From aa7b248a05323d4720969227603e39a22777ed95 Mon Sep 17 00:00:00 2001 From: Michael Hennerich 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 Signed-off-by: Mike Frysinger --- 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 -- 2.30.2