linux-kernel - [PATCH v2 1/3] dt-bindings: interconnect: qcom,qcs8300-rpmh: add clocks property to enable QoS

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Message-ID: <20260127090116.1438780-2-odelu.kukatla@oss.qualcomm.com>
Date: Tue, 27 Jan 2026 14:31:14 +0530
From: Odelu Kukatla <odelu.kukatla@....qualcomm.com>
To: Georgi Djakov <djakov@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>
Cc: Raviteja Laggyshetty <raviteja.laggyshetty@....qualcomm.com>,
        Odelu Kukatla <odelu.kukatla@....qualcomm.com>,
        Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Mike Tipton <mike.tipton@....qualcomm.com>
Subject: [PATCH v2 1/3] dt-bindings: interconnect: qcom,qcs8300-rpmh: add clocks property to enable QoS

Some QCS8300 interconnect nodes have QoS registers located inside
a block whose interface is clock-gated. For those nodes, driver
must enable the corresponding clock(s) before accessing the
registers. Add the 'clocks' property so the driver can obtain
and enable the required clock(s).

Only interconnects that have clock‑gated QoS register interface
use this property; it is not applicable to all interconnect nodes.

Signed-off-by: Odelu Kukatla <odelu.kukatla@....qualcomm.com>
---
 .../interconnect/qcom,qcs8300-rpmh.yaml       | 63 +++++++++++++++++++
 1 file changed, 63 insertions(+)

diff --git a/Documentation/devicetree/bindings/interconnect/qcom,qcs8300-rpmh.yaml b/Documentation/devicetree/bindings/interconnect/qcom,qcs8300-rpmh.yaml
index e9f528d6d9a8..88fe17277110 100644
--- a/Documentation/devicetree/bindings/interconnect/qcom,qcs8300-rpmh.yaml
+++ b/Documentation/devicetree/bindings/interconnect/qcom,qcs8300-rpmh.yaml
@@ -35,6 +35,10 @@ properties:
   reg:
     maxItems: 1
 
+  clocks:
+    minItems: 1
+    maxItems: 4
+
 required:
   - compatible
 
@@ -54,6 +58,64 @@ allOf:
       required:
         - reg
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,qcs8300-aggre1-noc
+    then:
+      properties:
+        clocks:
+          items:
+            - description: aggre UFS PHY AXI clock
+            - description: aggre QUP PRIM AXI clock
+            - description: aggre USB2 PRIM AXI clock
+            - description: aggre USB3 PRIM AXI clock
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,qcs8300-aggre2-noc
+    then:
+      properties:
+        clocks:
+          items:
+            - description: RPMH CC IPA clock
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,qcs8300-gem-noc
+    then:
+      properties:
+        clocks:
+          items:
+            - description: GCC DDRSS GPU AXI clock
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,qcs8300-clk-virt
+              - qcom,qcs8300-config-noc
+              - qcom,qcs8300-dc-noc
+              - qcom,qcs8300-gpdsp-anoc
+              - qcom,qcs8300-lpass-ag-noc
+              - qcom,qcs8300-mc-virt
+              - qcom,qcs8300-mmss-noc
+              - qcom,qcs8300-nspa-noc
+              - qcom,qcs8300-pcie-anoc
+              - qcom,qcs8300-system-noc
+    then:
+      properties:
+        clocks: false
+
 unevaluatedProperties: false
 
 examples:
@@ -63,6 +125,7 @@ examples:
         reg = <0x9100000 0xf7080>;
         #interconnect-cells = <2>;
         qcom,bcm-voters = <&apps_bcm_voter>;
+        clocks = <&gcc_ddrss_gpu_axi_clk>;
     };
 
     clk_virt: interconnect-0 {
-- 
2.43.0