[PATCH 3/3] pinctrl: lpc1850-scu: document nxp,gpio-pin-interrupt

[Joachim Eastwood <manabian@xxxxxxxxx>]

Update devicetree documention for lpc1850-scu with the new
nxp,gpio-pin-interrupt property.

Signed-off-by: Joachim Eastwood <manabian@xxxxxxxxx>
---
 .../devicetree/bindings/pinctrl/nxp,lpc1850-scu.txt        | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Documentation/devicetree/bindings/pinctrl/nxp,lpc1850-scu.txt b/Documentation/devicetree/bindings/pinctrl/nxp,lpc1850-scu.txt
index df0309c57505..bd8b0c69fa44 100644
--- a/Documentation/devicetree/bindings/pinctrl/nxp,lpc1850-scu.txt
+++ b/Documentation/devicetree/bindings/pinctrl/nxp,lpc1850-scu.txt
@@ -22,6 +22,10 @@ The following generic nodes are supported:
  - input-schmitt-disable
  - slew-rate
 
+NXP specific properties:
+ - nxp,gpio-pin-interrupt : Assign pin to gpio pin interrupt controller
+			    irq number 0 to 7. See example below.
+
 Not all pins support all properties so either refer to the NXP 1850/4350
 user manual or the pin table in the pinctrl-lpc18xx driver for supported
 pin properties.
@@ -54,4 +58,14 @@ pinctrl: pinctrl@40086000 {
 			bias-disable;
 		};
 	};
+
+	gpio_joystick_pins: gpio-joystick-pins {
+		gpio_joystick_1_cfg {
+			pins =  "p9_0";
+			function = "gpio";
+			nxp,gpio-pin-interrupt = <0>;
+			input-enable;
+			bias-disable;
+		};
+	};
 };
-- 
1.8.0

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