add the correct overlays

config/devterm.nix

@@ -61,4 +61,34 @@
   };
   networking.networkmanager.enable = true;
   users.users.darkkirb.extraGroups = ["networkmanager"];
+  hardware.deviceTree.overlays = [
+    {
+      name = "dwc2";
+      dtsFile = ./devterm/dwc2-overlay.dts;
+    }
+    {
+      name = "cma";
+      dtsFile = ./devterm/cma-overlay.dts;
+    }
+    {
+      name = "vc4-kms-v3d-pi4";
+      dtsFile = ./devterm/vc4-kms-v3d-pi4-overlay.dts;
+    }
+    {
+      name = "devterm-pmu";
+      dtsFile = ./devterm/devterm-pmu-overlay.dts;
+    }
+    {
+      name = "devterm-panel";
+      dtsFile = ./devterm/devterm-panel-overlay.dts;
+    }
+    {
+      name = "devterm-misc";
+      dtsFile = ./devterm/devterm-misc-overlay.dts;
+    }
+    {
+      name = "audremap";
+      dtsFile = ./devterm/audremap-overlay.dts;
+    }
+  ];
 }

config/devterm/audremap-overlay.dts

@@ -0,0 +1,23 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+        compatible = "brcm,bcm2711";
+
+        fragment@0 {
+                target = <&audio_pins>;
+                __overlay__ {
+                    status = "okay";
+                };
+        };
+
+	fragment@1 {
+                target = <&audio_pins>;
+                __overlay__ {
+                        brcm,pins = < 12 13 >;
+                        brcm,function = < 4 >; /* alt0 alt0 */
+                };
+        };
+
+
+};

config/devterm/cma-overlay.dts

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+/ {
+    compatible = "brcm,bcm2711";
+
+    fragment@0 {
+    target = <&cma>;
+    __overlay__ {
+        size = <(384 * 1024 * 1024)>;
+    };
+    };
+};

config/devterm/devterm-misc-overlay.dts

@@ -0,0 +1,87 @@
+/dts-v1/;
+/plugin/;
+
+/{
+	compatible = "brcm,bcm2711";
+
+	fragment@0 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&i2c1_pins>;
+			status = "okay";
+
+			adc101c: adc@54 {
+				reg = <0x54>;
+				compatible = "ti,adc101c";
+				status = "okay";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&spi4>;
+		__overlay__ {
+			pinctrl-names = "default";
+			pinctrl-0 = <&spi4_pins &spi4_cs_pins>;
+			cs-gpios = <&gpio 4 1>;
+			status = "okay";
+
+			spidev4_0: spidev@0 {
+				compatible = "spidev";
+				reg = <0>;      /* CE0 */
+				#address-cells = <1>;
+				#size-cells = <0>;
+				spi-max-frequency = <125000000>;
+				status = "okay";
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&uart1>;
+		__overlay__ {
+			pinctrl-names = "default";
+			pinctrl-0 = <&uart1_pins>;
+			status = "okay";
+		};
+	};
+
+	fragment@3 {
+		target = <&gpio>;
+		__overlay__ {
+
+			i2c1_pins: i2c1 {
+				brcm,pins = <44 45>;
+				brcm,function = <6>;
+			};
+
+			spi4_pins: spi4_pins {
+				brcm,pins = <6 7>;
+				brcm,function = <7>;
+			};
+
+			spi4_cs_pins: spi0_cs_pins {
+				brcm,pins = <4>;
+				brcm,function = <1>;
+			};
+
+			uart1_pins: uart1_pins {
+				brcm,pins = <14 15>;
+				brcm,function = <2>;
+				brcm,pull = <0 2>;
+			};
+
+		};
+	};
+
+	fragment@4 {
+		target-path = "/chosen";
+		__overlay__ {
+			bootargs = "8250.nr_uarts=1";
+		};
+	};
+	
+};

config/devterm/devterm-panel-overlay.dts

@@ -0,0 +1,46 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2711";
+
+	fragment@0 {
+		target=<&dsi1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			port {
+				dsi_out_port: endpoint {
+					remote-endpoint = <&panel_dsi_port>;
+				};
+			};
+
+			panel_cwd686: panel@0 {
+				compatible = "cw,cwd686";
+				reg = <0>;
+				reset-gpio = <&gpio 8 1>;
+				backlight = <&ocp8178_backlight>;
+
+				port {
+					panel_dsi_port: endpoint {
+						remote-endpoint = <&dsi_out_port>;
+					};
+				};
+			};
+		};
+	};
+
+	fragment@1 {
+		target-path = "/";
+		__overlay__  {
+			ocp8178_backlight: backlight@0 {
+				compatible = "ocp8178-backlight";
+				backlight-control-gpios = <&gpio 9 0>;
+				default-brightness = <5>;
+			};
+		};
+	};
+
+};

config/devterm/devterm-pmu-overlay.dts

@@ -0,0 +1,104 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2711";
+
+	fragment@0 {
+		target = <&i2c0if>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			pinctrl-0 = <&i2c0_pins>;
+			pinctrl-names = "default";
+			status = "okay";
+
+			axp22x: pmic@34 {
+				interrupt-controller;
+				#interrupt-cells = <1>;
+				compatible = "x-powers,axp223";
+				reg = <0x34>; /* i2c address */
+				interrupt-parent = <&gpio>;
+				interrupts = <2 8>;  /* IRQ_TYPE_EDGE_FALLING */
+				irq-gpios = <&gpio 2 0>;
+
+				regulators {
+
+					x-powers,dcdc-freq = <3000>;
+
+					reg_aldo1: aldo1 {
+						regulator-always-on;
+						regulator-min-microvolt = <3300000>;
+						regulator-max-microvolt = <3300000>;
+						regulator-name = "audio-vdd";
+					};
+
+					reg_aldo2: aldo2 {
+						regulator-always-on;
+						regulator-min-microvolt = <3300000>;
+						regulator-max-microvolt = <3300000>;
+						regulator-name = "display-vcc";
+					};
+
+					reg_dldo2: dldo2 {
+						regulator-always-on;
+						regulator-min-microvolt = <3300000>;
+						regulator-max-microvolt = <3300000>;
+						regulator-name = "dldo2";
+					};
+
+					reg_dldo3: dldo3 {
+						regulator-always-on;
+						regulator-min-microvolt = <3300000>;
+						regulator-max-microvolt = <3300000>;
+						regulator-name = "dldo3";
+					};
+
+					reg_dldo4: dldo4 {
+						regulator-always-on;
+						regulator-min-microvolt = <3300000>;
+						regulator-max-microvolt = <3300000>;
+						regulator-name = "dldo4";
+					};
+
+				};
+
+				battery_power_supply: battery-power-supply {
+					compatible = "x-powers,axp221-battery-power-supply";
+					monitored-battery = <&battery>;
+				};
+
+				ac_power_supply: ac_power_supply {
+					compatible = "x-powers,axp221-ac-power-supply";
+				};
+
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&i2c0if>;
+		__overlay__ {
+			compatible = "brcm,bcm2708-i2c";
+		};
+	};
+
+	fragment@2 {
+		target-path = "/aliases";
+		__overlay__ {
+			i2c0 = "/soc/i2c@7e205000";
+		};
+	};
+
+	fragment@3 {
+		target-path = "/";
+		__overlay__  {
+			battery: battery@0 {
+				compatible = "simple-battery";
+				constant-charge-current-max-microamp = <2100000>;
+				voltage-min-design-microvolt = <3300000>;
+			};
+		};
+	};
+
+};

config/devterm/dwc2-overlay.dts

@@ -0,0 +1,22 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+    compatible = "brcm,bcm2711";
+
+    fragment@0 {
+    target = <&usb>;
+    #address-cells = <0x01>;
+    #size-cells = <0x01>;
+
+    __overlay__ {
+        compatible = "brcm,bcm2835-usb";
+        dr_mode = "host";
+        g-np-tx-fifo-size = <0x20>;
+        g-rx-fifo-size = <0x22e>;
+        g-tx-fifo-size = <0x200 0x200 0x200 0x200 0x200 0x100 0x100>;
+        status = "okay";
+        phandle = <0x01>;
+    };
+    };
+};

config/devterm/vc4-kms-v3d-pi4-overlay.dts

@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+/ {
+    compatible = "brcm,bcm2711";
+
+    fragment@1 {
+    target = <&fb>;
+    __overlay__ {
+        status = "disabled";
+    };
+    };
+
+    fragment@2 {
+    target = <&firmwarekms>;
+    __overlay__ {
+        status = "okay";
+    };
+    };
+
+    fragment@3 {
+    target = <&v3d>;
+    __overlay__ {
+        status = "okay";
+    };
+    };
+
+    fragment@4 {
+    target = <&vc4>;
+    __overlay__ {
+        status = "okay";
+    };
+    };
+};