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| author | Johan Hovold <johan@hovoldconsulting.com> | 2016-02-22 18:50:56 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@google.com> | 2016-02-25 16:23:01 -0800 |
| commit | c8733c513df38d5e5b3a19fe54be0f5821bfda2a (patch) | |
| tree | 5fe4aca924e1eeced0858240daa28ac3077b367f /drivers/staging/greybus/Documentation | |
| parent | bd93d2a819c5e6081920f5dc775fc3361dbca5f7 (diff) | |
| download | linux-c8733c513df38d5e5b3a19fe54be0f5821bfda2a.tar.bz2 | |
greybus: Documentation/sysfs: make 1-5 a 2x2 module
Make example module 1-5 a 2x2 module by adding a second, dummy
interface.
This is both an example of how a 2x2 module would be represented and
also suggests what a dummy interface may look like.
A 2x2 module has two child interface devices and a num_interfaces value
of two.
In this example, the secondary interface 1-5.6, is a dummy interface and
therefore lacks the normal identifying attributes (e.g. UniPro DDBL1 and
Ara ids). We may eventually add an interface_type attribute to
facilitate distinguishing various interface types (there may be more
than two).
In the following tree, the bundle attributes and child devices have been
left out:
greybus1/
├── 1-2
│ ├── 1-2.2
│ │ ├── 1-2.2.1
│ │ ├── 1-2.2.2
│ │ ├── ddbl1_manufacturer_id
│ │ ├── ddbl1_product_id
│ │ ├── interface_id
│ │ ├── product_id
│ │ ├── serial_number
│ │ ├── unique_id
│ │ └── vendor_id
│ ├── eject
│ ├── module_id
│ └── num_interfaces
├── 1-5
│ ├── 1-5.5
│ │ ├── 1-5.5.2
│ │ ├── ddbl1_manufacturer_id
│ │ ├── ddbl1_product_id
│ │ ├── interface_id
│ │ ├── product_id
│ │ ├── serial_number
│ │ ├── unique_id
│ │ └── vendor_id
│ ├── 1-5.6
│ │ └── interface_id
│ ├── eject
│ ├── module_id
│ └── num_interfaces
└── 1-svc
In this example there are two modules: 1-2 is a 1x2 module with one
interface, and 1-5 is a 2x2 module with two interfaces of which the
second (1-5.6) is a dummy interface.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'drivers/staging/greybus/Documentation')
| -rw-r--r-- | drivers/staging/greybus/Documentation/sysfs/greybus1/1-5/1-5.6/interface_id | 1 | ||||
| -rw-r--r-- | drivers/staging/greybus/Documentation/sysfs/greybus1/1-5/num_interfaces | 2 |
2 files changed, 2 insertions, 1 deletions
diff --git a/drivers/staging/greybus/Documentation/sysfs/greybus1/1-5/1-5.6/interface_id b/drivers/staging/greybus/Documentation/sysfs/greybus1/1-5/1-5.6/interface_id new file mode 100644 index 000000000000..1e8b31496214 --- /dev/null +++ b/drivers/staging/greybus/Documentation/sysfs/greybus1/1-5/1-5.6/interface_id @@ -0,0 +1 @@ +6 diff --git a/drivers/staging/greybus/Documentation/sysfs/greybus1/1-5/num_interfaces b/drivers/staging/greybus/Documentation/sysfs/greybus1/1-5/num_interfaces index d00491fd7e5b..0cfbf08886fc 100644 --- a/drivers/staging/greybus/Documentation/sysfs/greybus1/1-5/num_interfaces +++ b/drivers/staging/greybus/Documentation/sysfs/greybus1/1-5/num_interfaces @@ -1 +1 @@ -1 +2 |