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ARM: mmp: MMP2 drive strength FAST using wrong value

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Drive strength for MMP2 is a 2 bit value but because of the mapping in
plat-pxa/mfp.h needs to be shifted up one bit to handle real
location in mfp registers.  (MMP2 and PXA910 drive strength start
at bit 11 while PXA168 starts at bit 10).

Values 0, 1, 2, and 3 effectively need to be
0, 2, 4, and 6 to fit into register.  8 does not work.

Signed-off-by: Philip Rakity <prakity@marvell.com>
Tested-by: John Watlington <wad@laptop.org>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
This commit is contained in:
Philip Rakity 2011-01-07 11:26:52 -08:00 • committed by Eric Miao
commit ee309d3d6e
1 changed files with 1 additions and 1 deletions
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2
arch/arm/mach-mmp/include/mach/mfp-mmp2.h
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@ -6,7 +6,7 @@
#define MFP_DRIVE_VERY_SLOW (0x0 << 13)
#define MFP_DRIVE_SLOW (0x2 << 13)
#define MFP_DRIVE_MEDIUM (0x4 << 13)
#define MFP_DRIVE_FAST (0x8 << 13)
#define MFP_DRIVE_FAST (0x6 << 13)
/* GPIO */
#define GPIO0_GPIO MFP_CFG(GPIO0, AF0)