i2c: sunxi: add P2WI DT bindings documentation
authorBoris BREZILLON <boris.brezillon@free-electrons.com>
Wed, 11 Jun 2014 09:17:29 +0000 (11:17 +0200)
committerWolfram Sang <wsa@the-dreams.de>
Wed, 11 Jun 2014 22:24:05 +0000 (00:24 +0200)
P2WI (Push/Pull 2 Wire Interface) is an SMBus like bus used to communicate
with some PMICs (like the AXP221).

Document P2WI DT bindings which are pretty much the same as the one defined
for the marvell's mv64xxx controller.

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

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