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d44870ff2a
NVMEM nodes can optionally include the bits property to specify the bit
position of the cell within a byte.
Extend patternProperties to allow adding the bit offset to the node
address to be able to distinguish nodes with the same address but
different bit positions, e.g.
trim@54,4 {
reg = <0x54 1>;
bits = <4 2>;
};
trim@54,0 {
reg = <0x54 1>;
bits = <0 4>;
};
Before the conversion to NVMEM layouts in commit bd912c991d
("dt-bindings: nvmem: layouts: add fixed-layout") this extension was
originally added with commit 4b2545dd19 ("dt-bindings: nvmem: Extend
patternProperties to optionally indicate bit position") to the now
deprecated layout.
Signed-off-by: Sven Peter <sven@kernel.org>
Reviewed-by: "Rob Herring (Arm)" <robh@kernel.org>
Signed-off-by: Srinivas Kandagatla <srini@kernel.org>
Link: https://lore.kernel.org/r/20250712181905.6738-3-srini@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
63 lines
1.3 KiB
YAML
63 lines
1.3 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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$id: http://devicetree.org/schemas/nvmem/layouts/fixed-layout.yaml#
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$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]+(,[0-7])?$":
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type: object
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$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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mac@100 {
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compatible = "mac-base";
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reg = <0x100 0x6>;
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#nvmem-cell-cells = <1>;
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};
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mac@110 {
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compatible = "mac-base";
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reg = <0x110 0x11>;
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#nvmem-cell-cells = <1>;
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};
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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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