yes, you need to ad din your audio section, currently you only have your graphics section:
Code:
<key>DeviceProperties</key>
<dict>
<key>Add</key>
<dict>
<key>PciRoot(0x0)/Pci(0x2,0x0)</key>
<dict>
<key>AAPL,ig-platform-id</key>
<data>AAAbWQ==</data>
<key>framebuffer-con1-alldata</key>
<data>AQUKAAAIAACHAQAAAgQKAAAIAACHAQAA/wAAAAEAAAAgAAAA</data>
<key>framebuffer-con1-enable</key>
<integer>1</integer>
<key>framebuffer-fbmem</key>
<data>AACQAA==</data>
<key>framebuffer-patch-enable</key>
<integer>1</integer>
<key>framebuffer-stolenmem</key>
<data>AAAwAQ==</data>
</dict>
</dict>
adding an audio section like this for an example:
Code:
<key>PciRoot(0x0)/Pci(0x1F,0x3)</key>
<dict>
<key>AAPL,slot-name</key>
<string>Internal@0,31,3</string>
<key>device-id</key>
<data>
cKEAAA==
</data>
<key>device_type</key>
<string>Audio device</string>
<key>hda-gfx</key>
<string>onboard-1</string>
<key>layout-id</key>
<integer>17</integer>
<key>model</key>
<string>100 Series/C230 Series Chipset Family HD Audio Controller</string>
</dict>
the above is from my laptop, using audio layout "17" yours may differ as per:
Native macOS HD audio for not officially supported codecs - acidanthera/AppleALC
github.com
I tried with you section but not worked, checking you link i'm trying to find my model.
Now i opened my old config.plist where is working in Catalina and Clover, its possible to use the same config in Opencore? I have it in my config.plist (Catalina is working):
<key>Audio</key>
<dict>
<key>Inject</key>
<integer>56</integer>
</dict>
<key>Properties</key>
<dict>
<key>PciRoot(0x0)/Pci(0x2,0x0)</key>
<dict>
<key>AAPL,ig-platform-id</key>
<data>AAAbWQ==</data>
<key>enable-hdmi20</key>
<data>AQAAAA==</data>
<key>framebuffer-con1-busid</key>
<data>BQAAAA==</data>
<key>framebuffer-con1-enable</key>
<data>AQAAAA==</data>
<key>framebuffer-con1-flags</key>
<data>hwEAAA==</data>
<key>framebuffer-con1-index</key>
<data>AQAAAA==</data>
<key>framebuffer-con1-pipe</key>
<data>CQAAAA==</data>
<key>framebuffer-con1-type</key>
<data>AAgAAA==</data>
<key>framebuffer-con2-enable</key>
<data>AQAAAA==</data>
<key>framebuffer-con2-index</key>
<data>/////w==</data>
<key>framebuffer-patch-enable</key>
<data>AQAAAA==</data>
<key>framebuffer-pipecount</key>
<data>AgAAAA==</data>
<key>framebuffer-portcount</key>
<data>AgAAAA==</data>
</dict>
</dict>