From 57fa7f2f4ef6f78ce1d30509c0d111aa3791b524 Mon Sep 17 00:00:00 2001
From: Daniel Santos <daniel.santos@pobox.com>
Date: Sun, 4 Nov 2018 20:24:32 -0600
Subject: gpio-ralink: Add support for GPIO as interrupt-controller

Signed-off-by: Daniel Santos <daniel.santos@pobox.com>
---
 Documentation/devicetree/bindings/gpio/gpio-ralink.txt | 6 ++++++
 drivers/gpio/gpio-ralink.c                             | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

--- a/Documentation/devicetree/bindings/gpio/gpio-ralink.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-ralink.txt
@@ -17,6 +17,9 @@ Required properties:
 
 Optional properties:
 - ralink,gpio-base : Specify the GPIO chips base number
+- interrupt-controller : marks this as an interrupt controller
+- #interrupt-cells : a standard two-cell interrupt flag, see
+  interrupt-controller/interrupts.txt
 
 Example:
 
@@ -28,6 +31,9 @@ Example:
 
 		reg = <0x600 0x34>;
 
+		interrupt-controller;
+		#interrupt-cells = <2>;
+
 		interrupt-parent = <&intc>;
 		interrupts = <6>;
 
--- a/drivers/gpio/gpio-ralink.c
+++ b/drivers/gpio/gpio-ralink.c
@@ -220,7 +220,7 @@ static int gpio_map(struct irq_domain *d
 }
 
 static const struct irq_domain_ops irq_domain_ops = {
-	.xlate = irq_domain_xlate_onecell,
+	.xlate = irq_domain_xlate_twocell,
 	.map = gpio_map,
 };
 
