DietPi: creating a lean-and-mean Roon Bridge

[RBM (René)]

We visited this before: the audio patches were once part of the next-branch kernel, but it looks like they never made the ‘official’ kernel:

High-res on RPi3 HDMI

@CJ1045 @StuartB: I did some poking around: it appears that the current RPI sound drivers (for on-board sound and HDMI) in Raspbian still limit Alsa to 48kHz. Fixing this would involve applying patches and/or kernel recompiling. I upgraded my Pi to the 4.4.x kernel branch sudo BRANCH=next rpi-update which has these patches already applied. It appears that all rates up to 192kHz are now available on HDMI: [image] I don’t have the equipment to test, but this will probably work. One word …

It’s still kind of hacky though – 192kHz is possible, but limited to 16-bit. I guess PiCorePlayer uses these patches as well.