diff options
Diffstat (limited to 'board/tqm8540/tqm8540.c')
| -rw-r--r-- | board/tqm8540/tqm8540.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/board/tqm8540/tqm8540.c b/board/tqm8540/tqm8540.c index ee10d00..970c684 100644 --- a/board/tqm8540/tqm8540.c +++ b/board/tqm8540/tqm8540.c @@ -74,15 +74,26 @@ long int initdram (int board_type) #if defined(CONFIG_DDR_DLL) { - volatile ccsr_gur_t *gur = &immap->im_gur; - uint temp_ddrdll = 0; + volatile ccsr_gur_t *gur= &immap->im_gur; + int i,x; + + x = 10; /* * Work around to stabilize DDR DLL */ - temp_ddrdll = gur->ddrdllcr; - gur->ddrdllcr = ((temp_ddrdll & 0xff) << 16) | 0x80000000; - asm ("sync;isync;msync"); + gur->ddrdllcr = 0x81000000; + asm("sync;isync;msync"); + udelay (200); + while (gur->ddrdllcr != 0x81000100) { + gur->devdisr = gur->devdisr | 0x00010000; + asm("sync;isync;msync"); + for (i=0; i<x; i++) + ; + gur->devdisr = gur->devdisr & 0xfff7ffff; + asm("sync;isync;msync"); + x++; + } } #endif |