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ARM: 6032/1: ARM: MMCI: support 8bit mode on the ST Micro version

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This adds support for an 8bit wide bus to the card (data lines
MCIDAT0 through 7 exist) on the ST Micro version and alters the
U300 platform to support this. Also add some ST_ prefix to the
ST-specific registers.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Linus Walleij
2010-04-08 07:38:52 +01:00
committed by Russell King
parent 8e797a7e4f
commit 771dc157e0
3 changed files with 9 additions and 5 deletions
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6
drivers/mmc/host/mmci.h
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@@ -25,9 +25,11 @@
#define MCI_CLK_ENABLE (1 << 8)
#define MCI_CLK_PWRSAVE (1 << 9)
#define MCI_CLK_BYPASS (1 << 10)
#define MCI_WIDE_BUS (1 << 11)
#define MCI_4BIT_BUS (1 << 11)
/* 8bit wide buses supported in ST Micro versions */
#define MCI_ST_8BIT_BUS (1 << 12)
/* HW flow control on the ST Micro version */
#define MCI_FCEN (1 << 13)
#define MCI_ST_FCEN (1 << 13)
#define MMCIARGUMENT 0x008
#define MMCICOMMAND 0x00c