Develop<a name="section1784450860142407"></a>
-
-The RTC module adaptation involves the following steps:
-
-1.  Instantiate the driver entry.
-    -   Instantiate the  **HdfDriverEntry**  structure.
-    -   Call  **HDF\_INIT**  to register the  **HdfDriverEntry**  instance with the HDF framework.
-
-2.  Configure attribute files.
-    -   Add the  **deviceNode**  information to the  **device\_info.hcs**  file.
-    -   \(Optional\) Add the  **rtc\_config.hcs**  file.
-
-3.  Instantiate the RTC controller object.
-    -   Initialize  **RtcHost**.
-    -   Instantiate  **RtcMethod**  in the  **RtcHost**  object.
-
-        >![](../public_sys-resources/icon-note.gif) **NOTE:** 
-        >For details, see  [RtcMethod](#section13652132473017)  and  [Table 1](#table12929217311).
+## Available APIs<a name="section752964871810"></a>
 
-
-4.  Debug the driver.
-    -   \(Optional\) For new drivers, verify the basic functions, such as the RTC control status and response to interrupts.
-
-
-### RtcMethod<a name="section13652132473017"></a>
+RtcMethod
 
 ```
 struct RtcMethod {
@@ -206,6 +184,30 @@ struct RtcMethod {
 </tbody>
 </table>
 
+## How to Develop<a name="section1784450860142407"></a>
+
+The RTC module adaptation involves the following steps:
+
+1.  Instantiate the driver entry.
+    -   Instantiate the  **HdfDriverEntry**  structure.
+    -   Call  **HDF\_INIT**  to register the  **HdfDriverEntry**  instance with the HDF framework.
+
+2.  Configure attribute files.
+    -   Add the  **deviceNode**  information to the  **device\_info.hcs**  file.
+    -   \(Optional\) Add the  **rtc\_config.hcs**  file.
+
+3.  Instantiate the RTC controller object.
+    -   Initialize  **RtcHost**.
+    -   Instantiate  **RtcMethod**  in the  **RtcHost**  object.
+
+        >![](../public_sys-resources/icon-note.gif) **NOTE:** 
+        >For details, see  [RtcMethod](#section13652132473017)  and  [Table 1](#table12929217311).
+
+
+4.  Debug the driver.
+    -   \(Optional\) For new drivers, verify the basic functions, such as the RTC control status and response to interrupts.
+
+
 ## Development Example<a name="section1594883301142407"></a>
 
 The following uses  **rtc\_hi35xx.c**  as an example to present the contents that need to be provided by the vendor to implement device functions.