dt-bindings: interconnect: Update Qualcomm SDM845 DT bindings

Redefine the Network-on-Chip devices to more accurately describe
the interconnect topology on Qualcomm's SDM845 platform. Each
interconnect device can communicate with different instances of the
RPMh hardware which are described as RSCs(Resource State Coordinators).

Signed-off-by: David Dai <daidavid1@codeaurora.org>
Signed-off-by: Odelu Kukatla <okukatla@codeaurora.org>
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200209183411.17195-4-sibis@codeaurora.org
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>

diff --git a/Documentation/devicetree/bindings/interconnect/qcom,sdm845.yaml b/Documentation/devicetree/bindings/interconnect/qcom,sdm845.yaml
index 11a495dbfc520c164fdae4cd54af98b2d526063c..8b087e0b0b811768578b3d520b75fcdb3bd780ad 100644 (file)
--- a/Documentation/devicetree/bindings/interconnect/qcom,sdm845.yaml
+++ b/Documentation/devicetree/bindings/interconnect/qcom,sdm845.yaml
@@ -13,21 +13,44 @@ description: |
    SDM845 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 reside within
-   an RPMh device node pertaining to their RSC and each provider maps to a
-   single RPMh resource.
+   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.
 
 properties:
+  reg:
+    maxItems: 1
+
   compatible:
     enum:
-      - qcom,sdm845-rsc-hlos
+      - qcom,sdm845-aggre1-noc
+      - qcom,sdm845-aggre2-noc
+      - qcom,sdm845-config-noc
+      - qcom,sdm845-dc-noc
+      - qcom,sdm845-gladiator-noc
+      - qcom,sdm845-mem-noc
+      - qcom,sdm845-mmss-noc
+      - qcom,sdm845-system-noc
 
   '#interconnect-cells':
     const: 1
 
+  qcom,bcm-voters:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    description: |
+      List of phandles to qcom,bcm-voter nodes that are required by
+      this interconnect to send RPMh commands.
+
+  qcom,bcm-voter-names:
+    $ref: /schemas/types.yaml#/definitions/string-array
+    description: |
+      Names for each of the qcom,bcm-voters specified.
+
 required:
   - compatible
+  - reg
   - '#interconnect-cells'
+  - qcom,bcm-voters
 
 additionalProperties: false
 
@@ -35,9 +58,17 @@ examples:
   - |
       #include <dt-bindings/interconnect/qcom,sdm845.h>
 
-      apps_rsc: rsc {
-              rsc_hlos: interconnect {
-                      compatible = "qcom,sdm845-rsc-hlos";
-                      #interconnect-cells = <1>;
-              };
+      mem_noc: interconnect@1380000 {
+             compatible = "qcom,sdm845-mem-noc";
+             reg = <0 0x01380000 0 0x27200>;
+             #interconnect-cells = <1>;
+             qcom,bcm-voters = <&apps_bcm_voter>;
+      };
+
+      mmss_noc: interconnect@1740000 {
+             compatible = "qcom,sdm845-mmss-noc";
+             reg = <0 0x01740000 0 0x1c1000>;
+             #interconnect-cells = <1>;
+             qcom,bcm-voter-names = "apps", "disp";
+             qcom,bcm-voters = <&apps_bcm_voter>, <&disp_bcm_voter>;
       };