serial: Add Xilinx ZynqMP PS uart driver

Add ZynqMP PS uart driver for Xilinx ZynqMP platform

Signed-off-by: Wendy Liang <wendy.liang@xilinx.com>

CODEOWNERS

@@ -154,6 +154,8 @@
 /drivers/serial/uart_liteuart.c           @mateusz-holenko @kgugala @pgielda
 /drivers/serial/Kconfig.rtt               @carlescufi @pkral78
 /drivers/serial/uart_rtt.c                @carlescufi @pkral78
+/drivers/serial/Kconfig.xlnx              @wjliang
+/drivers/serial/uart_xlnx_ps.c            @wjliang
 /drivers/net/                             @jukkar @tbursztyka
 /drivers/ptp_clock/                       @jukkar
 /drivers/spi/                             @tbursztyka

drivers/serial/CMakeLists.txt

@@ -30,6 +30,7 @@ zephyr_library_sources_if_kconfig(uart_pl011.c)
 zephyr_library_sources_if_kconfig(uart_rv32m1_lpuart.c)
 zephyr_library_sources_if_kconfig(uart_liteuart.c)
 zephyr_library_sources_ifdef(CONFIG_UART_RTT_DRIVER uart_rtt.c)
+zephyr_library_sources_if_kconfig(uart_xlnx_ps.c)
 
 zephyr_library_sources_ifdef(CONFIG_USERSPACE   uart_handlers.c)
 

drivers/serial/Kconfig

@@ -127,4 +127,6 @@ source "drivers/serial/Kconfig.litex"
 
 source "drivers/serial/Kconfig.rtt"
 
+source "drivers/serial/Kconfig.xlnx"
+
 endif # SERIAL

drivers/serial/Kconfig.xlnx

@@ -0,0 +1,13 @@
+# Kconfig - Xilinx UART configuration
+#
+# Copyright (c) 2018 Xilinx Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+menuconfig UART_XLNX_PS
+	bool "Xilinx serial driver for MPSoC"
+	depends on SOC_XILINX_ZYNQMP
+	select SERIAL_HAS_DRIVER
+	help
+	  This option enables the UART driver for Xilinx MPSoC platforms.