From: Ben Dooks <ben.dooks@codethink.co.uk>
To: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>,
David Laight <David.Laight@ACULAB.COM>,
Stephen Warren <swarren@wwwdotorg.org>,
Alan Stern <stern@rowland.harvard.edu>
Cc: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
"Peter.Chen@freescale.com" <Peter.Chen@freescale.com>,
"thierry.reding@gmail.com" <thierry.reding@gmail.com>,
"balbi@ti.com" <balbi@ti.com>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
"linux-sh@vger.kernel.org" <linux-sh@vger.kernel.org>,
"magnus.damm@gmail.com" <magnus.damm@gmail.com>
Subject: Re: [PATCH 1/2] usb: rename 'phy' field of 'struct usb_hcd' to 'transceiver'
Date: Thu, 10 Apr 2014 12:01:05 +0100 [thread overview]
Message-ID: <534679F1.3050607@codethink.co.uk> (raw)
In-Reply-To: <53467720.8000400@cogentembedded.com>
On 10/04/14 11:49, Sergei Shtylyov wrote:
> On 10-04-2014 13:20, David Laight wrote:
>
>>> It doesn't do any pin muxing. It switches SoC internal USB
>>> signals between
>>> USB controllers. The pins remain the same.
>
>> Doesn't something like that already happen for the companion USB1
>> controllers for USB2 ports?
>
> Did you mean USB 1.1 and USB 2.0 controllers by USB1 and USB2?
>
>> That also doesn't sound like you are changing the PHY.
>
> I am changing one of the PHY registers that controls USB port
> (Renesas calls it channel) multiplexing.
>
>> I'd have thought that would happen if you had a single controller
>> that select between multiply PHY.
>
> No, it's not the case.
There is an interesting case, the USB3 shares a PHY with a SATA
and the PCIE and SATA also share a PHY on the R8A7790.
--
Ben Dooks http://www.codethink.co.uk/
Senior Engineer Codethink - Providing Genius
WARNING: multiple messages have this Message-ID (diff)
From: Ben Dooks <ben.dooks@codethink.co.uk>
To: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>,
David Laight <David.Laight@ACULAB.COM>,
Stephen Warren <swarren@wwwdotorg.org>,
Alan Stern <stern@rowland.harvard.edu>
Cc: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
"Peter.Chen@freescale.com" <Peter.Chen@freescale.com>,
"thierry.reding@gmail.com" <thierry.reding@gmail.com>,
"balbi@ti.com" <balbi@ti.com>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
"linux-sh@vger.kernel.org" <linux-sh@vger.kernel.org>,
"magnus.damm@gmail.com" <magnus.damm@gmail.com>
Subject: Re: [PATCH 1/2] usb: rename 'phy' field of 'struct usb_hcd' to 'transceiver'
Date: Thu, 10 Apr 2014 11:01:05 +0000 [thread overview]
Message-ID: <534679F1.3050607@codethink.co.uk> (raw)
In-Reply-To: <53467720.8000400@cogentembedded.com>
On 10/04/14 11:49, Sergei Shtylyov wrote:
> On 10-04-2014 13:20, David Laight wrote:
>
>>> It doesn't do any pin muxing. It switches SoC internal USB
>>> signals between
>>> USB controllers. The pins remain the same.
>
>> Doesn't something like that already happen for the companion USB1
>> controllers for USB2 ports?
>
> Did you mean USB 1.1 and USB 2.0 controllers by USB1 and USB2?
>
>> That also doesn't sound like you are changing the PHY.
>
> I am changing one of the PHY registers that controls USB port
> (Renesas calls it channel) multiplexing.
>
>> I'd have thought that would happen if you had a single controller
>> that select between multiply PHY.
>
> No, it's not the case.
There is an interesting case, the USB3 shares a PHY with a SATA
and the PCIE and SATA also share a PHY on the R8A7790.
--
Ben Dooks http://www.codethink.co.uk/
Senior Engineer Codethink - Providing Genius
next prev parent reply other threads:[~2014-04-10 11:01 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-09 13:57 [PATCH 1/2] usb: rename 'phy' field of 'struct usb_hcd' to 'transceiver' Sergei Shtylyov
2014-04-09 13:57 ` Sergei Shtylyov
2014-04-09 15:31 ` Stephen Warren
2014-04-09 15:31 ` Stephen Warren
2014-04-09 16:27 ` Sergei Shtylyov
2014-04-09 16:27 ` Sergei Shtylyov
2014-04-09 16:48 ` Stephen Warren
2014-04-09 16:48 ` Stephen Warren
[not found] ` <534579D5.10306-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2014-04-09 16:53 ` Sergei Shtylyov
2014-04-09 16:53 ` Sergei Shtylyov
2014-04-09 17:37 ` Stephen Warren
2014-04-09 17:37 ` Stephen Warren
2014-04-09 17:52 ` Sergei Shtylyov
2014-04-09 17:52 ` Sergei Shtylyov
2014-04-09 17:56 ` Alan Stern
2014-04-09 17:56 ` Alan Stern
2014-04-09 18:16 ` Sergei Shtylyov
2014-04-09 18:16 ` Sergei Shtylyov
[not found] ` <53458E95.4080505-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
2014-04-09 19:01 ` Stephen Warren
2014-04-09 19:01 ` Stephen Warren
[not found] ` <534598EF.3010102-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2014-04-09 19:06 ` Sergei Shtylyov
2014-04-09 19:06 ` Sergei Shtylyov
2014-04-10 9:20 ` David Laight
2014-04-10 10:49 ` Sergei Shtylyov
2014-04-10 10:49 ` Sergei Shtylyov
2014-04-10 11:01 ` Ben Dooks [this message]
2014-04-10 11:01 ` Ben Dooks
2014-04-10 11:14 ` David Laight
2014-04-10 11:20 ` Ben Dooks
2014-04-10 11:20 ` Ben Dooks
[not found] ` <063D6719AE5E284EB5DD2968C1650D6D0F6F44A4-VkEWCZq2GCInGFn1LkZF6NBPR1lH4CV8@public.gmane.org>
2014-04-10 12:40 ` Sergei Shtylyov
2014-04-10 12:40 ` Sergei Shtylyov
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=534679F1.3050607@codethink.co.uk \
--to=ben.dooks@codethink.co.uk \
--cc=David.Laight@ACULAB.COM \
--cc=Peter.Chen@freescale.com \
--cc=balbi@ti.com \
--cc=gregkh@linuxfoundation.org \
--cc=linux-omap@vger.kernel.org \
--cc=linux-sh@vger.kernel.org \
--cc=linux-tegra@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=magnus.damm@gmail.com \
--cc=sergei.shtylyov@cogentembedded.com \
--cc=stern@rowland.harvard.edu \
--cc=swarren@wwwdotorg.org \
--cc=thierry.reding@gmail.com \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.