Commit 6f690e16 authored by David Dai's avatar David Dai Committed by Georgi Djakov
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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: default avatarDavid Dai <daidavid1@codeaurora.org>
Signed-off-by: default avatarOdelu Kukatla <okukatla@codeaurora.org>
Signed-off-by: default avatarSibi Sankar <sibis@codeaurora.org>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200209183411.17195-4-sibis@codeaurora.org


Signed-off-by: default avatarGeorgi Djakov <georgi.djakov@linaro.org>
parent c92cf0b4
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+40 −9
Original line number Diff line number Diff line
@@ -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";
      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>;
      };