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| author |   Yossi Mansharoff <yossim@codeaurora.org> | 2018-04-17 16:53:25 +0300 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-25 14:10:32 +0200 |
| commit | 7eced58dbf1056e6a25153ab2d5c068442e33446 (patch) | |
| tree | 29b39551029830e7c76b397caace0e8b45d21133 | |
| parent | usb: do not reset if a low-speed or full-speed device timed out (diff) | |
| download | linux-dev-7eced58dbf1056e6a25153ab2d5c068442e33446.tar.xz linux-dev-7eced58dbf1056e6a25153ab2d5c068442e33446.zip | |
doc: usb: ci-hdrc-usb2: Add property "mux-controls"
The chipidea usb controller may be connected, in some platforms,
to an external mux to toggle between different usb ports for
different roles (host and device).
The mux-controller property, if set, binds the chipidea usb
controller with a mux for this use.
Signed-off-by: Yossi Mansharoff <yossim@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt index 0e03344e2e8b..2e9318151df7 100644 --- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt +++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt @@ -76,6 +76,10 @@ Optional properties: needs to make sure it does not send more than 90% maximum_periodic_data_per_frame. The use case is multiple transactions, but less frame rate. +- mux-controls: The mux control for toggling host/device output of this + controller. It's expected that a mux state of 0 indicates device mode and a + mux state of 1 indicates host mode. +- mux-control-names: Shall be "usb_switch" if mux-controls is specified. i.mx specific properties - fsl,usbmisc: phandler of non-core register device, with one @@ -102,4 +106,6 @@ Example: rx-burst-size-dword = <0x10>; extcon = <0>, <&usb_id>; phy-clkgate-delay-us = <400>; + mux-controls = <&usb_switch>; + mux-control-names = "usb_switch"; }; |