diff --git a/drivers/misc/lan966x_pci.dtso b/drivers/misc/lan966x_pci.dtso
index 7b196b0a0eb6..7bb726550caf 100644
--- a/drivers/misc/lan966x_pci.dtso
+++ b/drivers/misc/lan966x_pci.dtso
@@ -135,7 +135,7 @@ lan966x_phy1: ethernet-lan966x_phy@2 {
 
 				switch: switch@e0000000 {
 					compatible = "microchip,lan966x-switch";
-					reg = <0xe0000000 0x0100000>,
+					reg = <0xe0000000 0x0800000>,
 					      <0xe2000000 0x0800000>;
 					reg-names = "cpu", "gcb";