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bd912c991d
With the introduction of NVMEM layouts, new NVMEM content structures
should be defined as such. We should also try to convert / migrate
existing NVMEM content bindings to layouts.
This commit handles fixed NVMEM cells. So far they had to be defined
directly - as device subnodes. With this change it's allowed to put them
in the DT node named "nvmem-layout".
Having NVMEM cells in separated node is preferred as it draws a nice
line between NVMEM device and its content. It results in cleaner
bindings.
FWIW a very similar situation has happened to MTD devices and their
partitions: see commit 5d96ea42eb ("dt-bindings: mtd: Clarify all
partition subnodes").
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Message-ID: <20230611140330.154222-24-srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
51 lines
1020 B
YAML
51 lines
1020 B
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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$id: http://devicetree.org/schemas/nvmem/layouts/fixed-layout.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: NVMEM layout for fixed NVMEM cells
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description:
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Many NVMEM devices have hardcoded cells layout (offset and size of defined
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NVMEM content doesn't change).
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This binding allows defining such NVMEM layout with its cells. It can be used
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on top of any NVMEM device.
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maintainers:
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- Rafał Miłecki <rafal@milecki.pl>
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properties:
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compatible:
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const: fixed-layout
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"#address-cells":
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const: 1
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"#size-cells":
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const: 1
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patternProperties:
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"@[a-f0-9]+$":
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type: object
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$ref: fixed-cell.yaml
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unevaluatedProperties: false
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required:
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- compatible
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additionalProperties: false
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examples:
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- |
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nvmem-layout {
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compatible = "fixed-layout";
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#address-cells = <1>;
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#size-cells = <1>;
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calibration@4000 {
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reg = <0x4000 0x100>;
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};
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};
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