55 lines
1.2 KiB
YAML
55 lines
1.2 KiB
YAML
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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# Copyright 2019 BayLibre, SAS
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%YAML 1.2
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---
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$id: "http://devicetree.org/schemas/arm/amlogic/amlogic,meson-gx-ao-secure.yaml#"
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$schema: "http://devicetree.org/meta-schemas/core.yaml#"
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title: Amlogic Meson Firmware registers Interface
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maintainers:
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- Neil Armstrong <neil.armstrong@linaro.org>
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description: |
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The Meson SoCs have a register bank with status and data shared with the
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secure firmware.
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# We need a select here so we don't match all nodes with 'syscon'
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select:
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properties:
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compatible:
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contains:
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const: amlogic,meson-gx-ao-secure
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required:
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- compatible
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properties:
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compatible:
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items:
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- const: amlogic,meson-gx-ao-secure
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- const: syscon
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reg:
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maxItems: 1
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amlogic,has-chip-id:
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description: |
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A firmware register encodes the SoC type, package and revision
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information on the Meson GX SoCs. If present, the interface gives
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the current SoC version.
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type: boolean
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required:
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- compatible
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- reg
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additionalProperties: false
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examples:
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- |
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ao-secure@140 {
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compatible = "amlogic,meson-gx-ao-secure", "syscon";
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reg = <0x140 0x140>;
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amlogic,has-chip-id;
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};
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