diff --git a/hosts/pi/default.nix b/hosts/pi/default.nix index 29907fb..d413f52 100644 --- a/hosts/pi/default.nix +++ b/hosts/pi/default.nix @@ -18,7 +18,57 @@ deviceTree = { enable = true; overlays = [ - { name = "hifiberry-digi-pro"; dtboFile = "${pkgs.device-tree_rpi.overlays}/hifiberry-digi-pro.dtbo"; } + { + # Adapted from: https://github.com/raspberrypi/linux/blob/rpi-6.1.y/arch/arm/boot/dts/overlays/hifiberry-digi-pro-overlay.dts + # changes: + # - modified top-level "compatible" field from bcm2835 to bcm2711 + # - s/i2s_clk_consumer/i2s/ (name on bcm2711 platform) + name = "hifiberry-digi-pro"; + 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"; + + wm8804@3b { + #sound-dai-cells = <0>; + compatible = "wlf,wm8804"; + reg = <0x3b>; + PVDD-supply = <&vdd_3v3_reg>; + DVDD-supply = <&vdd_3v3_reg>; + status = "okay"; + }; + }; + }; + + fragment@2 { + target = <&sound>; + __overlay__ { + compatible = "hifiberry,hifiberry-digi"; + i2s-controller = <&i2s>; + status = "okay"; + clock44-gpio = <&gpio 5 0>; + clock48-gpio = <&gpio 6 0>; + }; + }; + }; + ''; + }; ]; }; firmware = with pkgs; [