Hi Mason, Mason Yang <masonccyang@xxxxxxxxxxx> wrote on Mon, 17 Feb 2020 14:56:40 +0800: > Document the bindings used by the Macronix NAND device. > > Signed-off-by: Mason Yang <masonccyang@xxxxxxxxxxx> > Reviewed-by: Rob Herring <robh@xxxxxxxxxx> > --- > .../devicetree/bindings/mtd/nand-macronix.txt | 28 ++++++++++++++++++++++ > 1 file changed, 28 insertions(+) > create mode 100644 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 0000000..1d7a895 > --- /dev/null > +++ b/Documentation/devicetree/bindings/mtd/nand-macronix.txt > @@ -0,0 +1,28 @@ > +Macronix NANDs Device Tree Bindings > +----------------------------------- > + > +Macronix NANDs support randomizer operation for user data scrambled, > +which can be enabled with a SET_FEATURE. The penalty of randomizer are > +subpage accesses prohibited and more time period is needed in program > +operation, i.e., tPROG 300us to 340us(randomizer enabled). > +Randomizer enabled is a one time persistent and non reversible operatoin. > + > +For more high-reliability concern, if subpage write not available with > +hardware ECC and filesystem and then to enable randomizer is recommended > +by default. > + > +By adding a new specific property in children nodes to enable > +randomizer function. I also reworded slightly this text when applying. Thanks, Miquèl
