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intel/gma: fix RPNFREQ_VAL bitmask 

gma.c of Nehalem was copied from Sandy/Ivy Bridge, so fix it there too.

Tested on lenovo/x230. Since both the bit that was masked wrongly and the
one that wasn't masked, but sould have been, are 0, the behaviour on
lenovo/x230 doesn't change.

Change-Id: I5f51c4929df83f948fcb7dc06e07ac3cc4ccf4f2
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/22596
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This commit is contained in:
Felix Held 2017-11-25 00:45:23 +01:00 committed by Nico Huber
parent f67c967af2
commit 6b6c94bacc
2 changed files with 6 additions and 4 deletions
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5
src/northbridge/intel/nehalem/gma.c
View File

@ -488,10 +488,11 @@ 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);

5
src/northbridge/intel/sandybridge/gma.c
View File

@ -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);