diff --git a/VERSION b/VERSION
index 63c8a3f6..12fd337f 100644
--- a/VERSION
+++ b/VERSION
@@ -1,5 +1,5 @@
 VERSION_MAJOR = 1
-VERSION_MINOR = 1
+VERSION_MINOR = 2
 PATCHLEVEL = 99
 VERSION_TWEAK = 0
 EXTRAVERSION = 0
diff --git a/cherryusb_config_template.h b/cherryusb_config_template.h
index eff54194..713db692 100644
--- a/cherryusb_config_template.h
+++ b/cherryusb_config_template.h
@@ -6,8 +6,8 @@
 #ifndef CHERRYUSB_CONFIG_H
 #define CHERRYUSB_CONFIG_H
 
-#define CHERRYUSB_VERSION     0x010100
-#define CHERRYUSB_VERSION_STR "v1.1.0"
+#define CHERRYUSB_VERSION     0x010200
+#define CHERRYUSB_VERSION_STR "v1.2.0"
 
 /* ================ USB common Configuration ================ */
 
diff --git a/docs/source/api/api_host.rst b/docs/source/api/api_host.rst
index 92274922..1378df87 100644
--- a/docs/source/api/api_host.rst
+++ b/docs/source/api/api_host.rst
@@ -111,19 +111,6 @@ hub 结构体
         uint8_t *int_buffer;
     };
 
-usbh_alloc_bus
-""""""""""""""""""""""""""""""""""""
-
-``usbh_alloc_bus`` 用于创建一个 bus，并且根据 reg_base 分配一个 hcd
-
-.. code-block:: C
-
-    struct usbh_bus *usbh_alloc_bus(uint8_t busid, uint32_t reg_base);
-
-- **busid**  bus id，从 0开始，不能超过 `CONFIG_USBHOST_MAX_BUS`
-- **reg_base**  hcd 寄存器基地址
-- 返回 bus 句柄
-
 usbh_initialize
 """"""""""""""""""""""""""""""""""""
 
@@ -131,9 +118,11 @@ usbh_initialize
 
 .. code-block:: C
 
-    int usbh_initialize(struct usbh_bus *bus);
+    int usbh_initialize(uint8_t busid, uint32_t reg_base);
 
-- **bus**  bus 句柄
+- **busid**  bus id，从 0开始，不能超过 `CONFIG_USBHOST_MAX_BUS`
+- **reg_base**  hcd 寄存器基地址
+- **return**  0 表示正常其他表示错误
 
 usbh_find_class_instance
 """"""""""""""""""""""""""""""""""""
diff --git a/docs/source/conf.py b/docs/source/conf.py
index dfacf143..6b35bd40 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -6,8 +6,8 @@
 copyright = '2024, sakumisu'
 author = 'sakumisu'
 
-release = '1.1.0'
-version = '1.1.0'
+release = '1.2.0'
+version = '1.2.0'
 
 # -- General configuration