drivers: serial: introduce new Telink B91 Serial driver

Serial driver basic support for new Telink B91 platform.

Signed-off-by: Yuriy Vynnychek <[email protected]>

Author: Yuriy Vynnychek

CODEOWNERS

@@ -291,6 +291,7 @@
 /drivers/sensor/lsm*/                     @avisconti
 /drivers/sensor/mpr/                      @sven-hm
 /drivers/sensor/st*/                      @avisconti
+/drivers/serial/*b91*                     @yurvyn
 /drivers/serial/uart_altera_jtag_hal.c    @nashif
 /drivers/serial/*ns16550*                 @dcpleung @nashif @jenmwms @aasthagr
 /drivers/serial/*nrfx*                    @Mierunski @anangl

drivers/serial/CMakeLists.txt

@@ -2,6 +2,7 @@
 
 zephyr_library()
 zephyr_library_sources_ifdef(CONFIG_UART_ALTERA_JTAG uart_altera_jtag_hal.c)
+zephyr_library_sources_ifdef(CONFIG_UART_TELINK_B91 uart_b91.c)
 zephyr_library_sources_ifdef(CONFIG_UART_IMX uart_imx.c)
 zephyr_library_sources_ifdef(CONFIG_UART_CC13XX_CC26XX uart_cc13xx_cc26xx.c)
 zephyr_library_sources_ifdef(CONFIG_UART_CC32XX uart_cc32xx.c)

drivers/serial/Kconfig

@@ -79,6 +79,8 @@ config UART_DRV_CMD
 
 comment "Serial Drivers"
 
+source "drivers/serial/Kconfig.b91"
+
 source "drivers/serial/Kconfig.ns16550"
 
 source "drivers/serial/Kconfig.mcux"

drivers/serial/Kconfig.b91

@@ -0,0 +1,12 @@
+# Copyright (c) 2021 Telink Semiconductor
+# SPDX-License-Identifier: Apache-2.0
+
+# Telink B91 UART configuration options
+
+config UART_TELINK_B91
+	bool "Telink B91 UART driver"
+	depends on SOC_RISCV_TELINK_B91
+	select SERIAL_HAS_DRIVER
+	select SERIAL_SUPPORT_INTERRUPT
+	help
+	  This option enables the B91 serial driver.