| <!DOCTYPE html> |
| |
| <html lang="en" data-content_root="../../../"> |
| <head> |
| <meta charset="utf-8" /> |
| <meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="viewport" content="width=device-width, initial-scale=1" /> |
| |
| <title>power-mgt/psr — skiboot d365a01 |
| documentation</title> |
| <link rel="stylesheet" type="text/css" href="../../../_static/pygments.css?v=fa44fd50" /> |
| <link rel="stylesheet" type="text/css" href="../../../_static/classic.css?v=514cf933" /> |
| |
| <script src="../../../_static/documentation_options.js?v=e1fecbe9"></script> |
| <script src="../../../_static/doctools.js?v=888ff710"></script> |
| <script src="../../../_static/sphinx_highlight.js?v=dc90522c"></script> |
| |
| <link rel="index" title="Index" href="../../../genindex.html" /> |
| <link rel="search" title="Search" href="../../../search.html" /> |
| <link rel="next" title="Secvar Binding" href="../secvar.html" /> |
| <link rel="prev" title="power-mgt/powercap" href="powercap.html" /> |
| </head><body> |
| <div class="related" role="navigation" aria-label="related navigation"> |
| <h3>Navigation</h3> |
| <ul> |
| <li class="right" style="margin-right: 10px"> |
| <a href="../../../genindex.html" title="General Index" |
| accesskey="I">index</a></li> |
| <li class="right" > |
| <a href="../secvar.html" title="Secvar Binding" |
| accesskey="N">next</a> |</li> |
| <li class="right" > |
| <a href="powercap.html" title="power-mgt/powercap" |
| accesskey="P">previous</a> |</li> |
| <li class="nav-item nav-item-0"><a href="../../../index.html">skiboot d365a01 |
| documentation</a> »</li> |
| <li class="nav-item nav-item-1"><a href="../../index.html" >Device Tree</a> »</li> |
| <li class="nav-item nav-item-2"><a href="../../ibm%2Copal.html" >ibm,opal</a> »</li> |
| <li class="nav-item nav-item-3"><a href="../power-mgt.html" accesskey="U">ibm,opal/power-mgt device tree entries</a> »</li> |
| <li class="nav-item nav-item-this"><a href="">power-mgt/psr</a></li> |
| </ul> |
| </div> |
| |
| <div class="document"> |
| <div class="documentwrapper"> |
| <div class="bodywrapper"> |
| <div class="body" role="main"> |
| |
| <section id="power-mgt-psr"> |
| <h1>power-mgt/psr<a class="headerlink" href="#power-mgt-psr" title="Link to this heading">¶</a></h1> |
| <p>Some systems allow modification of how power consumption throttling |
| is balanced between entities in a system. A typical one may be how the power |
| management complex should balance throttling CPU versus the GPU. An OPAL |
| call can be used to set these ratios, which are described in the device |
| tree.</p> |
| <p>In the future, there may be more available settings than just CPU |
| versus GPU.</p> |
| <p>Each child node in the “psr” node represents a configurable psr |
| sensor.</p> |
| <dl class="simple"> |
| <dt>For example<span class="classifier">::</span></dt><dd><p>cpu-to-gpu@1</p> |
| </dd> |
| </dl> |
| <p>The compatible property is set to “ibm,opal-power-shift-ratio”.</p> |
| <p>Each child node has below properties:</p> |
| <dl class="simple"> |
| <dt><cite>handle</cite></dt><dd><p>Handle to indicate the type of psr</p> |
| </dd> |
| <dt><cite>label</cite></dt><dd><p>Name of the psr sensor</p> |
| </dd> |
| </dl> |
| <p>The format of the handle is internal, and <code class="docutils literal notranslate"><span class="pre">not</span></code> ABI, although |
| currently it uses the following encoding</p> |
| <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">|</span> <span class="n">Class</span> <span class="o">|</span><span class="n">Reserved</span><span class="o">|</span> <span class="n">RID</span> <span class="o">|</span> <span class="n">Type</span> <span class="o">|</span> |
| <span class="o">|-------|--------|------|------|</span> |
| </pre></div> |
| </div> |
| <div class="highlight-dts notranslate"><div class="highlight"><pre><span></span><span class="nc">power-mgt</span> <span class="p">{</span> |
| <span class="nc">psr</span> <span class="p">{</span> |
| <span class="nf">compatible</span> <span class="o">=</span> <span class="s">"ibm,opal-power-shift-ratio"</span><span class="p">;</span> |
| |
| <span class="nc">cpu-to-gpu</span><span class="nf">@0</span> <span class="p">{</span> |
| <span class="nf">name</span> <span class="o">=</span> <span class="s">"cpu-to-gpu"</span><span class="p">;</span> |
| <span class="nf">handle</span> <span class="o">=</span> <span class="p"><</span><span class="mh">0x00000000</span><span class="p">>;</span> |
| <span class="nf">label</span> <span class="o">=</span> <span class="s">"cpu_to_gpu_0"</span><span class="p">;</span> |
| <span class="p">};</span> |
| |
| <span class="nc">cpu-to-gpu</span><span class="nf">@1</span> <span class="p">{</span> |
| <span class="nf">name</span> <span class="o">=</span> <span class="s">"cpu-to-gpu"</span><span class="p">;</span> |
| <span class="nf">handle</span> <span class="o">=</span> <span class="p"><</span><span class="mh">0x00000100</span><span class="p">>;</span> |
| <span class="nf">label</span> <span class="o">=</span> <span class="s">"cpu_to_gpu_1"</span><span class="p">;</span> |
| <span class="p">};</span> |
| <span class="p">};</span> |
| <span class="p">};</span> |
| </pre></div> |
| </div> |
| </section> |
| |
| |
| <div class="clearer"></div> |
| </div> |
| </div> |
| </div> |
| <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> |
| <div class="sphinxsidebarwrapper"> |
| <div> |
| <h4>Previous topic</h4> |
| <p class="topless"><a href="powercap.html" |
| title="previous chapter">power-mgt/powercap</a></p> |
| </div> |
| <div> |
| <h4>Next topic</h4> |
| <p class="topless"><a href="../secvar.html" |
| title="next chapter">Secvar Binding</a></p> |
| </div> |
| <div role="note" aria-label="source link"> |
| <h3>This Page</h3> |
| <ul class="this-page-menu"> |
| <li><a href="../../../_sources/device-tree/ibm,opal/power-mgt/psr.rst.txt" |
| rel="nofollow">Show Source</a></li> |
| </ul> |
| </div> |
| <div id="searchbox" style="display: none" role="search"> |
| <h3 id="searchlabel">Quick search</h3> |
| <div class="searchformwrapper"> |
| <form class="search" action="../../../search.html" method="get"> |
| <input type="text" name="q" aria-labelledby="searchlabel" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"/> |
| <input type="submit" value="Go" /> |
| </form> |
| </div> |
| </div> |
| <script>document.getElementById('searchbox').style.display = "block"</script> |
| </div> |
| </div> |
| <div class="clearer"></div> |
| </div> |
| <div class="related" role="navigation" aria-label="related navigation"> |
| <h3>Navigation</h3> |
| <ul> |
| <li class="right" style="margin-right: 10px"> |
| <a href="../../../genindex.html" title="General Index" |
| >index</a></li> |
| <li class="right" > |
| <a href="../secvar.html" title="Secvar Binding" |
| >next</a> |</li> |
| <li class="right" > |
| <a href="powercap.html" title="power-mgt/powercap" |
| >previous</a> |</li> |
| <li class="nav-item nav-item-0"><a href="../../../index.html">skiboot d365a01 |
| documentation</a> »</li> |
| <li class="nav-item nav-item-1"><a href="../../index.html" >Device Tree</a> »</li> |
| <li class="nav-item nav-item-2"><a href="../../ibm%2Copal.html" >ibm,opal</a> »</li> |
| <li class="nav-item nav-item-3"><a href="../power-mgt.html" >ibm,opal/power-mgt device tree entries</a> »</li> |
| <li class="nav-item nav-item-this"><a href="">power-mgt/psr</a></li> |
| </ul> |
| </div> |
| <div class="footer" role="contentinfo"> |
| © Copyright 2016-2017, IBM, others. |
| Created using <a href="https://www.sphinx-doc.org/">Sphinx</a> 7.2.6. |
| </div> |
| </body> |
| </html> |
