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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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62b467c65a
On Mobileye EyeQ5, the bootloader will put MAC addresses into memory. Declare that as reserved memory to be used by the kernel, exposing nvmem cells. That region has a 12-byte header and a 4-byte trailing CRC. Acked-by: Rob Herring (Arm) <robh@kernel.org> Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20241230143035.265518-3-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
55 lines
1.2 KiB
YAML
55 lines
1.2 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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$id: http://devicetree.org/schemas/nvmem/rmem.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Reserved Memory Based nvmem Device
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maintainers:
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- Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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allOf:
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- $ref: nvmem.yaml#
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properties:
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compatible:
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items:
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- enum:
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- mobileye,eyeq5-bootloader-config
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- raspberrypi,bootloader-config
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- raspberrypi,bootloader-public-key
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- const: nvmem-rmem
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reg:
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maxItems: 1
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no-map:
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$ref: /schemas/types.yaml#/definitions/flag
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description:
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Avoid creating a virtual mapping of the region as part of the OS'
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standard mapping of system memory.
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required:
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- compatible
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- no-map
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unevaluatedProperties: false
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examples:
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- |
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reserved-memory {
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#address-cells = <1>;
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#size-cells = <1>;
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blconfig: nvram@10000000 {
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compatible = "raspberrypi,bootloader-config", "nvmem-rmem";
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#address-cells = <1>;
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#size-cells = <1>;
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reg = <0x10000000 0x1000>;
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no-map;
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};
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};
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...
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