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amd/amdfam10: Fix invalid transition latency in PowerNow! _PSS objects 

Fix a mistake that led to an invalid 0ms latency in the automatically
generated PowerNow! ACPI _PSS objects.

TEST: Booted FreeBSD and Linux and verified correct latency values.

Found-by: Coverity Scan
Change-Id: I03cecab694708136dc555ca2af7ee9a0bf9be5af
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/8376
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
This commit is contained in:
Timothy Pearson 2015-02-06 16:07:53 -06:00 committed by Alexandru Gagniuc
parent 2213843ae8
commit c1f47c1460
1 changed files with 1 additions and 1 deletions
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2
src/cpu/amd/model_10xxx/powernow_acpi.c
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@ -212,7 +212,7 @@ static void pstates_algorithm(u32 pcontrol_blk, u8 plen, u8 onlyBSP)
power_step_up = (dtemp & 0xf000000) >> 24;
power_step_down = (dtemp & 0xf00000) >> 20;
dtemp = pci_read_config32(dev_find_slot(0, PCI_DEVFN(0x18, 3)), 0xA0);
pll_lock_time = (pll_lock_time & 0x3800) >> 11;
pll_lock_time = (dtemp & 0x3800) >> 11;
if (all_enabled_cores_have_same_cpufid)
core_latency = ((12 * power_step_down) + power_step_up) / 1000;
else