From: Peter Hurley <peter-WaGBZJeGNqdsbIuE7sb01tBPR1lH4CV8@public.gmane.org>
To: Doug Anderson <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>,
Russell King - ARM Linux
<linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>
Cc: Ulf Hansson <ulf.hansson-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Jaehoon Chung
<jh80.chung-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>,
Shawn Lin <shawn.lin-TNX95d0MmH7DzftRWevZcw@public.gmane.org>,
Adrian Hunter
<adrian.hunter-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Stefan Agner <stefan-XLVq0VzYD2Y@public.gmane.org>,
"linux-mmc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-mmc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Brian Norris
<computersforpeace-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Dmitry Torokhov
<dmitry.torokhov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Heiko Stuebner <heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org>,
Jisheng Zhang <jszhang-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>,
"open list:ARM/Rockchip SoC..."
<linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
devicetree-spec-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Venu Byravarasu
<vbyravarasu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
Lars-Peter Clausen <lars-Qo5EllUWu/uELgA04lAiVw@public.gmane.org>,
Jon Hunter <jonathanh-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
"devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Pawel Moll <p>
Subject: Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering w/ device tree
Date: Fri, 29 Apr 2016 16:58:12 -0700 [thread overview]
Message-ID: <5723F514.4@hurleysoftware.com> (raw)
In-Reply-To: <CAD=FV=U5jnJJ3v=nFGFecoKB5KGv1ufC+aKbHx2iCqBTWpDTww-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On 04/29/2016 04:01 PM, Doug Anderson wrote:
> * serial allows numbering devices by alias.
Which is in fact a total nightmare.
While stable device order is mandatory in serial because of
console command line parameters and existing userspace expectations,
it is the number one barrier to providing a shared ttyS namespace
for mixed uart platforms.
Stable device order has a very real (and often unforeseen) maintenance
burden.
For example, I noticed these patches are strictly for DT.
I'm assuming that's because guaranteeing stable device order for
mmc in general is more difficult; eg., by performing minimal scan
serially and more expensive portion of the probe async.
Regards,
Peter Hurley
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next prev parent reply other threads:[~2016-04-29 23:58 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-29 17:32 [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering w/ device tree Douglas Anderson
[not found] ` <1461951139-6109-1-git-send-email-dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
2016-04-29 17:32 ` [PATCH v2 1/4] Documentation: mmc: Document mmc aliases Douglas Anderson
2016-04-29 17:32 ` [PATCH v2 2/4] mmc: read mmc alias from device tree Douglas Anderson
2016-04-29 17:32 ` [PATCH v2 3/4] mmc: use SD/MMC host ID for block device name ID Douglas Anderson
2016-04-29 18:12 ` [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering w/ device tree Rob Herring
[not found] ` <CAL_JsqKOADU1hyLj+3cHjTJ7wgkOi-z-iWvFD3Bx5dvB12j+KQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-04-29 19:31 ` Doug Anderson
[not found] ` <CAD=FV=XFZ+4o_QyOdkNZyZ6ZmyXNH1Fbn458oeAxAMLOB=fLkg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-04-29 19:50 ` Russell King - ARM Linux
[not found] ` <20160429195007.GX19428-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2016-04-29 20:02 ` Doug Anderson
2016-04-29 18:12 ` Russell King - ARM Linux
[not found] ` <20160429181248.GW19428-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2016-04-29 19:43 ` Doug Anderson
2016-04-29 19:57 ` Russell King - ARM Linux
[not found] ` <20160429195741.GY19428-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2016-04-29 20:04 ` Doug Anderson
2016-04-29 21:13 ` Russell King - ARM Linux
[not found] ` <20160429211328.GZ19428-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2016-04-29 21:17 ` Doug Anderson
2016-04-29 21:29 ` Russell King - ARM Linux
[not found] ` <20160429212920.GA19428-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2016-04-29 21:39 ` Doug Anderson
2016-04-29 21:50 ` Russell King - ARM Linux
2016-04-29 21:56 ` Doug Anderson
2016-04-29 22:16 ` Russell King - ARM Linux
2016-04-29 22:22 ` Doug Anderson
[not found] ` <CAD=FV=WzgGFzzpeYAPrOpMS684_G=XRoSRjTegK-vre=fX=kpw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-04-29 22:44 ` Russell King - ARM Linux
2016-04-29 23:01 ` Doug Anderson
[not found] ` <CAD=FV=U5jnJJ3v=nFGFecoKB5KGv1ufC+aKbHx2iCqBTWpDTww-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-04-29 23:58 ` Peter Hurley [this message]
[not found] ` <CAD=FV=V_YyfBOSs7BLkyhv=_5HBmf3djUWACbL6d-bwnrueDjA@mail.gmail.com>
[not found] ` <CAD=FV=V_YyfBOSs7BLkyhv=_5HBmf3djUWACbL6d-bwnrueDjA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-04-30 0:31 ` Peter Hurley
2016-04-30 2:29 ` Doug Anderson
[not found] ` <5723FCE3.9070308-WaGBZJeGNqdsbIuE7sb01tBPR1lH4CV8@public.gmane.org>
2016-04-30 8:38 ` Russell King - ARM Linux
2016-04-30 13:23 ` Rob Herring
2016-04-29 22:42 ` Javier Martinez Canillas
2016-04-30 10:48 ` Russell King - ARM Linux
[not found] ` <20160430104832.GJ19428-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2016-05-03 19:17 ` Trent Piepho
2016-05-04 7:18 ` Pavel Machek
2016-05-04 12:25 ` Rob Herring
2016-05-04 12:46 ` Pavel Machek
2016-04-29 17:32 ` [PATCH v2 4/4] ARM: dts: rockchip: Add mmc aliases for rk3288 platform Douglas Anderson
2019-03-05 12:39 ` [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering w/ device tree Måns Rullgård
2019-03-15 21:52 ` Tim Harvey
[not found] ` <CAJ+vNU1PxK-B63Dc3AgzYb9POyxxoF-xPOWBEpxJ+3eVNK8xqw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-03-15 23:00 ` Marek Vasut
2019-03-15 23:13 ` Tim Harvey
2019-03-15 23:23 ` Doug Anderson
[not found] ` <yw1xftrn2em9.fsf@mansr.com>
2019-03-16 12:33 ` Marek Vasut
2019-03-16 15:39 ` Russell King - ARM Linux admin
2019-03-17 15:05 ` Stefan Agner
2019-03-17 15:43 ` Russell King - ARM Linux admin
2019-03-17 15:50 ` Marek Vasut
2019-03-17 16:48 ` Måns Rullgård
2019-03-17 16:59 ` Russell King - ARM Linux admin
2019-03-27 17:37 ` Tim Harvey
2019-03-27 20:54 ` Russell King - ARM Linux admin
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