[RFC PATCH v2 07/14] of: mtd: add documentation for the ONFI NAND timing mode property

[Boris BREZILLON]

Add documentation for the ONFI NAND timing mode property.

Signed-off-by: Boris BREZILLON <b.brezillon.dev@xxxxxxxxx>
---
 Documentation/devicetree/bindings/mtd/nand.txt |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/mtd/nand.txt b/Documentation/devicetree/bindings/mtd/nand.txt
index 0c962296..75e46f3 100644
--- a/Documentation/devicetree/bindings/mtd/nand.txt
+++ b/Documentation/devicetree/bindings/mtd/nand.txt
@@ -8,3 +8,8 @@
   E.g. : nand-ecc-level = <4 512>; /* 4 bits / 512 bytes */
 - 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
+- onfi,nand-timing-mode: an integer encoding the ONFI timing mode of the NAND
+  chip. This is only used when the chip does not support the ONFI standard.
+  Choose the closest mode fulfilling the NAND chip timings.
+  For a full description of the different timing modes see this document:
+  www.onfi.org/~/media/ONFI/specs/onfi_3_1_spec.pdfâ
-- 
1.7.9.5

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