This patch documents the device tree binding in use for Arm TRBE.
Cc: devicet...@vger.kernel.org
Cc: Mathieu Poirier <mathieu.poir...@linaro.org>
Cc: Mike Leach <mike.le...@linaro.org>
Cc: Suzuki K Poulose <suzuki.poul...@arm.com>
Signed-off-by: Anshuman Khandual <anshuman.khand...@arm.com>
---
Changes in V1:
- TRBE DT entry has been renamed as 'arm, trace-buffer-extension'
Documentation/devicetree/bindings/arm/trbe.txt | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/trbe.txt
diff --git a/Documentation/devicetree/bindings/arm/trbe.txt
b/Documentation/devicetree/bindings/arm/trbe.txt
new file mode 100644
index 0000000..001945d
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/trbe.txt
@@ -0,0 +1,20 @@
+* Trace Buffer Extension (TRBE)
+
+Trace Buffer Extension (TRBE) is used for collecting trace data generated
+from a corresponding trace unit (ETE) using an in memory trace buffer.
+
+** TRBE Required properties:
+
+- compatible : should be one of:
+ "arm,trace-buffer-extension"
+
+- interrupts : Exactly 1 PPI must be listed. For heterogeneous systems where
+ TRBE is only supported on a subset of the CPUs, please consult
+ the arm,gic-v3 binding for details on describing a PPI partition.
+
+** Example:
+
+trbe {
+ compatible = "arm,trace-buffer-extension";
+ interrupts = <GIC_PPI 15 IRQ_TYPE_LEVEL_HIGH>;
+};
--
2.7.4
