linux-kernel - [PATCH 2/2] dt-bindings: arm: coresight-tmc: Add 'iommu' property

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Message-Id: <20220721212718.1980905-2-robh@kernel.org>
Date:   Thu, 21 Jul 2022 15:27:15 -0600
From:   Rob Herring <robh@...nel.org>
To:     Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Leo Yan <leo.yan@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>
Cc:     coresight@...ts.linaro.org, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com
Subject: [PATCH 2/2] dt-bindings: arm: coresight-tmc: Add 'iommu' property

The Coresight TMC component may be behind an IOMMU which is the case for
the Arm Juno SoC and some Qualcomm SoCs. Add 'iommus' property to the
binding.

Signed-off-by: Rob Herring <robh@...nel.org>
---
 Documentation/devicetree/bindings/arm/arm,coresight-tmc.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/arm,coresight-tmc.yaml b/Documentation/devicetree/bindings/arm/arm,coresight-tmc.yaml
index e0b88a71356a..cb8dceaca70e 100644
--- a/Documentation/devicetree/bindings/arm/arm,coresight-tmc.yaml
+++ b/Documentation/devicetree/bindings/arm/arm,coresight-tmc.yaml
@@ -55,6 +55,9 @@ properties:
       - const: apb_pclk
       - const: atclk
 
+  iommus:
+    maxItems: 1
+
   power-domains:
     maxItems: 1
 
-- 
2.34.1