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authorCharles Keepax <ckeepax@opensource.wolfsonmicro.com>2017-05-23 15:47:31 +0100
committerLinus Walleij <linus.walleij@linaro.org>2017-05-29 11:10:07 +0200
commitca37978497194d55dedd28022403b053ad0d11b2 (patch)
tree99996f9cf6b9bed753e0cbe11c351fdad5e30090 /Documentation/devicetree/bindings/gpio/gpio.txt
parent27a49ed17e2245cacbdea88ad78b8494653e0338 (diff)
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gpio: of: Add documentation of new sleep standard GPIO specifiers
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>
Diffstat (limited to 'Documentation/devicetree/bindings/gpio/gpio.txt')
-rw-r--r--Documentation/devicetree/bindings/gpio/gpio.txt2
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio.txt b/Documentation/devicetree/bindings/gpio/gpio.txt
index bccb862398db..802402f6cc5d 100644
--- a/Documentation/devicetree/bindings/gpio/gpio.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio.txt
@@ -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
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