In the world of embedded systems and industrial computing, serial communication remains a backbone technology. While UARTs (Universal Asynchronous Receiver-Transmitters) have evolved significantly, the 16C95x series stands out as a high-performance, feature-rich family of serial port controllers. However, to unlock their full potential—FIFO depths of up to 128 bytes, auto hardware flow control, and data rates exceeding 5 Mbps—you need a robust and well-tuned 16c95x serial port driver.
The driver identifies the device (via PCI/ACPI/device tree), maps memory or I/O ports, initializes the extended registers, and sets default FIFO trigger levels. It registers with the tty layer as a uart_port. 16c95x serial port driver
Check Logs: Run dmesg | grep tty to see if the kernel recognized the port during boot. You should see entries like ttyS0 or ttyS1. The Ultimate Guide to the 16C95x Serial Port
The 16C95x driver unlocks advanced hardware capabilities of the OxSemi chipset that exceed standard 16C550 serial port specs: Large 128-Byte FIFOs clear per-channel interrupt
A correctly implemented driver exposes the following hardware strengths:
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