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| author | Rafał Miłecki <rafal@milecki.pl> | 2022-07-11 17:30:40 +0200 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2022-09-19 18:13:05 +0200 |
| commit | 27bfb201b2c03c8a033b60e5ad80cbf3aaa52b94 (patch) | |
| tree | 3f5c33b6f8cd12b64535a400b7d5c089a26ad120 | |
| parent | 568035b01cfb107af8d2e4bd2fb9aea22cf5b868 (diff) | |
| download | linux-stable-27bfb201b2c03c8a033b60e5ad80cbf3aaa52b94.tar.gz linux-stable-27bfb201b2c03c8a033b60e5ad80cbf3aaa52b94.tar.bz2 linux-stable-27bfb201b2c03c8a033b60e5ad80cbf3aaa52b94.zip | |
dt-bindings: mtd: partitions: add binding for U-Boot bootloader
Right now there is no (known) real reason for a custom binding for
standard U-Boot partitions. Broadcom's U-Boot however requires extra
handling - looking for environment variables subblocks. This commit adds
Broadcom specific binding.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220711153041.6036-1-zajec5@gmail.com
| -rw-r--r-- | Documentation/devicetree/bindings/mtd/partitions/u-boot.yaml | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mtd/partitions/u-boot.yaml b/Documentation/devicetree/bindings/mtd/partitions/u-boot.yaml new file mode 100644 index 000000000000..8a88e7d16524 --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/partitions/u-boot.yaml @@ -0,0 +1,49 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mtd/partitions/u-boot.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: U-Boot bootloader partition + +description: | + U-Boot is a bootlodaer commonly used in embedded devices. It's almost always + located on some kind of flash device. + + Device configuration is stored as a set of environment variables that are + located in a (usually standalone) block of data. + +maintainers: + - Rafał Miłecki <rafal@milecki.pl> + +allOf: + - $ref: partition.yaml# + +properties: + compatible: + oneOf: + - const: brcm,u-boot + description: | + Broadcom stores environment variables inside a U-Boot partition. They + can be identified by a custom header with magic value. + +unevaluatedProperties: false + +examples: + - | + partitions { + compatible = "fixed-partitions"; + #address-cells = <1>; + #size-cells = <1>; + + partition@0 { + compatible = "brcm,u-boot"; + reg = <0x0 0x100000>; + label = "u-boot"; + }; + + partition@100000 { + reg = <0x100000 0x1ff00000>; + label = "firmware"; + }; + }; |