5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
28 lines
883 B
Plaintext
28 lines
883 B
Plaintext
Macronix NANDs Device Tree Bindings
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-----------------------------------
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Macronix NANDs support randomizer operation for scrambling user data,
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which can be enabled with a SET_FEATURE. The penalty when using the
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randomizer are subpage accesses prohibited and more time period needed
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for program operation, i.e., tPROG 300us to 340us (randomizer enabled).
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Enabling the randomizer is a one time persistent and non reversible
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operation.
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For more high-reliability concern, if subpage write is not available
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with hardware ECC and not enabled at UBI level, then enabling the
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randomizer is recommended by default by adding a new specific property
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in children nodes.
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Required NAND chip properties in children mode:
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- randomizer enable: should be "mxic,enable-randomizer-otp"
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Example:
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nand: nand-controller@unit-address {
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nand@0 {
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reg = <0>;
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mxic,enable-randomizer-otp;
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};
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};
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