From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marc Dietrich Subject: Re: Re: Tegra board file deprecation schedule Date: Mon, 30 Apr 2012 11:00:28 +0200 Message-ID: <15729187.JLj8pSFBeZ@fb07-iapwap2> References: <4F9B0E7C.1060408@wwwdotorg.org> <6014194.Op4vnW6Cge@ax5200p> <4F9D94B3.4070903@wwwdotorg.org> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7Bit Return-path: In-Reply-To: <4F9D94B3.4070903-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Stephen Warren Cc: Olof Johansson , "linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Colin Cross , Thierry Reding , ARM kernel mailing list List-Id: linux-tegra@vger.kernel.org Am Sonntag, 29. April 2012, 13:21:23 schrieb Stephen Warren: > On 04/28/2012 10:09 AM, Marc Dietrich wrote: > ... > > > Some other things regarding board removal also came into my mind. First, > > is > > the sdhci order problem solved? Maybe I missed it, but it would be nice if > > we could give the internal emmc a device number of zero and the external > > reader a device number one. Currently it is oposite around and AFAIK > > device tree guaranties no special order unless you enforce it somehow. > > I think we shouldn't consider there to be an SDHCI order problem. > Relying on block devices to appear with a specific name is probably > something we shouldn't do. The fact it happened with SDHCI is pretty > unique; it doesn't for USB-attached devices, removable SDHCI devices, etc. > > Instead, you can use partition or filesystem UUIDs to name devices. I > boot with root=PARTUUID=xxxx these days, and hence never have to adjust > my command-line depending on the SDHCI probe ordering differences, and > it's work just fine for USB or other storage too. Arrr, you are right again. I tend to ignore this unhandy UUID thing, but all current distros use it. So this not not an issue. Sorry for the noice. Marc