linux-kernel - [PATCH v2 1/3] dt-bindings: arm: document the static TPDM compatible

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Message-Id: <20250911-add_static_tpdm_support-v2-1-608559d36f74@oss.qualcomm.com>
Date: Thu, 11 Sep 2025 17:36:56 +0800
From: Jie Gan <jie.gan@....qualcomm.com>
To: Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach <mike.leach@...aro.org>,
        James Clark <james.clark@...aro.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Tingwei Zhang <tingwei.zhang@....qualcomm.com>,
        Jinlong Mao <jinlong.mao@....qualcomm.com>,
        Tao Zhang <tao.zhang@....qualcomm.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>
Cc: coresight@...ts.linaro.org, linux-arm-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jie Gan <jie.gan@....qualcomm.com>
Subject: [PATCH v2 1/3] dt-bindings: arm: document the static TPDM
 compatible

The static TPDM device is intended for sources that do not require MMIO
mapping. Its compatible string should be documented clearly, along with
an example illustrating how to define a static TPDM node in the DT.

Reviewed-by: Rob Herring (Arm) <robh@...nel.org>
Signed-off-by: Jie Gan <jie.gan@....qualcomm.com>
---
 .../bindings/arm/qcom,coresight-tpdm.yaml          | 23 +++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
index 07d21a3617f5..7c0acc1f25c5 100644
--- a/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
+++ b/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
@@ -36,9 +36,12 @@ properties:
   $nodename:
     pattern: "^tpdm(@[0-9a-f]+)$"
   compatible:
-    items:
-      - const: qcom,coresight-tpdm
-      - const: arm,primecell
+    oneOf:
+      - items:
+          - const: qcom,coresight-static-tpdm
+      - items:
+          - const: qcom,coresight-tpdm
+          - const: arm,primecell
 
   reg:
     maxItems: 1
@@ -143,4 +146,18 @@ examples:
         };
       };
     };
+
+    turing-llm-tpdm {
+      compatible = "qcom,coresight-static-tpdm";
+
+      qcom,cmb-element-bits = <32>;
+
+      out-ports {
+        port {
+         turing_llm_tpdm_out: endpoint {
+           remote-endpoint = <&turing0_funnel_in1>;
+         };
+        };
+      };
+    };
 ...

-- 
2.34.1