[PATCH 1/2] arm64: dts: qcom: lemans-evk: Enable GPIO expander3 interrupt for Lemans EVK

[Swati Agarwal]

Enable PCA9538 expander3 as interrupt controller on Lemans EVK and
configures the corresponding TLMM pins via pinctrl to operate as GPIO
inputs with internal pull-ups.

Signed-off-by: Swati Agarwal <swati.agarwal@xxxxxxxxxxxxxxxx>
---
 arch/arm64/boot/dts/qcom/lemans-evk.dts | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/lemans-evk.dts b/arch/arm64/boot/dts/qcom/lemans-evk.dts
index a549f7fe53a1..473cc2a81670 100644
--- a/arch/arm64/boot/dts/qcom/lemans-evk.dts
+++ b/arch/arm64/boot/dts/qcom/lemans-evk.dts
@@ -649,6 +649,12 @@ expander3: gpio@3b {
 		reg = <0x3b>;
 		#gpio-cells = <2>;
 		gpio-controller;
+		#interrupt-cells = <2>;
+		interrupt-controller;
+		interrupt-parent = <&tlmm>;
+		interrupts = <39 IRQ_TYPE_LEVEL_LOW>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&expander3_int>;
 	};
 
 	eeprom@50 {
@@ -894,6 +900,13 @@ ethernet0_mdio: ethernet0-mdio-pins {
 		};
 	};
 
+	expander3_int: expander3-int-state {
+		pins = "gpio39";
+		function = "gpio";
+		input-enable;
+		bias-pull-up;
+	};
+
 	pcie0_default_state: pcie0-default-state {
 		clkreq-pins {
 			pins = "gpio1";
-- 
2.34.1