16c95x Serial Port Driver Jun 2026

Locate the unconfigured device (often listed under "Other Devices" with a yellow exclamation mark as a "PCI Serial Port"). Right-click the device and select .

Once installed, you should manually verify that the driver is utilizing the hardware’s full potential:

// Map the serial port's I/O address io_base = ioremap(SERIAL_PORT, 0x10); if (!io_base) return -ENOMEM; 16c95x serial port driver

Many 16C95X implementations exist on multi-port PCI, PCIe, or ExpressCard expansion boards (e.g., dual-port or quad-port RS-232/RS-422/RS-485 cards). The driver correctly enumerates the single physical controller board into distinct, isolated COM ports within the OS device tree. Operating System Support and Installation

// 4. Configure extended features (auto flow control, trigger levels) // Enter extended register mode write_reg(base_addr + UART_LCR, 0xBF); Locate the unconfigured device (often listed under "Other

Before addressing the driver, it is essential to understand the hardware. The 16C95x family (including models like 16C950, 16C952, and 16C954) is an advanced UART generation from NXP (formerly Philips) and other compatible manufacturers. Key hardware differentiators include:

Automated flow control is a major feature that offloads a significant task from the CPU. The 16C95x can automatically manage both and out-of-band (hardware flow control using RTS/CTS signals) . Once configured by the driver, the UART handles these flow control mechanisms autonomously, preventing data overruns without CPU intervention. The 16C95x family (including models like 16C950, 16C952,

To achieve maximum throughput (> 1 Mbps), follow these guidelines:

Click . Here you can manually adjust the FIFO trigger levels (setting them to maximum utilizes the full 128-byte buffer) and change the COM port number (e.g., changing COM3 to COM1). Linux Operating Systems

What (and version) are you currently targeting?