[PATCH 1/2] dt-bindings: mtd: gpmi-nand: specify fsl, use-minimum-ecc behavior
stefan at agner.ch
Tue Feb 6 09:40:20 PST 2018
The dt property fsl,use-minimum-ecc requires a NAND chip to
provide a ECC strength/step size, otherwise the driver fails
to probe. This is by design to avoid that the driver uses a
fallback and later changes ECC parameters due to additionion
of a NAND chip driver. Document the current behavior.
Signed-off-by: Stefan Agner <stefan at agner.ch>
Documentation/devicetree/bindings/mtd/gpmi-nand.txt | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/mtd/gpmi-nand.txt b/Documentation/devicetree/bindings/mtd/gpmi-nand.txt
index b289ef3c1b7e..eb2d9919d063 100644
@@ -34,9 +34,8 @@ Optional properties:
automatically discoverable for some flash
(e.g., according to the ONFI standard).
However, note that if this strength is not
- discoverable or this property is not enabled,
- the software may chooses an implementation-defined
- ECC scheme.
+ discoverable the driver will fail probing with
+ an error.
- fsl,no-blockmark-swap: Don't swap the bad block marker from the OOB
area with the byte in the data area but rely on the
flash based BBT for identifying bad blocks.
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