diff --git a/tests/drivers/spi/spi_loopback/boards/nrf54h20dk_nrf54h20_cpuapp_fast.overlay b/tests/drivers/spi/spi_loopback/boards/nrf54h20dk_nrf54h20_cpuapp_fast.overlay
index de624ab3c66..bdc427ebca3 100644
--- a/tests/drivers/spi/spi_loopback/boards/nrf54h20dk_nrf54h20_cpuapp_fast.overlay
+++ b/tests/drivers/spi/spi_loopback/boards/nrf54h20dk_nrf54h20_cpuapp_fast.overlay
@@ -40,7 +40,7 @@
 		reg = <0>;
 		spi-max-frequency = <DT_FREQ_M(4)>;
 	};
-	fast@0 {
+	dut_fast: fast@0 {
 		compatible = "test-spi-loopback-fast";
 		reg = <0>;
 		spi-max-frequency = <DT_FREQ_M(8)>;
diff --git a/tests/drivers/spi/spi_loopback/boards/nrf54l15dk_nrf54l15_cpuapp.overlay b/tests/drivers/spi/spi_loopback/boards/nrf54l15dk_nrf54l15_cpuapp.overlay
index 8dcf6fd190d..42d9703e866 100644
--- a/tests/drivers/spi/spi_loopback/boards/nrf54l15dk_nrf54l15_cpuapp.overlay
+++ b/tests/drivers/spi/spi_loopback/boards/nrf54l15dk_nrf54l15_cpuapp.overlay
@@ -23,6 +23,8 @@
 	};
 };
 
+/delete-node/ &mx25r64;
+
 &spi00 {
 	status = "okay";
 	pinctrl-0 = <&spi00_default>;
@@ -35,7 +37,7 @@
 		reg = <0>;
 		spi-max-frequency = <DT_FREQ_M(2)>;
 	};
-	fast@0 {
+	dut_fast: fast@0 {
 		compatible = "test-spi-loopback-fast";
 		reg = <0>;
 		spi-max-frequency = <DT_FREQ_M(4)>;
diff --git a/tests/drivers/spi/spi_loopback/boards/nrf54l20pdk_nrf54l20_cpuapp.overlay b/tests/drivers/spi/spi_loopback/boards/nrf54l20pdk_nrf54l20_cpuapp.overlay
index 9dc27d1af05..48840969d8e 100644
--- a/tests/drivers/spi/spi_loopback/boards/nrf54l20pdk_nrf54l20_cpuapp.overlay
+++ b/tests/drivers/spi/spi_loopback/boards/nrf54l20pdk_nrf54l20_cpuapp.overlay
@@ -35,7 +35,7 @@
 		reg = <0>;
 		spi-max-frequency = <DT_FREQ_M(2)>;
 	};
-	fast@0 {
+	dut_fast: fast@0 {
 		compatible = "test-spi-loopback-fast";
 		reg = <0>;
 		spi-max-frequency = <DT_FREQ_M(4)>;
diff --git a/tests/drivers/spi/spi_loopback/boards/nrf_at_16mhz.overlay b/tests/drivers/spi/spi_loopback/boards/nrf_at_16mhz.overlay
new file mode 100644
index 00000000000..b2cec530184
--- /dev/null
+++ b/tests/drivers/spi/spi_loopback/boards/nrf_at_16mhz.overlay
@@ -0,0 +1,10 @@
+/*
+ * Copyright (c) 2025 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+
+&dut_fast {
+	spi-max-frequency = <DT_FREQ_M(16)>;
+};
diff --git a/tests/drivers/spi/spi_loopback/boards/nrf_at_32mhz.overlay b/tests/drivers/spi/spi_loopback/boards/nrf_at_32mhz.overlay
new file mode 100644
index 00000000000..37d93f21a24
--- /dev/null
+++ b/tests/drivers/spi/spi_loopback/boards/nrf_at_32mhz.overlay
@@ -0,0 +1,10 @@
+/*
+ * Copyright (c) 2025 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+
+&dut_fast {
+	spi-max-frequency = <DT_FREQ_M(32)>;
+};
diff --git a/tests/drivers/spi/spi_loopback/boards/nrf_at_64mhz.overlay b/tests/drivers/spi/spi_loopback/boards/nrf_at_64mhz.overlay
new file mode 100644
index 00000000000..a462ad73fde
--- /dev/null
+++ b/tests/drivers/spi/spi_loopback/boards/nrf_at_64mhz.overlay
@@ -0,0 +1,10 @@
+/*
+ * Copyright (c) 2025 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+
+&dut_fast {
+	spi-max-frequency = <DT_FREQ_M(64)>;
+};
diff --git a/tests/drivers/spi/spi_loopback/boards/nrf_at_8mhz.overlay b/tests/drivers/spi/spi_loopback/boards/nrf_at_8mhz.overlay
new file mode 100644
index 00000000000..d01d89dc6ec
--- /dev/null
+++ b/tests/drivers/spi/spi_loopback/boards/nrf_at_8mhz.overlay
@@ -0,0 +1,10 @@
+/*
+ * Copyright (c) 2025 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+
+&dut_fast {
+	spi-max-frequency = <DT_FREQ_M(8)>;
+};
diff --git a/tests/drivers/spi/spi_loopback/testcase.yaml b/tests/drivers/spi/spi_loopback/testcase.yaml
index cca57977ee8..c21d54fb5b1 100644
--- a/tests/drivers/spi/spi_loopback/testcase.yaml
+++ b/tests/drivers/spi/spi_loopback/testcase.yaml
@@ -202,10 +202,48 @@ tests:
     filter: CONFIG_DT_HAS_NXP_FLEXIO_ENABLED and
             CONFIG_DT_HAS_NXP_FLEXIO_SPI_ENABLED
     platform_allow: mimxrt1064_evk
-  drivers.spi.nrf_fast:
+  drivers.spi.nrf54h_fast_8mhz:
     extra_args: DTC_OVERLAY_FILE="boards/nrf54h20dk_nrf54h20_cpuapp_fast.overlay"
     platform_allow:
       - nrf54h20dk/nrf54h20/cpuapp
+  drivers.spi.nrf54h_fast_16mhz:
+    extra_args:
+      - DTC_OVERLAY_FILE="boards/nrf54h20dk_nrf54h20_cpuapp_fast.overlay"
+      - EXTRA_DTC_OVERLAY_FILE="boards/nrf_at_16mhz.overlay"
+    platform_allow:
+      - nrf54h20dk/nrf54h20/cpuapp
+  drivers.spi.nrf54h_fast_32mhz:
+    extra_args:
+      - DTC_OVERLAY_FILE="boards/nrf54h20dk_nrf54h20_cpuapp_fast.overlay"
+      - EXTRA_DTC_OVERLAY_FILE="boards/nrf_at_32mhz.overlay"
+    platform_allow:
+      - nrf54h20dk/nrf54h20/cpuapp
+  drivers.spi.nrf54h_fast_64mhz:
+    extra_args:
+      - DTC_OVERLAY_FILE="boards/nrf54h20dk_nrf54h20_cpuapp_fast.overlay"
+      - EXTRA_DTC_OVERLAY_FILE="boards/nrf_at_64mhz.overlay"
+    platform_allow:
+      - nrf54h20dk/nrf54h20/cpuapp
+  drivers.spi.nrf54l_8mhz:
+    extra_args: EXTRA_DTC_OVERLAY_FILE="boards/nrf_at_8mhz.overlay"
+    platform_allow:
+      - nrf54l15dk/nrf54l15/cpuapp
+      - nrf54l20pdk/nrf54l20/cpuapp
+  drivers.spi.nrf54l_16mhz:
+    extra_args: EXTRA_DTC_OVERLAY_FILE="boards/nrf_at_16mhz.overlay"
+    platform_allow:
+      - nrf54l15dk/nrf54l15/cpuapp
+      - nrf54l20pdk/nrf54l20/cpuapp
+  drivers.spi.nrf54l_32mhz:
+    extra_args: EXTRA_DTC_OVERLAY_FILE="boards/nrf_at_32mhz.overlay"
+    platform_allow:
+      - nrf54l15dk/nrf54l15/cpuapp
+      - nrf54l20pdk/nrf54l20/cpuapp
+  drivers.spi.nrf54l_64mhz:
+    extra_args: EXTRA_DTC_OVERLAY_FILE="boards/nrf_at_64mhz.overlay"
+    platform_allow:
+      - nrf54l15dk/nrf54l15/cpuapp
+      - nrf54l20pdk/nrf54l20/cpuapp
   drivers.spi.ke1xz_flexio_spi.loopback:
     extra_args: DTC_OVERLAY_FILE="boards/frdm_ke1xz_flexio_spi.overlay"
     filter: CONFIG_DT_HAS_NXP_FLEXIO_ENABLED and