Commit 4e969459 authored by Vincent Whitchurch's avatar Vincent Whitchurch Committed by Miquel Raynal
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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: default avatarVincent Whitchurch <vincent.whitchurch@axis.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220412135302.1682890-3-vincent.whitchurch@axis.com
parent 82e214f6

Documentation/devicetree/bindings/reserved-memory/phram.yaml

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# 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>;

        };

    };