| Message ID | 1458650901-7229-5-git-send-email-haojian.zhuang@linaro.org |
|---|---|
| State | Superseded |
| Headers | show |
diff --git a/EmbeddedPkg/Include/Protocol/MmcHost.h b/EmbeddedPkg/Include/Protocol/MmcHost.h index 89f2e80..13e99e7 100644 --- a/EmbeddedPkg/Include/Protocol/MmcHost.h +++ b/EmbeddedPkg/Include/Protocol/MmcHost.h @@ -131,6 +131,12 @@ typedef EFI_STATUS (EFIAPI *MMC_WRITEBLOCKDATA) ( IN UINT32 *Buffer ); +typedef EFI_STATUS (EFIAPI *MMC_SETIOS) ( + IN EFI_MMC_HOST_PROTOCOL *This, + IN UINT32 BusClockRate, + IN UINT32 BusWidth + ); + struct _EFI_MMC_HOST_PROTOCOL { @@ -147,6 +153,8 @@ struct _EFI_MMC_HOST_PROTOCOL { MMC_READBLOCKDATA ReadBlockData; MMC_WRITEBLOCKDATA WriteBlockData; + MMC_SETIOS SetIos; + }; #define MMC_HOST_PROTOCOL_REVISION 0x00010001 // 1.1
By default, MMC is initialized with 1-bit mode and less than 400KHz bus clock. It causes MMC working inefficiently. Add the interface to change the bus width and speed. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org> --- EmbeddedPkg/Include/Protocol/MmcHost.h | 8 ++++++++ 1 file changed, 8 insertions(+) -- 1.9.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel