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 <[email protected]>
---
Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
index 0e03344..2e93181 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";
};
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
On Tue, Apr 17, 2018 at 04:53:25PM +0300, Yossi Mansharoff wrote:
> 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 <[email protected]>
> ---
> Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt | 6 ++++++
> 1 file changed, 6 insertions(+)
Reviewed-by: Rob Herring <[email protected]>