diff --git a/src/soc/intel/alderlake/acpi/tcss.asl b/src/soc/intel/alderlake/acpi/tcss.asl
index 2d09c6438a..8dfa8750c0 100644
--- a/src/soc/intel/alderlake/acpi/tcss.asl
+++ b/src/soc/intel/alderlake/acpi/tcss.asl
@@ -321,7 +321,7 @@ Scope (_GPE)
 	}
 }
 
-Scope (\_SB.PCI0)
+Scope (\_SB)
 {
 	Device (IOM)
 	{
@@ -334,7 +334,10 @@ Scope (\_SB.PCI0)
 		/* ACPI_STATUS_DEVICE_HIDDEN_ON */
 		Name (_STA, 0xB)
 	}
+}
 
+Scope (\_SB.PCI0)
+{
 	/*
 	 * Operation region defined to access the TCSS_DEVEN. Get the MCHBAR in offset
 	 * 0x48 in B0:D0:F0. TCSS device enable base address is in offset 0x7090 of MCHBAR.