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yaml --- r: 33632 b: refs/heads/master c: b8cf368 h: refs/heads/master v: v3
git-mirror · Aug 27, 2006 · fa3c7e9 · fa3c7e9
1 parent d309816
commit fa3c7e9
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Showing 2 changed files with 9 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 01cfaf0d12ae5fa092cc916ca4066ee1598e857d
+refs/heads/master: b8cf368944807e29b16b24588a2a35c829bc9d9a
diff --git a/trunk/drivers/video/matrox/g450_pll.c b/trunk/drivers/video/matrox/g450_pll.c
@@ -331,7 +331,15 @@ static int __g450_setclk(WPMINFO unsigned int fout, unsigned int pll,
 					tmp |= M1064_XPIXCLKCTRL_PLL_UP;
 				}
 				matroxfb_DAC_out(PMINFO M1064_XPIXCLKCTRL, tmp);
+#ifdef __powerpc__
+				/* This is necessary to avoid jitter on PowerPC
+				 * (OpenFirmware) systems, but apparently
+				 * introduces jitter, at least on a x86-64
+				 * using DVI.
+				 * A simple workaround is disable for non-PPC.
+				 */
 				matroxfb_DAC_out(PMINFO M1064_XDVICLKCTRL, 0);
+#endif /* __powerpc__ */
 				matroxfb_DAC_out(PMINFO M1064_XPWRCTRL, xpwrctrl);
 
 				matroxfb_DAC_unlock_irqrestore(flags);