diff --git a/port/bouffalolab/README.md b/port/bouffalolab/README.md
new file mode 100644
index 00000000..dd500e82
--- /dev/null
+++ b/port/bouffalolab/README.md
@@ -0,0 +1,2 @@
+[BL702](https://github.com/bouffalolab/bl_mcu_sdk/blob/master/drivers/lhal/src/bflb_usb_v1.c)
+[BL616/BL808](https://github.com/bouffalolab/bl_mcu_sdk/blob/master/drivers/lhal/src/bflb_usb_v2.c)
diff --git a/port/bouffalolab/bl702/README.md b/port/bouffalolab/bl702/README.md
deleted file mode 100644
index 796a8c70..00000000
--- a/port/bouffalolab/bl702/README.md
+++ /dev/null
@@ -1,2 +0,0 @@
-[bl_mcu_sdk_usb_dc](https://github.com/bouffalolab/bl_mcu_sdk/blob/master/bsp/bsp_common/usb/usb_dc.c)
-[bl_mcu_sdk_hal_usb](https://github.com/bouffalolab/bl_mcu_sdk/blob/master/drivers/bl702_driver/hal_drv/src/hal_usb.c)
diff --git a/port/dwc2/README.md b/port/dwc2/README.md
index d0bc3df6..2ef2d7ad 100644
--- a/port/dwc2/README.md
+++ b/port/dwc2/README.md
@@ -26,6 +26,10 @@
 
 - HC32F4A0
 
+## Espressif
+
+- ESP32S2、ESP32S3
+
 ## Before Use
 
 Your should implement `usb_dc_low_level_init` and `usb_dc_low_level_deinit`.
diff --git a/port/musb/README.md b/port/musb/README.md
index 9e839ab5..0e764aed 100644
--- a/port/musb/README.md
+++ b/port/musb/README.md
@@ -2,6 +2,8 @@
 
 ## Support Chip List
 
+### HEZHOU
+
 - AIR105
 
 ### ES32