linux-kernel - Re: [PATCH 1/2] dt-bindings: usb-xhci: Add usb-phy-port-reset property

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Message-ID: <20190225213807.GA18852@bogus>
Date:   Mon, 25 Feb 2019 15:38:07 -0600
From:   Rob Herring <robh@...nel.org>
To:     Srinath Mannam <srinath.mannam@...adcom.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Mark Rutland <mark.rutland@....com>, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: usb-xhci: Add usb-phy-port-reset
 property

On Tue, Feb 05, 2019 at 11:48:53AM +0530, Srinath Mannam wrote:
> Add usb-phy-port-reset optional property to set quirk in xhci platform
> driver which forces USB port PHY reset on port disconnect event.
> 
> Signed-off-by: Srinath Mannam <srinath.mannam@...adcom.com>
> Reviewed-by: Ray Jui <ray.jui@...adcom.com>
> ---
>  Documentation/devicetree/bindings/usb/usb-xhci.txt | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/Documentation/devicetree/bindings/usb/usb-xhci.txt b/Documentation/devicetree/bindings/usb/usb-xhci.txt
> index fea8b15..ecbdb15 100644
> --- a/Documentation/devicetree/bindings/usb/usb-xhci.txt
> +++ b/Documentation/devicetree/bindings/usb/usb-xhci.txt
> @@ -40,6 +40,7 @@ Optional properties:
>    - usb3-lpm-capable: determines if platform is USB3 LPM capable
>    - quirk-broken-port-ped: set if the controller has broken port disable mechanism
>    - imod-interval-ns: default interrupt moderation interval is 5000ns
> +  - usb-phy-port-reset: set this to do USB PORT PHY reset while disconnect
>    - phys : see usb-hcd.txt in the current directory

This should be implied by the HCI or phy compatible string (depending 
on who exactly needs the quirky behavior).

Rob