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| author | Vincent Whitchurch <vincent.whitchurch@axis.com> | 2022-04-12 15:53:00 +0200 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2022-04-25 10:37:49 +0200 |
| commit | 4e969459604632d4096ff536f72552a9d365845e (patch) | |
| tree | 91a6d6a50c26bf47c47f76b8afb9126f8bd9547d /Documentation/devicetree/bindings/reserved-memory | |
| parent | 82e214f6c0f16827ea7a95b8f96c651a7a7f8ac1 (diff) | |
dt-bindings: reserved-memory: Support MTD/block device
Add bindings to allow MTD/block devices to be used in reserved-memory
regions using the "phram" (MTD in PHysical RAM) driver.
This allows things like partitioning to be specified via the existing
devicetree bindings.
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220412135302.1682890-3-vincent.whitchurch@axis.com
Diffstat (limited to 'Documentation/devicetree/bindings/reserved-memory')
| -rw-r--r-- | Documentation/devicetree/bindings/reserved-memory/phram.yaml | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/reserved-memory/phram.yaml b/Documentation/devicetree/bindings/reserved-memory/phram.yaml new file mode 100644 index 000000000000..6c4db28015f1 --- /dev/null +++ b/Documentation/devicetree/bindings/reserved-memory/phram.yaml @@ -0,0 +1,47 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/reserved-memory/phram.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MTD/block device in RAM + +description: | + Specifies that the reserved memory region can be used as an MTD or block + device. + + The "phram" node is named after the "MTD in PHysical RAM" driver which + provides an implementation of this functionality in Linux. + +maintainers: + - Vincent Whitchurch <vincent.whitchurch@axis.com> + +allOf: + - $ref: "reserved-memory.yaml" + - $ref: "/schemas/mtd/mtd.yaml" + +properties: + compatible: + const: phram + + reg: + description: region of memory that can be used as an MTD/block device + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + + phram: flash@12340000 { + compatible = "phram"; + label = "rootfs"; + reg = <0x12340000 0x00800000>; + }; + }; |