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: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 5 deletions

diff --git a/drivers/video/aty/mach64_ct.c b/drivers/video/aty/mach64_ct.c
index 1fdcfdbf669b..cc9e9779b75f 100644
--- a/drivers/video/aty/mach64_ct.c
+++ b/drivers/video/aty/mach64_ct.c
@@ -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);