| Message ID | 20231218133722.16150-1-zajec5@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/4] dt-bindings: nvmem: layouts: add U-Boot environment variables layout | expand |
On Mon, 18 Dec 2023 14:37:19 +0100, Rafał Miłecki wrote: > From: Rafał Miłecki <rafal@milecki.pl> > > U-Boot env data is a way of storing firmware variables. It's a format > that can be used of top of various storage devices. Its binding should > be an NVMEM layout instead of a standalone device. > > This patch adds layout binding which allows using it on top of MTD NVMEM > device as well as any other. At the same time it deprecates the old > combined binding. > > Signed-off-by: Rafał Miłecki <rafal@milecki.pl> > --- > .../bindings/nvmem/layouts/u-boot,env.yaml | 55 +++++++++++++++++++ > .../devicetree/bindings/nvmem/u-boot,env.yaml | 6 ++ > 2 files changed, 61 insertions(+) > create mode 100644 Documentation/devicetree/bindings/nvmem/layouts/u-boot,env.yaml > My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check' on your patch (DT_CHECKER_FLAGS is new in v5.13): yamllint warnings/errors: dtschema/dtc warnings/errors: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/nvmem/u-boot,env.example.dtb: partition@40000: 'ethaddr', 'reg' do not match any of the regexes: 'pinctrl-[0-9]+' from schema $id: http://devicetree.org/schemas/nvmem/layouts/u-boot,env.yaml# /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/nvmem/u-boot,env.example.dtb: partition-u-boot-env: 'ethaddr' does not match any of the regexes: 'pinctrl-[0-9]+' from schema $id: http://devicetree.org/schemas/nvmem/layouts/u-boot,env.yaml# doc reference errors (make refcheckdocs): See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20231218133722.16150-1-zajec5@gmail.com The base for the series is generally the latest rc1. A different dependency should be noted in *this* patch. If you already ran 'make dt_binding_check' and didn't see the above error(s), then make sure 'yamllint' is installed and dt-schema is up to date: pip3 install dtschema --upgrade Please check and re-submit after running the above command yourself. Note that DT_SCHEMA_FILES can be set to your schema file to speed up checking your schema. However, it must be unset to test all examples with your schema.
On 18.12.2023 15:48, Rob Herring wrote: > > On Mon, 18 Dec 2023 14:37:19 +0100, Rafał Miłecki wrote: >> From: Rafał Miłecki <rafal@milecki.pl> >> >> U-Boot env data is a way of storing firmware variables. It's a format >> that can be used of top of various storage devices. Its binding should >> be an NVMEM layout instead of a standalone device. >> >> This patch adds layout binding which allows using it on top of MTD NVMEM >> device as well as any other. At the same time it deprecates the old >> combined binding. >> >> Signed-off-by: Rafał Miłecki <rafal@milecki.pl> >> --- >> .../bindings/nvmem/layouts/u-boot,env.yaml | 55 +++++++++++++++++++ >> .../devicetree/bindings/nvmem/u-boot,env.yaml | 6 ++ >> 2 files changed, 61 insertions(+) >> create mode 100644 Documentation/devicetree/bindings/nvmem/layouts/u-boot,env.yaml >> > > My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check' > on your patch (DT_CHECKER_FLAGS is new in v5.13): > > yamllint warnings/errors: > > dtschema/dtc warnings/errors: > /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/nvmem/u-boot,env.example.dtb: partition@40000: 'ethaddr', 'reg' do not match any of the regexes: 'pinctrl-[0-9]+' > from schema $id: http://devicetree.org/schemas/nvmem/layouts/u-boot,env.yaml# > /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/nvmem/u-boot,env.example.dtb: partition-u-boot-env: 'ethaddr' does not match any of the regexes: 'pinctrl-[0-9]+' > from schema $id: http://devicetree.org/schemas/nvmem/layouts/u-boot,env.yaml# I checked my binding independently using using dt_binding_check and missed that. I'm not aware of any way of limiting possibility of applying binding to specific cases (like "nvmem-layout" node) so I guess I'll just have to avoid duplicated "u-boot,env" compatible string. > doc reference errors (make refcheckdocs): > > See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20231218133722.16150-1-zajec5@gmail.com > > The base for the series is generally the latest rc1. A different dependency > should be noted in *this* patch. > > If you already ran 'make dt_binding_check' and didn't see the above > error(s), then make sure 'yamllint' is installed and dt-schema is up to > date: > > pip3 install dtschema --upgrade > > Please check and re-submit after running the above command yourself. Note > that DT_SCHEMA_FILES can be set to your schema file to speed up checking > your schema. However, it must be unset to test all examples with your schema. >
diff --git a/Documentation/devicetree/bindings/nvmem/layouts/u-boot,env.yaml b/Documentation/devicetree/bindings/nvmem/layouts/u-boot,env.yaml new file mode 100644 index 000000000000..3a7ec02b3535 --- /dev/null +++ b/Documentation/devicetree/bindings/nvmem/layouts/u-boot,env.yaml @@ -0,0 +1,55 @@ +# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/nvmem/layouts/u-boot,env.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NVMEM layout of U-Boot environment variables + +maintainers: + - Rafał Miłecki <rafal@milecki.pl> + +description: + U-Boot uses environment variables to store device parameters and + configuration. They may be used for booting process, setup or keeping end user + info. + + Data is stored using U-Boot specific formats (variant specific header and NUL + separated key-value pairs). + +properties: + compatible: + oneOf: + - description: A standalone env data block + const: u-boot,env + - description: Two redundant blocks with active one flagged + const: u-boot,env-redundant-bool + - description: Two redundant blocks with active having higher counter + const: u-boot,env-redundant-count + - description: Broadcom's variant with custom header + const: brcm,env + +additionalProperties: false + +examples: + - | + partitions { + compatible = "fixed-partitions"; + #address-cells = <1>; + #size-cells = <1>; + + partition@0 { + reg = <0x0 0x40000>; + label = "u-boot"; + read-only; + }; + + partition@40000 { + reg = <0x40000 0x10000>; + label = "u-boot-env"; + + nvmem-layout { + compatible = "u-boot,env"; + }; + }; + }; diff --git a/Documentation/devicetree/bindings/nvmem/u-boot,env.yaml b/Documentation/devicetree/bindings/nvmem/u-boot,env.yaml index 68214b96f5c9..fd95e611322d 100644 --- a/Documentation/devicetree/bindings/nvmem/u-boot,env.yaml +++ b/Documentation/devicetree/bindings/nvmem/u-boot,env.yaml @@ -26,9 +26,15 @@ description: | Variables can be defined as NVMEM device subnodes. + Introduction of NVMEM layouts exposed a limitation of this binding design. + Description of NVMEM data content should be separated from NVMEM devices. + Since the introduction of U-Boot env data layout this binding is deprecated. + maintainers: - Rafał Miłecki <rafal@milecki.pl> +deprecated: true + properties: compatible: oneOf: