zephyr/dts/bindings/disk/zephyr,ram-disk.yaml
Johann Fischer f67dd39bb2 drivers: ramdisk: use devicetree to instantiate RAM disk
Rework RAM disk driver to be configured using devicetree and
support multiple instances.

This patch also removes a copy of the RAM disk driver,
tests/subsys/fs/fat_fs_dual_drive/src/disk_access_test_drv.c,
that was there for testing multiple disk drivers support.

Bonus: one SYS_INIT() less and a memory region can be exported to the
host.

Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>
2023-09-18 17:36:50 +02:00

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YAML

# Copyright (c) 2023 Nordic Semiconductor ASA
# SPDX-License-Identifier: Apache-2.0
description: RAM disk
compatible: "zephyr,ram-disk"
include: ["base.yaml", "memory-region.yaml"]
properties:
disk-name:
type: string
required: true
description: |
Disk name.
sector-size:
type: int
required: true
enum: [512, 1024, 2048, 4096, 8192, 16384, 32768, 65536]
description: |
Disk sector size in bytes.
sector-count:
type: int
required: true
description: |
Number of sectors.
ram-region:
type: phandle
description: |
Optional phandle to the memory region to be used as a RAM disk,
if not used a local buffer is defined for each disk instance.
Use it with caution as it makes memory contents easily accessible.