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

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Swati Agarwal <swati.agarwal@oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/lemans-evk.dts | 44 +++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/lemans-evk.dts b/arch/arm64/boot/dts/qcom/lemans-evk.dts
index 90fce947ca7e..397052394930 100644
--- a/arch/arm64/boot/dts/qcom/lemans-evk.dts
+++ b/arch/arm64/boot/dts/qcom/lemans-evk.dts
@@ -546,6 +546,11 @@ expander0: gpio@38 {
 		reg = <0x38>;
 		#gpio-cells = <2>;
 		gpio-controller;
+		#interrupt-cells = <2>;
+		interrupt-controller;
+		interrupts-extended = <&tlmm 138 IRQ_TYPE_LEVEL_LOW>;
+		pinctrl-0 = <&expander0_int>;
+		pinctrl-names = "default";
 	};
 
 	expander1: gpio@39 {
@@ -553,6 +558,11 @@ expander1: gpio@39 {
 		reg = <0x39>;
 		#gpio-cells = <2>;
 		gpio-controller;
+		#interrupt-cells = <2>;
+		interrupt-controller;
+		interrupts-extended = <&tlmm 19 IRQ_TYPE_LEVEL_LOW>;
+		pinctrl-0 = <&expander1_int>;
+		pinctrl-names = "default";
 	};
 
 	expander2: gpio@3a {
@@ -560,6 +570,11 @@ expander2: gpio@3a {
 		reg = <0x3a>;
 		#gpio-cells = <2>;
 		gpio-controller;
+		#interrupt-cells = <2>;
+		interrupt-controller;
+		interrupts-extended = <&tlmm 139 IRQ_TYPE_LEVEL_LOW>;
+		pinctrl-0 = <&expander2_int>;
+		pinctrl-names = "default";
 	};
 
 	expander3: gpio@3b {
@@ -567,6 +582,11 @@ expander3: gpio@3b {
 		reg = <0x3b>;
 		#gpio-cells = <2>;
 		gpio-controller;
+		#interrupt-cells = <2>;
+		interrupt-controller;
+		interrupts-extended = <&tlmm 39 IRQ_TYPE_LEVEL_LOW>;
+		pinctrl-0 = <&expander3_int>;
+		pinctrl-names = "default";
 	};
 
 	eeprom@50 {
@@ -804,6 +824,30 @@ ethernet0_mdio: ethernet0-mdio-pins {
 		};
 	};
 
+	expander0_int: expander0-int-state {
+		pins = "gpio138";
+		function = "gpio";
+		bias-pull-up;
+	};
+
+	expander1_int: expander1-int-state {
+		pins = "gpio19";
+		function = "gpio";
+		bias-pull-up;
+	};
+
+	expander2_int: expander2-int-state {
+		pins = "gpio139";
+		function = "gpio";
+		bias-pull-up;
+	};
+
+	expander3_int: expander3-int-state {
+		pins = "gpio39";
+		function = "gpio";
+		bias-pull-up;
+	};
+
 	pcie0_default_state: pcie0-default-state {
 		clkreq-pins {
 			pins = "gpio1";
-- 
2.34.1