ARM: dts: fix pinctrl for s2mps11-irq on exynos5420-arndale-octa

On Arndale Octa the S2MPS11 RTC alarm interrupt was not handled
at all because of wrong configuration of interrupt and gpx3-2.
1. Interrupt is signaled by falling edge.
2. This GPIO line is hard-wired on the board to PVDD_APIO_1V8
   through a resistor so pull-up/down must be disabled.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>

diff --git a/arch/arm/boot/dts/exynos5420-arndale-octa.dts b/arch/arm/boot/dts/exynos5420-arndale-octa.dts
index b82b6fa..4efcf7c 100644 (file)
--- a/arch/arm/boot/dts/exynos5420-arndale-octa.dts
+++ b/arch/arm/boot/dts/exynos5420-arndale-octa.dts
@@ -90,7 +90,9 @@
                        s2mps11,buck4-ramp-enable = <1>;
 
                        interrupt-parent = <&gpx3>;
-                       interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
+                       interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&s2mps11_irq>;
 
                        s2mps11_osc: clocks {
                                #clock-cells = <1>;
@@ -376,3 +378,12 @@
 &cci {
        status = "disabled";
 };
+
+&pinctrl_0 {
+       s2mps11_irq: s2mps11-irq {
+               samsung,pins = "gpx3-2";
+               samsung,pin-function = <0xf>;
+               samsung,pin-pud = <0>;
+               samsung,pin-drv = <0>;
+       };
+};