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author | Sven Peter <sven@svenpeter.dev> | 2022-04-29 19:26:49 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-05-09 16:44:21 +0300 |
commit | 7177042bdd1605b6c8d6b5c65a72f3e389690eaf (patch) | |
tree | 0690d82e89422fc06d310bbfdd92682269891188 /Documentation | |
parent | 8c240bd68ba089c189194b0f78968f3bbf09db97 (diff) | |
download | linux-7177042bdd1605b6c8d6b5c65a72f3e389690eaf.tar.xz |
dt-bindings: nvmem: Add apple,efuses
Apple SoCs come with eFuses used to store factory-programmed data
such as calibration settings for the PCIe and Type-C PHY.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20220429162701.2222-5-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/devicetree/bindings/nvmem/apple,efuses.yaml | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/nvmem/apple,efuses.yaml b/Documentation/devicetree/bindings/nvmem/apple,efuses.yaml new file mode 100644 index 000000000000..5ec8f2bdb3a5 --- /dev/null +++ b/Documentation/devicetree/bindings/nvmem/apple,efuses.yaml @@ -0,0 +1,50 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/nvmem/apple,efuses.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Apple SoC eFuse-based NVMEM + +description: | + Apple SoCs such as the M1 contain factory-programmed eFuses used to e.g. store + calibration data for the PCIe and the Type-C PHY or unique chip identifiers + such as the ECID. + +maintainers: + - Sven Peter <sven@svenpeter.dev> + +allOf: + - $ref: "nvmem.yaml#" + +properties: + compatible: + items: + - enum: + - apple,t8103-efuses + - apple,t6000-efuses + - const: apple,efuses + + reg: + maxItems: 1 + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + efuse@3d2bc000 { + compatible = "apple,t8103-efuses", "apple,efuses"; + reg = <0x3d2bc000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + + ecid: efuse@500 { + reg = <0x500 0x8>; + }; + }; + +... |