bus: ARM CCN PMU driver
Driver providing perf backend for ARM Cache Coherent Network
interconnect. Supports counting all hardware events and crosspoint
watchpoints.
Currently works with CCN-504 only, although there should be
no changes required for CCN-508 (just impossible to test it now).
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/Documentation/devicetree/bindings/arm/ccn.txt b/Documentation/devicetree/bindings/arm/ccn.txt
new file mode 100644
index 0000000..b100d38
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/ccn.txt
@@ -0,0 +1,21 @@
+* ARM CCN (Cache Coherent Network)
+
+Required properties:
+
+- compatible: (standard compatible string) should be one of:
+ "arm,ccn-504"
+ "arm,ccn-508"
+
+- reg: (standard registers property) physical address and size
+ (16MB) of the configuration registers block
+
+- interrupts: (standard interrupt property) single interrupt
+ generated by the control block
+
+Example:
+
+ ccn@0x2000000000 {
+ compatible = "arm,ccn-504";
+ reg = <0x20 0x00000000 0 0x1000000>;
+ interrupts = <0 181 4>;
+ };