Re: Latest evbmips/LOONGSON (Lemote Yeeloong) observations

[Michael <macallan%netbsd.org@localhost>]

Hello,

On Mon, 20 Jul 2015 10:57:56 -0500 (CDT)
"John D. Baker" <jdbaker%mylinuxisp.com@localhost> wrote:

> On Mon, 20 Jul 2015, Michael wrote:
> 
> > This one is trivial to fix, we don't need or want the vgahw module on MIPS.
> > Heck, the SM50x isn't even VGA compatible.
> > 
> > > Is this yet another example of the "siliconmotion" driver being built
> > > for PC hardware when the target hardware is anything but?
> > 
> > Yes and no. Some newer SiliconMotion chips do have VGA compatibility
> > goo, and if we were using VGA text mode on them then the vgahw module
> > would actually be useful. We don't though.
> > 
> > I'm going to fix that in the next few days.
> 
> Since the Lemote Yeeloong (SM712) does have an DB-15HD connector for an
> external display (presumedly VGA), will such a fix negatively impact the
> operation of an external display?  I supose Xrandr will take care of any
> video mode issues for X, but what about the framebuffer wscons display?

This has absolutely nothing to do with the vga output. The vgahw module
is mostly for accessing the vga compat registers and dealing with text
mode. Neither is relevant on loongson hardware.
I did a similar fix for several drivers on macppc and sparc64, for
exactly the same reason.

have fun
Michael