Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=159dde93692ef549a0b2012c9f25feb4df638c9c
Commit: 159dde93692ef549a0b2012c9f25feb4df638c9c
Parent: b4e124c138558a0cff51398ddff9a8e44ed0b529
Author: Ville Syrjala <[EMAIL PROTECTED]>
AuthorDate: Tue May 8 00:39:47 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Tue May 8 11:15:32 2007 -0700
atyfb: halve XCLK with Mobility and 32bit memory
Laptops with Rage Mobility and 32bit memory interface seem to require halved
XCLK to operate correctly.
Signed-off-by: Antonino Daplas <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
drivers/video/aty/atyfb_base.c | 3 +++
include/video/mach64.h | 1 +
2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/video/aty/atyfb_base.c b/drivers/video/aty/atyfb_base.c
index b61ab3b..ea67dd9 100644
--- a/drivers/video/aty/atyfb_base.c
+++ b/drivers/video/aty/atyfb_base.c
@@ -2377,6 +2377,9 @@ static int __devinit aty_init(struct fb_info *info)
/* for many chips, the mclk is 67 MHz for SDRAM, 63 MHz
otherwise */
if (par->pll_limits.mclk == 67 && par->ram_type < SDRAM)
par->pll_limits.mclk = 63;
+ /* Mobility + 32bit memory interface need halved XCLK. */
+ if (M64_HAS(MOBIL_BUS) && par->ram_type == SDRAM32)
+ par->pll_limits.xclk = (par->pll_limits.xclk + 1) >> 1;
}
#endif
diff --git a/include/video/mach64.h b/include/video/mach64.h
index 09a7f4a..a8332e5 100644
--- a/include/video/mach64.h
+++ b/include/video/mach64.h
@@ -885,6 +885,7 @@
#define SDRAM 4
#define SGRAM 5
#define WRAM 6
+#define SDRAM32 6
#define DAC_INTERNAL 0x00
#define DAC_IBMRGB514 0x01
-
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