On Thu, Feb 17, 2022 at 6:09 AM Rafał Miłecki zajec5@gmail.com wrote:
From: Rafał Miłecki rafal@milecki.pl
This is RFC and request for a help & discussion.
While reviewing patch for U-Boot env binding it has been mentioned that:
/Processing/ whole DT in U-Boot may be too much work Handling flash devices, partitions, their formats & NVMEM may require too many U-Boot drivers involved.
It'd be nice to have env data storage devices pointed in chosen
I wrote this hacky PATCH to give a rough idea how it could look like.
Please review this and let me know:
- If solution with chosen + phandles is acceptable
- How to properly name .yaml file
- Where it put it
Signed-off-by: Rafał Miłecki rafal@milecki.pl
.../devicetree/bindings/u-boot,chosen.yaml | 39 +++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 Documentation/devicetree/bindings/u-boot,chosen.yaml
diff --git a/Documentation/devicetree/bindings/u-boot,chosen.yaml b/Documentation/devicetree/bindings/u-boot,chosen.yaml new file mode 100644 index 000000000000..8369da91193d --- /dev/null +++ b/Documentation/devicetree/bindings/u-boot,chosen.yaml @@ -0,0 +1,39 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/u-boot,chosen.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml#
+title: U-Boot setup
+maintainers:
- Rafał Miłecki rafal@milecki.pl
+properties:
- u-boot,env:
- $ref: /schemas/types.yaml#/definitions/phandle-array
- description: |
A list of storage volumes containing U-Boot environment data.Env data can be stored on various kinds of storage devices, e.g.:1. Raw flash partition2. UBI volume+additionalProperties: true
+examples:
- |
- chosen {
u-boot,env = <&env>;
You should look at the u-boot config support:
https://github.com/devicetree-org/dt-schema/commit/0986f729eff0f40a66e85ab9d...