diff --git a/arch/arm/boot/dts/emev2.dtsi b/arch/arm/boot/dts/emev2.dtsi
index 67d86012a85c..96678ddbb4e6 100644
--- a/arch/arm/boot/dts/emev2.dtsi
+++ b/arch/arm/boot/dts/emev2.dtsi
@@ -212,6 +212,7 @@ gpio0: gpio@e0050000 {
 		interrupt-controller;
 		#interrupt-cells = <2>;
 	};
+
 	gpio1: gpio@e0050080 {
 		compatible = "renesas,em-gio";
 		reg = <0xe0050080 0x2c>, <0xe00500c0 0x20>;
@@ -224,6 +225,7 @@ gpio1: gpio@e0050080 {
 		interrupt-controller;
 		#interrupt-cells = <2>;
 	};
+
 	gpio2: gpio@e0050100 {
 		compatible = "renesas,em-gio";
 		reg = <0xe0050100 0x2c>, <0xe0050140 0x20>;
@@ -236,6 +238,7 @@ gpio2: gpio@e0050100 {
 		interrupt-controller;
 		#interrupt-cells = <2>;
 	};
+
 	gpio3: gpio@e0050180 {
 		compatible = "renesas,em-gio";
 		reg = <0xe0050180 0x2c>, <0xe00501c0 0x20>;
@@ -248,6 +251,7 @@ gpio3: gpio@e0050180 {
 		interrupt-controller;
 		#interrupt-cells = <2>;
 	};
+
 	gpio4: gpio@e0050200 {
 		compatible = "renesas,em-gio";
 		reg = <0xe0050200 0x2c>, <0xe0050240 0x20>;
diff --git a/arch/arm/boot/dts/r8a7790-lager.dts b/arch/arm/boot/dts/r8a7790-lager.dts
index 83cc619861b2..6ec2cf7eb354 100644
--- a/arch/arm/boot/dts/r8a7790-lager.dts
+++ b/arch/arm/boot/dts/r8a7790-lager.dts
@@ -325,10 +325,10 @@ i2cexio1: i2c-11 {
 		#size-cells = <0>;
 	};
 
-        /*
-         * IIC2 and I2C2 may be switched using pinmux.
-         * A fallback to GPIO is also provided.
-         */
+	/*
+	 * IIC2 and I2C2 may be switched using pinmux.
+	 * A fallback to GPIO is also provided.
+	 */
 	i2chdmi: i2c-12 {
 		compatible = "i2c-demux-pinctrl";
 		i2c-parent = <&iic2>, <&i2c2>, <&gpioi2c2>;
diff --git a/arch/arm/boot/dts/r8a7793-gose.dts b/arch/arm/boot/dts/r8a7793-gose.dts
index 42f3313e6988..48fbeb6340fd 100644
--- a/arch/arm/boot/dts/r8a7793-gose.dts
+++ b/arch/arm/boot/dts/r8a7793-gose.dts
@@ -65,81 +65,81 @@ gpio-keys {
 		compatible = "gpio-keys";
 
 		key-1 {
-		        gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
-		        linux,code = <KEY_1>;
-		        label = "SW2-1";
-		        wakeup-source;
-		        debounce-interval = <20>;
+			gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_1>;
+			label = "SW2-1";
+			wakeup-source;
+			debounce-interval = <20>;
 		};
 		key-2 {
-		        gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
-		        linux,code = <KEY_2>;
-		        label = "SW2-2";
-		        wakeup-source;
-		        debounce-interval = <20>;
+			gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_2>;
+			label = "SW2-2";
+			wakeup-source;
+			debounce-interval = <20>;
 		};
 		key-3 {
-		        gpios = <&gpio5 2 GPIO_ACTIVE_LOW>;
-		        linux,code = <KEY_3>;
-		        label = "SW2-3";
-		        wakeup-source;
-		        debounce-interval = <20>;
+			gpios = <&gpio5 2 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_3>;
+			label = "SW2-3";
+			wakeup-source;
+			debounce-interval = <20>;
 		};
 		key-4 {
-		        gpios = <&gpio5 3 GPIO_ACTIVE_LOW>;
-		        linux,code = <KEY_4>;
-		        label = "SW2-4";
-		        wakeup-source;
-		        debounce-interval = <20>;
+			gpios = <&gpio5 3 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_4>;
+			label = "SW2-4";
+			wakeup-source;
+			debounce-interval = <20>;
 		};
 		key-a {
-		        gpios = <&gpio7 0 GPIO_ACTIVE_LOW>;
-		        linux,code = <KEY_A>;
-		        label = "SW30";
-		        wakeup-source;
-		        debounce-interval = <20>;
+			gpios = <&gpio7 0 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_A>;
+			label = "SW30";
+			wakeup-source;
+			debounce-interval = <20>;
 		};
 		key-b {
-		        gpios = <&gpio7 1 GPIO_ACTIVE_LOW>;
-		        linux,code = <KEY_B>;
-		        label = "SW31";
-		        wakeup-source;
-		        debounce-interval = <20>;
+			gpios = <&gpio7 1 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_B>;
+			label = "SW31";
+			wakeup-source;
+			debounce-interval = <20>;
 		};
 		key-c {
-		        gpios = <&gpio7 2 GPIO_ACTIVE_LOW>;
-		        linux,code = <KEY_C>;
-		        label = "SW32";
-		        wakeup-source;
-		        debounce-interval = <20>;
+			gpios = <&gpio7 2 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_C>;
+			label = "SW32";
+			wakeup-source;
+			debounce-interval = <20>;
 		};
 		key-d {
-		        gpios = <&gpio7 3 GPIO_ACTIVE_LOW>;
-		        linux,code = <KEY_D>;
-		        label = "SW33";
-		        wakeup-source;
-		        debounce-interval = <20>;
+			gpios = <&gpio7 3 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_D>;
+			label = "SW33";
+			wakeup-source;
+			debounce-interval = <20>;
 		};
 		key-e {
-		        gpios = <&gpio7 4 GPIO_ACTIVE_LOW>;
-		        linux,code = <KEY_E>;
-		        label = "SW34";
-		        wakeup-source;
-		        debounce-interval = <20>;
+			gpios = <&gpio7 4 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_E>;
+			label = "SW34";
+			wakeup-source;
+			debounce-interval = <20>;
 		};
 		key-f {
-		        gpios = <&gpio7 5 GPIO_ACTIVE_LOW>;
-		        linux,code = <KEY_F>;
-		        label = "SW35";
-		        wakeup-source;
-		        debounce-interval = <20>;
+			gpios = <&gpio7 5 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_F>;
+			label = "SW35";
+			wakeup-source;
+			debounce-interval = <20>;
 		};
 		key-g {
-		        gpios = <&gpio7 6 GPIO_ACTIVE_LOW>;
-		        linux,code = <KEY_G>;
-		        label = "SW36";
-		        wakeup-source;
-		        debounce-interval = <20>;
+			gpios = <&gpio7 6 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_G>;
+			label = "SW36";
+			wakeup-source;
+			debounce-interval = <20>;
 		};
 	};