gistfile1.txt

{ pkgs, config, ... }:
{
    hardware.deviceTree.overlays = [
      { name = "dwc2"; dtboFile = /nix/store/6fanghkkwfa8wrcq0khhc0fvm7dym2w3-linux-5.10.17-1.20210303/dtbs/overlays/dwc2.dtbo; }
      { 
        name = "dwc2-overlay"; 
        dtsText = ''
          /dts-v1/;
          /plugin/;
          
          /{
          	compatible = "brcm,bcm2835";
          
          	fragment@0 {
          		target = <&usb>;
          		dwc2_usb: __overlay__ {
          			compatible = "brcm,bcm2835-usb";
          			dr_mode = "otg";
          			g-np-tx-fifo-size = <32>;
          			g-rx-fifo-size = <558>;
          			g-tx-fifo-size = <512 512 512 512 512 256 256>;
          			status = "okay";
          		};
          	};
          };
        '';
      }
    ];
  }