The later ARM64 Raspberry Pi hardware is more standard, and you definitely can get most of the hardware working with a mainline Linux kernel. It looks like soun

The later ARM64 Raspberry Pi hardware is more standard, and you definitely can get most of the hardware working with a mainline Linux kernel. It looks like sound may be an outlier - but bcm2835_audio is in staging, and I2S is in the tree proper but that does require additional hardware.