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From: Jochen Friedrich <jochen-NIgtFMG+Po8@public.gmane.org>
To: Baurzhan Ismagulov <ibr-Y2X99Y6vBNTR7s880joybQ@public.gmane.org>
Cc: linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: status of i2c-cpm and ds2482
Date: Fri, 08 Jan 2010 13:36:31 +0100	[thread overview]
Message-ID: <4B4726CF.9020605@scram.de> (raw)
In-Reply-To: <20100108121723.GD4004-Y2X99Y6vBNTR7s880joybQ@public.gmane.org>

Hi Baurzhan,

> Oh, that's an interesting point. No, it isn't present, only i2c. How did
> it work in 2.6.25.7? I'd also appreciate pointers about that, if there
> are any.

It was probably probed by some userspace tool. This has been turned off as probing i2c might be 
problematic on Soc boards. See:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0a346dacee18ff69f6162d9860d723a058f47321

You could try to add the property "linux,i2c-class=1" to the i2c controller in your dts to see if 
this commit is the cause of difference.

> Currently I'm trying to understand why the new i2c infrastructure
> doesn't call ds2482_probe, which creates the w1_bus_master1 directory.
> Other ideas also welcome.

You should definitely add your ds2482 to the device tree so it is auto loaded by the i2c subsystem.

Thanks,
Jochen

  parent reply	other threads:[~2010-01-08 12:36 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-01-08  2:02 status of i2c-cpm and ds2482 Baurzhan Ismagulov
     [not found] ` <20100108020253.GJ3388-Y2X99Y6vBNTR7s880joybQ@public.gmane.org>
2010-01-08 11:25   ` Jochen Friedrich
     [not found]     ` <4B471647.8050806-NIgtFMG+Po8@public.gmane.org>
2010-01-08 12:17       ` Baurzhan Ismagulov
     [not found]         ` <20100108121723.GD4004-Y2X99Y6vBNTR7s880joybQ@public.gmane.org>
2010-01-08 12:36           ` Jochen Friedrich [this message]
     [not found]             ` <4B4726CF.9020605-NIgtFMG+Po8@public.gmane.org>
2010-01-08 13:43               ` Baurzhan Ismagulov
2010-01-08 12:52           ` Jean Delvare
     [not found]             ` <20100108135222.49d7b834-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2010-01-08 14:01               ` Baurzhan Ismagulov
     [not found]                 ` <20100108140111.GF4004-Y2X99Y6vBNTR7s880joybQ@public.gmane.org>
2010-01-08 14:06                   ` Jochen Friedrich
     [not found]                     ` <4B473BCE.8060803-NIgtFMG+Po8@public.gmane.org>
2010-01-08 23:19                       ` Baurzhan Ismagulov
     [not found]                         ` <20100108231942.GA3699-Y2X99Y6vBNTR7s880joybQ@public.gmane.org>
2010-01-09  8:12                           ` Jean Delvare
2010-01-08 14:11                   ` Jochen Friedrich
2010-01-08 17:54                   ` Jean Delvare

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