[RESEND-v2-PATCH] ARM: dts: Add missing irq pinctrl for max77686 on smdk5250

[Pankaj Dubey]

From: Yadwinder Singh Brar <yadi.brar at samsung.com>

This patch adds pinctrl configuration for using configuring gpx3-2 as an
external interrupt from max77686. Though max77686 RTC is enabled and gets
probed by default, it doesnt work as its unable to get interrupt.

This patch makes max77686 RTC work and also configures it as wakeup source.

Signed-off-by: Yadwinder Singh Brar <yadi.brar at samsung.com>
[pankaj.dubey: resubmitted after rebasing to latest kgene tree]
Signed-off-by: Pankaj Dubey <pankaj.dubey at samsung.com>
Reviewed-by: Javier Martinez Canillas <javier.martinez at collabora.co.uk>
Tested-by: Pankaj Dubey <pankaj.dubey at samsung.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski at samsung.com>
---
Initial version of this patch was part of following series, though
they are not dependent on each other, resubmitting after rebasing
and detaching second one from first patch in the series [1]

[1]: http://lists.infradead.org/pipermail/linux-arm-kernel/2014-November/303652.html

v2:
 -Included my Signed-off-by for touching this patch.
 -Included Acked-by from Krzysztof Kozlowski.

 arch/arm/boot/dts/exynos5250-smdk5250.dts | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm/boot/dts/exynos5250-smdk5250.dts b/arch/arm/boot/dts/exynos5250-smdk5250.dts
index bc27cc2..4fe186d 100644
--- a/arch/arm/boot/dts/exynos5250-smdk5250.dts
+++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts
@@ -131,6 +131,9 @@
 		reg = <0x09>;
 		interrupt-parent = <&gpx3>;
 		interrupts = <2 IRQ_TYPE_NONE>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&max77686_irq>;
+		wakeup-source;
 
 		voltage-regulators {
 			ldo1_reg: LDO1 {
@@ -410,3 +413,12 @@
 		};
 	};
 };
+
+&pinctrl_0 {
+	max77686_irq: max77686-irq {
+		samsung,pins = "gpx3-2";
+		samsung,pin-function = <0xf>;
+		samsung,pin-pud = <0>;
+		samsung,pin-drv = <0>;
+	};
+};
-- 
2.2.0