diff --git a/src/mainboard/starlabs/starfighter/variants/rpl/devicetree.cb b/src/mainboard/starlabs/starfighter/variants/rpl/devicetree.cb
index 7148e7280a..57a73276a1 100644
--- a/src/mainboard/starlabs/starfighter/variants/rpl/devicetree.cb
+++ b/src/mainboard/starlabs/starfighter/variants/rpl/devicetree.cb
@@ -241,6 +241,8 @@ chip soc/intel/alderlake
 				.clk_src				= 1,
 				.clk_req				= 1,
 				.flags					= PCIE_RP_LTR | PCIE_RP_AER,
+				.pcie_rp_aspm				= ASPM_L0S_L1,
+				.PcieRpL1Substates			= L1_SS_L1_2,
 				.pcie_rp_detect_timeout_ms		= 50,
 			}"