According to SD Host Controller 3.0 spec figure 3-10, we have to wait
1ms before checking DAT[3:0] in voltage switch proc
Cc: Hao Wu <hao.a...@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Feng Tian <feng.t...@intel.com>
---
MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c | 2 +-
MdeModulePkg/Bus/Sd/SdBlockIoPei/SdHci.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c
b/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c
index d05eb9e..b2a0857 100644
--- a/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c
+++ b/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c
@@ -1123,7 +1123,7 @@ SdCardIdentification (
SdMmcHcInitClockFreq (PciIo, Slot, Private->Capability[Slot]);
- gBS->Stall (1);
+ gBS->Stall (1000);
SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_PRESENT_STATE, TRUE, sizeof
(PresentState), &PresentState);
if (((PresentState >> 20) & 0xF) != 0xF) {
diff --git a/MdeModulePkg/Bus/Sd/SdBlockIoPei/SdHci.c
b/MdeModulePkg/Bus/Sd/SdBlockIoPei/SdHci.c
index 8f7ecf9..cbee947 100644
--- a/MdeModulePkg/Bus/Sd/SdBlockIoPei/SdHci.c
+++ b/MdeModulePkg/Bus/Sd/SdBlockIoPei/SdHci.c
@@ -2832,7 +2832,7 @@ SdPeimIdentification (
SdPeimHcInitClockFreq (Slot->SdHcBase);
- MicroSecondDelay (1);
+ MicroSecondDelay (1000);
SdPeimHcRwMmio (Slot->SdHcBase + SD_HC_PRESENT_STATE, TRUE, sizeof
(PresentState), &PresentState);
if (((PresentState >> 20) & 0xF) != 0xF) {
--
2.7.1.windows.2
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