summaryrefslogtreecommitdiffstats
path: root/makefu/2configs/audio
diff options
context:
space:
mode:
Diffstat (limited to 'makefu/2configs/audio')
-rw-r--r--makefu/2configs/audio/respeaker.nix122
1 files changed, 122 insertions, 0 deletions
diff --git a/makefu/2configs/audio/respeaker.nix b/makefu/2configs/audio/respeaker.nix
new file mode 100644
index 000000000..0aaef5dac
--- /dev/null
+++ b/makefu/2configs/audio/respeaker.nix
@@ -0,0 +1,122 @@
+{ config, lib, pkgs, ... }:
+let
+ seeed-voicecard = (pkgs.callPackage ../../5pkgs/seeed-voicecard { kernel = config.boot.kernelPackages.kernel; });
+in
+{
+ hardware.raspberry-pi."4".i2c1.enable = true;
+ hardware.raspberry-pi."4".audio.enable = true;
+ hardware.raspberry-pi."4".apply-overlays-dtmerge.enable = true;
+ hardware.deviceTree.filter = lib.mkForce "bcm2711-rpi-4-b.dtb";
+
+ security.rtkit.enable = true;
+
+ environment.systemPackages = with pkgs; [
+ alsaUtils
+ i2c-tools
+ ponymix
+ ];
+
+ sound.enable = true;
+ hardware.pulseaudio.enable = lib.mkForce false;
+ services.pipewire = {
+ enable = true;
+ systemWide = true;
+ alsa.enable = true;
+ alsa.support32Bit = true;
+ pulse.enable = true;
+ };
+
+ services.pipewire.config.pipewire-pulse = {
+ "pulse.properties"."server.address" = [ "unix:native" "tcp:4713" ];
+ };
+
+ sound.extraConfig = ''
+ pcm.!default {
+ type asym
+ playback.pcm "playback"
+ capture.pcm "ac108"
+ }
+
+ pcm.ac108 {
+ type plug
+ slave.pcm "hw:seeed4micvoicec"
+ }
+ '' ;
+
+
+ boot.extraModulePackages = [
+ seeed-voicecard
+ ];
+ boot.initrd.kernelModules = [
+ "snd-soc-seeed-voicecard"
+ "snd-soc-ac108"
+ "i2c-dev"
+ #"i2c-bcm2708"
+ #"snd-soc-wm8960"
+ ];
+
+ boot.loader.raspberryPi.firmwareConfig = [
+ "dtparam=i2c_arm=on"
+ "dtparam=i2s=on"
+ "dtparam=spi=on"
+ "dtparam=i2c1=on"
+ # dtoverlay=seeeed-8mic-voicecard not required because we use hardware.deviceTree
+ ];
+ hardware.deviceTree = {
+ enable = true;
+ overlays = [
+ { name = "respeaker-4mic"; dtsFile = "${seeed-voicecard}/lib/dts/seeed-4mic-voicecard-overlay.dts";}
+ { name = "spi"; dtsText = ''
+ /dts-v1/;
+ /plugin/;
+
+ / {
+ compatible = "raspberrypi";
+ fragment@0 {
+ target = <&spi>;
+ __overlay__ {
+ cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spidev@0 {
+ reg = <0>; // CE0
+ spi-max-frequency = <500000>;
+ compatible = "spidev";
+ };
+
+ spidev@1 {
+ reg = <1>; // CE1
+ spi-max-frequency = <500000>;
+ compatible = "spidev";
+ };
+ };
+ };
+ fragment@1 {
+ target = <&alt0>;
+ __overlay__ {
+ // Drop GPIO 7, SPI 8-11
+ brcm,pins = <4 5>;
+ };
+ };
+
+ fragment@2 {
+ target = <&gpio>;
+ __overlay__ {
+ spi0_pins: spi0_pins {
+ brcm,pins = <9 10 11>;
+ brcm,function = <4>; // alt0
+ };
+ spi0_cs_pins: spi0_cs_pins {
+ brcm,pins = <8 7>;
+ brcm,function = <1>; // out
+ };
+ };
+ };
+ };
+ '';}
+ ];
+ };
+}