linux-kernel - [PATCH v2 3/6] dt-bindings: interconnect: Update Qualcomm SDM845 DT bindings

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu,  9 Jan 2020 20:33:01 -0800
From:   David Dai <daidavid1@...eaurora.org>
To:     georgi.djakov@...aro.org, bjorn.andersson@...aro.org,
        robh+dt@...nel.org
Cc:     David Dai <daidavid1@...eaurora.org>, evgreen@...gle.com,
        sboyd@...nel.org, ilina@...eaurora.org, seansw@....qualcomm.com,
        elder@...aro.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-pm@...r.kernel.org
Subject: [PATCH v2 3/6] 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@...eaurora.org>
---
 .../bindings/interconnect/qcom,sdm845.yaml         | 49 ++++++++++++++++++----
 1 file changed, 40 insertions(+), 9 deletions(-)

diff --git a/Documentation/devicetree/bindings/interconnect/qcom,sdm845.yaml b/Documentation/devicetree/bindings/interconnect/qcom,sdm845.yaml
index 61e0097..6741a12 100644
--- 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-voter-names:
+    items:
+      - const: apps
+      - const: disp
+
+  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.
+
 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@...0000 {
+             compatible = "qcom,sdm845-mem-noc";
+             reg = <0 0x01380000 0 0x27200>;
+             #interconnect-cells = <1>;
+             qcom,bcm-voters = <&apps_bcm_voter>;
+      };
+
+      mmss_noc: interconnect@...0000 {
+             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>;
       };
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project