| 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; |
| }; |
| }; |
