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From:   Alice Guo <alice.guo@nxp.com>
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        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/4] dt-bindings: soc: imx8m: add DT Binding doc for soc unique ID
Date:   Thu,  5 Nov 2020 15:26:26 +0800
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Add DT Binding doc for the Unique ID of i.MX 8M series.

Signed-off-by: Alice Guo <alice.guo@nxp.com>
---
 .../devicetree/bindings/arm/fsl.yaml          | 33 +++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/fsl.yaml b/Documentation/devicetree/bindings/arm/fsl.yaml
index e4db0f9ed664..0419f078502b 100644
--- a/Documentation/devicetree/bindings/arm/fsl.yaml
+++ b/Documentation/devicetree/bindings/arm/fsl.yaml
@@ -901,6 +901,39 @@ properties:
               - fsl,s32v234-evb           # S32V234-EVB2 Customer Evaluation Board
           - const: fsl,s32v234

+  soc:
+    description:
+      i.MX8M Family SoC must provide a soc node in the root of the device tree,
+      representing the System-on-Chip since these test chips are rather complex.
+    type: object
+    properties:
+      compatible:
+        oneOf:
+          - items:
+              - const: fsl,imx8mm-soc
+              - const: simple-bus
+          - items:
+              - const: fsl,imx8mn-soc
+              - const: simple-bus
+          - items:
+              - const: fsl,imx8mp-soc
+              - const: simple-bus
+          - items:
+              - const: fsl,imx8mq-soc
+              - const: simple-bus
+
+      nvmem-cells:
+        maxItems: 1
+        description: Phandle to the SOC Unique ID provided by a nvmem node
+
+      nvmem-cells-names:
+        const: soc_unique_id
+
+    required:
+      - compatible
+      - nvmem-cells
+      - nvmem-cell-names
+
 additionalProperties: true

 ...
--
2.17.1