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From: "Loh, Tien Hock" <tien.hock.loh@intel.com>
To: devel@edk2.groups.io, thloh85@gmail.com
Cc: "Tien Hock, Loh" <tien.hock.loh@intel.com>,
	Leif Lindholm <leif.lindholm@linaro.org>,
	Ard Biesheuvel <ard.biesheuvel@linaro.org>
Subject: [PATCH v2] EmbeddedPkg: Clear CTYPE on initialization
Date: Thu,  9 May 2019 16:02:04 +0800	[thread overview]
Message-ID: <1557388925-184479-1-git-send-email-tien.hock.loh@intel.com> (raw)

From: "Tien Hock, Loh" <tien.hock.loh@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@intel.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Ard Biesheuvel <ard.biesheuvel@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


             reply	other threads:[~2019-05-09  8:02 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-09  8:02 Loh, Tien Hock [this message]
2019-05-09  8:02 ` [PATCH v2] EmbeddedPkg: Fix DwEmmc SendCommand polling Loh, Tien Hock
2019-05-22  7:57 ` [edk2-devel] [PATCH v2] EmbeddedPkg: Clear CTYPE on initialization Loh, Tien Hock

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