From: Alexandre Belloni <alexandre.belloni@free-electrons.com>
To: Olof Johansson <olof@lixom.net>
Cc: Arnd Bergmann <arnd@arndb.de>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Ludovic Desroches <ludovic.desroches@atmel.com>,
Nicolas Ferre <nicolas.ferre@atmel.com>
Subject: Re: How to support SDIO wifi/bt in DT
Date: Fri, 17 Jan 2014 10:02:14 +0100 [thread overview]
Message-ID: <20140117090214.GA2348@piout.net> (raw)
In-Reply-To: <CAOesGMgzi5Buduo2pd0PP8CvKVir69yZ-jjX0Gbda871GiD8rg@mail.gmail.com>
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On Thu, Jan 16, 2014 at 09:15:17AM -0800, Olof Johansson wrote :
> "for SDIO slots" is somewhat misleading; nearly all controllers only
> do one slot/device per controller. The designware controller can do
> multiple slots, and that adds a bit of driver and binding complexity
> for something that seemingly not a single vendor has actually
> implemented.
>
> So we can likely assume to keep these reset/power/clock lines per host
> controller, no need to add a slot construct.
>
Actually, the atmel chips have two slots per controller so it would
probably be better to think about that now.
--
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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From: alexandre.belloni@free-electrons.com (Alexandre Belloni)
To: linux-arm-kernel@lists.infradead.org
Subject: How to support SDIO wifi/bt in DT
Date: Fri, 17 Jan 2014 10:02:14 +0100 [thread overview]
Message-ID: <20140117090214.GA2348@piout.net> (raw)
In-Reply-To: <CAOesGMgzi5Buduo2pd0PP8CvKVir69yZ-jjX0Gbda871GiD8rg@mail.gmail.com>
On Thu, Jan 16, 2014 at 09:15:17AM -0800, Olof Johansson wrote :
> "for SDIO slots" is somewhat misleading; nearly all controllers only
> do one slot/device per controller. The designware controller can do
> multiple slots, and that adds a bit of driver and binding complexity
> for something that seemingly not a single vendor has actually
> implemented.
>
> So we can likely assume to keep these reset/power/clock lines per host
> controller, no need to add a slot construct.
>
Actually, the atmel chips have two slots per controller so it would
probably be better to think about that now.
--
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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next prev parent reply other threads:[~2014-01-17 9:02 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-16 13:36 How to support SDIO wifi/bt in DT Russell King - ARM Linux
2014-01-16 13:51 ` Chen-Yu Tsai
2014-01-16 14:02 ` Arnd Bergmann
2014-01-16 17:15 ` Olof Johansson
2014-01-16 17:15 ` Olof Johansson
2014-01-16 19:58 ` Russell King - ARM Linux
2014-01-16 19:58 ` Russell King - ARM Linux
2014-01-16 20:00 ` Olof Johansson
2014-01-16 20:00 ` Olof Johansson
2014-01-16 20:03 ` Russell King - ARM Linux
2014-01-16 20:03 ` Russell King - ARM Linux
2014-01-17 9:39 ` Alexandre Belloni
2014-01-17 9:39 ` Alexandre Belloni
2014-01-17 10:06 ` Chen-Yu Tsai
2014-01-17 10:06 ` Chen-Yu Tsai
2014-01-17 10:14 ` Alexandre Belloni
2014-01-17 10:14 ` Alexandre Belloni
2014-01-17 10:44 ` Andrew Lunn
2014-01-17 10:44 ` Andrew Lunn
2014-02-05 17:11 ` Mark Brown
2014-02-05 17:11 ` Mark Brown
2014-01-16 21:46 ` Arnd Bergmann
2014-01-16 21:46 ` Arnd Bergmann
2014-01-16 21:52 ` Olof Johansson
2014-01-16 21:52 ` Olof Johansson
2014-01-16 22:14 ` Marcel Holtmann
2014-01-16 22:14 ` Marcel Holtmann
2014-01-17 3:08 ` Nicolas Pitre
2014-01-17 3:08 ` Nicolas Pitre
2014-01-17 14:47 ` Arnd Bergmann
2014-01-17 14:47 ` Arnd Bergmann
[not found] ` <alpine.LFD.2.10.1401162204560.28907-fMhRO7WWcppj+hNMo8g0rg@public.gmane.org>
2014-01-17 15:14 ` Rob Herring
2014-01-17 15:14 ` Rob Herring
2014-01-17 16:58 ` Nicolas Pitre
2014-01-17 16:58 ` Nicolas Pitre
2014-01-19 19:29 ` Olof Johansson
2014-01-19 19:29 ` Olof Johansson
2014-01-19 20:28 ` Arnd Bergmann
2014-01-19 20:28 ` Arnd Bergmann
2014-01-19 23:26 ` Olof Johansson
2014-01-19 23:26 ` Olof Johansson
2014-01-19 23:09 ` Alexandre Belloni
2014-01-19 23:09 ` Alexandre Belloni
2014-01-19 23:30 ` Olof Johansson
2014-01-19 23:30 ` Olof Johansson
2014-01-20 3:57 ` Olof Johansson
2014-01-20 3:57 ` Olof Johansson
2014-01-17 9:02 ` Alexandre Belloni [this message]
2014-01-17 9:02 ` Alexandre Belloni
2014-01-17 9:38 ` Nicolas Ferre
2014-01-17 9:38 ` Nicolas Ferre
2014-01-16 14:08 ` Alexandre Belloni
2014-01-16 14:34 ` Russell King - ARM Linux
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