1 files changed, 27 insertions, 0 deletions
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;
+		};
+	};