diff --git a/tests/drivers/spi/spi_loopback/boards/lpcxpresso54114_m4.conf b/tests/drivers/spi/spi_loopback/boards/lpcxpresso54114_m4.conf
index 8288366d6b9..9731c8285c6 100644
--- a/tests/drivers/spi/spi_loopback/boards/lpcxpresso54114_m4.conf
+++ b/tests/drivers/spi/spi_loopback/boards/lpcxpresso54114_m4.conf
@@ -6,5 +6,3 @@
 
 CONFIG_SPI_LOOPBACK_DRV_NAME="FLEXCOMM_5"
 CONFIG_SPI_LOOPBACK_SLAVE_NUMBER=2
-CONFIG_SPI_LOOPBACK_SLOW_FREQ=5000
-CONFIG_SPI_LOOPBACK_FAST_FREQ=160000
diff --git a/tests/drivers/spi/spi_loopback/boards/lpcxpresso55s69_cpu0.conf b/tests/drivers/spi/spi_loopback/boards/lpcxpresso55s69_cpu0.conf
index e135b11ded1..80e046320ce 100644
--- a/tests/drivers/spi/spi_loopback/boards/lpcxpresso55s69_cpu0.conf
+++ b/tests/drivers/spi/spi_loopback/boards/lpcxpresso55s69_cpu0.conf
@@ -6,5 +6,3 @@
 
 CONFIG_SPI_LOOPBACK_DRV_NAME="HS_LSPI"
 CONFIG_SPI_LOOPBACK_SLAVE_NUMBER=1
-CONFIG_SPI_LOOPBACK_SLOW_FREQ=5000
-CONFIG_SPI_LOOPBACK_FAST_FREQ=160000