dt-bindings: mtd: Add binding documentation for HyperFlash

Add DT binding documentation for HyperFlash devices.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

diff --git a/Documentation/devicetree/bindings/mtd/cypress,hyperflash.txt b/Documentation/devicetree/bindings/mtd/cypress,hyperflash.txt
new file mode 100644 (file)
index 0000000..ad42f4d
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/cypress,hyperflash.txt
@@ -0,0 +1,13 @@
+Bindings for HyperFlash NOR flash chips compliant with Cypress HyperBus
+specification and supports Cypress CFI specification 1.5 command set.
+
+Required properties:
+- compatible : "cypress,hyperflash", "cfi-flash" for HyperFlash NOR chips
+- reg : Address of flash's memory map
+
+Example:
+
+       flash@0 {
+               compatible = "cypress,hyperflash", "cfi-flash";
+               reg = <0x0 0x4000000>;
+       };