1 files changed, 20 insertions, 0 deletions
diff --git a/kernel/Documentation/devicetree/bindings/arc/pct.txt b/kernel/Documentation/devicetree/bindings/arc/pct.txt
new file mode 100644
index 000000000..7b9588444
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/arc/pct.txt
@@ -0,0 +1,20 @@
+* ARC Performance Counters
+
+The ARC700 can be configured with a pipeline performance monitor for counting
+CPU and cache events like cache misses and hits. Like conventional PCT there
+are 100+ hardware conditions dynamically mapped to upto 32 counters
+
+Note that:
+ * The ARC 700 PCT does not support interrupts; although HW events may be
+   counted, the HW events themselves cannot serve as a trigger for a sample.
+
+Required properties:
+
+- compatible : should contain
+	"snps,arc700-pct"
+
+Example:
+
+pmu {
+        compatible = "snps,arc700-pct";
+};