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From:   Leo Yan <leo.yan@linaro.org>
To:     Andy Gross <agross@kernel.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Georgi Djakov <djakov@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Cc:     Leo Yan <leo.yan@linaro.org>
Subject: [PATCH v3 1/5] dt-bindings: interconnect: Update property for icc-rpm path tag
Date:   Mon,  4 Jul 2022 17:30:25 +0800
Message-Id: <20220704093029.1126609-2-leo.yan@linaro.org>
In-Reply-To: <20220704093029.1126609-1-leo.yan@linaro.org>
References: <20220704093029.1126609-1-leo.yan@linaro.org>
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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@linaro.org>
---
 .../devicetree/bindings/interconnect/qcom,rpm.yaml         | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/interconnect/qcom,rpm.yaml b/Documentation/devicetree/bindings/interconnect/qcom,rpm.yaml
index 8a676fef8c1d..cdfe419e7339 100644
--- a/Documentation/devicetree/bindings/interconnect/qcom,rpm.yaml
+++ b/Documentation/devicetree/bindings/interconnect/qcom,rpm.yaml
@@ -45,7 +45,12 @@ properties:
       - qcom,sdm660-snoc
 
   '#interconnect-cells':
-    const: 1
+    description: |
+      Number of interconnect specifier. Value: <1> is one cell in a
+      interconnect specifier for the interconnect node id, <2> requires
+      the interconnect node id and an extra path tag.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [ 1, 2 ]
 
   clocks:
     minItems: 2
-- 
2.25.1