[edk2-devel] [PATCH v2 5/7] EmbeddedPkg: Clear CTYPE on initialization

[Leif Lindholm]

On Mon, May 27, 2019 at 05:30:26PM +0800, tien.hock.loh at intel.com wrote:
> From: "Tien Hock, Loh" <tien.hock.loh at intel.com>
> 
> Clear CTYPE on initialization. This is important if previous bootloader
> changes the CTYPE can cause the controller to not initialize correctly
> if CTYPE is not reset to 0
> 
> Signed-off-by: "Tien Hock, Loh" <tien.hock.loh at intel.com>
> Cc: Leif Lindholm <leif.lindholm at linaro.org>
> Cc: Ard Biesheuvel <ard.biesheuvel at linaro.org>

Reviewed-by: Leif Lindholm <leif.lindholm at linaro.org>

> ---
>  EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.c b/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.c
> index e0068655ca..c6c8e04917 100644
> --- a/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.c
> +++ b/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.c
> @@ -205,6 +205,7 @@ DwEmmcNotifyState (
>      MmioWrite32 (DWEMMC_TMOUT, ~0);
>      MmioWrite32 (DWEMMC_IDINTEN, 0);
>      MmioWrite32 (DWEMMC_BMOD, DWEMMC_IDMAC_SWRESET);
> +    MmioWrite32 (DWEMMC_CTYPE, 0);
>  
>      MmioWrite32 (DWEMMC_BLKSIZ, DWEMMC_BLOCK_SIZE);
>      do {
> -- 
> 2.19.0
> 

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