diff --git a/arch/arm/dts/r8a7794-silk.dts b/arch/arm/dts/r8a7794-silk.dts
index 4316087..50dad43 100644
--- a/arch/arm/dts/r8a7794-silk.dts
+++ b/arch/arm/dts/r8a7794-silk.dts
@@ -21,6 +21,7 @@
 /dts-v1/;
 #include "r8a7794.dtsi"
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 
 / {
 	model = "SILK";
@@ -28,6 +29,8 @@
 
 	aliases {
 		serial0 = &scif2;
+		i2c9 = &gpioi2c1;
+		i2c10 = &i2chdmi;
 	};
 
 	chosen {
@@ -40,6 +43,60 @@
 		reg = <0 0x40000000 0 0x40000000>;
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		key-3 {
+			gpios = <&gpio5 10 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_3>;
+			label = "SW3";
+			wakeup-source;
+			debounce-interval = <20>;
+		};
+		key-4 {
+			gpios = <&gpio5 11 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_4>;
+			label = "SW4";
+			wakeup-source;
+			debounce-interval = <20>;
+		};
+		key-6 {
+			gpios = <&gpio5 12 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_6>;
+			label = "SW6";
+			wakeup-source;
+			debounce-interval = <20>;
+		};
+		key-a {
+			gpios = <&gpio3 9 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_A>;
+			label = "SW12-1";
+			wakeup-source;
+			debounce-interval = <20>;
+		};
+		key-b {
+			gpios = <&gpio3 10 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_B>;
+			label = "SW12-2";
+			wakeup-source;
+			debounce-interval = <20>;
+		};
+		key-c {
+			gpios = <&gpio3 11 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_C>;
+			label = "SW12-3";
+			wakeup-source;
+			debounce-interval = <20>;
+		};
+		key-d {
+			gpios = <&gpio3 12 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_D>;
+			label = "SW12-4";
+			wakeup-source;
+			debounce-interval = <20>;
+		};
+	};
+
 	d3_3v: regulator-d3-3v {
 		compatible = "regulator-fixed";
 		regulator-name = "D3.3V";
@@ -150,6 +207,84 @@
 			clocks = <&x9_clk>;
 		};
 	};
+
+	gpioi2c1: i2c-9 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "i2c-gpio";
+		status = "disabled";
+		scl-gpios = <&gpio4 0 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+		sda-gpios = <&gpio4 1 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+		i2c-gpio,delay-us = <5>;
+	};
+
+	/*
+	 * A fallback to GPIO is provided for I2C1.
+	 */
+	i2chdmi: i2c-10 {
+		compatible = "i2c-demux-pinctrl";
+		i2c-parent = <&i2c1>, <&gpioi2c1>;
+		i2c-bus-name = "i2c-hdmi";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ak4643: codec@12 {
+			compatible = "asahi-kasei,ak4643";
+			#sound-dai-cells = <0>;
+			reg = <0x12>;
+		};
+
+		composite-in@20 {
+			compatible = "adi,adv7180";
+			reg = <0x20>;
+			remote = <&vin0>;
+
+			port {
+				adv7180: endpoint {
+					bus-width = <8>;
+					remote-endpoint = <&vin0ep>;
+				};
+			};
+		};
+
+		hdmi@39 {
+			compatible = "adi,adv7511w";
+			reg = <0x39>;
+			interrupt-parent = <&gpio5>;
+			interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
+
+			adi,input-depth = <8>;
+			adi,input-colorspace = "rgb";
+			adi,input-clock = "1x";
+			adi,input-style = <1>;
+			adi,input-justification = "evenly";
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+					adv7511_in: endpoint {
+						remote-endpoint = <&du_out_rgb0>;
+					};
+				};
+
+				port@1 {
+					reg = <1>;
+					adv7511_out: endpoint {
+						remote-endpoint = <&hdmi_con>;
+					};
+				};
+			};
+		};
+
+		eeprom@50 {
+			compatible = "renesas,r1ex24002", "atmel,24c02";
+			reg = <0x50>;
+			pagesize = <16>;
+		};
+	};
 };
 
 &extal_clk {
@@ -265,61 +400,9 @@
 
 &i2c1 {
 	pinctrl-0 = <&i2c1_pins>;
-	pinctrl-names = "default";
+	pinctrl-names = "i2c-hdmi";
 
-	status = "okay";
 	clock-frequency = <400000>;
-
-	ak4643: codec@12 {
-		compatible = "asahi-kasei,ak4643";
-		#sound-dai-cells = <0>;
-		reg = <0x12>;
-	};
-
-	composite-in@20 {
-		compatible = "adi,adv7180";
-		reg = <0x20>;
-		remote = <&vin0>;
-
-		port {
-			adv7180: endpoint {
-				bus-width = <8>;
-				remote-endpoint = <&vin0ep>;
-			};
-		};
-	};
-
-	hdmi@39 {
-		compatible = "adi,adv7511w";
-		reg = <0x39>;
-		interrupt-parent = <&gpio5>;
-		interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
-
-		adi,input-depth = <8>;
-		adi,input-colorspace = "rgb";
-		adi,input-clock = "1x";
-		adi,input-style = <1>;
-		adi,input-justification = "evenly";
-
-		ports {
-			#address-cells = <1>;
-			#size-cells = <0>;
-
-			port@0 {
-				reg = <0>;
-				adv7511_in: endpoint {
-					remote-endpoint = <&du_out_rgb0>;
-				};
-			};
-
-			port@1 {
-				reg = <1>;
-				adv7511_out: endpoint {
-					remote-endpoint = <&hdmi_con>;
-				};
-			};
-		};
-	};
 };
 
 &mmcif0 {