提交 94f45bcd 编写于 作者: V Ville Syrjala 提交者: Linus Torvalds

atyfb: increase SPLL delay

Wait 5 ms instead of 500 us for the SPLL to lock.  This matches the
recommendation in mach64 programmer's guide.
Signed-off-by: NAntonino Daplas <adaplas@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 2620c6e3
......@@ -608,12 +608,10 @@ static void aty_resume_pll_ct(const struct fb_info *info,
aty_st_pll_ct(SCLK_FB_DIV, pll->ct.sclk_fb_div, par);
aty_st_pll_ct(SPLL_CNTL2, pll->ct.spll_cntl2, par);
/*
* The sclk has been started. However, I believe the first clock
* ticks it generates are not very stable. Hope this primitive loop
* helps for Rage Mobilities that sometimes crash when
* we switch to sclk. (Daniel Mantione, 13-05-2003)
* SCLK has been started. Wait for the PLL to lock. 5 ms
* should be enough according to mach64 programmer's guide.
*/
udelay(500);
mdelay(5);
}
aty_st_pll_ct(PLL_REF_DIV, pll->ct.pll_ref_div, par);
......
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