dt-bindings: interconnect: document the RPMh Network-On-Chip interconnect in Kaanapali SoC

Document the RPMh Network-On-Chip Interconnect of the Kaanapali platform.

Co-developed-by: Odelu Kukatla <odelu.kukatla@oss.qualcomm.com>
Signed-off-by: Odelu Kukatla <odelu.kukatla@oss.qualcomm.com>
Signed-off-by: Raviteja Laggyshetty <raviteja.laggyshetty@oss.qualcomm.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20251031-knp-interconnect-v4-1-568bba2cb3e5@oss.qualcomm.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>

1 files changed, 124 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/interconnect/qcom,kaanapali-rpmh.yaml b/Documentation/devicetree/bindings/interconnect/qcom,kaanapali-rpmh.yaml
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+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interconnect/qcom,kaanapali-rpmh.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm RPMh Network-On-Chip Interconnect on Kaanapali
+
+maintainers:
+  - Raviteja Laggyshetty <raviteja.laggyshetty@oss.qualcomm.com>
+
+description: |
+  RPMh interconnect providers support system bandwidth requirements through
+  RPMh hardware accelerators known as Bus Clock Manager (BCM). The provider is
+  able to communicate with the BCM through the Resource State Coordinator (RSC)
+  associated with each execution environment. Provider nodes must point to at
+  least one RPMh device child node pertaining to their RSC and each provider
+  can map to multiple RPMh resources.
+
+  See also: include/dt-bindings/interconnect/qcom,kaanapali-rpmh.h
+
+properties:
+  compatible:
+    enum:
+      - qcom,kaanapali-aggre-noc
+      - qcom,kaanapali-clk-virt
+      - qcom,kaanapali-cnoc-main
+      - qcom,kaanapali-cnoc-cfg
+      - qcom,kaanapali-gem-noc
+      - qcom,kaanapali-lpass-ag-noc
+      - qcom,kaanapali-lpass-lpiaon-noc
+      - qcom,kaanapali-lpass-lpicx-noc
+      - qcom,kaanapali-mc-virt
+      - qcom,kaanapali-mmss-noc
+      - qcom,kaanapali-nsp-noc
+      - qcom,kaanapali-pcie-anoc
+      - qcom,kaanapali-system-noc
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    minItems: 2
+    maxItems: 3
+
+required:
+  - compatible
+
+allOf:
+  - $ref: qcom,rpmh-common.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,kaanapali-clk-virt
+              - qcom,kaanapali-mc-virt
+    then:
+      properties:
+        reg: false
+    else:
+      required:
+        - reg
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,kaanapali-pcie-anoc
+    then:
+      properties:
+        clocks:
+          items:
+            - description: aggre-NOC PCIe AXI clock
+            - description: cfg-NOC PCIe a-NOC AHB clock
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,kaanapali-aggre-noc
+    then:
+      properties:
+        clocks:
+          items:
+            - description: aggre UFS PHY AXI clock
+            - description: aggre USB3 PRIM AXI clock
+            - description: RPMH CC IPA clock
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,kaanapali-aggre-noc
+              - qcom,kaanapali-pcie-anoc
+    then:
+      required:
+        - clocks
+    else:
+      properties:
+        clocks: false
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    clk_virt: interconnect-0 {
+      compatible = "qcom,kaanapali-clk-virt";
+      #interconnect-cells = <2>;
+      qcom,bcm-voters = <&apps_bcm_voter>;
+    };
+
+    aggre_noc: interconnect@16e0000 {
+      compatible = "qcom,kaanapali-aggre-noc";
+      reg = <0x016e0000 0x42400>;
+      #interconnect-cells = <2>;
+      clocks = <&gcc_aggre_ufs_phy_axi_clk>,
+               <&gcc_aggre_usb3_prim_axi_clk>,
+               <&rpmhcc_ipa_clk>;
+      qcom,bcm-voters = <&apps_bcm_voter>;
+    };