drivers/serial/Kconfig.nrfx_uart_instance

#nRF UART(E) instance configuration

# Copyright (c) 2023 Nordic Semiconductor ASA
# SPDX-License-Identifier: Apache-2.0

config UART_$(nrfx_uart_num)_INTERRUPT_DRIVEN
	bool "Interrupt support on port $(nrfx_uart_num)"
	depends on UART_INTERRUPT_DRIVEN
	default y
	help
	  This option enables UART interrupt support on port $(nrfx_uart_num).

config UART_$(nrfx_uart_num)_ASYNC
	bool "Asynchronous API support on port $(nrfx_uart_num)"
	depends on UART_ASYNC_API && !UART_$(nrfx_uart_num)_INTERRUPT_DRIVEN
	default y
	help
	  This option enables UART Asynchronous API support on port $(nrfx_uart_num).

config UART_$(nrfx_uart_num)_NRF_USE_TIMER
	bool
	depends on UART_ASYNC_API
	depends on $(dt_nodelabel_has_prop,uart$(nrfx_uart_num),timer)
	depends on HAS_HW_NRF_UARTE$(nrfx_uart_num)
	default y
	help
	  Indicates that TIMER peripheral for RX byte counting is assigned to that instance
	  in the Device Tree.

config UART_$(nrfx_uart_num)_COUNT_BYTES_WITH_TIMER
	bool
	depends on UART_$(nrfx_uart_num)_NRF_USE_TIMER
	depends on $(dt_nodelabel_bool_prop,uart$(nrfx_uart_num),frame-timeout-supported)
	default y
	imply UARTE_NRFX_UARTE_COUNT_BYTES_WITH_TIMER
	help
	  Indicates that TIMER peripheral for RX byte counting is assigned to that instance
	  in the Device Tree. UARTE revision used in the newer targets like nRF54x Series.

config UART_$(nrfx_uart_num)_COUNT_BYTES_WITH_TIMER_LEGACY
	bool
	depends on UART_$(nrfx_uart_num)_NRF_USE_TIMER || UART_$(nrfx_uart_num)_NRF_HW_ASYNC
	depends on !$(dt_nodelabel_bool_prop,uart$(nrfx_uart_num),frame-timeout-supported)
	default y
	imply UARTE_NRFX_UARTE_COUNT_BYTES_WITH_TIMER_LEGACY
	help
	  Indicates that TIMER peripheral for RX byte counting is assigned to that instance
	  in the Device Tree. UARTE revision used in the legacy targets (nRF52x, nRF53x and nRF91x).

config UART_$(nrfx_uart_num)_ENHANCED_POLL_OUT
	bool "Efficient poll out on port $(nrfx_uart_num)"
	depends on !$(dt_nodelabel_bool_prop,uart$(nrfx_uart_num),endtx-stoptx-supported)
	default y
	depends on HAS_HW_NRF_UARTE$(nrfx_uart_num)
	depends on HAS_HW_NRF_PPI || HAS_HW_NRF_DPPIC
	select NRFX_GPPI
	help
	  When enabled, polling out does not trigger interrupt which stops TX.
	  Feature uses a PPI channel.

config UART_$(nrfx_uart_num)_NRF_PARITY_BIT
	bool "Parity bit"
	help
	  Enable parity bit.

config UART_$(nrfx_uart_num)_NRF_TX_BUFFER_SIZE
	int "Size of RAM buffer"
	depends on HAS_HW_NRF_UARTE$(nrfx_uart_num)
	range 1 $(UINT16_MAX)
	default 32
	help
	  Size of the transmit buffer for API function: fifo_fill.
	  This value is limited by range of TXD.MAXCNT register for
	  particular SoC.

config UART_$(nrfx_uart_num)_NRF_HW_ASYNC
	bool "Use hardware RX byte counting"
	depends on UART_ASYNC_API
	depends on HAS_HW_NRF_UARTE$(nrfx_uart_num)
	depends on !($(dt_nodelabel_bool_prop,uart$(nrfx_uart_num),frame-timeout-supported))
	select DEPRECATED
	help
	  Option is deprecated. Use Device Tree "timer" property to assign a TIMER peripheral
	  for reliable reception without HWFC.

config UART_$(nrfx_uart_num)_NRF_ASYNC_LOW_POWER
	bool "Low power mode"
	depends on HAS_HW_NRF_UARTE$(nrfx_uart_num)
	depends on UART_ASYNC_API
	default y if !PM_DEVICE
	help
	  When enabled, UARTE is enabled before each TX or RX usage and disabled
	  when not used. Disabling UARTE while in idle allows to achieve lowest
	  power consumption. It is only feasible if receiver is not always on.
	  This option is irrelevant when device power management (PM) is enabled
	  because then device state is controlled by the PM actions.


config UART_$(nrfx_uart_num)_NRF_HW_ASYNC_TIMER
	int "Timer instance"
	depends on !UART_$(nrfx_uart_num)_NRF_USE_TIMER
	depends on UART_$(nrfx_uart_num)_NRF_HW_ASYNC
	help
	  Option is deprecated. Use Device Tree "timer" property to assign a TIMER peripheral
	  for reliable reception without HWFC.