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# 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 bindings
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>;
};
...
|
