dt-bindings: hwinfo: ti,k3-socinfo: Add nvmem-cells support

Add optional nvmem-cells and nvmem-cell-names properties to support
reading silicon revision information from alternate location using
NVMEM providers. This is used on AM62P to read GP_SW1 register for
accurate silicon revision detection.

Signed-off-by: Judith Mendez <jm@ti.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260209172330.53623-2-jm@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>

diff --git a/Documentation/devicetree/bindings/hwinfo/ti,k3-socinfo.yaml b/Documentation/devicetree/bindings/hwinfo/ti,k3-socinfo.yaml
index dada28b47ea079ea70ff9bc13822bf263fd309b4..2900224aac743f70b4da0d5e7cb867df091bbf02 100644 (file)
--- a/Documentation/devicetree/bindings/hwinfo/ti,k3-socinfo.yaml
+++ b/Documentation/devicetree/bindings/hwinfo/ti,k3-socinfo.yaml
@@ -15,6 +15,9 @@ description: |
   represented by CTRLMMR_xxx_JTAGID register which contains information about
   SoC id and revision.
 
+  On some SoCs like AM62P, the silicon revision is determined by reading
+  alternative registers via NVMEM cells.
+
 properties:
   $nodename:
     pattern: "^chipid@[0-9a-f]+$"
@@ -26,6 +29,14 @@ properties:
   reg:
     maxItems: 1
 
+  nvmem-cells:
+    items:
+      - description: Alternate silicon revision register
+
+  nvmem-cell-names:
+    items:
+      - const: gpsw1
+
 required:
   - compatible
   - reg