NFC: trf7970a: Document the 'en2-rf-quirk' DT property
authorMark A. Greer <mgreer@animalcreek.com>
Fri, 8 Aug 2014 00:41:46 +0000 (17:41 -0700)
committerSamuel Ortiz <sameo@linux.intel.com>
Sun, 31 Aug 2014 22:06:56 +0000 (00:06 +0200)
commit6afed0eb8c4158c99845f8d30cd5c3fd8e4855d9
tree852fba64bf39af6c6f3ba2d075c801e710c9f57f
parent95064bd95a822659f4a606b485aba5009d70fc88
NFC: trf7970a: Document the 'en2-rf-quirk' DT property

Current versions of the trf7970a have an erratum where
the EN2 pin must be kept low.  If it isn't kept low,
it will generate an RF field even when in passive
target mode.  To work around this issue, create the
'en2-rf-quirk' device tree property to indicate that
the trf7970a that the driver is using has this erratum.

Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Documentation/devicetree/bindings/net/nfc/trf7970a.txt