config HAS_NS16550
	bool "NS16550 UART driver" if ARM
	default n if RISCV
	default y
	help
	  This selects the 16550-series UART support. For most systems, say Y.

config HAS_CADENCE_UART
	bool "Xilinx Cadence UART driver"
	default y
	depends on ARM_64
	help
	  This selects the Xilinx Zynq Cadence UART. If you have a Xilinx Zynq
	  based board, say Y.

config HAS_IMX_LPUART
	bool "i.MX LPUART driver"
	default y
	depends on ARM_64
	help
	  This selects the i.MX LPUART. If you have i.MX8QM based board, say Y.

config HAS_MVEBU
	bool "Marvell MVEBU UART driver"
	default y
	depends on ARM_64
	help
	  This selects the Marvell MVEBU UART. If you have a ARMADA 3700
	  based board, say Y.

config HAS_MESON
	bool "Amlogic MESON UART driver"
	default y
	depends on ARM_64
	help
	  This selects the Amlogic MESON UART. If you have a Amlogic based
	  board, say Y.

config HAS_PL011
	bool "ARM PL011 UART driver"
	default y
	depends on ARM
	help
	  This selects the ARM(R) AMBA(R) PrimeCell PL011 UART. If you have
	  an Integrator/PP2, Integrator/CP or Versatile platform, say Y.

config HAS_EXYNOS4210
	bool "Samsung Exynos 4210 UART driver"
	default y
	depends on ARM_32
	help
	  This selects the Samsung Exynos 4210 UART. If you have a Samsung
	  Exynos based board, say Y.

config HAS_OMAP
	bool "Texas Instruments OMAP UART driver"
	default y
	depends on ARM_32
	help
	  This selects the Texas Instruments OMAP UART. If you have a Texas
	  Instruments based CPU, say Y.

config HAS_SCIF
	bool "SuperH SCI(F) UART driver"
	default y
	depends on ARM
	help
	  This selects the SuperH SCI(F) UART. If you have a SuperH based board,
	  or Renesas R-Car Gen 2/3 based board say Y.

config HAS_EHCI
	bool
	depends on X86
	help
	  This selects the USB based EHCI debug port to be used as a UART. If
	  you have an x86 based system with USB, say Y.

config SERIAL_TX_BUFSIZE
	int "Size of the transmit serial buffer"
	default 32768
	help
	  Controls the default size of the transmit buffer (in bytes) used by
	  the serial driver.  Note the value provided will be rounded down to
	  the nearest power of 2.

	  Default value is 32768 (32KiB).

config XHCI
	bool "XHCI DbC UART driver"
	depends on X86
	help
	  This selects the USB based XHCI debug capability to be usable as a UART.
	  Enabling this option makes Xen use extra ~230KiB memory, even if XHCI UART
	  is not selected.
	  If you have an x86 based system with USB3, say Y.
