[HW] SPH0645LM4H-B

[anchored-archer]

Component

• Name: SPH0645LM4H-B
• Part reference in KiCad: MK? (the audio file)
• Commit: 3f224feff09efe01e1ca54df1f9729093858fda1
• Subsystem: Audio

Digital MEMS microphone providing mono audio capture. Outputs 24-bit PCM data over an I²S interface directly to the SoC, without requiring an external analog preamp or ADC.

Kernel Handling Required?

• Yes (must be supported in kernel/DTS to function)
• No (hardware is always-on, transparent, or managed indirectly - no kernel changes required. The issue can be closed)
• TBD (unclear - needs investigation)

Feasibility

• Supported (upstream driver available)
• Partial (limited or community support)
• Unsupported (no driver; replacement should be considered)

References

• Datasheet / Digikey link: https://www.digikey.com/en/products/detail/syntiant/sph0645lm4h-b/5332440
  https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/908/SPH0645LM4H-B.pdf
• Upstream driver / patches: https://github.com/AntarcticBear/sph0645lm4h-rpi
• Related issues:

Additional Info

[anchored-archer]

I may or may not be trying to work on this in the middle of the exam. I am still new to dts