Add DT Binding doc for the Unique ID of i.MX 8M series.
v2: remove the subject prefix "LF-2571-1"
v3: put it into Documentation/devicetree/bindings/arm/fsl.yaml
modify the description of nvmem-cells
use "make ARCH=arm64 dtbs_check" to test it and fix errors
v4: use allOf to limit new version DTS files for i.MX8M to include
"fsl,imx8mm/n/p/q-soc", nvmem-cells and nvmem-cells-names
Signed-off-by: Alice Guo <alice.guo@xxxxxxx>
---
.../devicetree/bindings/arm/fsl.yaml | 51 +++++++++++++++++++
1 file changed, 51 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/fsl.yaml b/Documentation/devicetree/bindings/arm/fsl.yaml
index 67980dcef66d..d8048323a290 100644
--- a/Documentation/devicetree/bindings/arm/fsl.yaml
+++ b/Documentation/devicetree/bindings/arm/fsl.yaml
@@ -918,6 +918,57 @@ properties:
- fsl,s32v234-evb # S32V234-EVB2 Customer Evaluation Board
- const: fsl,s32v234
+ soc:
+ type: object
+ properties:
+ compatible:
+ oneOf:
+ - description: new version compatible for i.MX8M SoCs
+ items:
+ - enum:
+ - fsl,imx8mm-soc
+ - fsl,imx8mn-soc
+ - fsl,imx8mp-soc
+ - fsl,imx8mq-soc
+ - const: simple-bus
+
+ - description: old version compatible for i.MX8M SoCs
+ items:
+ - 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
+
+ allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - fsl,imx8mm
+ - fsl,imx8mn
+ - fsl,imx8mp
+ - fsl,imx8mq
+
+ then:
+ properties:
+ compatible:
+ items:
+ - enum:
+ - fsl,imx8mm-soc
+ - fsl,imx8mn-soc
+ - fsl,imx8mp-soc
+ - fsl,imx8mq-soc
+ - const: simple-bus
+
+ required:
+ - nvmem-cells
+ - nvmem-cells-names
+
additionalProperties: true
...
--
2.17.1
