diff --git a/src/soc/intel/xeon_sp/cpx/chip.c b/src/soc/intel/xeon_sp/cpx/chip.c
index a3d15ab..dd9c113 100644
--- a/src/soc/intel/xeon_sp/cpx/chip.c
+++ b/src/soc/intel/xeon_sp/cpx/chip.c
@@ -115,7 +115,9 @@
 
 static void set_pcu_locks(void)
 {
-	for (uint32_t socket = 0; socket < soc_get_num_cpus(); ++socket) {
+	for (uint32_t socket = 0; socket < CONFIG_MAX_SOCKET; ++socket) {
+		if (!soc_cpu_is_enabled(socket))
+			continue;
 		uint32_t bus = get_socket_stack_busno(socket, PCU_IIO_STACK);
 
 		/* configure PCU_CR0_FUN csrs */