49 lines
1.2 KiB
YAML
49 lines
1.2 KiB
YAML
# 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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$id: http://devicetree.org/schemas/pmem-region.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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maintainers:
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- Oliver O'Halloran <oohall@gmail.com>
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title: Persistent Memory Regions
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description: |
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Persistent memory refers to a class of memory devices that are:
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a) Usable as main system memory (i.e. cacheable), and
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b) Retain their contents across power failure.
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Given b) it is best to think of persistent memory as a kind of memory mapped
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storage device. To ensure data integrity the operating system needs to manage
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persistent regions separately to the normal memory pool. To aid with that this
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binding provides a standardised interface for discovering where persistent
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memory regions exist inside the physical address space.
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properties:
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compatible:
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const: pmem-region
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reg:
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maxItems: 1
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volatile:
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description:
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Indicates the region is volatile (non-persistent) and the OS can skip
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cache flushes for writes
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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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pmem@5000 {
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compatible = "pmem-region";
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reg = <0x00005000 0x00001000>;
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};
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