MAX310x

MAX310x Driver.

Supported devices

MAX3107

MAX3108

MAX3109

MAX14830

Evaluation boards

MAX3107EVKIT

MAX14830EVKIT

Overview

The MAX310x devices are advanced UART with 128 words each of receive and transmit FIFO that can be controlled through I²C or high-speed SPI™. Baud rates up to 24Mbps make them suitable for today’s high data rate applications.

A PLL, predivider, and fractional baud-rate generator allow high-resolution baud-rate programming and minimize the dependency of baud rate on reference clock frequency.

The MAX3109 is a dual-channel device, while the MAX14830 is quad-channel.

Source Code

Status

Source	Mainlined?
git	Yes

Files

Function	File
driver	drivers/tty/serial/max310x.c
Documentation	Documentation/devicetree/bindings/serial/maxim,max310x.txt

Example device tree

Function	File
i2c dts	rpi-max14830-i2c-overlay.dts
spi dts	rpi-max14830-spi-overlay.dts

Driver testing

The driver exposes character devices starting with the ttyMAX name.

To connect to these devices, use a Serial Terminal Emulaor (like GTKTerm, Picocom, Minicom, Tera Term).

For example, to use Picocom to connect to UART port 0 of a MAX14830 device using a 9600 baud-rate, use the following command.

picocom -b 9600 /dev/ttyMAX0