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| author | Haojian Zhuang <haojian.zhuang@outlook.com> | 2016-08-05 20:53:36 +0000 |
|---|---|---|
| committer | android-build-merger <android-build-merger@google.com> | 2016-08-05 20:53:36 +0000 |
| commit | 81c9474998f2104302905a7b3fd2e1bf5dc28f24 (patch) | |
| tree | e81d3bbba4fd99d1c8d1b4239f358c1e09955ba1 | |
| parent | 9b853a12046046741b6a1597825d61bae6904a20 (diff) | |
| parent | dfb07b47513fe1bc4297b678f1b6da10fdf1a3b9 (diff) | |
| download | device_linaro_bootloader_OpenPlatformPkg-81c9474998f2104302905a7b3fd2e1bf5dc28f24.tar.gz device_linaro_bootloader_OpenPlatformPkg-81c9474998f2104302905a7b3fd2e1bf5dc28f24.tar.bz2 device_linaro_bootloader_OpenPlatformPkg-81c9474998f2104302905a7b3fd2e1bf5dc28f24.zip | |
Merge remote-tracking branch 'aosp/upstream-hikey-aosp' into opp
am: dfb07b4751
Change-Id: I7ee97d7339d83aaa136d65f451e36a453f79d467
| -rw-r--r-- | Drivers/Mmc/DwSdDxe/DwSdDxe.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/Drivers/Mmc/DwSdDxe/DwSdDxe.c b/Drivers/Mmc/DwSdDxe/DwSdDxe.c index 3eb8b1e..cbe6b77 100644 --- a/Drivers/Mmc/DwSdDxe/DwSdDxe.c +++ b/Drivers/Mmc/DwSdDxe/DwSdDxe.c @@ -37,6 +37,8 @@ #define DWSD_DMA_THRESHOLD 16 +#define MAX_IDLE_LOOPS 1000000 + typedef struct { UINT32 Des0; UINT32 Des1; @@ -165,7 +167,7 @@ DwSdSetClock ( IN UINTN ClockFreq ) { - UINT32 Divider, Rate, Data; + UINT32 Divider, Rate, Data, Count; EFI_STATUS Status; BOOLEAN Found = FALSE; @@ -180,8 +182,11 @@ DwSdSetClock ( return EFI_NOT_FOUND; // Wait until MMC is idle + Count = 0; do { Data = MmioRead32 (DWSD_STATUS); + if (Count++ > MAX_IDLE_LOOPS) + break; } while (Data & DWSD_STS_DATA_BUSY); // Disable MMC clock first @@ -282,14 +287,17 @@ SendCommand ( IN UINT32 Argument ) { - UINT32 Data, ErrMask; + UINT32 Data, ErrMask, Count; MmioWrite32 (DWSD_RINTSTS, ~0); MmioWrite32 (DWSD_CMDARG, Argument); MicroSecondDelay(500); // Wait until MMC is idle + Count = 0; do { Data = MmioRead32 (DWSD_STATUS); + if (Count++ > MAX_IDLE_LOOPS) + break; } while (Data & DWSD_STS_DATA_BUSY); MmioWrite32 (DWSD_CMD, MmcCmd); |