[RFC/PATCH 1/1] mtd: nand: Add a devicetree binding for ECC strength and ECC step size

[Ezequiel Garcia]

Some flashes can only be properly accessed when the ECC mode is
specified, and a way to describe such mode is required.

Such ECC mode is completely driver-specific so instead of having one binding
per compatible-string, let's add generic ECC strength and ECC step size.
Driver's can choose the appropriate ECC mode, based on this specification.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia at free-electrons.com>
---
 Documentation/devicetree/bindings/mtd/nand.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/mtd/nand.txt b/Documentation/devicetree/bindings/mtd/nand.txt
index 03855c8..683a310 100644
--- a/Documentation/devicetree/bindings/mtd/nand.txt
+++ b/Documentation/devicetree/bindings/mtd/nand.txt
@@ -3,5 +3,9 @@
 - nand-ecc-mode : String, operation mode of the NAND ecc mode.
   Supported values are: "none", "soft", "hw", "hw_syndrome", "hw_oob_first",
   "soft_bch".
+- nand-ecc-strength : integer ECC required strength.
+- nand-ecc-size : integer step size associated to the ECC strength.
+  The exact meaning of the ECC strength and ECC size parameters is completely
+  driver-specific.
 - nand-bus-width : 8 or 16 bus width if not present 8
 - nand-on-flash-bbt: boolean to enable on flash bbt option if not present false
-- 
1.8.1.5