From: Olaf Hering <olaf@aepfle.de>
To: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH] atyfb: force 29MHz xtal on G3 PowerBooks
Date: Sat, 25 Aug 2007 11:13:58 +0200 [thread overview]
Message-ID: <20070825091358.GA12235@aepfle.de> (raw)
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.
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";
}
next reply other threads:[~2007-08-25 9:14 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-25 9:13 Olaf Hering [this message]
2007-09-19 3:01 ` [PATCH] atyfb: force 29MHz xtal on G3 PowerBooks Benjamin Herrenschmidt
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20070825091358.GA12235@aepfle.de \
--to=olaf@aepfle.de \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@ozlabs.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).