From 9252d67ab3007601ddf983d1278cbe0e4a647f34 Mon Sep 17 00:00:00 2001
From: Joe Zhou <shjzhou@marvell.com>
Date: Wed, 22 Jun 2016 23:09:11 +0800
Subject: MdeModulePkg: SdMmc: Add delay before eMMC reset

This delay is necessary for eMMC reset to working properly.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Joe Zhou <shjzhou@marvell.com>
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
---
 MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/EmmcDevice.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/EmmcDevice.c b/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/EmmcDevice.c
index ee5314510b..61d351726d 100755
--- a/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/EmmcDevice.c
+++ b/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/EmmcDevice.c
@@ -51,6 +51,8 @@ EmmcReset (
   SdMmcCmdBlk.ResponseType = 0;
   SdMmcCmdBlk.CommandArgument = 0;
 
+  gBS->Stall (1000);
+
   Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
 
   return Status;
-- 
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