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