From: Jochen Friedrich <jochen@scram•de>
To: Wolfram Sang <w.sang@pengutronix•de>
Cc: linuxppc-dev list <linuxppc-dev@ozlabs•org>, i2c@lm-sensors•org
Subject: Re: [i2c] platform_data when using of?
Date: Wed, 23 Apr 2008 20:20:50 +0200 [thread overview]
Message-ID: <480F7E02.4020400@scram.de> (raw)
In-Reply-To: <20080423164523.GA4190@pengutronix.de>
Hi Wolfram,
> Hello,
>
> I finally could get the work started with I2C on a MPC8260-based
> platform. I applied Jochen's series on top of 2.6.25 and it seems I
> could get the i2c-cpm and the rtc-rs5c372 driver working (except that it
> doesn't autoload as a module, but I think this is my fault somewhere).
> I have not checked all yet, but at least some reasonable things do happen.
>
> I now wanted to test the latest at24-driver on top of that and stumbled
> over the fact, that I can't directly add platform_data to the dts-file.
> (As at24 shall be a generic driver, data about the eeprom type needs to
> be provided.) If I understood of correctly, I need to create another
> child node and put all necessary data in there (what also means one
> cannot use the predefined macros for known chips in at24.h). After that
> I use of_get_property and collect the data.
>
> So, at the end, every driver using platform_data has to cope with two
> mechanisms to get the desired data? This sounds questionable to me, but
> maybe I just got something wrong as this is my first contact with of.
>
> Kind regards,
>
> Wolfram
You should probably send this question to the Powerpc list (added to cc)
Thanks,
Jochen
parent reply other threads:[~2008-04-23 18:19 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <20080423164523.GA4190@pengutronix.de>]
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