<p>Chris Wang would like Chris Wang to <strong>review</strong> this change.</p><p><a href="https://review.coreboot.org/22588">View Change</a></p><pre style="font-family: monospace,monospace; white-space: pre-wrap;">mb/google/poppy/variants/nautilus: Change IA/GT/SA slow slew rate settings<br><br>Change IA/GT/SA slow slew rate settings.<br>System's audible noise will be reduced with them.<br><br>- Slow slew rate for IA/GT/SA : fast/16<br>- Fast PKG C-state ramp for IA/GT/SA: disabled<br><br>BRANCH=master<br>BUG=b:66462881<br>TEST=compiled/verified<br><br>Change-Id: Ibf11aba7bafb3b02c510905d7d904507eee6394b<br>Signed-off-by: Chris Wang <chriswang@ami.corp-partner.google.com><br>---<br>M src/mainboard/google/poppy/variants/nautilus/devicetree.cb<br>1 file changed, 8 insertions(+), 0 deletions(-)<br><br></pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;">git pull ssh://review.coreboot.org:29418/coreboot refs/changes/88/22588/1</pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;">diff --git a/src/mainboard/google/poppy/variants/nautilus/devicetree.cb b/src/mainboard/google/poppy/variants/nautilus/devicetree.cb<br>index efaea3f..6ee7a52 100644<br>--- a/src/mainboard/google/poppy/variants/nautilus/devicetree.cb<br>+++ b/src/mainboard/google/poppy/variants/nautilus/devicetree.cb<br>@@ -70,6 +70,14 @@<br>   register "pirqg_routing" = "PCH_IRQ11"<br>    register "pirqh_routing" = "PCH_IRQ11"<br> <br>+        # VR Slew rate setting for improving audible noise<br>+   register "AcousticNoiseMitigation" = "1"<br>+ register "FastPkgCRampDisableIa" = "1"<br>+   register "FastPkgCRampDisableGt" = "1"<br>+   register "FastPkgCRampDisableSa" = "1"<br>+   register "SlowSlewRateForIa" = "3"      # Fast/16<br>+        register "SlowSlewRateForGt" = "3"      # Fast/16<br>+        register "SlowSlewRateForSa" = "3"      # Fast/16<br>         # VR Settings Configuration for 4 Domains<br>     #+----------------+-------+-------+-------+-------+<br>   #| Domain/Setting |  SA   |  IA   | GTUS  |  GTS  |<br></pre><p>To view, visit <a href="https://review.coreboot.org/22588">change 22588</a>. To unsubscribe, visit <a href="https://review.coreboot.org/settings">settings</a>.</p><div itemscope itemtype="http://schema.org/EmailMessage"><div itemscope itemprop="action" itemtype="http://schema.org/ViewAction"><link itemprop="url" href="https://review.coreboot.org/22588"/><meta itemprop="name" content="View Change"/></div></div>

<div style="display:none"> Gerrit-Project: coreboot </div>
<div style="display:none"> Gerrit-Branch: master </div>
<div style="display:none"> Gerrit-MessageType: newchange </div>
<div style="display:none"> Gerrit-Change-Id: Ibf11aba7bafb3b02c510905d7d904507eee6394b </div>
<div style="display:none"> Gerrit-Change-Number: 22588 </div>
<div style="display:none"> Gerrit-PatchSet: 1 </div>
<div style="display:none"> Gerrit-Owner: Chris Wang <chriswang@ami.com.tw> </div>
<div style="display:none"> Gerrit-Reviewer: Chris Wang <chriswang@ami.corp-partner.google.com> </div>