path: root/Documentation/usb
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authorAndrzej Pietrasiewicz <andrzej.p@samsung.com>2014-12-16 13:56:28 (GMT)
committerFelipe Balbi <balbi@ti.com>2015-01-12 18:13:24 (GMT)
commit4ca560a6d31d1deae004a9977adf64766e87a021 (patch)
treee0f79b959a51869b0b6e79cab31d09002200db59 /Documentation/usb
parent7bfbc6e3fbd9ae35b28db1839689b7eb4025c93d (diff)
Documentation: usb: EEM function testing
Summary of how to test EEM function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'Documentation/usb')
1 files changed, 34 insertions, 0 deletions
diff --git a/Documentation/usb/gadget-testing.txt b/Documentation/usb/gadget-testing.txt
index b40db75..50b0a6c 100644
--- a/Documentation/usb/gadget-testing.txt
+++ b/Documentation/usb/gadget-testing.txt
@@ -4,6 +4,7 @@ provided by gadgets.
1. ACM function
2. ECM function
3. ECM subset function
+4. EEM function
1. ACM function
@@ -100,3 +101,36 @@ Configure IP addresses of the device and the host. Then:
On the device: ping <host's IP>
On the host: ping <device's IP>
+4. EEM function
+The function is provided by usb_f_eem.ko module.
+Function-specific configfs interface
+The function name to use when creating the function directory is "eem".
+The EEM function provides these attributes in its function directory:
+ ifname - network device interface name associated with this
+ function instance
+ qmult - queue length multiplier for high and super speed
+ host_addr - MAC address of host's end of this
+ Ethernet over USB link
+ dev_addr - MAC address of device's end of this
+ Ethernet over USB link
+and after creating the functions/eem.<instance name> they contain default
+values: qmult is 5, dev_addr and host_addr are randomly selected.
+Except for ifname they can be written to until the function is linked to a
+configuration. The ifname is read-only and contains the name of the interface
+which was assigned by the net core, e. g. usb0.
+Testing the EEM function
+Configure IP addresses of the device and the host. Then:
+On the device: ping <host's IP>
+On the host: ping <device's IP>

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