linux-kernel - [PATCH v4 23/25] dts: bindings: coresight: ETM system register access only units

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Message-Id: <20201119164547.2982871-24-suzuki.poulose@arm.com>
Date:   Thu, 19 Nov 2020 16:45:45 +0000
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     mathieu.poirier@...aro.org, mike.leach@...aro.org,
        linux-kernel@...r.kernel.org, anshuman.khandual@....com,
        jonathan.zhouwen@...wei.com, coresight@...ts.linaro.org,
        Suzuki K Poulose <suzuki.poulose@....com>,
        devicetree@...r.kernel.org, Rob Herring <robh@...nel.org>
Subject: [PATCH v4 23/25] dts: bindings: coresight: ETM system register access only units

Document the bindings for ETMs with system register accesses.

Cc: devicetree@...r.kernel.org
Cc: Mathieu Poirier <mathieu.poirier@...aro.org>
Cc: Mike Leach <mike.leach@...aro.org>
Acked-by: Rob Herring <robh@...nel.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
---
 Documentation/devicetree/bindings/arm/coresight.txt | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/arm/coresight.txt b/Documentation/devicetree/bindings/arm/coresight.txt
index d711676b4a51..7f9c1ca87487 100644
--- a/Documentation/devicetree/bindings/arm/coresight.txt
+++ b/Documentation/devicetree/bindings/arm/coresight.txt
@@ -34,9 +34,12 @@ its hardware characteristcs.
 					Program Flow Trace Macrocell:
 			"arm,coresight-etm3x", "arm,primecell";
 
-		- Embedded Trace Macrocell (version 4.x):
+		- Embedded Trace Macrocell (version 4.x), with memory mapped access.
 			"arm,coresight-etm4x", "arm,primecell";
 
+		- Embedded Trace Macrocell (version 4.x), with system register access only.
+			"arm,coresight-etm4x-sysreg";
+
 		- Coresight programmable Replicator :
 			"arm,coresight-dynamic-replicator", "arm,primecell";
 
-- 
2.24.1