[PATCH 1/3] nvmem: Add i.MX6 OCOTP device tree binding documentation

This patch documents the i.MX6 OCOTP device tree binding.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
---
  .../devicetree/bindings/nvmem/imx-ocotp.txt          | 20 ++++++++++++++++++++
  1 file changed, 20 insertions(+)
  create mode 100644 Documentation/devicetree/bindings/nvmem/imx-ocotp.txt

diff --git a/Documentation/devicetree/bindings/nvmem/imx-ocotp.txt b/Documentation/devicetree/bindings/nvmem/imx-ocotp.txt
new file mode 100644
index 0000000..7d9a3fc
--- /dev/null
+++ b/Documentation/devicetree/bindings/nvmem/imx-ocotp.txt

@@ -0,0 +1,20 @@
+Freescale i.MX6 On-Chip OTP Controller (OCOTP) device tree bindings
+
+This binding represents the on-chip eFuse OTP controller found on
+i.MX6Q/D, i.MX6DL/S, i.MX6SL, and i.MX6SX SoCs.
+
+Required properties:
+- compatible: should be one of
+	"fsl,imx6q-ocotp" (i.MX6Q/D/DL/S),
+        "fsl,imx6sl-ocotp" (i.MX6SL), or
+	"fsl,imx6sx-ocotp" (i.MX6SX), followed by "syscon".
+- reg: Should contain the register base and length.
+- clocks: Should contain a phandle pointing to the gated peripheral clock.
+
+Example:
+
+	ocotp: ocotp at 021bc000 {
+		compatible = "fsl,imx6q-ocotp", "syscon";