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Commit d7e9ab3c authored by Tuomas Tynkkynen's avatar Tuomas Tynkkynen Committed by Rob Herring
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mmc: Don't reference Linux-specific OF_GPIO_ACTIVE_LOW flag in DT binding 



OF_GPIO_ACTIVE_LOW is a Linux implementation detail. The binding
document should be referring to GPIO_ACTIVE_LOW found in
include/dt-bindings/gpio/gpio.h.

Signed-off-by: default avatarTuomas Tynkkynen <tuomas@tuxera.com>
Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent afc3bca4

Documentation/devicetree/bindings/mmc/mmc.txt

+2 −2
Original line number Diff line number Diff line
@@ -67,10 +67,10 @@ logic applies to the "wp-inverted" property. 
CD and WP lines can be implemented on the hardware in one of two ways: as GPIOs,

specified in cd-gpios and wp-gpios properties, or as dedicated pins. Polarity of

dedicated pins can be specified, using *-inverted properties. GPIO polarity can

also be specified using the OF_GPIO_ACTIVE_LOW flag. This creates an ambiguity

also be specified using the GPIO_ACTIVE_LOW flag. This creates an ambiguity

in the latter case. We choose to use the XOR logic for GPIO CD and WP lines.

This means, the two properties are "superimposed," for example leaving the

OF_GPIO_ACTIVE_LOW flag clear and specifying the respective *-inverted

GPIO_ACTIVE_LOW flag clear and specifying the respective *-inverted property

property results in a double-inversion and actually means the "normal" line

polarity is in effect.