From 55228ba4b41e820efea71a75c649a6dd29cc76d5 Mon Sep 17 00:00:00 2001 From: Duncan Laurie Date: Mon, 25 Aug 2014 10:14:08 -0700 Subject: broadwell: Changes from 2.2.0 ref code - The SATA CAP register setup was moved outside the refcode blob we run so it needs to be set up by coreboot again... - Slight tweak to fast ramp voltage for broadwell CPU BUG=chrome-os-partner:25491 BRANCH=None TEST=Build and boot on samus Original-Change-Id: I7bdc0811ad8f28ab0912972036dca59d229b0173 Original-CSigned-off-by: Duncan Laurie Original-CReviewed-on: https://chromium-review.googlesource.com/214024 Original-CReviewed-by: Aaron Durbin (cherry picked from commit 5d166a0c4d206eaa885ecebaa0c3cefefdc59280) Signed-off-by: Marc Jones Change-Id: Id58d3bee5e713139edf6e8fda8cdf4c48ba95bd1 Reviewed-on: http://review.coreboot.org/8964 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/soc/intel/broadwell/cpu.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'src/soc/intel/broadwell/cpu.c') 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); } -- cgit v1.2.3