From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- .../devicetree/bindings/mtd/nand-macronix.txt | 27 ++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 Documentation/devicetree/bindings/mtd/nand-macronix.txt (limited to 'Documentation/devicetree/bindings/mtd/nand-macronix.txt') diff --git a/Documentation/devicetree/bindings/mtd/nand-macronix.txt b/Documentation/devicetree/bindings/mtd/nand-macronix.txt new file mode 100644 index 000000000..ffab28a2c --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/nand-macronix.txt @@ -0,0 +1,27 @@ +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; + }; + }; -- cgit v1.2.3