menuconfig UART_NS16550 bool "NS16550 serial driver" default n select SERIAL_HAS_DRIVER help This option enables the NS16550 serial driver. This driver can be used for the serial hardware available on x86 platforms. config UART_NS16550_PCI bool "Enable PCI Support" default n depends on PCI && UART_NS16550 help This enables NS16550 to probe for PCI-based serial devices. This option enables the driver to auto-detect the device configuration required to access those ports. config UART_NS16550_DLF bool "Enable Divisor Latch Fraction (DLF) support" default n depends on UART_NS16550 help This enables support for divisor latch fraction (DLF). It is used to limit frequency error. Says n if you are not sure if hardware supports this. config UART_NS16550_LINE_CTRL bool "Enable Serial Line Control for Apps" default n depends on UART_LINE_CTRL && UART_NS16550 help This enables the API for apps to control the serial line, such as CTS and RTS. Says n if not sure. config UART_NS16550_DRV_CMD bool "Enable Driver Commands" default n depends on UART_DRV_CMD && UART_NS16550 help This enables the API for apps to send commands to driver. Says n if not sure. # ---------- Port 0 ---------- menuconfig UART_NS16550_PORT_0 bool "Enable NS16550 Port 0" default n depends on UART_NS16550 help This tells the driver to configure the UART port at boot, depending on the additional configure options below. config UART_NS16550_PORT_0_NAME string "Port 0 Device Name" default "UART_0" depends on UART_NS16550_PORT_0 help This is the device name for UART, and is included in the device struct. config UART_NS16550_PORT_0_IRQ_PRI int "Port 0 Interrupt Priority" default 0 depends on UART_NS16550_PORT_0 help The interrupt priority for UART port. config UART_NS16550_PORT_0_BAUD_RATE int "Port 0 Baud Rate" default 0 depends on UART_NS16550_PORT_0 help The baud rate for UART port to be set to at boot. Leave at 0 to skip initialization. config UART_NS16550_PORT_0_OPTIONS int "Port 0 Options" default 0 depends on UART_NS16550_PORT_0 help Options used for port initialization. config UART_NS16550_PORT_0_DLF hex "Port 0 DLF value" default 0x0 depends on UART_NS16550_PORT_0 && UART_NS16550_DLF help Value for DLF register. config UART_NS16550_PORT_0_PCI bool "Port 0 is PCI-based" default n depends on UART_NS16550_PCI && UART_NS16550_PORT_0 help Obtain port information from PCI. # ---------- Port 1 ---------- menuconfig UART_NS16550_PORT_1 bool "Enable NS16550 Port 1" default n depends on UART_NS16550 help This tells the driver to configure the UART port at boot, depending on the additional configure options below. config UART_NS16550_PORT_1_NAME string "Port 1 Device Name" default "UART_1" depends on UART_NS16550_PORT_1 help This is the device name for UART, and is included in the device struct. config UART_NS16550_PORT_1_IRQ_PRI int "Port 1 Interrupt Priority" default 0 depends on UART_NS16550_PORT_1 help The interrupt priority for UART port. config UART_NS16550_PORT_1_BAUD_RATE int "Port 1 Baud Rate" default 0 depends on UART_NS16550_PORT_1 help The baud rate for UART port to be set to at boot. Leave at 0 to skip initialization. config UART_NS16550_PORT_1_OPTIONS int "Port 1 Options" default 0 depends on UART_NS16550_PORT_1 help Options used for port initialization. config UART_NS16550_PORT_1_DLF hex "Port 1 DLF value" default 0x0 depends on UART_NS16550_PORT_1 && UART_NS16550_DLF help Value for DLF register.