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Add a new binding for USB interface nodes, which are child nodes of
USB device nodes and addressed by interface number and configuration
value tuples.
Also add a new binding for USB combined nodes, which are special case
nodes for simple USB devices for which they replace the device and
interface nodes.
For completeness, define the already used terms "host-controller node",
"device node" and "hub node".
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Hub nodes and host-controller nodes with child nodes must specify values
for #address-cells (1) and #size-cells (0).
Also make the definition of the related reg property a bit more
stringent, and add comments to the example source.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
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Add quotation marks around the compatible string to avoid ambiguity due
to following punctuation, and define the VID and PID components.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
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The USB hub port-number range for USB 2.0 is 1-255 and not 1-31 which
reflects an arbitrary limit set by the current Linux implementation.
Note that for USB 3.1 hubs the valid range is 1-15.
Increase the documented valid range in the binding to 255, which is the
maximum allowed by the specifications.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
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According to the OF Recommended Practice for USB, hub nodes shall be
named "hub", but the example had mixed up the label and node names. Fix
the node name and drop the redundant label.
While at it, remove a newline and add a missing semicolon to the example
source.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
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Pretty much any node can have a status property, so it doesn't need to
be in examples.
Converted with the following command and removed examples with SoC and
board specific splits:
git grep -l -E 'status.*=.*' Documentation/devicetree/ | xargs sed -i -E '/\sstatus.*=.*"(disabled|ok|okay)/d'
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
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The mirrors for old, but still referenced OF documents have disappeared.
A new mirror has been setup on devicetree.org at:
http://devicetree.org/open-firmware/home.html
Update the URLs in the binding documents with the new mirror.
Cc: Brian Norris <briannorris@chromium.org>
Reviewed-by: Harvey Hunt <harvey.hunt@imgtec.com>
Signed-off-by: Rob Herring <robh@kernel.org>
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Although most of USB devices are hot-plug's, there are still some devices
are hard wired on the board, eg, for HSIC and SSIC interface USB devices.
If these kinds of USB devices are multiple functions, and they can supply
other interfaces like i2c, gpios for other devices, we may need to
describe these at device tree.
In this commit, it uses "reg" in dts as physical port number to match
the phyiscal port number decided by USB core, if they are the same,
then the device node is for the device we are creating for USB core.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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