[RFC PATCH 1/3] dt-bindings: gpio-rcar: Add optional use-alternative-interrupt property

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From: Torii Kenichi <torii.ken1@xxxxxxxxxxxxxx>

When setting this property, you must set alternate interrupt number in
the 'interrupts' property.

Signed-off-by: Torii Kenichi <torii.ken1@xxxxxxxxxxxxxx>
[erosca: tidy up the descriptions/comments]
Signed-off-by: Eugeniu Rosca <erosca@xxxxxxxxxxxxxx>
---
 Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt b/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt
index 10dce84b1545..aa5aea90431a 100644
--- a/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt
+++ b/Documentation/devicetree/bindings/gpio/renesas,gpio-rcar.txt
@@ -50,6 +50,9 @@ Optional properties:
   - clocks: Must contain a reference to the functional clock.  The property is
     mandatory if the hardware implements a controllable functional clock for
     the GPIO instance.
+  - use-alternative-interrupt: Use 'alternative' GPIO interrupt instead
+    of 'normal' GPIO interrupt. When you specify this property, you must
+    also change the 'interrupts' DT property.
 
   - gpio-reserved-ranges: See gpio.txt.
 
-- 
2.26.0




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