[PATCH v4 1/5] dt-bindings: interconnect: Update property for icc-rpm path tag

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To support path tag in icc-rpm driver, the "#interconnect-cells"
property is updated as enumerate values: 1 or 2.  Setting to 1 means
it is compatible with old DT binding that interconnect path only
contains node id; if set to 2 for "#interconnect-cells" property, then
the second specifier is used as a tag (e.g. vote for which buckets).

Signed-off-by: Leo Yan <leo.yan@xxxxxxxxxx>
---
 .../devicetree/bindings/interconnect/qcom,rpm.yaml          | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/interconnect/qcom,rpm.yaml b/Documentation/devicetree/bindings/interconnect/qcom,rpm.yaml
index 8a676fef8c1d..4b37aa88a375 100644
--- a/Documentation/devicetree/bindings/interconnect/qcom,rpm.yaml
+++ b/Documentation/devicetree/bindings/interconnect/qcom,rpm.yaml
@@ -45,7 +45,11 @@ properties:
       - qcom,sdm660-snoc
 
   '#interconnect-cells':
-    const: 1
+    description: |
+      Value: <1> is one cell in an interconnect specifier for the
+      interconnect node id, <2> requires the interconnect node id and an
+      extra path tag.
+    enum: [ 1, 2 ]
 
   clocks:
     minItems: 2
-- 
2.25.1




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