[PATCH 4/6] phy: twl4030-usb: add ABI documentation

[NeilBrown]

From: NeilBrown <neilb@xxxxxxx>

This driver device one local attribute: vbus.
Describe that in Documentation/ABI/testing/sysfs-platform/twl4030-usb.

Signed-off-by: NeilBrown <neil@xxxxxxxxxx>
---
 .../ABI/testing/sysfs-platform-twl4030-usb         |    8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-platform-twl4030-usb

diff --git a/Documentation/ABI/testing/sysfs-platform-twl4030-usb b/Documentation/ABI/testing/sysfs-platform-twl4030-usb
new file mode 100644
index 000000000000..512c51be64ae
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-twl4030-usb
@@ -0,0 +1,8 @@
+What: /sys/bus/platform/devices/*twl4030-usb/vbus
+Description:
+	Read-only status reporting if VBUS (approx 5V)
+	is being supplied by the USB bus.
+
+	Possible values: "on", "off".
+
+	Changes are notified via select/poll.


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