47 lines
1.1 KiB
Nix
47 lines
1.1 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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cfg = config.hardware.raspberry-pi."4".audio;
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in
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{
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options.hardware = {
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raspberry-pi."4".audio = {
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enable = lib.mkEnableOption ''
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configuration for audio
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'';
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};
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};
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config = lib.mkIf cfg.enable {
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hardware.deviceTree = {
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overlays = [
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# Equivalent to dtparam=audio=on
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{
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name = "audio-on-overlay";
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dtsText = ''
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/dts-v1/;
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/plugin/;
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/ {
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compatible = "brcm,bcm2711";
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fragment@0 {
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target = <&audio>;
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__overlay__ {
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status = "okay";
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};
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};
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};
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'';
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}
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];
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};
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# set tsched=0 in pulseaudio config to avoid audio glitches
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# see https://wiki.archlinux.org/title/PulseAudio/Troubleshooting#Glitches,_skips_or_crackling
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hardware.pulseaudio.configFile = lib.mkDefault pkgs.runCommand "default.pa" {} ''
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sed 's/module-udev-detect$/module-udev-detect tsched=0/' ${config.hardware.pulseaudio.package}/etc/pulse/default.pa > $out
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'';
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};
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}
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