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Just as unevaluatedProperties or additionalProperties are required at the top level of schemas, they should (and will) also be required for child node schemas. That ensures only documented properties are present for any node. Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Conor Dooley <conor.dooley@microchip.com> Acked-by: Rafał Miłecki <rafal@milecki.pl> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20231020105545.216052-6-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
104 lines
2.5 KiB
YAML
104 lines
2.5 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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$id: http://devicetree.org/schemas/nvmem/u-boot,env.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: U-Boot environment variables
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description: |
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U-Boot uses environment variables to store device parameters and
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configuration. They may be used for booting process, setup or keeping end user
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info.
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Data is stored using U-Boot specific formats (variant specific header and NUL
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separated key-value pairs).
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Environment data can be stored on various storage entities, e.g.:
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1. Raw flash partition
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2. UBI volume
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This binding allows marking storage device (as containing env data) and
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specifying used format.
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Right now only flash partition case is covered but it may be extended to e.g.
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UBI volumes in the future.
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Variables can be defined as NVMEM device subnodes.
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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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oneOf:
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- description: A standalone env data block
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const: u-boot,env
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- description: Two redundant blocks with active one flagged
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const: u-boot,env-redundant-bool
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- description: Two redundant blocks with active having higher counter
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const: u-boot,env-redundant-count
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- description: Broadcom's variant with custom header
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const: brcm,env
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reg:
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maxItems: 1
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bootcmd:
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type: object
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description: Command to use for automatic booting
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ethaddr:
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type: object
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description: Ethernet interfaces base MAC address.
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additionalProperties: false
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properties:
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"#nvmem-cell-cells":
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description: The first argument is a MAC address offset.
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const: 1
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additionalProperties: false
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examples:
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- |
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partitions {
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compatible = "fixed-partitions";
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#address-cells = <1>;
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#size-cells = <1>;
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partition@0 {
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reg = <0x0 0x40000>;
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label = "u-boot";
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read-only;
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};
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env: partition@40000 {
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compatible = "u-boot,env";
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reg = <0x40000 0x10000>;
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mac: ethaddr {
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#nvmem-cell-cells = <1>;
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};
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};
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};
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- |
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partitions {
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compatible = "fixed-partitions";
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#address-cells = <1>;
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#size-cells = <1>;
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partition@0 {
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reg = <0x0 0x100000>;
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compatible = "brcm,u-boot";
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label = "u-boot";
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partition-u-boot-env {
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compatible = "brcm,env";
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ethaddr {
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};
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};
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};
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};
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