sata highbank: add bit-banged SGPIO driver support
authorMark Langsdorf <mark.langsdorf@calxeda.com>
Thu, 6 Jun 2013 12:52:41 +0000 (07:52 -0500)
committerTejun Heo <tj@kernel.org>
Thu, 6 Jun 2013 21:05:24 +0000 (14:05 -0700)
Highbank supports SGPIO by bit-banging out the SGPIO signals over
three GPIO pins defined in the DTB. Add support for this SGPIO
functionality.

Signed-off-by: Mark Langsdorf <mark.langsdorf@calxeda.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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