mirror of
https://github.com/NixOS/nixos-hardware
synced 2024-10-31 16:19:42 +01:00
raspberrypi."4": add DigiAMP+ overlay
This commit is contained in:
parent
71e0de7199
commit
11d50c5d52
2 changed files with 94 additions and 0 deletions
|
@ -15,6 +15,7 @@
|
|||
./pwm0.nix
|
||||
./pkgs-overlays.nix
|
||||
./xhci.nix
|
||||
./digi-amp-plus.nix
|
||||
];
|
||||
|
||||
boot = {
|
||||
|
|
93
raspberry-pi/4/digi-amp-plus.nix
Normal file
93
raspberry-pi/4/digi-amp-plus.nix
Normal file
|
@ -0,0 +1,93 @@
|
|||
{ config, lib, ... }:
|
||||
|
||||
let
|
||||
cfg = config.hardware.raspberry-pi."4".digi-amp-plus;
|
||||
in
|
||||
{
|
||||
options.hardware = {
|
||||
raspberry-pi."4".digi-amp-plus = {
|
||||
enable = lib.mkEnableOption ''
|
||||
support for the IQaudIO DigiAMP+ Hat.
|
||||
'';
|
||||
|
||||
unmuteAmp = lib.mkOption {
|
||||
type = lib.types.bool;
|
||||
default = false;
|
||||
description = lib.mdDoc ''
|
||||
"one-shot" unmute when kernel module first loads.
|
||||
'';
|
||||
};
|
||||
|
||||
autoMuteAmp = lib.mkOption {
|
||||
type = lib.types.bool;
|
||||
default = true;
|
||||
description = lib.mdDoc ''
|
||||
Unmute the amp when an ALSA device is opened by a client. Mute, with a five-second delay when the ALSA device is closed.
|
||||
(Reopening the device within the five-second close window will cancel mute.)
|
||||
'';
|
||||
};
|
||||
};
|
||||
};
|
||||
|
||||
config = lib.mkIf cfg.enable {
|
||||
hardware.raspberry-pi."4".apply-overlays-dtmerge.enable = lib.mkDefault true;
|
||||
|
||||
hardware.deviceTree = {
|
||||
overlays = [
|
||||
# Adapted from to: https://github.com/raspberrypi/linux/blob/3ed6d34d53e94ecbebc64c8fa3d1b6d3c41db8fb/arch/arm/boot/dts/overlays/iqaudio-dacplus-overlay.dts
|
||||
# changes:
|
||||
# - modified top-level "compatible" field from bcm2835 to bcm2711
|
||||
# - s/i2s_clk_producer/i2s/ (name on bcm2711 platform)
|
||||
{
|
||||
name = "iqaudio-digiampplus-overlay";
|
||||
dtsText = ''
|
||||
/dts-v1/;
|
||||
/plugin/;
|
||||
|
||||
/ {
|
||||
compatible = "brcm,bcm2711";
|
||||
|
||||
fragment@0 {
|
||||
target = <&i2s>;
|
||||
__overlay__ {
|
||||
status = "okay";
|
||||
};
|
||||
};
|
||||
|
||||
fragment@1 {
|
||||
target = <&i2c1>;
|
||||
__overlay__ {
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
status = "okay";
|
||||
|
||||
pcm5122@4c {
|
||||
#sound-dai-cells = <0>;
|
||||
compatible = "ti,pcm5122";
|
||||
reg = <0x4c>;
|
||||
AVDD-supply = <&vdd_3v3_reg>;
|
||||
DVDD-supply = <&vdd_3v3_reg>;
|
||||
CPVDD-supply = <&vdd_3v3_reg>;
|
||||
status = "okay";
|
||||
};
|
||||
};
|
||||
};
|
||||
|
||||
fragment@2 {
|
||||
target = <&sound>;
|
||||
iqaudio_dac: __overlay__ {
|
||||
compatible = "iqaudio,iqaudio-dac";
|
||||
i2s-controller = <&i2s>;
|
||||
mute-gpios = <&gpio 22 0>;
|
||||
status = "okay";
|
||||
${lib.optionalString cfg.unmuteAmp "iqaudio-dac,unmute-amp;"}
|
||||
${lib.optionalString cfg.autoMuteAmp "iqaudio-dac,auto-mute-amp;"}
|
||||
};
|
||||
};
|
||||
};
|
||||
'';
|
||||
}
|
||||
];
|
||||
};
|
||||
};
|
||||
}
|
Loading…
Reference in a new issue