Re: [linuxsh-dev] patch: Multiple SCI(F)s support

[YAEGASHI T. <yae...@ma...>]

Hello Stuart,

>Attached is a patch which adds support for multiple SCI and SCIF's. This
>allows you to use both the serial ports at the same time, and select which
>serial port you want to use for a console at boot time.

Great.  This feature is just what I need recently, and I'm about
to begin hacking now. :->


>On processors which have two serial ports:
>  SCI  : ttyS0
>  SCIF : ttyS1
>so if you want to use the SCIF as a console, add a command line option
>along the lines of:
>  console=ttyS1,38400
>Similarly /dev/console will be bound to whichever serial port was selected
>on the command line (as long as /dev/console is major 5, minor 1).

I would support this scheme.


>Before you leap to install this patch, there is one thing I must point
>out. I've not been able to test this on anything other than a 7750, so
>I'd appreciate it if someone could check this out on an SH3.

I'll test this patch on my environment later.  Thank you.

BTW, SH7709(A) has three serial ports: SCI, SCIF, and IrDA(just
like SCIF, but at 0xa4000140).  Is it easy to expand this patch
to support them all?

And, HD64461 has several 16550A-style ports.  How should we
support them together with internal ports?

--
YAEGASHI Takeshi <yae...@ma...>