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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/bus/palmbus.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Ralink PalmBus
+
+maintainers:
+ - Sergio Paracuellos <sergio.paracuellos@gmail.com>
+
+description: |
+ The ralink palmbus controller can be found in all ralink MIPS
+ SoCs. It provides an external bus for connecting multiple
+ external devices to the SoC.
+
+properties:
+ $nodename:
+ pattern: "^palmbus(@[0-9a-f]+)?$"
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 1
+
+ compatible:
+ const: palmbus
+
+ reg:
+ maxItems: 1
+
+ ranges: true
+
+patternProperties:
+ # All other properties should be child nodes with unit-address and 'reg'
+ "@[0-9a-f]+$":
+ type: object
+ additionalProperties: true
+ properties:
+ reg:
+ maxItems: 1
+
+ required:
+ - reg
+
+required:
+ - compatible
+ - reg
+ - "#address-cells"
+ - "#size-cells"
+ - ranges
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/mips-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ palmbus@1e000000 {
+ compatible = "palmbus";
+ reg = <0x1e000000 0x100000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x0 0x1e000000 0x0fffff>;
+
+ gpio@600 {
+ #gpio-cells = <2>;
+ #interrupt-cells = <2>;
+ compatible = "mediatek,mt7621-gpio";
+ gpio-controller;
+ gpio-ranges = <&pinctrl 0 0 95>;
+ interrupt-controller;
+ reg = <0x600 0x100>;
+ interrupt-parent = <&gic>;
+ interrupts = <GIC_SHARED 12 IRQ_TYPE_LEVEL_HIGH>;
+ };
+ };
+
+...