gpio: of: Add documentation of new sleep standard GPIO specifiers
authorCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Tue, 23 May 2017 14:47:31 +0000 (15:47 +0100)
committerLinus Walleij <linus.walleij@linaro.org>
Mon, 29 May 2017 09:10:07 +0000 (11:10 +0200)
Add documentation of new GPIO specifiers indicating if the state of an
output pin should be maintained during sleep/low-power mode.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Documentation/devicetree/bindings/gpio/gpio.txt

index bccb862398db93eba098da59912a435fa59e2706..802402f6cc5d895fae65e85f09f87ad91b8f21e4 100644 (file)
@@ -80,6 +80,8 @@ Optional standard bitfield specifiers for the last cell:
            https://en.wikipedia.org/wiki/Single-ended_triode
 - Bit 2: 0 means open-source, 1 means open drain, see:
            https://en.wikipedia.org/wiki/Open_collector
+- Bit 3: 0 means the output should be maintained during sleep/low-power mode
+         1 means the output state can be lost during sleep/low-power mode
 
 1.1) GPIO specifier best practices
 ----------------------------------