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-rw-r--r--Documentation/devicetree/bindings/nvmem/imx-ocotp.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/nvmem/imx-ocotp.txt b/Documentation/devicetree/bindings/nvmem/imx-ocotp.txt
index bbde2e43ef86..70d791b03ea1 100644
--- a/Documentation/devicetree/bindings/nvmem/imx-ocotp.txt
+++ b/Documentation/devicetree/bindings/nvmem/imx-ocotp.txt
@@ -14,10 +14,14 @@ Required properties:
- reg: Should contain the register base and length.
- clocks: Should contain a phandle pointing to the gated peripheral clock.
+Optional properties:
+- read-only: disable write access
+
Example:
ocotp: ocotp@021bc000 {
compatible = "fsl,imx6q-ocotp", "syscon";
reg = <0x021bc000 0x4000>;
clocks = <&clks IMX6QDL_CLK_IIM>;
+ read-only;
};

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