49 lines
1.2 KiB
YAML
49 lines
1.2 KiB
YAML
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# SPDX-License-Identifier: GPL-2.0-only
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/rng/timeriomem_rng.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: TimerIO Random Number Generator
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maintainers:
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- Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
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properties:
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compatible:
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const: timeriomem_rng
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period:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: wait time in microseconds to use between samples
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quality:
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$ref: /schemas/types.yaml#/definitions/uint32
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default: 0
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description:
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Estimated number of bits of true entropy per 1024 bits read from the rng.
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Defaults to zero which causes the kernel's default quality to be used
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instead. Note that the default quality is usually zero which disables
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using this rng to automatically fill the kernel's entropy pool.
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reg:
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maxItems: 1
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description:
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Base address to sample from. Currently 'reg' must be at least four bytes
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wide and 32-bit aligned.
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required:
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- compatible
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- period
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- reg
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additionalProperties: false
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examples:
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- |
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rng@44 {
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compatible = "timeriomem_rng";
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reg = <0x44 0x04>;
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period = <1000000>;
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};
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