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