1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/nxp/interconnect/ls_ccn.c b/drivers/nxp/interconnect/ls_ccn.c
new file mode 100644
index 0000000..8f90325
--- /dev/null
+++ b/drivers/nxp/interconnect/ls_ccn.c
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2020 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+#include <arch.h>
+#include <ccn.h>
+
+#include <plat_arm.h>
+
+/******************************************************************************
+ * Helper function to place current master into coherency
+ *****************************************************************************/
+void plat_ls_interconnect_enter_coherency(unsigned int num_clusters)
+{
+	ccn_enter_snoop_dvm_domain(1ULL << MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
+
+	for (uint32_t index = 1U; index < num_clusters; index++) {
+		ccn_enter_snoop_dvm_domain(1ULL << index);
+	}
+}
+
+/******************************************************************************
+ * Helper function to remove current master from coherency
+ *****************************************************************************/
+void plat_ls_interconnect_exit_coherency(void)
+{
+	ccn_exit_snoop_dvm_domain(1ULL << MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
+}