[PATCH v5 2/2] docs: ABI: testing: document hid interval attributes

[Arthur Crepin Leblond]

Add usb gadget hid function interval attributes documentation
- interval
- interval_fs
- interval_hs
- interval_ss

Signed-off-by: Arthur Crepin Leblond <arthur@xxxxxxxxxxxxx>
---
 Documentation/ABI/testing/configfs-usb-gadget-hid | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/ABI/testing/configfs-usb-gadget-hid b/Documentation/ABI/testing/configfs-usb-gadget-hid
index 748705c4cb58..8e0b987ea5ad 100644
--- a/Documentation/ABI/testing/configfs-usb-gadget-hid
+++ b/Documentation/ABI/testing/configfs-usb-gadget-hid
@@ -10,4 +10,12 @@ Description:
 				except the data passed through /dev/hidg<N>
 		report_length	HID report length
 		subclass	HID device subclass to use
+		interval_fs	HID endpoint bInterval for full-speed
+				(in milliseconds, default: 10)
+		interval_hs	HID endpoint bInterval for high-speed, encoded
+				as 2^(bInterval-1) * 125 us (default: 4, i.e. 1 ms)
+		interval_ss	HID endpoint bInterval for super-speed, encoded
+				as 2^(bInterval-1) * 125 us (default: 4, i.e. 1 ms)
+		interval	HID endpoint bInterval for all speeds.
+				Overwrites the per-speed values above
 		=============	============================================

-- 
2.55.0