diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-caps b/Documentation/ABI/testing/sysfs-bus-event_source-devices-caps
new file mode 100644
index 000000000000..8757dcf41c08
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+What:		/sys/bus/event_source/devices/<dev>/caps
+Date:		May 2022
+KernelVersion:	5.19
+Contact:	Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description:
+		Attribute group to describe the capabilities exposed
+		for a particular pmu. Each attribute of this group can
+		expose information specific to a PMU, say pmu_name, so that
+		userspace can understand some of the feature which the
+		platform specific PMU supports.
+
+		One of the example available capability in supported platform
+		like Intel is pmu_name, which exposes underlying CPU name known
+		to the PMU driver.
+
+		Example output in powerpc:
+		grep . /sys/bus/event_source/devices/cpu/caps/*
+		/sys/bus/event_source/devices/cpu/caps/pmu_name:POWER9