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MdeModulePkg/SdMmcPciHcDxe: Hook SwitchClockFreq after SD clock start

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For eMMC modules we used to notify the platform about frequency
change only after sending CMD13 which meant that platform
might not get a chance to apply required post frequency
change fixes to get the clock stable. To fix this
notification has been moved to SdMmcHcClockSupply function
just after we start the SD clock. During first time setup
the notification won't be sent to avoid changing old behavior.

Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Marcin Wojtas <mw@semihalf.com>
Cc: Zhichao Gao <zhichao.gao@intel.com>
Cc: Liming Gao <liming.gao@intel.com>

Signed-off-by: Mateusz Albecki <mateusz.albecki@intel.com>
Tested-by: Marcin Wojtas <mw@semihalf.com>
Tested-by: Hao A Wu <hao.a.wu@intel.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
This commit is contained in:
Albecki, Mateusz
2019-12-21 01:13:11 +08:00
committed by mergify[bot]
parent b948a49615
commit 49accdedf9
5 changed files with 81 additions and 142 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHci.h
View File

@@ -478,30 +478,6 @@ SdMmcHcStopClock (
IN UINT8 Slot
);
/**
SD/MMC card clock supply.
Refer to SD Host Controller Simplified spec 3.0 Section 3.2.1 for details.
@param[in] PciIo The PCI IO protocol instance.
@param[in] Slot The slot number of the SD card to send the command to.
@param[in] ClockFreq The max clock frequency to be set. The unit is KHz.
@param[in] BaseClkFreq The base clock frequency of host controller in MHz.
@param[in] ControllerVer The version of host controller.
@retval EFI_SUCCESS The clock is supplied successfully.
@retval Others The clock isn't supplied successfully.
**/
EFI_STATUS
SdMmcHcClockSupply (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN UINT8 Slot,
IN UINT64 ClockFreq,
IN UINT32 BaseClkFreq,
IN UINT16 ControllerVer
);
/**
SD/MMC bus power control.
@@ -542,26 +518,6 @@ SdMmcHcSetBusWidth (
IN UINT16 BusWidth
);
/**
Supply SD/MMC card with lowest clock frequency at initialization.
@param[in] PciIo The PCI IO protocol instance.
@param[in] Slot The slot number of the SD card to send the command to.
@param[in] BaseClkFreq The base clock frequency of host controller in MHz.
@param[in] ControllerVer The version of host controller.
@retval EFI_SUCCESS The clock is supplied successfully.
@retval Others The clock isn't supplied successfully.
**/
EFI_STATUS
SdMmcHcInitClockFreq (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN UINT8 Slot,
IN UINT32 BaseClkFreq,
IN UINT16 ControllerVer
);
/**
Supply SD/MMC card with maximum voltage at initialization.