[PATCH 1/4] dt-bindings: fsl: scu: add ocotp binding

[Peng Fan <peng.fan@nxp.com>]

NXP i.MX8QXP is an ARMv8 SoC with a Cortex-M4 core inside as
system controller(SCU), the ocotp controller is being controlled
by the SCU, so Linux need use RPC to SCU for ocotp handling. This
patch adds binding doc for i.MX8 SCU OCOTP driver.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Aisheng Dong <aisheng.dong@nxp.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Anson Huang <anson.huang@nxp.com>
Cc: devicetree@vger.kernel.org
---
 Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
index 5d7dbabbb784..9cb7d52bdf26 100644
--- a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
+++ b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
@@ -100,6 +100,13 @@ ID in its "clocks" phandle cell.
 See the full list of clock IDs from:
 include/dt-bindings/clock/imx8qxp-clock.h
 
+OCOTP bindings based on SCU Message Protocol
+------------------------------------------------------------
+Required properties:
+- compatible:		Should be "fsl,imx8qxp-ocotp"
+- #address-cells:	Must be 1. Contains byte index
+- #size-cells:		Must be 1. Contains byte length
+
 Pinctrl bindings based on SCU Message Protocol
 ------------------------------------------------------------
 
@@ -177,6 +184,12 @@ firmware {
 			...
 		};
 
+		ocotp: imx8qx-ocotp {
+			#address-cells = <1>;
+			#size-cells = <1>;
+			compatible = "fsl,imx8qxp-ocotp";
+		};
+
 		pd: imx8qx-pd {
 			compatible = "fsl,imx8qxp-scu-pd", "fsl,scu-pd";
 			#power-domain-cells = <1>;
-- 
2.16.4