diff --git a/target/linux/ipq806x/files-4.14/arch/arm/boot/dts/qcom-ipq8064-mtfi-m520.dts b/target/linux/ipq806x/files-4.14/arch/arm/boot/dts/qcom-ipq8064-mtfi-m520.dts
index 29655c61b2..7511d4e100 100644
--- a/target/linux/ipq806x/files-4.14/arch/arm/boot/dts/qcom-ipq8064-mtfi-m520.dts
+++ b/target/linux/ipq806x/files-4.14/arch/arm/boot/dts/qcom-ipq8064-mtfi-m520.dts
@@ -134,24 +134,34 @@
 			};
 		};
 
-		gsbi@16300000 {
+		gsbi2: gsbi@12480000 {
 			qcom,mode = <GSBI_PROT_I2C_UART>;
 			status = "ok";
-			serial@16340000 {
+			uart2: serial@12490000 {
 				status = "ok";
 			};
-			/*
-			 * The i2c device on gsbi4 should not be enabled.
-			 * On ipq806x designs gsbi4 i2c is meant for exclusive
-			 * RPM usage. Turning this on in kernel manifests as
-			 * i2c failure for the RPM.
-			 */
 		};
 
 		gsbi5: gsbi@1a200000 {
 			qcom,mode = <GSBI_PROT_SPI>;
 			status = "ok";
 
+			i2c@1a280000 {
+				status = "ok";
+
+				lm75@48 {
+					status = "okay";
+					compatible = "lm75";
+					reg = <0x48>;
+				};
+
+				pcf8563: rtc@51 {
+					status = "okay";
+					compatible = "nxp,pcf8563";
+					reg = <0x51>;
+				};
+			};
+
 			spi4: spi@1a280000 {
 				status = "ok";
 
diff --git a/target/linux/ipq806x/files-4.19/arch/arm/boot/dts/qcom-ipq8064-mtfi-m520.dts b/target/linux/ipq806x/files-4.19/arch/arm/boot/dts/qcom-ipq8064-mtfi-m520.dts
index b89201e578..7511d4e100 100644
--- a/target/linux/ipq806x/files-4.19/arch/arm/boot/dts/qcom-ipq8064-mtfi-m520.dts
+++ b/target/linux/ipq806x/files-4.19/arch/arm/boot/dts/qcom-ipq8064-mtfi-m520.dts
@@ -134,24 +134,34 @@
 			};
 		};
 
-		gsbi@16300000 {
+		gsbi2: gsbi@12480000 {
 			qcom,mode = <GSBI_PROT_I2C_UART>;
 			status = "ok";
-			serial@16340000 {
+			uart2: serial@12490000 {
 				status = "ok";
 			};
-			/*
-			 * The i2c device on gsbi4 should not be enabled.
-			 * On ipq806x designs gsbi4 i2c is meant for exclusive
-			 * RPM usage. Turning this on in kernel manifests as
-			 * i2c failure for the RPM.
-			 */
 		};
 
 		gsbi5: gsbi@1a200000 {
 			qcom,mode = <GSBI_PROT_SPI>;
 			status = "ok";
 
+			i2c@1a280000 {
+				status = "ok";
+
+				lm75@48 {
+					status = "okay";
+					compatible = "lm75";
+					reg = <0x48>;
+				};
+
+				pcf8563: rtc@51 {
+					status = "okay";
+					compatible = "nxp,pcf8563";
+					reg = <0x51>;
+				};
+			};
+
 			spi4: spi@1a280000 {
 				status = "ok";
 
@@ -161,10 +171,10 @@
 				cs-gpios = <&qcom_pinmux 20 GPIO_ACTIVE_HIGH>;
 
 				flash: m25p80@0 {
-					compatible = "jedec,spi-nor";
+					compatible = "s25fl256s1";
 					#address-cells = <1>;
 					#size-cells = <1>;
-					spi-max-frequency = <51200000>;
+					spi-max-frequency = <50000000>;
 					reg = <0>;
 
 					SBL1@0 {
diff --git a/target/linux/ipq806x/image/Makefile b/target/linux/ipq806x/image/Makefile
index cb39da6f1b..bae96017ea 100644
--- a/target/linux/ipq806x/image/Makefile
+++ b/target/linux/ipq806x/image/Makefile
@@ -275,7 +275,8 @@ define Device/ruijie_rg-mtfi-m520
 	IMAGE/sysupgrade.bin/squashfs := append-rootfs | pad-to $$$${BLOCKSIZE} | sysupgrade-tar rootfs=$$$$@ | append-metadata
 	IMAGE/mmcblk0p2-kernel.bin := append-kernel | pad-to $$$${KERNEL_SIZE}
 	IMAGE/mmcblk0p3-rootfs.bin := append-rootfs | pad-rootfs
-	DEVICE_PACKAGES := ath10k-firmware-qca988x-ct blockd e2fsprogs f2fs-tools kmod-fs-ext4 kmod-fs-f2fs losetup
+	DEVICE_PACKAGES := ath10k-firmware-qca988x-ct blockd e2fsprogs f2fs-tools \
+	kmod-hwmon-lm75 kmod-fs-ext4 kmod-fs-f2fs kmod-rtc-pcf8563 kmod-usb-serial losetup
 endef
 TARGET_DEVICES += ruijie_rg-mtfi-m520