AW: video card for Lite5200

AW: video card for Lite5200

[Martin Krause]
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Re: AW: video card for Lite5200

[Clemens Koller]

Hi, Martin!

> From the silicon motion homepage you could get a framebuffer driver for
> the SM501 PCI card. This should work without great modifications for
> PPC systems.

Thank you, I know that thing. I started with that driver, but I did
quite a lot of code cleanup (I guess there are lots of leftovers from 
the SM7xx parts). I am about to put this into a loadable kernel module 
fbdev driver. Later on, we might need some power management, use it on 
different resolutions and use the other on-chip peripherals...

> On our board (with MPC5200 CPU), we connected the SM501 not over PCI,
> but over the local bus. You could find the driver in the 
> linuxppc_2_4_devel Kernel from the Denx CVS server. Look at: http://www.denx.de/e/index1.php?head=solution-se-head&main=solution-se&subnav=solution-se-subnav&logo=logo-se&mainnav=softwarenav&bottom=bottom-se

I'll have a look at that one, too. Thanks...
Do you use any of the other peripherals of the SM501, too?
(USB, Audio, 8051)

Best greets,

Clemens Koller

AW: video card for Lite5200

[Martin Krause]

Hi Clemens,

Clemens Koller wrotes on Freitag, 10. Dezember 2004 16:11:
> > From the silicon motion homepage you could get a framebuffer driver
> > for the SM501 PCI card. This should work without great
> > modifications for PPC systems.
>=20
> Thank you, I know that thing. I started with that driver, but I did
> quite a lot of code cleanup (I guess there are lots of leftovers from
> the SM7xx parts). I am about to put this into a loadable
> kernel module fbdev driver.
> Later on, we might need some power management, use it on
> different resolutions and use the other on-chip peripherals...

Oh, sounds interesting. We took the driver from SMI and hacked it
to run on our board. Three different resolutions are possible:
640x480, 800x600 and 1024x768. We use "fbset" to change it.
But with the higher two resolutions, the picture is very noise.=20
I think this is because of two high SM501 internal memory clocks.
Unforunately the datasheet of the grafic controler is very spare -
not to say poor. So I yet couldn't figure out, at wich speed the
memory clock is running actually and how to change it.

> Do you use any of the other peripherals of the SM501, too? (USB,
> Audio, 8051)=20

No, actually not.

Regards,
Martin