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Diffstat (limited to 'src/soc/intel/broadwell/cpu.c')
-rw-r--r--src/soc/intel/broadwell/cpu.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/src/soc/intel/broadwell/cpu.c b/src/soc/intel/broadwell/cpu.c
index b46c2e256d..8e05998c19 100644
--- a/src/soc/intel/broadwell/cpu.c
+++ b/src/soc/intel/broadwell/cpu.c
@@ -246,8 +246,11 @@ static void initialize_vr_config(void)
msr = rdmsr(MSR_VR_MISC_CONFIG2);
msr.lo &= ~0xffff;
/* Allow CPU to control minimum voltage completely (15:8) and
- * set the fast ramp voltage to 1110mV (0x6f in 10mV steps). */
- msr.lo |= 0x006f;
+ * set the fast ramp voltage in 10mV steps. */
+ if (cpu_family_model() == BROADWELL_FAMILY_ULT)
+ msr.lo |= 0x006a; /* 1.56V */
+ else
+ msr.lo |= 0x006f; /* 1.60V */
wrmsr(MSR_VR_MISC_CONFIG2, msr);
}