nuttx/drivers/serial/Kconfig-16550

#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#

if 16550_UART

config 16550_SERIAL_DISABLE_REORDERING
	bool "Disable reordering of ttySx devices."
	default n
	---help---
		NuttX per default reorders the serial ports (/dev/ttySx) so that the
		console is always on /dev/ttyS0. If more than one UART is in use this
		can, however, have the side-effect that all port mappings
		(hardware USART1 -> /dev/ttyS0) change if the console is moved to another
		UART.  This option disables that re-ordering for 16550 UARTs.

config 16550_UART0
	bool "16550 UART0"
	default n

if 16550_UART0

config 16550_UART0_BASE
	hex "16550 UART0 base address"

config 16550_UART0_CLOCK
	int "16550 UART0 clock"

config 16550_UART0_CLOCK_NAME
        string "16550 UART0 clock name"
        depends on CLK

config 16550_UART0_IRQ
	int "16550 UART0 IRQ number"

config 16550_UART0_BAUD
	int "16550 UART0 BAUD"
	default 115200

config 16550_UART0_PARITY
	int "16550 UART0 parity"
	default 0
	range 0 2
	---help---
		16550 UART0 parity.  0=None, 1=Odd, 2=Even.  Default: None

config 16550_UART0_BITS
	int "16550 UART0 number of bits"
	default 8
	---help---
		16550 UART0 number of bits.  Default: 8

config 16550_UART0_2STOP
	int "16550 UART0 two stop bits"
	default 0
	---help---
		0=1 stop bit, 1=Two stop bits.  Default: 1 stop bit

config 16550_UART0_RX_TRIGGER
  int "16550 UART0 RX interrupt trigger level"
	default 2
	range 0 3

config 16550_UART0_RXBUFSIZE
	int "16550 UART0 Rx buffer size"
	default 256
	---help---
		16550 UART0 Rx buffer size.  Default: 256

config 16550_UART0_TXBUFSIZE
	int "16550 UART0 Tx buffer size"
	default 256
	---help---
		16550 UART0 Tx buffer size.  Default: 256

config 16550_UART0_IFLOWCONTROL
	bool "16550 UART0 RTS flow control"
	default n
	select SERIAL_IFLOWCONTROL
	---help---
		Enable 16550 UART0 RTS flow control

config 16550_UART0_OFLOWCONTROL
	bool "16550 UART0 CTS flow control"
	default n
	select SERIAL_OFLOWCONTROL
	---help---
		Enable 16550 UART0 CTS flow control

config 16550_UART0_DMA
	bool "16550 UART0 DMA support"
	default n
	select ARCH_DMA
	select SERIAL_DMA
	---help---
		Enable DMA transfers on 16550 UART0

if 16550_UART0_DMA

config 16550_UART0_DMA_TX
	int "16550 UART0 DMA Tx channel identity"
	default -1
	---help---
		-1 means don't use DMA for sending

config 16550_UART0_DMA_RX
	int "16550 UART0 DMA Rx channel identity"
	default -1
	---help---
		-1 means don't use DMA for receiving

config 16550_UART0_DMA_RXBUFSIZE
	int "16550 UART0 DMA Rx buffer size"
	depends on 16550_UART0_DMA_RX != -1
	default 16550_UART0_RXBUFSIZE
	---help---
		16550 UART0 DMA Rx buffer size.

config 16550_UART0_DMA_RXTIMEOUT
	int "16550 UART0 DMA Rx timeout(char)"
	depends on 16550_UART0_DMA_RX != -1
	default 1
	---help---
		0 means DMA has no timeout for receiving

endif

endif # 16550_UART0

config 16550_UART1
	bool "16550 UART1"
	default n

if 16550_UART1

config 16550_UART1_BASE
	hex "16550 UART1 base address"

config 16550_UART1_CLOCK
	int "16550 UART1 clock"

config 16550_UART1_CLOCK_NAME
        string "16550 UART1 clock name"
        depends on CLK

config 16550_UART1_IRQ
	int "16550 UART1 IRQ number"

config 16550_UART1_BAUD
	int "16550 UART1 BAUD"
	default 115200

config 16550_UART1_PARITY
	int "16550 UART1 parity"
	default 0
	range 0 2
	---help---
		16550 UART1 parity.  0=None, 1=Odd, 2=Even.  Default: None

config 16550_UART1_BITS
	int "16550 UART1 number of bits"
	default 8
	---help---
		16550 UART1 number of bits.  Default: 8

config 16550_UART1_2STOP
	int "16550 UART1 two stop bits"
	default 0
	---help---
		0=1 stop bit, 1=Two stop bits.  Default: 1 stop bit

config 16550_UART1_RX_TRIGGER
  int "16550 UART1 RX interrupt trigger level"
	default 2
	range 0 3

config 16550_UART1_RXBUFSIZE
	int "16550 UART1 Rx buffer size"
	default 256
	---help---
		16550 UART1 Rx buffer size.  Default: 256

config 16550_UART1_TXBUFSIZE
	int "16550 UART1 Tx buffer size"
	default 256
	---help---
		16550 UART1 Tx buffer size.  Default: 256

config 16550_UART1_IFLOWCONTROL
	bool "16550 UART1 RTS flow control"
	default n
	select SERIAL_IFLOWCONTROL
	---help---
		Enable 16550 UART1 RTS flow control

config 16550_UART1_OFLOWCONTROL
	bool "16550 UART1 CTS flow control"
	default n
	select SERIAL_OFLOWCONTROL
	---help---
		Enable 16550 UART1 CTS flow control

config 16550_UART1_DMA
	bool "16550 UART1 DMA support"
	default n
	select ARCH_DMA
	select SERIAL_DMA
	---help---
		Enable DMA transfers on 16550 UART1

if 16550_UART1_DMA

config 16550_UART1_DMA_TX
	int "16550 UART1 DMA Tx channel identity"
	default -1
	---help---
		-1 means don't use DMA for sending

config 16550_UART1_DMA_RX
	int "16550 UART1 DMA Rx channel identity"
	default -1
	---help---
		-1 means don't use DMA for receiving

config 16550_UART1_DMA_RXBUFSIZE
	int "16550 UART1 DMA Rx buffer size"
	depends on 16550_UART1_DMA_RX != -1
	default 16550_UART1_RXBUFSIZE
	---help---
		16550 UART1 DMA Rx buffer size.

config 16550_UART1_DMA_RXTIMEOUT
	int "16550 UART1 DMA Rx timeout(char)"
	depends on 16550_UART1_DMA_RX != -1
	default 1
	---help---
		0 means DMA has no timeout for receiving

endif

endif # 16550_UART1

config 16550_UART2
	bool "16550 UART2"
	default n

if 16550_UART2

config 16550_UART2_BASE
	hex "16550 UART2 base address"

config 16550_UART2_CLOCK
	int "16550 UART2 clock"

config 16550_UART2_CLOCK_NAME
        string "16550 UART2 clock name"
        depends on CLK

config 16550_UART2_IRQ
	int "16550 UART2 IRQ number"

config 16550_UART2_BAUD
	int "16550 UART2 BAUD"
	default 115200

config 16550_UART2_PARITY
	int "16550 UART2 parity"
	default 0
	range 0 2
	---help---
		16550 UART2 parity.  0=None, 1=Odd, 2=Even.  Default: None

config 16550_UART2_BITS
	int "16550 UART2 number of bits"
	default 8
	---help---
		16550 UART2 number of bits.  Default: 8

config 16550_UART2_2STOP
	int "16550 UART2 two stop bits"
	default 0
	---help---
		0=1 stop bit, 1=Two stop bits.  Default: 1 stop bit

config 16550_UART2_RX_TRIGGER
  int "16550 UART2 RX interrupt trigger level"
	default 2
	range 0 3

config 16550_UART2_RXBUFSIZE
	int "16550 UART2 Rx buffer size"
	default 256
	---help---
		16550 UART2 Rx buffer size.  Default: 256

config 16550_UART2_TXBUFSIZE
	int "16550 UART2 Tx buffer size"
	default 256
	---help---
		16550 UART2 Tx buffer size.  Default: 256

config 16550_UART2_IFLOWCONTROL
	bool "16550 UART2 RTS flow control"
	default n
	select SERIAL_IFLOWCONTROL
	---help---
		Enable 16550 UART2 RTS flow control

config 16550_UART2_OFLOWCONTROL
	bool "16550 UART2 CTS flow control"
	default n
	select SERIAL_OFLOWCONTROL
	---help---
		Enable 16550 UART2 CTS flow control

config 16550_UART2_DMA
	bool "16550 UART2 DMA support"
	default n
	select ARCH_DMA
	select SERIAL_DMA
	---help---
		Enable DMA transfers on 16550 UART2

if 16550_UART2_DMA

config 16550_UART2_DMA_TX
	int "16550 UART2 DMA Tx channel identity"
	default -1
	---help---
		-1 means don't use DMA for sending

config 16550_UART2_DMA_RX
	int "16550 UART2 DMA Rx channel identity"
	default -1
	---help---
		-1 means don't use DMA for receiving

config 16550_UART2_DMA_RXBUFSIZE
	int "16550 UART2 DMA Rx buffer size"
	depends on 16550_UART2_DMA_RX != -1
	default 16550_UART2_RXBUFSIZE
	---help---
		16550 UART2 DMA Rx buffer size.

config 16550_UART2_DMA_RXTIMEOUT
	int "16550 UART2 DMA Rx timeout(char)"
	depends on 16550_UART2_DMA_RX != -1
	default 1
	---help---
		0 means DMA has no timeout for receiving

endif

endif # 16550_UART2

config 16550_UART3
	bool "16550 UART3"
	default n

if 16550_UART3

config 16550_UART3_BASE
	hex "16550 UART3 base address"

config 16550_UART3_CLOCK
	int "16550 UART3 clock"

config 16550_UART3_CLOCK_NAME
        string "16550 UART3 clock name"
        depends on CLK

config 16550_UART3_IRQ
	int "16550 UART3 IRQ number"

config 16550_UART3_BAUD
	int "16550 UART3 BAUD"
	default 115200

config 16550_UART3_PARITY
	int "16550 UART3 parity"
	default 0
	range 0 2
	---help---
		16550 UART3 parity.  0=None, 1=Odd, 2=Even.  Default: None

config 16550_UART3_BITS
	int "16550 UART3 number of bits"
	default 8
	---help---
		16550 UART3 number of bits.  Default: 8

config 16550_UART3_2STOP
	int "16550 UART3 two stop bits"
	default 0
	---help---
		0=1 stop bit, 1=Two stop bits.  Default: 1 stop bit

config 16550_UART3_RX_TRIGGER
  int "16550 UART3 RX interrupt trigger level"
	default 2
	range 0 3

config 16550_UART3_RXBUFSIZE
	int "16550 UART3 Rx buffer size"
	default 256
	---help---
		16550 UART3 Rx buffer size.  Default: 256

config 16550_UART3_TXBUFSIZE
	int "16550 UART3 Tx buffer size"
	default 256
	---help---
		16550 UART3 Tx buffer size.  Default: 256

config 16550_UART3_IFLOWCONTROL
	bool "16550 UART3 RTS flow control"
	default n
	select SERIAL_IFLOWCONTROL
	---help---
		Enable 16550 UART3 RTS flow control

config 16550_UART3_OFLOWCONTROL
	bool "16550 UART3 CTS flow control"
	default n
	select SERIAL_OFLOWCONTROL
	---help---
		Enable 16550 UART3 CTS flow control

config 16550_UART3_DMA
	bool "16550 UART3 DMA support"
	default n
	select ARCH_DMA
	select SERIAL_DMA
	---help---
		Enable DMA transfers on 16550 UART3

if 16550_UART3_DMA

config 16550_UART3_DMA_TX
	int "16550 UART3 DMA Tx channel identity"
	default -1
	---help---
		-1 means don't use DMA for sending

config 16550_UART3_DMA_RX
	int "16550 UART3 DMA Rx channel identity"
	default -1
	---help---
		-1 means don't use DMA for receiving

config 16550_UART3_DMA_RXBUFSIZE
	int "16550 UART3 DMA Rx buffer size"
	depends on 16550_UART3_DMA_RX != -1
	default 16550_UART3_RXBUFSIZE
	---help---
		16550 UART3 DMA Rx buffer size.

config 16550_UART3_DMA_RXTIMEOUT
	int "16550 UART3 DMA Rx timeout(char)"
	depends on 16550_UART3_DMA_RX != -1
	default 1
	---help---
		0 means DMA has no timeout for receiving

endif

endif # 16550_UART3

choice
	prompt "16550 Serial Console"
	default 16550_NO_SERIAL_CONSOLE
	depends on DEV_CONSOLE

config 16550_UART0_SERIAL_CONSOLE
	bool "16550 UART0 serial console"
	depends on 16550_UART0
	select SERIAL_CONSOLE

config 16550_UART1_SERIAL_CONSOLE
	bool "16550 UART1 serial console"
	depends on 16550_UART1
	select SERIAL_CONSOLE

config 16550_UART2_SERIAL_CONSOLE
	bool "16550 UART2 serial console"
	depends on 16550_UART2
	select SERIAL_CONSOLE

config 16550_UART3_SERIAL_CONSOLE
	bool "16550 UART3 serial console"
	depends on 16550_UART3
	select SERIAL_CONSOLE

config 16550_NO_SERIAL_CONSOLE
	bool "No 16550 serial console"

endchoice # 16550 Serial Console

config 16550_SUPRESS_CONFIG
	bool "Suppress 16550 configuration"
	default n

config 16550_SUPRESS_INITIAL_CONFIG
	bool "Suppress initial 16550 configuration"
	depends on !16550_SUPRESS_CONFIG
	default n
	---help---
		This option is useful, for example, if you are using a bootloader
		that configures the 16550_UART.  In that case, you may want to
		just leave the existing console configuration in place.  Default: n

config SERIAL_UART_ARCH_MMIO
	bool "Platform access register through the memory mapping"
	default n

config SERIAL_UART_ARCH_IOCTL
	bool "Platform has own custom IOCTL"
	default n

config 16550_REGINCR
	int "Address increment between 16550 registers"
	default 1
	---help---
		The address increment between 16550 registers.  Options are 1, 2, or 4.
		Default: 1

config 16550_REGWIDTH
	int "Bit width of 16550 registers"
	default 8
	---help---
		The bit width of registers.  Options are 8, 16, or 32. Default: 8

config 16550_ADDRWIDTH
	int "Address width of 16550 registers"
	default 8
	---help---
		The bit width of registers.  Options are 0, 8, 16, or 32.
		Default: 8
		Note: 0 means auto detect address size (uintptr_t)

config 16550_WAIT_LCR
	bool "Wait for UART before setting LCR"
	default n
	---help---
		Before setting the Line Control Register (LCR), wait until UART is
		not busy.  This is required for Synopsys DesignWare 8250, which
		will trigger spurious interrupts when setting the LCR without
		waiting.  Default: n

endif # 16550_UART