diff --git a/tests/drivers/i2s/i2s_api/boards/lpcxpresso55s69_cpu0.conf b/tests/drivers/i2s/i2s_api/boards/lpcxpresso55s69_cpu0.conf
new file mode 100644
index 00000000000..f39c5265a47
--- /dev/null
+++ b/tests/drivers/i2s/i2s_api/boards/lpcxpresso55s69_cpu0.conf
@@ -0,0 +1,7 @@
+#
+# Copyright (c) 2021, NXP
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+CONFIG_I2S_TEST_SEPARATE_DEVICES=y
diff --git a/tests/drivers/i2s/i2s_speed/boards/lpcxpresso55s69_cpu0.conf b/tests/drivers/i2s/i2s_speed/boards/lpcxpresso55s69_cpu0.conf
new file mode 100644
index 00000000000..f39c5265a47
--- /dev/null
+++ b/tests/drivers/i2s/i2s_speed/boards/lpcxpresso55s69_cpu0.conf
@@ -0,0 +1,7 @@
+#
+# Copyright (c) 2021, NXP
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+CONFIG_I2S_TEST_SEPARATE_DEVICES=y