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APLMCA(4) Device Drivers Manual (arm64) APLMCA(4)

aplmcaApple MCA controller

aplmca* at fdt?

aplmca is a driver for the MCA controller integrated on various Apple SoCs. This controller serializes audio data streams received from the apldma(4) DMA controller and sends these out as I2S/TDM streams on the audio interfaces of the SoCs.

aplaudio(4), apldma(4), aplnco(4), intro(4)

The aplmca driver first appeared in OpenBSD 7.2.

The aplmca driver was written by Mark Kettenis <>.

August 6, 2022 OpenBSD-current