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[v7,26/28] dts: bindings: coresight: ETM system register access only units

Message ID 20210110224850.1880240-27-suzuki.poulose@arm.com
State Accepted
Commit 61c68c68b826182d93f5e4fe77eb92676a28d513
Headers show
Series None | expand

Commit Message

Suzuki K Poulose Jan. 10, 2021, 10:48 p.m. UTC 
Document the bindings for ETMs with system register accesses.

Cc: devicetree@vger.kernel.org
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>

Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>

---
 Documentation/devicetree/bindings/arm/coresight.txt | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

-- 
2.24.1
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Patch

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";