[PATCH 3/7] Documentation: sysfs: Document the Lantiq PEF2256 sysfs entry

[Herve Codina]

Document the "subordinate" sysfs attribute exposed by the pef2256
driver.

Signed-off-by: Herve Codina <herve.codina@xxxxxxxxxxx>
---
 .../ABI/testing/sysfs-bus-platform-devices-pef2256     | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256

diff --git a/Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256 b/Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256
new file mode 100644
index 000000000000..b2343b3b6e84
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256
@@ -0,0 +1,10 @@
+What:		/sys/bus/platform/devices/*.pef2256/subordinate
+KernelVersion:	6.4
+Contact:	Herve Codina <herve.codina@xxxxxxxxxxx>
+Description:
+		(RW) Controls whether the PEF2256 works as subordinate or main
+		device mode.
+		  - 0 : main device mode
+		  - 1 : subordinate mode
+		In subordinate device mode it synchronizes on line interface
+		clock signals. Otherwise, it synchronizes on internal clocks.
-- 
2.39.2