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LINUX 16550A DRIVER

If you intend to use a software modem also called Winmodem under Linux, forget it. Do not compile this driver as a module if you are using non-standard serial ports, since the configuration information will be lost when the driver is unloaded. Home Questions Tags Users Unanswered. The data is retrived from: The datasheet for the CPU doesn’t say much.

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Which is what the kernel fails with as well. Linux requires a new x86 chip type for the Vortex86DX.

What I’ve done so far: The programming guide on the page you point to is near-useless for answering this, but maybe you’ll get lucky and find someone who linhx programmed this SoC before.

If you intend to use a software modem also called Winmodem under Linux, forget it.

The Linux Serial HOWTO: What Are UARTs?

It can also mean the UART has a buggy implementation, but that’s probably not what’s going on here. Nope, setserial doesn’t work. Sign up or log in Sign up using Google. The data is retrived from: LSR safety check engaged! I wrote a PCI utility that wrote to this bit, but it didn’t seem to enable the COM port or change anything when I did the io port probing. Most people will say Y or M here, so that they can use serial mice, modems and similar devices connecting to the standard serial ports.

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CONFIG_SERIAL_8250: 8250/16550 and compatible serial support

Sign up using Email 16550a Password. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Now I’m working on getting the Linux part working.

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Filedes is not a tty. This limitation may be lifted in the future. It appears there is nothing there. Main index – S index.

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Linkx indicates there is a control bit in a Southbridge register that does “something” for COM9. The datasheet for the CPU doesn’t say much.

If you have a mouseman serial mouse which is not recognized by the X window system, try running gpm first. To compile this driver as a module, choose M here: This page is automaticly generated with free libre, open software lkddb see lkddb-sources.

Linux detects my COM9 as ttyS4 in dmesg. So I wrote an io port probing utility to directly read from io port 0x, and I could not detect any A registers in the 0x to 0x region.

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Any help would be appreciated at this point!

Linux source code: drivers/tty/serial/c (v) – Bootlin

I’ve since got the UART part working. These modems are crippled and require proprietary drivers which are only available under Windows.

SE to chase the low-level parts. Do not compile this driver as a module if you are using non-standard serial ports, since the configuration information will be lost when the driver is unloaded. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

setserial(8) – Linux man page

Possibly there’s a problem in my driver, but it all looks fairly straight forward how I am supposed to add a basic compatible device. The kernel still does the same autoconfig and scanning as setserial does. Home Questions Tags Users Unanswered.