diff options
Diffstat (limited to 'EmbeddedPkg/Universal')
-rw-r--r-- | EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c b/EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c index 574a77e0fb..4ce0ddd03f 100644 --- a/EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c +++ b/EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c @@ -254,7 +254,7 @@ InitializeEmmcDevice ( EFI_MMC_HOST_PROTOCOL *Host;
EFI_STATUS Status = EFI_SUCCESS;
ECSD *ECSDData;
- UINT32 BusClockFreq, Idx;
+ UINT32 BusClockFreq, Idx, BusMode;
UINT32 TimingMode[4] = {EMMCHS52DDR1V2, EMMCHS52DDR1V8, EMMCHS52, EMMCHS26};
Host = MmcHostInstance->MmcHost;
@@ -286,7 +286,19 @@ InitializeEmmcDevice ( }
Status = Host->SetIos (Host, BusClockFreq, 8, TimingMode[Idx]);
if (!EFI_ERROR (Status)) {
- Status = EmmcSetEXTCSD (MmcHostInstance, EXTCSD_BUS_WIDTH, EMMC_BUS_WIDTH_DDR_8BIT);
+ switch (TimingMode[Idx]) {
+ case EMMCHS52DDR1V2:
+ case EMMCHS52DDR1V8:
+ BusMode = EMMC_BUS_WIDTH_DDR_8BIT;
+ break;
+ case EMMCHS52:
+ case EMMCHS26:
+ BusMode = EMMC_BUS_WIDTH_8BIT;
+ break;
+ default:
+ return EFI_UNSUPPORTED;
+ }
+ Status = EmmcSetEXTCSD (MmcHostInstance, EXTCSD_BUS_WIDTH, BusMode);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "InitializeEmmcDevice(): Failed to set EXTCSD bus width, Status:%r\n", Status));
}
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