diff options
Diffstat (limited to 'src/northbridge/intel/sandybridge/gma.c')
| -rw-r--r-- | src/northbridge/intel/sandybridge/gma.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/northbridge/intel/sandybridge/gma.c b/src/northbridge/intel/sandybridge/gma.c index 61b9008467..74aabf9e66 100644 --- a/src/northbridge/intel/sandybridge/gma.c +++ b/src/northbridge/intel/sandybridge/gma.c @@ -498,10 +498,11 @@ static void gma_pm_init_pre_vbios(struct device *dev) } /* 12: Normal Frequency Request */ - /* RPNFREQ_VAL comes from MCHBAR 0x5998 23:16 (8 bits!? use 7) */ + /* RPNFREQ_VAL comes from MCHBAR 0x5998 23:16 */ + /* only the lower 7 bits are used and shifted left by 25 */ reg32 = MCHBAR32(0x5998); reg32 >>= 16; - reg32 &= 0xef; + reg32 &= 0x7f; reg32 <<= 25; gtt_write(0xa008, reg32); |