From: Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
To: zhangfei gao <zhangfei.gao-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Linus Walleij
<linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>,
Zhangfei Gao
<zhangfei.gao-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Baruch Siach <baruch-NswTu9S1W3P6gbPvEgmw2w@public.gmane.org>,
"linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
Haojian Zhuang
<haojian.zhuang-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: Re: getting rid of subsys_initcall usage? (was: Re: [PATCH RESEND] i2c: designware: use module_platform_driver)
Date: Fri, 30 Aug 2013 01:27:13 -0700 [thread overview]
Message-ID: <20130830082712.GT7656@atomide.com> (raw)
In-Reply-To: <CAMj5BkiDExikXi3JcVhO7RN8_82eGYhq3i6oPf5Wbipy=N+iHQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
* zhangfei gao <zhangfei.gao-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> [130829 23:36]:
> What about concerns from Wolfram:
> " Other people might be
> depending on subsys_initcall to get I2C active before they want to
> activate, say, PMICs. So, I fear regressions, since deferred probing
> might not be available in the needed places to avoid these regressions."
There should not be any reason to get a PMIC activated
early on. The system should be booting already at that point,
and the PMIC related init can be done later on.
> Is it too late using module_init for PMIC?
You can probably do it as a fix early on during the -rc
cycle too. Of course it needs to be verified to work first :)
> Besides, the deferred probing still there if depend on late registered
> pin control driver.
At least for omaps we have things working just fine with
pinctrl-single and a PMIC on I2C controller.
Regards,
Tony
next prev parent reply other threads:[~2013-08-30 8:27 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-20 8:32 [PATCH RESEND] i2c: designware: use module_platform_driver Zhangfei Gao
[not found] ` <1376987548-12366-1-git-send-email-zhangfei.gao-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2013-08-28 9:57 ` getting rid of subsys_initcall usage? (was: Re: [PATCH RESEND] i2c: designware: use module_platform_driver) Wolfram Sang
2013-08-29 8:58 ` Linus Walleij
[not found] ` <CACRpkdb1p1=3a0PM+r2ZrMN+ECv5BAZFdv2omDK5npaer4ddcw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-08-29 10:55 ` zhangfei gao
[not found] ` <CAMj5BkhQkwb+T9VepN7UrWNRSgtv=Dw-Sa-gv0orOANo55iqNw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-08-29 17:11 ` Linus Walleij
2013-08-30 5:48 ` Tony Lindgren
[not found] ` <20130830054858.GR7656-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2013-08-30 6:29 ` zhangfei gao
[not found] ` <CAMj5BkiDExikXi3JcVhO7RN8_82eGYhq3i6oPf5Wbipy=N+iHQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-08-30 8:27 ` Tony Lindgren [this message]
[not found] ` <20130830082712.GT7656-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2013-09-12 1:12 ` zhangfei gao
[not found] ` <CAMj5BkgqBCh0316NmoP_XMXvJTVQxxvUvs63wZfS_TvNLdqAfg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-10-08 2:46 ` zhangfei gao
[not found] ` <CAMj5Bki+BS=3sWCRdrDOEKpt6Bj+4vm0zKCJ4YBAudcqbAZySw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-10-08 5:26 ` Wolfram Sang
2013-10-08 20:53 ` Wolfram Sang
2013-10-08 22:10 ` Tony Lindgren
[not found] ` <20131008221056.GW8313-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2013-10-17 23:34 ` Tony Lindgren
2013-10-18 7:32 ` Wolfram Sang
2013-10-09 0:58 ` getting rid of subsys_initcall usage? zhangfei
2013-08-30 1:51 ` zhangfei
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