diff options
Diffstat (limited to 'drivers/video/matrox/g450_pll.c')
| -rw-r--r-- | drivers/video/matrox/g450_pll.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/drivers/video/matrox/g450_pll.c b/drivers/video/matrox/g450_pll.c index 7c76e079ca7d..d42346e7fdda 100644 --- a/drivers/video/matrox/g450_pll.c +++ b/drivers/video/matrox/g450_pll.c | |||
| @@ -331,16 +331,19 @@ static int __g450_setclk(WPMINFO unsigned int fout, unsigned int pll, | |||
| 331 | tmp |= M1064_XPIXCLKCTRL_PLL_UP; | 331 | tmp |= M1064_XPIXCLKCTRL_PLL_UP; |
| 332 | } | 332 | } |
| 333 | matroxfb_DAC_out(PMINFO M1064_XPIXCLKCTRL, tmp); | 333 | matroxfb_DAC_out(PMINFO M1064_XPIXCLKCTRL, tmp); |
| 334 | #ifdef __powerpc__ | 334 | /* DVI PLL preferred for frequencies up to |
| 335 | /* This is necessary to avoid jitter on PowerPC | 335 | panel link max, standard PLL otherwise */ |
| 336 | * (OpenFirmware) systems, but apparently | 336 | if (fout >= MINFO->max_pixel_clock_panellink) |
| 337 | * introduces jitter, at least on a x86-64 | 337 | tmp = 0; |
| 338 | * using DVI. | 338 | else tmp = |
| 339 | * A simple workaround is disable for non-PPC. | 339 | M1064_XDVICLKCTRL_DVIDATAPATHSEL | |
| 340 | */ | 340 | M1064_XDVICLKCTRL_C1DVICLKSEL | |
| 341 | matroxfb_DAC_out(PMINFO M1064_XDVICLKCTRL, 0); | 341 | M1064_XDVICLKCTRL_C1DVICLKEN | |
| 342 | #endif /* __powerpc__ */ | 342 | M1064_XDVICLKCTRL_DVILOOPCTL | |
| 343 | matroxfb_DAC_out(PMINFO M1064_XPWRCTRL, xpwrctrl); | 343 | M1064_XDVICLKCTRL_P1LOOPBWDTCTL; |
| 344 | matroxfb_DAC_out(PMINFO M1064_XDVICLKCTRL,tmp); | ||
| 345 | matroxfb_DAC_out(PMINFO M1064_XPWRCTRL, | ||
| 346 | xpwrctrl); | ||
| 344 | 347 | ||
| 345 | matroxfb_DAC_unlock_irqrestore(flags); | 348 | matroxfb_DAC_unlock_irqrestore(flags); |
| 346 | } | 349 | } |