From aa7b248a05323d4720969227603e39a22777ed95 Mon Sep 17 00:00:00 2001
From: Michael Hennerich <michael.hennerich@analog.com>
Date: Thu, 18 Jun 2009 09:12:50 +0000
Subject: [PATCH] Blackfin: bf537-stamp: comment CF-Flash Card Support better
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---
include/configs/bf537-stamp.h | 29 ++++++++++++++++++++++++-----
1 file changed, 24 insertions(+), 5 deletions(-)
diff --git a/include/configs/bf537-stamp.h b/include/configs/bf537-stamp.h
index 98300db7b5..74b9ecd0b0 100644
--- a/include/configs/bf537-stamp.h
+++ b/include/configs/bf537-stamp.h
@@ -178,9 +178,28 @@
/*
* CF-CARD IDE-HDD Support
*/
-/* #define CONFIG_BFIN_TRUE_IDE */ /* Add CF flash card support */
-/* #define CONFIG_BFIN_CF_IDE */ /* Add CF flash card support */
-/* #define CONFIG_BFIN_HDD_IDE */ /* Add IDE Disk Drive (HDD) support */
+
+/*
+ * Add CF flash card support in TRUE-IDE Mode (CF-IDE-NAND Card)
+ * Strange address mapping Blackfin A13 connects to CF_A0
+ */
+
+/* #define CONFIG_BFIN_TRUE_IDE */
+
+/*
+ * Add CF flash card support in Common Memory Mode (CF-IDE-NAND Card)
+ * This should be the preferred mode
+ */
+
+/* #define CONFIG_BFIN_CF_IDE */
+
+/*
+ * Add IDE Disk Drive (HDD) support
+ * See example interface here:
+ * http://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:drivers:ide-blackfin
+ */
+
+/* #define CONFIG_BFIN_HDD_IDE */
#if defined(CONFIG_BFIN_CF_IDE) || \
defined(CONFIG_BFIN_HDD_IDE) || \
@@ -218,7 +237,7 @@
#define CONFIG_SYS_ATA_DATA_OFFSET 0x0020 /* data I/O */
#define CONFIG_SYS_ATA_REG_OFFSET 0x0020 /* normal register accesses */
#define CONFIG_SYS_ATA_ALT_OFFSET 0x001C /* alternate registers */
-#define CONFIG_SYS_ATA_STRIDE 2 /* CF.A0 --> Blackfin.Ax */
+#define CONFIG_SYS_ATA_STRIDE 2 /* CF.A0 --> Blackfin.A13 */
#elif defined(CONFIG_BFIN_CF_IDE)
#define CONFIG_SYS_ATA_BASE_ADDR 0x20211800
@@ -226,7 +245,7 @@
#define CONFIG_SYS_ATA_DATA_OFFSET 0x0000 /* data I/O */
#define CONFIG_SYS_ATA_REG_OFFSET 0x0000 /* normal register accesses */
#define CONFIG_SYS_ATA_ALT_OFFSET 0x000E /* alternate registers */
-#define CONFIG_SYS_ATA_STRIDE 1 /* CF.A0 --> Blackfin.Ax */
+#define CONFIG_SYS_ATA_STRIDE 1 /* CF_A0=0, with /CE1 /CE2 odd/even byte selects */
#elif defined(CONFIG_BFIN_HDD_IDE)
#define CONFIG_SYS_ATA_BASE_ADDR 0x20314000
--
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