diff --git a/drivers/ptp/Kconfig b/drivers/ptp/Kconfig
index e82b4a678acb..823eae1b4b53 100644
--- a/drivers/ptp/Kconfig
+++ b/drivers/ptp/Kconfig
@@ -171,6 +171,7 @@ config PTP_1588_CLOCK_OCP
 	depends on PTP_1588_CLOCK
 	depends on HAS_IOMEM && PCI
 	depends on SPI && I2C && MTD
+	depends on !S390
 	imply SPI_MEM
 	imply SPI_XILINX
 	imply MTD_SPI_NOR