pinctrl: rza1: Switch to using "output-enable"
authorGeert Uytterhoeven <geert+renesas@glider.be>
Fri, 21 Aug 2020 11:14:01 +0000 (13:14 +0200)
committerGeert Uytterhoeven <geert+renesas@glider.be>
Tue, 15 Sep 2020 07:37:20 +0000 (09:37 +0200)
commita4eb6afa7c2c3795ec693cd806fd69593c9ecca7
treec1a9201dba2a77f045a578bc749f6d452b7cfd95
parentd89a08f52b0dd30d8e13c91886788cd42333dba7
pinctrl: rza1: Switch to using "output-enable"

For pins requiring software driven IO output operations, the RZ/A1 Pin
Controller uses either the "output-high" or "output-low" DT property to
enable the corresponding output buffer.  The actual line value doesn't
matter, as it is ignored.

Commit 425562429d4f3b13 ("pinctrl: generic: Add output-enable property")
introduced a new DT property for this specific use case.

Update the RZ/A1 Pin Controller DT bindings and driver to use this new
property instead.  Preserve backwards compatibility with old DTBs in the
driver, as this comes at a very small cost.

Notes:
  - The DT binding examples already used the new property,
  - There are no upstream users of the old properties.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Chris Brandt <chris.brandt@renesas.com>
Acked-by: Jacopo Mondi <jacopo@jmondi.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200821111401.4021-1-geert+renesas@glider.be
Documentation/devicetree/bindings/pinctrl/renesas,rza1-pinctrl.txt
drivers/pinctrl/sh-pfc/pinctrl-rza1.c