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<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav> <ul class="sidebar-links"><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Introduction</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/" aria-current="page" class="sidebar-link">Getting Started With ACPI</a></li><li><a href="/Getting-Started-With-ACPI/ssdt-platform.html" class="sidebar-link">Choosing the SSDTs</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Methods</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/ssdt-methods/ssdt-methods.html" class="sidebar-link">How to create SSDTs</a></li><li><section class="sidebar-group is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/ssdt-methods/ssdt-prebuilt.html" class="sidebar-link">Prebuilt SSDTs</a></li><li><a href="/Getting-Started-With-ACPI/ssdt-methods/ssdt-easy.html" class="sidebar-link">SSDTs: The easy way</a></li><li><a href="/Getting-Started-With-ACPI/ssdt-methods/ssdt-long.html" class="sidebar-link">SSDTs: The long way</a></li></ul></section></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Manual</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/Manual/dump.html" class="sidebar-link">Getting a copy of your DSDT</a></li><li><a href="/Getting-Started-With-ACPI/Manual/compile.html" class="sidebar-link">Compiling and decompiling ACPI Tables</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Desktop</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/Desktops/desktop-disable.html" class="sidebar-link">Disabling desktop dGPUs</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Laptop</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/Laptops/backlight.html" class="sidebar-link">Fixing Backlight</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <span class="arrow right"></span></p> <!----></section></li><li><a href="/Getting-Started-With-ACPI/Laptops/trackpad.html" class="sidebar-link">Fixing Trackpad</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <span class="arrow right"></span></p> <!----></section></li><li><a href="/Getting-Started-With-ACPI/Laptops/laptop-disable.html" class="sidebar-link">Disabling laptop dGPUs</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading open"><span>Universal</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/Universal/ec-fix.html" class="sidebar-link">Embedded Controller</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <span class="arrow right"></span></p> <!----></section></li><li><a href="/Getting-Started-With-ACPI/Universal/plug.html" class="sidebar-link">CPU Power Management</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <span class="arrow right"></span></p> <!----></section></li><li><a href="/Getting-Started-With-ACPI/Universal/awac.html" class="sidebar-link">AWAC vs RTC</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <span class="arrow right"></span></p> <!----></section></li><li><a href="/Getting-Started-With-ACPI/Universal/nvram.html" class="sidebar-link">NVRAM PMC</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <span class="arrow right"></span></p> <!----></section></li><li><a href="/Getting-Started-With-ACPI/Universal/rhub.html" class="sidebar-link">USB RHUB</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <span class="arrow right"></span></p> <!----></section></li><li><a href="/Getting-Started-With-ACPI/Universal/imei.html" class="sidebar-link">IMEI</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <span class="arrow right"></span></p> <!----></section></li><li><a href="/Getting-Started-With-ACPI/Universal/unc0.html" class="sidebar-link">Fixing Uncore Bridge</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <span class="arrow right"></span></p> <!----></section></li><li><a href="/Getting-Started-With-ACPI/Universal/smbus.html" class="sidebar-link">Fixing SMBus Support</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading open"><span>Methods</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/Universal/smbus-methods/manual.html" aria-current="page" class="active sidebar-link">Manual</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/Getting-Started-With-ACPI/Universal/smbus-methods/manual.html#finding-the-acpi-path" class="sidebar-link">Finding the ACPI path</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/Getting-Started-With-ACPI/Universal/smbus-methods/manual.html#hackintool" class="sidebar-link">Hackintool</a></li><li class="sidebar-sub-header"><a href="/Getting-Started-With-ACPI/Universal/smbus-methods/manual.html#devicemanager" class="sidebar-link">DeviceManager</a></li></ul></li><li class="sidebar-sub-header"><a href="/Getting-Started-With-ACPI/Universal/smbus-methods/manual.html#edits-to-the-sample-ssdt" class="sidebar-link">Edits to the sample SSDT</a></li></ul></li></ul></section></li><li><a href="/Getting-Started-With-ACPI/Universal/irq.html" class="sidebar-link">IRQ Fix</a></li><li><a href="/Getting-Started-With-ACPI/Universal/spoof.html" class="sidebar-link">GPU Spoof</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Cleanup</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/cleanup.html" class="sidebar-link">Cleanup</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Misc</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/troubleshooting.html" class="sidebar-link">Troubleshooting</a></li><li><a href="/Getting-Started-With-ACPI/CONTRIBUTING.html" class="sidebar-link">Contributing</a></li></ul></section></li></ul> </aside> <main class="page"> <div class="theme-succinct-content content__default"><h1 id="fixing-smbus-support-manual"><a href="#fixing-smbus-support-manual" class="header-anchor">#</a> Fixing SMBus support: Manual</h1> <ul><li><a href="#finding-the-acpi-path">Finding the ACPI path</a> <ul><li><a href="#hackintool">Hackintool</a></li> <li><a href="#devicemanager">DeviceManager</a></li></ul></li> <li><a href="#edits-to-the-sample-ssdt">Edits to the sample SSDT</a></li> <li><a href="#compiling-the-ssdt">Compiling the SSDT</a></li> <li><a href="#wrapping-up">Wrapping up</a></li></ul> <h2 id="finding-the-acpi-path"><a href="#finding-the-acpi-path" class="header-anchor">#</a> Finding the ACPI path</h2> <p>So to find the ACPI pathing of our SMBus, we've got 2 methods:</p> <ul><li><a href="#hackintool">Hackintool</a></li> <li><a href="#devicemanager">DeviceManager</a></li></ul> <h3 id="hackintool"><a href="#hackintool" class="header-anchor">#</a> Hackintool</h3> <p>To find the correct pathing for your devices, grab <a href="https://www.tonymacx86.com/threads/release-hackintool-v3-x-x.254559/" target="_blank" rel="noopener noreferrer">Hackintool<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a> (<a href="https://github.com/headkaze/Hackintool" target="_blank" rel="noopener noreferrer">Github link<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a>) and head to the PCI tab:</p> <p><img src="/Getting-Started-With-ACPI/assets/img/pci.81a3ae52.png" alt=""></p> <p>Look for the SMBus device under Subclass, then look beside and you'll see the ACPI path(under IOReg Name). To convert , omit <code>@...</code></p> <ul><li><code>/PC00@0/SMBS@1F,4</code> -> <code>PC00.SMBS</code></li></ul> <p>With the ACPI pathing, you can now head here: <a href="#edits-to-the-sample-ssdt">Edits to the sample SSDT</a></p> <h3 id="devicemanager"><a href="#devicemanager" class="header-anchor">#</a> DeviceManager</h3> <p>If you already have Windows installed on this machine, finding the SMBus pathing is fairly easy.</p> <p>Start by opening up Device Manager in Windows and looking for a device named <code>SMBUS</code>. Once found, click on it and select the <code>BIOS device Name</code> entry. You should get something like this:</p> <p><img src="/Getting-Started-With-ACPI/assets/img/smbus.d9dd6044.png" alt=""></p> <p>From the above example, we can see the SMBus is located at:</p> <div class="language- extra-class"><pre class="language-text"><code>PC00.SMBS
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</code></pre></div><p>With the ACPI pathing, you can now head here: <a href="#edits-to-the-sample-ssdt">Edits to the sample SSDT</a></p> <h2 id="edits-to-the-sample-ssdt"><a href="#edits-to-the-sample-ssdt" class="header-anchor">#</a> Edits to the sample SSDT</h2> <p>Now that we know the ACPI pathing of the SMBus, we can finally start editing the our SSDT.</p> <ul><li><a href="https://github.com/acidanthera/OpenCorePkg/tree/master/Docs/AcpiSamples/Source/SSDT-SBUS-MCHC.dsl" target="_blank" rel="noopener noreferrer">SSDT-SBUS-MCHC.dsl<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li></ul> <p>So the important parts we care about are:</p> <p><strong>Before</strong>:</p> <div class="language- extra-class"><pre class="language-text"><code>External (_SB_.PCI0, DeviceObj) <- Rename this
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External (_SB_.PCI0.SBUS.BUS0, DeviceObj) <- Rename this
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Scope (_SB.PCI0) <- Rename this
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{
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Device (MCHC)
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{
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Name (_ADR, Zero) // _ADR: Address
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}
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}
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Device (_SB.PCI0.SBUS.BUS0) <- Rename this
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</code></pre></div><p><img src="/Getting-Started-With-ACPI/assets/img/before-rename.c0ccc637.png" alt=""></p> <p>Following the example SMBus pathing we found, the SSDT should look something like this:</p> <p><strong>After</strong>:</p> <div class="language- extra-class"><pre class="language-text"><code>External (_SB_.PC00, DeviceObj) <- Renamed
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External (_SB_.PC00.SMBS.BUS0, DeviceObj) <- Renamed
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Scope (_SB.PC00) <- Renamed
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{
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Device (MCHC)
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{
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Name (_ADR, Zero) // _ADR: Address
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}
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}
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Device (_SB.PC00.SMBS.BUS0) <- Renamed
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</code></pre></div><p><img src="/Getting-Started-With-ACPI/assets/img/after-rename.48bf32ad.png" alt=""></p> <h1 id="compiling-the-ssdt"><a href="#compiling-the-ssdt" class="header-anchor">#</a> Compiling the SSDT</h1> <p>With the SSDT done, you're now <a href="/Getting-Started-With-ACPI/Manual/compile.html">ready to compile the SSDT!</a></p> <h1 id="wrapping-up"><a href="#wrapping-up" class="header-anchor">#</a> Wrapping up</h1> <p>Once you're done making your SSDT, either head to the next page to finish the rest of the SSDTs or head here if you're ready to wrap up:</p> <ul><li><a href="/Getting-Started-With-ACPI/cleanup.html"><strong>Cleanup</strong></a></li></ul> <h1 id="verify-it-s-working"><a href="#verify-it-s-working" class="header-anchor">#</a> Verify it's working</h1> <p>Once you've installed macOS, you can actually check whether your SSDT-SBUS-MCHC is working or not in terminal:</p> <div class="language- extra-class"><pre class="language-text"><code>kextstat | grep -E "AppleSMBusController|AppleSMBusPCI"
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</code></pre></div><p><img src="/Getting-Started-With-ACPI/assets/img/verify.58363d4d.png" alt=""></p></div> <footer class="page-edit"><div class="edit-link"><a href="https://github.com/dortania/Getting-Started-With-ACPI/edit/master/Universal/smbus-methods/manual.md" target="_blank" rel="noopener noreferrer">Help us improve this page!</a> <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></div> <div class="last-updated"><span class="prefix">Last Updated:</span> <span class="time">1/9/2021, 3:36:39 AM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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