<p>Shelley Chen has uploaded this change for <strong>review</strong>.</p><p><a href="https://review.coreboot.org/27780">View Change</a></p><pre style="font-family: monospace,monospace; white-space: pre-wrap;">mb/google/poppy/variants/nami: Enable mbox command for ISL VR c-state issue<br><br>There is a potential IMVP8 issue for KBL that affects Intersil VRs<br>Nami is using one of the affected parts. The fix is to use an updated<br>microcode and also send a mailbox box command from FSP.<br><br>BUG=b:112081534<br>BRANCH=None<br>TEST=Build and boot Nami<br>     Verify that suspend/resume and consecutive reboots are working<br><br>Change-Id: I6ec18a4c3fae6a66cf8a95685d91a8ba51e2697c<br>Signed-off-by: Shelley Chen <shchen@google.com><br>---<br>M src/mainboard/google/poppy/variants/nami/devicetree.cb<br>1 file changed, 4 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/80/27780/1</pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;"><span>diff --git a/src/mainboard/google/poppy/variants/nami/devicetree.cb b/src/mainboard/google/poppy/variants/nami/devicetree.cb</span><br><span>index 54d989f..fe105cb 100644</span><br><span>--- a/src/mainboard/google/poppy/variants/nami/devicetree.cb</span><br><span>+++ b/src/mainboard/google/poppy/variants/nami/devicetree.cb</span><br><span>@@ -59,6 +59,10 @@</span><br><span>       register "PmTimerDisabled" = "1"</span><br><span>         register "VmxEnable" = "1"</span><br><span> </span><br><span style="color: hsl(120, 100%, 40%);">+    # Intersil VR c-state issue workaround</span><br><span style="color: hsl(120, 100%, 40%);">+        # send VR mailbox command for IA/GT/SA rails</span><br><span style="color: hsl(120, 100%, 40%);">+  register "IslVrCmd" = "2"</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span>      register "pirqa_routing" = "PCH_IRQ11"</span><br><span>   register "pirqb_routing" = "PCH_IRQ10"</span><br><span>   register "pirqc_routing" = "PCH_IRQ11"</span><br><span></span><br></pre><p>To view, visit <a href="https://review.coreboot.org/27780">change 27780</a>. To unsubscribe, or for help writing mail filters, 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/27780"/><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: I6ec18a4c3fae6a66cf8a95685d91a8ba51e2697c </div>
<div style="display:none"> Gerrit-Change-Number: 27780 </div>
<div style="display:none"> Gerrit-PatchSet: 1 </div>
<div style="display:none"> Gerrit-Owner: Shelley Chen <shchen@google.com> </div>