ARM: mmp: MMP2 drive strength FAST using wrong value

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>

diff --git a/arch/arm/mach-mmp/include/mach/mfp-mmp2.h b/arch/arm/mach-mmp/include/mach/mfp-mmp2.h
index 117e30366087fdc486b4a73241a3bb5b6527ab84..4ad38629c3f6a9c1b986ffa0dd60cc87d7bb29a5 100644 (file)
--- a/arch/arm/mach-mmp/include/mach/mfp-mmp2.h
+++ b/arch/arm/mach-mmp/include/mach/mfp-mmp2.h
@@ -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)