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authorrobbie zhang <robbie.zhang@intel.com>2015-09-21 16:22:41 -0700
committerAaron Durbin <adurbin@gmail.com>2015-10-11 23:55:20 +0000
commit951f2d3ebb391bf4b08cb0073c96689fa453a94d (patch)
tree330886f2bb71f841fe98edec64a0c3654f3f1419 /src/device/dram
parentba69c7799e68f35cf75113a6a236a9c036ca0ddd (diff)
Skylake: remove the out-dated VR config and un-needed 24mhz calibration
On Skylake, mailbox interface is used to configure VRs, dropping direct msr writing. With current fsp, svid/vr programming seems to be functional - no errors are given in the svid transactions in boot, and hw engineer verified the VRs on Kunimitsu. Additional tunnings might be needed later with power testing. 24mhz calibration is no longer needed on Skylake due to bclk archtecture change. BRANCH=none BUG=chrome-os-partner:45387 TEST=Built and boot on kunimitsu/glados, reboot, S3/resume verified. Signed-off-by: robbie zhang <robbie.zhang@intel.com> Original-Change-Id: If99b5758fcdba8604139c761a07403d4a5d2eb4c Original-Reviewed-on: https://chromium-review.googlesource.com/301470 Original-Commit-Ready: Robbie Zhang <robbie.zhang@intel.com> Original-Tested-by: Robbie Zhang <robbie.zhang@intel.com> Original-Tested-by: Wenkai Du <wenkai.du@intel.com> Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Change-Id: I98acf78aac9c705614fb200f8c3313a89296fbf2 Signed-off-by: robbie zhang <robbie.zhang@intel.com> Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/11811 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com> Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
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