On Wed, 03 Jun 2020 19:57:45 +0200, Miquel Raynal wrote:

This property is needed to precisely point to the hardware ECC engine
to use when there are several of them available. Here, hardware also
refers to the on-die possibility.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 .../devicetree/bindings/mtd/nand-controller.yaml     | 12 ++++++++++++
 1 file changed, 12 insertions(+)

My bot found errors running 'make dt_binding_check' on your patch:

Documentation/devicetree/bindings/mtd/nand-controller.yaml:  while scanning for the next token
found character that cannot start any token
  in "<unicode string>", line 62, column 1
Documentation/devicetree/bindings/Makefile:12: recipe for target 'Documentation/devicetree/bindings/mtd/nand-controller.example.dts' failed
make[1]: *** [Documentation/devicetree/bindings/mtd/nand-controller.example.dts] Error 1
make[1]: *** Waiting for unfinished jobs....
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/nand-controller.yaml: ignoring, error parsing file
warning: no schema found in file: ./Documentation/devicetree/bindings/mtd/nand-controller.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/nand-controller.yaml: ignoring, error parsing file
warning: no schema found in file: ./Documentation/devicetree/bindings/mtd/nand-controller.yaml
Makefile:1300: recipe for target 'dt_binding_check' failed
make: *** [dt_binding_check] Error 2

See https://patchwork.ozlabs.org/patch/1303116

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure dt-schema is up to date:

pip3 install git+https://github.com/devicetree-org/dt-schema.git@master --upgrade

Please check and re-submit.