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authorAlexander Stein <alexander.stein@systec-electronic.com>2014-12-01 08:26:00 +0100
committerLinus Walleij <linus.walleij@linaro.org>2014-12-03 14:34:45 +0100
commita4e635544f65021c346f2097daa0c8dd63dd6221 (patch)
tree0221e40e110afa800db6e4fa210fdcaf4e78f998 /Documentation
parent0e9a5edf5d01356fa4a561772a25d97b3fd13de6 (diff)
gpio: mcp23s08: Add option to configure IRQ output polarity as active high
Default is active low, but if property is specified in DT set INTPOL flag. Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/gpio/gpio-mcp23s08.txt2
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio-mcp23s08.txt b/Documentation/devicetree/bindings/gpio/gpio-mcp23s08.txt
index c306a2d0f2b1..f3332b9a8ed4 100644
--- a/Documentation/devicetree/bindings/gpio/gpio-mcp23s08.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-mcp23s08.txt
@@ -57,6 +57,8 @@ Optional device specific properties:
occurred on. If it is not set, the interrupt are only generated for the
bank they belong to.
On devices with only one interrupt output this property is useless.
+- microchip,irq-active-high: Sets the INTPOL flag in the IOCON register. This
+ configures the IRQ output polarity as active high.
Example I2C (with interrupt):
gpiom1: gpio@20 {

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