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Re: [PATCH] atyfb: force 29MHz xtal on G3 PowerBooks
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From: Benjamin Herrenschmidt
Subject:
Re: [PATCH] atyfb: force 29MHz xtal on G3 PowerBooks
Date: Tuesday, September 18, 2007 - 8:01 pm
On Sat, 2007-08-25 at 11:13 +0200, Olaf Hering wrote:
quoted text
> The atyfb does not work on my 233MHz PowerBook with Mach64 LP, when the > kernel is booted from firmware. aty_ld_pll_ct() returns 0x22 and xtal > remains at 14.31818. When booted from MacOS, aty_ld_pll_ct() returns 0x3c > and xtal is changed to 29.498928. > Google indicates that all 4 PowerBook models need the higher value.
Seems to break it on my wallstreet first gen (M64 LG) So NAK for now until we find out a better way. Ben.
quoted text
> Signed-off-by: Olaf Hering <olaf@aepfle.de> > > --- a/drivers/video/aty/atyfb_base.c > +++ b/drivers/video/aty/atyfb_base.c > @@ -2411,7 +2411,7 @@ static int __devinit aty_init(struct fb_ > diff1 = -diff1; > if (diff2 < 0) > diff2 = -diff2; > - if (diff2 < diff1) { > + if (diff2 < diff1 || (M64_HAS(G3_PB_1024x768))) { > par->ref_clk_per = 1000000000000ULL / 29498928; > xtal = "29.498928"; > } > _______________________________________________ > Linuxppc-dev mailing list >
Linuxppc-dev@ozlabs.org
>
https://ozlabs.org/mailman/listinfo/linuxppc-dev
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Messages in current thread:
[PATCH] atyfb: force 29MHz xtal on G3 PowerBooks
, Olaf Hering
, (Sat Aug 25, 2:13 am)
Re: [PATCH] atyfb: force 29MHz xtal on G3 PowerBooks
, Benjamin Herrenschmidt
, (Tue Sep 18, 8:01 pm)
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