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<!DOCTYPE bugzilla SYSTEM "https://bugzilla.yoctoproject.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.6"
          urlbase="https://bugzilla.yoctoproject.org/"
          
          maintainer="it-coreprojects-helpdesk@linuxfoundation.org"
>

    <bug>
          <bug_id>6723</bug_id>
          
          <creation_ts>2014-09-13 19:01:58 +0000</creation_ts>
          <short_desc>hpet: number irqs doesn&apos;t agree with number of timers</short_desc>
          <delta_ts>2017-06-13 18:04:22 +0000</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>12</classification_id>
          <classification>Hardware Platforms</classification>
          <product>MinnowBoard MAX Firmware</product>
          <component>minnowboard-uefi-firmware</component>
          <version>2C A1</version>
          <rep_platform>MinnowBoard Max</rep_platform>
          <op_sys>Multiple</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>MOVED</resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords></keywords>
          <priority>Medium</priority>
          <bug_severity>normal</bug_severity>
          <target_milestone>Production Release</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Marcel Holtmann">marcel</reporter>
          <assigned_to name="Lu_Shifei">shifeix.a.lu</assigned_to>
          <cc>danders</cc>
    
    <cc>david.wei</cc>
    
    <cc>dvhart</cc>
    
    <cc>shifeix.a.lu</cc>
    
    <cc>sjolley.yp.pm</cc>
    
    <cc>yoctoproject</cc>
          
          
          <cf_os>---</cf_os>
          <cf_regression_type>---</cf_regression_type>
          
          <cf_docchange>No (bug/feature does not impact docs)</cf_docchange>

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>45607</commentid>
    <comment_count>0</comment_count>
    <who name="Marcel Holtmann">marcel</who>
    <bug_when>2014-09-13 19:01:58 +0000</bug_when>
    <thetext>I am seeing this message in the boot logs:

x86/hpet: Will disable the HPET for this platform because it&apos;s not reliable

Is this a general Baytrail issue or is something wrong here? I assumed every modern platform has HPET these days. According to kernel sources, we have this comment in there:

        /*                                                                       
         * HPET on current version of Baytrail platform has accuracy             
         * problems, disable it for now:                                         
         */                                                                      
        { PCI_VENDOR_ID_INTEL, 0x0f00,                                           
                PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, force_disable_hpet},

So does this also affect the Baytrail version that is in the Minnowboard or has this been fixed?

If HPET is of course disabled, then this causes also this from the driver:

[    1.927750] hpet: number irqs doesn&apos;t agree with number of timers

Maybe it would be safer to not expose the HPET at all if it is broken anyway.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>45615</commentid>
    <comment_count>1</comment_count>
    <who name="Darren Hart">dvhart</who>
    <bug_when>2014-09-15 16:11:28 +0000</bug_when>
    <thetext>I&apos;m trying to get more detail on this issue from the SoC experts... will report back.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>45638</commentid>
    <comment_count>2</comment_count>
    <who name="Darren Hart">dvhart</who>
    <bug_when>2014-09-16 20:29:28 +0000</bug_when>
    <thetext>It appears this impacts s0ix only, so not Baytrail-I/M. We need to investigate how to ensure this is supported in the OS.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>50753</commentid>
    <comment_count>3</comment_count>
    <who name="Darren Hart">dvhart</who>
    <bug_when>2015-05-04 15:46:23 +0000</bug_when>
    <thetext>Mike, can your team do some initial triage/investigation on this? Are we deliberately disabling the HPET or are we falling back to some default policy which may not apply to this SoC (E38XX)?</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>52608</commentid>
    <comment_count>4</comment_count>
    <who name="David_Wei">david.wei</who>
    <bug_when>2015-07-27 02:04:06 +0000</bug_when>
    <thetext>Assign to Shifei to invesitgate.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>74095</commentid>
    <comment_count>5</comment_count>
    <who name="Stephen K Jolley">sjolley.yp.pm</who>
    <bug_when>2017-06-13 18:04:22 +0000</bug_when>
    <thetext>We are no longer tracking in Yocto Project Bugzilla MinnowBoard and MinnowBoard-MAX HW and firmware bugs.</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>