This patch has been included in Fedora for years without reported issues, but upstream adoption took time due to concerns about breaking other hardware. The Linux kernel's in-tree driver (usually 8250_pci for PCI devices and 8250 for legacy ports) supports many 16C95x-based cards out of the box. For the latest distribution kernels, support is often present; for custom kernels, ensure that the CONFIG_SERIAL_8250 and CONFIG_SERIAL_8250_PCI options are enabled.
If text or telemetry data returns as garbled code or random characters, the baud rate clock is likely mismatched.
A proper driver starts by resetting and configuring the UART. Below is a typical initialization routine (pseudo-code for a bare-metal driver). 16c95x serial port driver
What are you using (e.g., Windows 10 64-bit, Windows 11, Linux)?
The baud rate is set too high for the distance of the cable, or flow control is mismatched. This patch has been included in Fedora for
static void my_uart_interrupt(int irq, void *dev_id, struct pt_regs *regs)
Download the driver package from the manufacturer's website. If text or telemetry data returns as garbled
For corrections or advanced use cases, consult the comp.arch.embedded newsgroup or the linux-serial mailing list.
: In Windows Device Manager, right-click the COM port > Properties > Port Settings > Advanced . Ensure the Receive and Transmit buffers are set to their maximum values to prevent data loss.
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Choose and point the wizard to your downloaded driver folder. Advanced Settings Configuration: