Tuesday, May 31, 2022

Gemini Lake HD Audio (azalia?) not working on StarLabs StarLite MK IV

Hi,

I have a StarLabs StarLite mk iv laptop with Gemini Lake CPU and audio
device is "not configured".

Relevant pcidump -vv output:
0:14:0: Intel Gemini Lake HD Audio
0x0000: Vendor ID: 8086, Product ID: 3198
0x0004: Command: 0006, Status: 0010
0x0008: Class: 04 Multimedia, Subclass: 01 Audio,
Interface: 00, Revision: 06
0x000c: BIST: 00, Header Type: 00, Latency Timer: 00,
Cache Line Size: 10
0x0010: BAR mem 64bit addr: 0x000000009111c000/0x00004000
0x0018: BAR empty (00000000)
0x001c: BAR empty (00000000)
0x0020: BAR mem 64bit addr: 0x0000000091000000/0x00100000
0x0028: Cardbus CIS: 00000000
0x002c: Subsystem Vendor ID: 8086 Product ID: 7270
0x0030: Expansion ROM Base Address: 00000000
0x0038: 00000000
0x003c: Interrupt Pin: 01 Line: ff Min Gnt: 00 Max Lat: 00
0x0050: Capability 0x01: Power Management
State: D0
0x0080: Capability 0x09: Vendor Specific
0x0060: Capability 0x05: Message Signalled Interrupts (MSI)
Enabled: no
0x0070: Capability 0x10: PCI Express
Max Payload Size: 128 / 128 bytes
Max Read Request Size: 512 bytes
0x0100: Enhanced Capability 0x00: Unknown

Relevant dmesg output:
cpu0: Intel(R) Pentium(R) Silver N5030 CPU @ 1.10GHz, 2800.01 MHz, 06-7a-08
"Intel Gemini Lake HD Audio" rev 0x06 at pci0 dev 14 function 0 not configured

Digging into the /sys source code, I found that it should be handled by azalia driver:

# grep -r PCI_PRODUCT_INTEL_GLK_HDA .
./dev/pci/azalia.c: case PCI_PRODUCT_INTEL_GLK_HDA:
./dev/pci/pcidevs.h:#define PCI_PRODUCT_INTEL_GLK_HDA 0x3198 /* Gemini Lake HD Audio */
./dev/pci/pcidevs_data.h: PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_GLK_HDA,


I'm wondering why it could not be configured and how to dig into this?

Any advice appreciated.

Best regards,
Chris Narkiewicz

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