From: Olaf Hering <olh@suse.de>
To: Antonino Daplas <adaplas@pol.net>, linux-kernel@vger.kernel.org
Subject: [PATCH] set correct mclk/xclk values for aty in ibook
Date: Mon, 1 Nov 2004 16:47:23 +0100 [thread overview]
Message-ID: <20041101154723.GA14379@suse.de> (raw)
In-Reply-To: <20041101141622.GA14335@suse.de>
The first iBook needs special mclk/xclk values, or the screen will show
only garbage. A patch like this went into 2.4.23. It stopped working
after 2.6.10-rc1.
http://linux.bkbits.net:8080/linux-2.4/cset@3f966ca7mqKxZorh7Uw2SBAuVbv3mA
It was discussed here:
http://marc.theaimsgroup.com/?t=106345749200001&r=1&w=4
Signed-off-by: Olaf Hering <olh@suse.de>
diff -purN linux-2.6.10-rc1-bk9.orig/drivers/video/aty/atyfb_base.c linux-2.6.10-rc1-bk9-olh/drivers/video/aty/atyfb_base.c
--- linux-2.6.10-rc1-bk9.orig/drivers/video/aty/atyfb_base.c 2004-10-30 20:13:02.000000000 +0200
+++ linux-2.6.10-rc1-bk9-olh/drivers/video/aty/atyfb_base.c 2004-11-01 16:29:57.613561216 +0100
@@ -2190,6 +2190,14 @@ static int __init aty_init(struct fb_inf
par->aty_cmap_regs =
(struct aty_cmap_regs __iomem *) (par->ati_regbase + 0xc0);
+#ifdef CONFIG_PPC_PMAC
+ /* The Apple iBook1 uses non-standard memory frequencies. We detect it
+ * and set the frequency manually. */
+ if (machine_is_compatible("PowerBook2,1")) {
+ par->pll_limits.mclk = 70;
+ par->pll_limits.xclk = 53;
+ }
+#endif
if (pll)
par->pll_limits.pll_max = pll;
--
USB is for mice, FireWire is for men!
sUse lINUX ag, nÜRNBERG
prev parent reply other threads:[~2004-11-01 16:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-01 14:16 [PATCH] atyfb_base.c requires atyfb_cursor() Olaf Hering
2004-11-01 15:47 ` Olaf Hering [this message]
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