[coreboot-gerrit] New patch to review for coreboot: google/eve: Set throttle offset to 10 degrees

[Duncan Laurie (dlaurie@chromium.org)]

Duncan Laurie (dlaurie at chromium.org) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/17901

-gerrit

commit 289e31171728bbc8a7b10c0a9a62934146e36387
Author: Duncan Laurie <dlaurie at chromium.org>
Date:   Fri Dec 16 08:01:09 2016 -0800

    google/eve: Set throttle offset to 10 degrees
    
    Set the thermal throttle (prochot) activation to be 10 degrees
    below TJmax so PROCHOT# kicks in at 90C instead of 100C.
    
    BUG=chrome-os-partner:58666
    TEST=boot on eve, check msr value before and after resume:
    > iotools rdmsr 1 0x1a2
    0x000000000a6400e6
    > echo mem > /sys/power/state
    > iotools rdmsr 1 0x1a2
    0x000000000a6400e6
    
    Change-Id: I3ab3a050a1e27c18a940bd7519eabaf015ef93eb
    Signed-off-by: Duncan Laurie <dlaurie at chromium.org>
---
 src/mainboard/google/eve/devicetree.cb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/mainboard/google/eve/devicetree.cb b/src/mainboard/google/eve/devicetree.cb
index efcadd2..6e709b7 100644
--- a/src/mainboard/google/eve/devicetree.cb
+++ b/src/mainboard/google/eve/devicetree.cb
@@ -187,6 +187,7 @@ chip soc/intel/skylake
 	register "speed_shift_enable" = "1"
 	register "dptf_enable" = "1"
 	register "tdp_pl2_override" = "7"
+	register "tcc_offset" = "10"
 
 	device cpu_cluster 0 on
 		device lapic 0 on end