LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Felipe Balbi <balbi@kernel.org>
To: Nehal Bakulchandra Shah <Nehal-Bakulchandra.shah@amd.com>
Cc: gregkh@linuxfoundation.org, linux-usb@vger.kernel.org,
	linux-kernel@vger.kernel.org, kun.liu2@amd.com,
	alexander.deucher@amd.com
Subject: Re: [PATCH 2/2] usb: dwc3: pci add property to allow user space role switch
Date: Tue, 24 Aug 2021 11:19:40 +0300	[thread overview]
Message-ID: <87pmu36ypp.fsf@kernel.org> (raw)
In-Reply-To: <20210823184449.2796184-3-Nehal-Bakulchandra.shah@amd.com>


Nehal Bakulchandra Shah <Nehal-Bakulchandra.shah@amd.com> writes:

> For AMD platform there is a requirement to enable user space role
> switch from host to device and device to host by means of running
> following commands.
>
> HOST:   echo host > /sys/class/usb_role/dwc3.0.auto-role-switch/role
> DEVICE: echo device > /sys/class/usb_role/dwc3.0.auto-role-switch/role

A more important question that needs to be answered: why?

-- 
balbi

  reply	other threads:[~2021-08-24  8:20 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-23 18:44 [PATCH 0/2] Add DWC3 controller suppport for AMD's platforms Nehal Bakulchandra Shah
2021-08-23 18:44 ` [PATCH 1/2] usb: dwc3: pci: add support for AMD's newer generation platform Nehal Bakulchandra Shah
2021-08-24  8:19   ` Felipe Balbi
2021-08-23 18:44 ` [PATCH 2/2] usb: dwc3: pci add property to allow user space role switch Nehal Bakulchandra Shah
2021-08-24  8:19   ` Felipe Balbi [this message]
2021-08-24 16:02     ` Shah, Nehal-bakulchandra
2021-08-24 16:17       ` Felipe Balbi
2021-08-24 16:28         ` Shah, Nehal-bakulchandra
2021-08-24 16:54           ` Felipe Balbi

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=87pmu36ypp.fsf@kernel.org \
    --to=balbi@kernel.org \
    --cc=Nehal-Bakulchandra.shah@amd.com \
    --cc=alexander.deucher@amd.com \
    --cc=gregkh@linuxfoundation.org \
    --cc=kun.liu2@amd.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-usb@vger.kernel.org \
    --subject='Re: [PATCH 2/2] usb: dwc3: pci add property to allow user space role switch' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).