# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2 --- $id: "http://devicetree.org/schemas/remoteproc/amlogic,meson-mx-ao-arc.yaml#" $schema: "http://devicetree.org/meta-schemas/core.yaml#" title: Amlogic Meson AO ARC Remote Processor description: Amlogic Meson6, Meson8, Meson8b and Meson8m2 SoCs embed an ARC core controller for always-on operations, typically used for managing system suspend. Meson6 and older use a ARC core based on the ARCv1 ISA, while Meson8, Meson8b and Meson8m2 use an ARC EM4 (ARCv2 ISA) core. maintainers: - Martin Blumenstingl <martin.blumenstingl@googlemail.com> properties: compatible: items: - enum: - amlogic,meson8-ao-arc - amlogic,meson8b-ao-arc - const: amlogic,meson-mx-ao-arc firmware-name: $ref: /schemas/types.yaml#/definitions/string description: The name of the firmware which should be loaded for this remote processor. reg: description: Address ranges of the remap and CPU control addresses for the remote processor. minItems: 2 reg-names: items: - const: remap - const: cpu resets: minItems: 1 clocks: minItems: 1 sram: $ref: /schemas/types.yaml#/definitions/phandle description: phandles to a reserved SRAM region which is used as the memory of the ARC core. The region should be defined as child nodes of the AHB SRAM node as per the generic bindings in Documentation/devicetree/bindings/sram/sram.yaml amlogic,secbus2: $ref: /schemas/types.yaml#/definitions/phandle description: A phandle to the SECBUS2 region which contains some configuration bits of this remote processor required: - compatible - reg - reg-names - resets - clocks - sram - amlogic,secbus2 additionalProperties: false examples: - | remoteproc@1c { compatible= "amlogic,meson8-ao-arc", "amlogic,meson-mx-ao-arc"; reg = <0x1c 0x8>, <0x38 0x8>; reg-names = "remap", "cpu"; resets = <&media_cpu_reset>; clocks = <&media_cpu_clock>; sram = <&ahb_sram_ao_arc>; amlogic,secbus2 = <&secbus2>; }; ...