patacongo commented on a change in pull request #1728:
URL: https://github.com/apache/incubator-nuttx/pull/1728#discussion_r489479853



##########
File path: boards/arm/sama5/giant-board/src/sam_sdmmc.c
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@@ -0,0 +1,319 @@
+/****************************************************************************
+ *  boards/arm/sama5/giant-board/src/sam_sdmmc.c
+ *
+ *  Licensed to the Apache Software Foundation (ASF) under one or more
+ *  contributor license agreements.  See the NOTICE file distributed with
+ *  this work for additional information regarding copyright ownership.  The
+ *  ASF licenses this file to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance with the
+ *  License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ *  License for the specific language governing permissions and limitations
+ *  under the License.
+ *
+ ****************************************************************************/
+
+/* The Giant Board provide one Micro SD memory card slot at J6 (SDMMC1).
+ *
+ * SDMMC1: The Micro SD card slot connects via SDMMC1.  The card detect
+ * discrete is available on PA21 (pulled high), shared with DAT3. The write
+ * protect discrete is tied to ground and not available to software. The
+ * slot only supports 4-bit wide transfer mode.
+ *
+ *   PA18  SDMMC1_DAT0
+ *   PA19  SDMMC1_DAT1
+ *   PA20  SDMMC1_DAT2
+ *   PA21  SDMMC1_DAT3 / CD
+ *   PD22  SDMMC1_CK
+ *   PA28  SDMMC1_CMD
+ *
+ */
+

Review comment:
       I believe that all of the comments above are incorrect.




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