diff mbox

[v2] doc: usb: ci-hdrc-usb2: Add property "mux-controls"

Message ID 1523973206-2165-1-git-send-email-yossim@codeaurora.org (mailing list archive)
State New, archived
Headers show

Commit Message

Yossi Mansharoff April 17, 2018, 1:53 p.m. UTC
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>
---
 Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt | 6 ++++++
 1 file changed, 6 insertions(+)

Comments

Rob Herring April 24, 2018, 1:59 p.m. UTC | #1
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 <yossim@codeaurora.org>
> ---
>  Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt | 6 ++++++
>  1 file changed, 6 insertions(+)

Reviewed-by: Rob Herring <robh@kernel.org>
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diff mbox

Patch

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";
 	};