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