From: Sebastian Hesselbarth <sebastian.hesselbarth-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>
Cc: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>,
Jason Cooper <jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org>,
Andrew Lunn <andrew-g2DYL2Zd6BY@public.gmane.org>,
Gregory Clement
<gregory.clement-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
Gabriel Dobato <dobatog-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH v3 1/4] i2c: mux-pinctrl: Rework to honor disabled child nodes
Date: Sun, 22 Mar 2015 14:03:56 +0100 [thread overview]
Message-ID: <550EBDBC.9000903@gmail.com> (raw)
In-Reply-To: <20150321210028.GA1078@katana>
On 21.03.2015 22:00, Wolfram Sang wrote:
>>> I guess what you want to have is that i2c_add_adapter() is not called
>>> for the disabled case, right?
>>
>> I think that makes sense.
>
> But maybe we should just start simple and keep calling i2c_add_adapter()
> for the disabled case. We will just skip probing devices on the bus.
> Would that help the issue you were originally trying to solve?
It is not about probing devices on the mux sub-busses, I'd expect no
devices on the optional sub-busses in DT on boards where those pins
are not used as i2c.
The idea was to hide those busses completely in particular from
userspace on boards where they'll never be available.
If modifying i2c-mux-pinctrl to respect the sub-bus status property is
such a big issue, I'd rather leave the driver as is and expose all
sub-busses to userspace.
Sebastian
next prev parent reply other threads:[~2015-03-22 13:03 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-17 18:52 [PATCH 0/8] Add proper support for Compulab CM-A510/SBC-A510 Sebastian Hesselbarth
2015-02-17 18:52 ` [PATCH 1/8] i2c: mux-pinctrl: Rework to honor disabled child nodes Sebastian Hesselbarth
[not found] ` <1424199129-22099-2-git-send-email-sebastian.hesselbarth-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-02-17 20:46 ` Stephen Warren
[not found] ` <54E3A8A7.8080703-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2015-02-17 21:08 ` Sebastian Hesselbarth
2015-02-17 21:15 ` Stephen Warren
2015-02-17 21:19 ` Sebastian Hesselbarth
2015-02-26 21:46 ` Stephen Warren
2015-02-17 18:52 ` [PATCH 2/8] devicetree: vendor-prefixes: Add CompuLab to known vendors Sebastian Hesselbarth
2015-02-17 19:37 ` Rob Herring
2015-02-17 18:52 ` [PATCH 7/8] ARM: dts: dove: Add internal i2c multiplexer node Sebastian Hesselbarth
[not found] ` <1424199129-22099-8-git-send-email-sebastian.hesselbarth-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-02-23 15:07 ` Gregory CLEMENT
[not found] ` <1424199129-22099-1-git-send-email-sebastian.hesselbarth-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-02-26 17:55 ` [PATCH 0/8] Add proper support for Compulab CM-A510/SBC-A510 Gregory CLEMENT
2015-02-26 19:39 ` Sebastian Hesselbarth
2015-02-26 20:01 ` Stephen Warren
2015-02-26 20:35 ` Sebastian Hesselbarth
2015-02-27 12:24 ` [PATCH v2 0/4] " Sebastian Hesselbarth
[not found] ` <1425039885-5137-1-git-send-email-sebastian.hesselbarth-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-02-27 12:24 ` [PATCH v2 1/4] i2c: mux-pinctrl: Rework to honor disabled child nodes Sebastian Hesselbarth
[not found] ` <1425039885-5137-2-git-send-email-sebastian.hesselbarth-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-03-02 20:01 ` Stephen Warren
[not found] ` <54F4C185.9080808-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2015-03-04 9:10 ` Sebastian Hesselbarth
2015-03-09 12:21 ` [PATCH v3 " Sebastian Hesselbarth
[not found] ` <1425903665-19343-1-git-send-email-sebastian.hesselbarth-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-03-10 16:28 ` Stephen Warren
[not found] ` <54FF1BAA.3060409-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2015-03-16 20:15 ` Sebastian Hesselbarth
2015-03-18 12:30 ` Wolfram Sang
2015-03-18 13:23 ` Sebastian Hesselbarth
2015-03-18 14:00 ` Wolfram Sang
2015-03-18 23:10 ` Sebastian Hesselbarth
[not found] ` <550A05E5.3050100-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-03-19 10:09 ` Wolfram Sang
2015-03-19 10:48 ` Wolfram Sang
2015-03-19 15:47 ` Stephen Warren
[not found] ` <550AEF9D.6090307-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2015-03-19 16:02 ` Wolfram Sang
2015-03-19 16:49 ` Stephen Warren
2015-03-19 20:52 ` Sebastian Hesselbarth
2015-03-20 10:19 ` Wolfram Sang
2015-03-21 21:00 ` Wolfram Sang
2015-03-22 13:03 ` Sebastian Hesselbarth [this message]
[not found] ` <550EBDBC.9000903-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-03-23 18:32 ` Wolfram Sang
2015-03-27 21:08 ` Sebastian Hesselbarth
[not found] ` <5515C6B6.7080903-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-04-03 18:17 ` Wolfram Sang
2015-02-27 12:24 ` [PATCH v2 2/4] devicetree: vendor-prefixes: Add CompuLab to known vendors Sebastian Hesselbarth
2015-02-27 12:24 ` [PATCH v2 3/4] ARM: dts: dove: Add internal i2c multiplexer node Sebastian Hesselbarth
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