linux-kernel - [PATCH v9 12/13] dt-bindings: arm: Add support for DSB MSR register

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Date:   Thu, 14 Sep 2023 13:43:23 +0800
From:   Tao Zhang <quic_taozha@...cinc.com>
To:     Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Konrad Dybcio <konradybcio@...il.com>,
        Mike Leach <mike.leach@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
CC:     Tao Zhang <quic_taozha@...cinc.com>,
        Jinlong Mao <quic_jinlmao@...cinc.com>,
        Leo Yan <leo.yan@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <coresight@...ts.linaro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        Tingwei Zhang <quic_tingweiz@...cinc.com>,
        Yuanfang Zhang <quic_yuanfang@...cinc.com>,
        Trilok Soni <quic_tsoni@...cinc.com>,
        Hao Zhang <quic_hazha@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <andersson@...nel.org>
Subject: [PATCH v9 12/13] dt-bindings: arm: Add support for DSB MSR register

Add property "qcom,dsb-msrs-num" to support DSB(Discrete Single
Bit) MSR(mux select register) for TPDM. It specifies the number
of MSR registers supported by the DSB TDPM.

Signed-off-by: Tao Zhang <quic_taozha@...cinc.com>
Acked-by: Rob Herring <robh@...nel.org>
---
 Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
index e19fc37..61ddc3b 100644
--- a/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
+++ b/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
@@ -52,6 +52,15 @@ properties:
     $ref: /schemas/types.yaml#/definitions/uint8
     enum: [32, 64]
 
+  qcom,dsb-msrs-num:
+    description:
+      Specifies the number of DSB(Discrete Single Bit) MSR(mux select register)
+      registers supported by the monitor. If this property is not configured
+      or set to 0, it means this DSB TPDM doesn't support MSR.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 32
+
   clocks:
     maxItems: 1
 
@@ -86,6 +95,7 @@ examples:
       reg = <0x0684c000 0x1000>;
 
       qcom,dsb-element-size = /bits/ 8 <32>;
+      qcom,dsb-msrs-num = <16>;
 
       clocks = <&aoss_qmp>;
       clock-names = "apb_pclk";
-- 
2.7.4