[V2,3/6] dt-bindings: nvmem: convert U-Boot env vars to NVMEM layout
Commit Message
From: Rafał Miłecki <rafal@milecki.pl>
U-Boot environment variables can be found of various underlaying storage
entities. This binding should be defined as a layout on top on NVMEM
device not a NVMEM device itself.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
---
.../bindings/nvmem/layouts/nvmem-layout.yaml | 1 +
.../nvmem/{ => layouts}/u-boot,env.yaml | 29 ++++++++++---------
MAINTAINERS | 2 +-
3 files changed, 17 insertions(+), 15 deletions(-)
rename Documentation/devicetree/bindings/nvmem/{ => layouts}/u-boot,env.yaml (77%)
Comments
On Wed, 11 Jan 2023 08:30:59 +0100, Rafał Miłecki wrote:
> From: Rafał Miłecki <rafal@milecki.pl>
>
> U-Boot environment variables can be found of various underlaying storage
> entities. This binding should be defined as a layout on top on NVMEM
> device not a NVMEM device itself.
>
> Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
> ---
> .../bindings/nvmem/layouts/nvmem-layout.yaml | 1 +
> .../nvmem/{ => layouts}/u-boot,env.yaml | 29 ++++++++++---------
> MAINTAINERS | 2 +-
> 3 files changed, 17 insertions(+), 15 deletions(-)
> rename Documentation/devicetree/bindings/nvmem/{ => layouts}/u-boot,env.yaml (77%)
>
Reviewed-by: Rob Herring <robh@kernel.org>
@@ -20,6 +20,7 @@ description: |
oneOf:
- $ref: kontron,sl28-vpd.yaml
- $ref: onie,tlv-layout.yaml
+ - $ref: u-boot,env.yaml
properties:
compatible: true
similarity index 77%
rename from Documentation/devicetree/bindings/nvmem/u-boot,env.yaml
rename to Documentation/devicetree/bindings/nvmem/layouts/u-boot,env.yaml
@@ -1,10 +1,10 @@
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
-$id: http://devicetree.org/schemas/nvmem/u-boot,env.yaml#
+$id: http://devicetree.org/schemas/nvmem/layouts/u-boot,env.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
-title: U-Boot environment variables
+title: NVMEM layout of U-Boot environment variables
description: |
U-Boot uses environment variables to store device parameters and
@@ -14,16 +14,11 @@ description: |
Data is stored using U-Boot specific formats (variant specific header and NUL
separated key-value pairs).
- Environment data can be stored on various storage entities, e.g.:
+ Environment data can be stored on NVMEM devices of various underlaying storage
+ entities, e.g.:
1. Raw flash partition
2. UBI volume
- This binding allows marking storage device (as containing env data) and
- specifying used format.
-
- Right now only flash partition case is covered but it may be extended to e.g.
- UBI volumes in the future.
-
Variables can be defined as NVMEM device subnodes.
maintainers:
@@ -67,11 +62,14 @@ examples:
read-only;
};
- env: partition@40000 {
- compatible = "u-boot,env";
+ partition@40000 {
reg = <0x40000 0x10000>;
- mac: ethaddr {
+ nvmem-layout {
+ compatible = "u-boot,env";
+
+ mac: ethaddr {
+ };
};
};
};
@@ -87,9 +85,12 @@ examples:
label = "u-boot";
partition-u-boot-env {
- compatible = "brcm,env";
- ethaddr {
+ nvmem-layout {
+ compatible = "brcm,env";
+
+ ethaddr {
+ };
};
};
};
@@ -21136,7 +21136,7 @@ F: drivers/media/pci/tw686x/
U-BOOT ENVIRONMENT VARIABLES
M: Rafał Miłecki <rafal@milecki.pl>
S: Maintained
-F: Documentation/devicetree/bindings/nvmem/u-boot,env.yaml
+F: Documentation/devicetree/bindings/nvmem/layouts/u-boot,env.yaml
F: drivers/nvmem/u-boot-env.c
UACCE ACCELERATOR FRAMEWORK