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

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1.enlarge the recovery time from 10ms to 20ms after port reset to make set address request success for better device compatibility.
2.another enhancement is to use RESET_C bit rather than RESET bit to judge if hub reset port operation is done.


Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Elvin Li <elvin.li@intel.com>


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14227 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
erictian
2013-03-29 09:32:55 +00:00
parent 20bcb757d2
commit 71619ac2b5
3 changed files with 21 additions and 6 deletions
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11
MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h
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@@ -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
// root hub]
//
#define USB_SET_PORT_RESET_STALL (10 * USB_BUS_1_MILLISECOND)
// According to USB2.0, Chapter 11.5.1.5 Resetting,
// the worst case for TDRST is 20ms
//
#define USB_SET_PORT_RESET_STALL (20 * USB_BUS_1_MILLISECOND)
#define USB_SET_ROOT_PORT_RESET_STALL (50 * USB_BUS_1_MILLISECOND)
//
// Wait for port recovery to accept SetAddress, refers to specification
// [USB20-7.1.7.5, it says 10 ms for TRSTRCY]
//
#define USB_SET_PORT_RECOVERY_STALL (10 * USB_BUS_1_MILLISECOND)
//
// Wait for clear roothub port reset, set by experience
//