[PATCH v2 1/2] mtd: nand: dt binding documentation for digicolor NFC

The CX92755 SoC is one of Conexant Digicolor series of SoCs. This devicetree
binding document describes the NAND flash controller the is shared by some SoCs
in the Digicolor series.

Not all of the properties are currently actually used by the driver.
Specifically, the driver doesn't make use of interrupts. This may change in the
future.

Also worth noting that the only supported ECC mode is "hw_syndrome". In the
future the driver may add support for additional modes.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
---
 .../devicetree/bindings/mtd/digicolor-nand.txt     | 71 ++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mtd/digicolor-nand.txt

diff --git a/Documentation/devicetree/bindings/mtd/digicolor-nand.txt b/Documentation/devicetree/bindings/mtd/digicolor-nand.txt
new file mode 100644
index 000000000000..60e2d9085b7a
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/digicolor-nand.txt

@@ -0,0 +1,71 @@
+Conexant Digicolor NAND Flash Controller (NFC)
+
+Required properties:
+- compatible : "cnxt,cx92755-nfc".
+- reg : shall contain registers location and length for data and reg.
+- interrupts : shall define the nand controller interrupt.
+- #address-cells: shall be set to 1. Encode the nand CS.
+- #size-cells : shall be set to 0.
+- clocks : shall reference nand controller clocks.
+
+Optional children nodes:
+Children nodes represent the available nand chips.
+
+Required children properties:
+- nand-ecc-mode : must be "hw_syndrome".