diff -Naur ori/arch/arm/boot/dts/bcm2711-rpi-4-b.dts patch/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
--- ori/arch/arm/boot/dts/bcm2711-rpi-4-b.dts	2021-09-20 11:06:56.930207829 -0400
+++ patch/arch/arm/boot/dts/bcm2711-rpi-4-b.dts	2021-09-21 13:14:23.956890232 -0400
@@ -83,22 +83,15 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
 	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
+	status = "okay";
+            rtc@0 {
+                compatible = "spidev,rtc-m41t93";
+                reg = <0>;
+                #address-cells = <1>;
+                #size-cells = <0>;
+                spi-max-frequency = <5000000>;
+            };
 
-	spidev0: spidev@0{
-		compatible = "spidev";
-		reg = <0>;	/* CE0 */
-		#address-cells = <1>;
-		#size-cells = <0>;
-		spi-max-frequency = <125000000>;
-	};
-
-	spidev1: spidev@1{
-		compatible = "spidev";
-		reg = <1>;	/* CE1 */
-		#address-cells = <1>;
-		#size-cells = <0>;
-		spi-max-frequency = <125000000>;
-	};
 };
 
 // =============================================