MdeMdeModulePkg/Usb: two tunings for better device identification behind hub

[mirror_edk2.git] / MdeModulePkg / Bus / Usb / UsbBusDxe / UsbBus.h

diff --git a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h
index 094aea21cd13263cc911387305e7d082f58b4d69..d503a278a496f1c1facb5dc2ed22570ecb1c4bf2 100644 (file)
--- a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h
+++ b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h
@@ -99,9 +99,18 @@ typedef struct _USB_HUB_API    USB_HUB_API;
 // [USB20-7.1.7.5, it says 10ms for hub and 50ms for\r
 // root hub]\r
 //\r
-#define USB_SET_PORT_RESET_STALL       (10 * USB_BUS_1_MILLISECOND)\r
+// According to USB2.0, Chapter 11.5.1.5 Resetting,\r
+// the worst case for TDRST is 20ms\r
+//\r
+#define USB_SET_PORT_RESET_STALL       (20 * USB_BUS_1_MILLISECOND)\r
 #define USB_SET_ROOT_PORT_RESET_STALL  (50 * USB_BUS_1_MILLISECOND)\r
 \r
+//\r
+// Wait for port recovery to accept SetAddress, refers to specification\r
+// [USB20-7.1.7.5, it says 10 ms for TRSTRCY]\r
+//\r
+#define USB_SET_PORT_RECOVERY_STALL    (10 * USB_BUS_1_MILLISECOND)\r
+\r
 //\r
 // Wait for clear roothub port reset, set by experience\r
 //\r