write stuff in the PRAM?

write stuff in the PRAM?

[Colin LEROY]

Hi,

I'm trying to get TV-out work on my iBook G4.
After booting with a CRT attached, I get
$ cat /proc/device-tree/pci@f0000000/ATY,ViaParent@10/ATY,Via_B@1/display-type
CRT

I get the same after booting with a TV attached.

It looks like setting this to "STV" would make TV video-out work (or at least
help it work ;-).

Is there any way to do such a thing (either a tool, a kernel patch, or in
openfirmware voodoo) ?

Thanks,
--
Colin
  This message represents the official view of the voices
  in my head.


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Re: write stuff in the PRAM?

[Benjamin Herrenschmidt]

On Tue, 2004-06-01 at 09:15, Colin LEROY wrote:
> Hi,
>
> I'm trying to get TV-out work on my iBook G4.
> After booting with a CRT attached, I get
> $ cat /proc/device-tree/pci@f0000000/ATY,ViaParent@10/ATY,Via_B@1/display-type
> CRT
>
> I get the same after booting with a TV attached.
>
> It looks like setting this to "STV" would make TV video-out work (or at least
> help it work ;-).
>
> Is there any way to do such a thing (either a tool, a kernel patch, or in
> openfirmware voodoo) ?

Nah. OF doesn't know how to setup the TV Out I think and radeonfb
definitely doesn't. It's a quite complicated process, I've seen a bit
of code from ATI supposed to do that a while ago full of comments about
things not working properly & black magic =P

Maybe once I'll try again getting that to work but that mean that day
I'm really terminally bored :)

Ben.


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