This version (04 Oct 2022 13:49) was approved by Cosmin Tanislav.
Table of Contents
MAX310x Driver
Supported devices
Evaluation boards
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.
This specifies any shell prompt running on the target
picocom -b 9600 /dev/ttyMAX0
resources/tools-software/linux-drivers/serial/max310x.txt · Last modified: 04 Oct 2022 13:33 by Cosmin Tanislav