pinctrl: elaborate a bit on arrangements in doc
authorLinus Walleij <linus.walleij@linaro.org>
Tue, 25 Jun 2013 14:17:15 +0000 (16:17 +0200)
committerLinus Walleij <linus.walleij@linaro.org>
Mon, 22 Jul 2013 23:23:14 +0000 (01:23 +0200)
commiteb6002d5e2eaf8b8c0ee11c8e47bbe7473b4c434
tree34f41aa6aaedfc8392acd9c6cb8718ea1cee6cfa
parentad81f0545ef01ea651886dddac4bef6cec930092
pinctrl: elaborate a bit on arrangements in doc

This elaborates a bit on the pin control and pin muxing
logic vs GPIO arangements in the hardware.

Inspired by some drawings in a mail from Christian Ruppert.
Both arrangements are confirmed to exist in practice.

Cc: Rob Landley <rob@landley.net>
Reviewed-by: Christian Ruppert <christian.ruppert@abilis.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Documentation/pinctrl.txt