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The driver will use a syscon regmap as backend and supports both 16 and 32 size value. The value will be stored in the CPU's endianness. Signed-off-by: Nandor Han <nandor.han@vaisala.com> Reviewed-by: Simon Glass <sjg@chromium.org>
25 lines
739 B
Plaintext
25 lines
739 B
Plaintext
Bootcount Configuration
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This is the implementation of the feature as described in
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https://www.denx.de/wiki/DULG/UBootBootCountLimit.
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Required Properties:
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- compatible: must be "u-boot,bootcount-syscon".
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- syscon: reference to the syscon device used.
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- reg: contains address and size of the register and the location and size of the bootcount value.
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The driver supports a 4 bytes register length and 2 and 4 bytes bootcount value length.
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- reg-names: must be "syscon_reg", "offset";
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Example:
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...
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syscon0: syscon@0 {
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compatible = "sandbox,syscon0";
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reg = <0x10 16>;
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};
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...
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bootcount@0 {
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compatible = "u-boot,bootcount-syscon";
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syscon = <&syscon0>;
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reg = <0x0 0x04>, <0x0 0x04>;
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reg-names = "syscon_reg", "offset";
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};
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