linux-kernel - Re: [PATCH v2] usb: chipidea: Hook into mux framework to toggle usb switch

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Date:   Tue, 17 Apr 2018 16:11:26 +0200
From:   Peter Rosin <peda@...ntia.se>
To:     Yossi Mansharoff <yossim@...eaurora.org>,
        Peter Chen <Peter.Chen@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "open list:CHIPIDEA USB HIGH SPEED DUAL ROLE CONTROLLER" 
        <linux-usb@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Cc:     robh@...nel.org, swboyd@...omium.org, devicetree@...r.kernel.org,
        Stephen Boyd <stephen.boyd@...aro.org>
Subject: Re: [PATCH v2] usb: chipidea: Hook into mux framework to toggle usb
 switch

On 2018-04-17 15:52, Yossi Mansharoff wrote:
> On the db410c 96boards platform we have a TC7USB40MU on the board
> to mux the D+/D- lines coming from the controller between a micro
> usb "device" port and a USB hub for "host" roles[1]. During a
> role switch, we need to toggle this mux to forward the D+/D-
> lines to either the port or the hub. Add the necessary code to do
> the role switch in chipidea core via the generic mux framework.
> Board configurations like on db410c are expected to change roles
> via the sysfs API described in
> Documentation/ABI/testing/sysfs-platform-chipidea-usb2.

Ok, so this is v2. Please describe what is different from v1.
I have told you before that this information helps.

> [1] https://github.com/96boards/documentation/raw/master/ConsumerEdition/DragonBoard-410c/HardwareDocs/Schematics_DragonBoard.pdf

This link returns 404 for me.

Cheers,
Peter