diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 45c284a..f585622 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -476,6 +476,8 @@
 	depends on DEBUG_UART
 	default 0 if DEBUG_SBI_CONSOLE
 	default 0 if DEBUG_UART_SANDBOX
+	default 0xff000000 if DEBUG_UART_ZYNQ && ARCH_ZYNQMP
+	default 0xe0000000 if DEBUG_UART_ZYNQ && ARCH_ZYNQ
 	help
 	  This is the base address of your UART for memory-mapped UARTs.
 
@@ -502,6 +504,8 @@
 	default 0 if DEBUG_SBI_CONSOLE
 	default 0 if DEBUG_UART_SANDBOX
 	default 0 if DEBUG_MVEBU_A3700_UART
+	default 100000000 if DEBUG_UART_ZYNQ && ARCH_ZYNQMP
+	default 50000000 if DEBUG_UART_ZYNQ && ARCH_ZYNQ
 	help
 	  The UART input clock determines the speed of the internal UART
 	  circuitry. The baud rate is derived from this by dividing the input