From: Segher Boessenkool <segher@kernel.crashing.org>
To: Wade Farnsworth <wfarnsworth@mvista.com>
Cc: linuxppc-dev <linuxppc-dev@ozlabs.org>
Subject: Re: [PATCH 2/5] Add legacy devices to mpc8641_hpcn.dts
Date: Wed, 16 May 2007 21:59:02 +0200 [thread overview]
Message-ID: <fcd8f2b3d13e3ff675886f06843d2038@kernel.crashing.org> (raw)
In-Reply-To: <1179338347.8132.200.camel@rhino>
>> Is "rtc" a standard OF device, or are we making up a
>> new thing that should be documented in booting-with-OF.txt ?
>> And is the plan to somehow use this entry in the future?
>
> It is my understanding that "rtc" is a standard OF device. Can anybody
> confirm this?
It is.
> This could be used in the platform-specific RTC code to get the ports
> from the device tree. Currently, however, I simply use RTC_PORT(x)
> from
> asm/mc146818rtc.h. Is it preferable to use the device tree here?
If you instantiate the RTC device from platform code,
and the device sits at the same address on all boards
you support, the only good thing you get from using
the device tree is that you don't have to hardcode a
number in the Linux code. Using the device tree however
the RTC device could be detected and instantiated from
more generic code, a much better situation.
Segher
next prev parent reply other threads:[~2007-05-16 19:59 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-15 16:17 [PATCH 0/5] MPC8641 HPCN fixes Wade Farnsworth
2007-05-15 16:23 ` [PATCH 1/5] Add MTD support to mpc8641_hpcn.dts Wade Farnsworth
2007-05-15 16:27 ` [PATCH 2/5] Add legacy devices " Wade Farnsworth
2007-05-16 16:37 ` Jon Loeliger
2007-05-16 17:59 ` Wade Farnsworth
2007-05-16 19:59 ` Segher Boessenkool [this message]
2007-05-16 19:55 ` Segher Boessenkool
2007-05-16 20:03 ` Sergei Shtylyov
2007-05-16 20:17 ` Wade Farnsworth
2007-05-16 23:40 ` Segher Boessenkool
2007-05-16 23:47 ` Segher Boessenkool
2007-05-17 0:11 ` Wade Farnsworth
2007-05-17 0:09 ` Wade Farnsworth
2007-05-18 16:44 ` Jon Loeliger
2007-05-21 16:04 ` Wade Farnsworth
2007-05-21 16:10 ` Jon Loeliger
2007-05-21 16:51 ` Wade Farnsworth
2007-05-16 20:29 ` Wade Farnsworth
2007-07-07 18:29 ` Sergei Shtylyov
2007-07-07 18:39 ` Arnd Bergmann
2007-07-08 13:13 ` Segher Boessenkool
2007-07-08 20:36 ` Arnd Bergmann
2007-07-08 23:42 ` Segher Boessenkool
2007-07-09 12:43 ` Sergei Shtylyov
2007-07-09 14:43 ` Segher Boessenkool
2007-07-07 18:59 ` Sergei Shtylyov
2007-07-07 19:23 ` Arnd Bergmann
2007-05-15 16:32 ` [PATCH 3/5] Support for the LPC47M192 SuperIO on the MPC8641 HPCN Wade Farnsworth
2007-05-15 16:36 ` [PATCH 4/5] Add RTC CMOS support for " Wade Farnsworth
2007-05-15 16:50 ` [PATCH 5/5] PCI fixes for the MPC8641 Rev 2.0 silicon and Rev 1.02 hardware Wade Farnsworth
2007-05-16 16:44 ` Jon Loeliger
2007-05-16 18:06 ` Wade Farnsworth
2007-05-18 6:52 ` [PATCH 5/5] PCI fixes for the MPC8641 Rev 2.0 silicon and Rev1.02 hardware Jin Zhengxiong-R64188
2007-05-21 15:59 ` Wade Farnsworth
2007-05-17 2:50 ` [PATCH 5/5] PCI fixes for the MPC8641 Rev 2.0 silicon and Rev 1.02hardware Zhang Wei-r63237
2007-05-17 16:03 ` Wade Farnsworth
2007-05-17 16:14 ` Kumar Gala
2007-05-17 16:58 ` Wade Farnsworth
2007-05-17 18:46 ` Timur Tabi
2007-05-17 18:48 ` Timur Tabi
2007-05-17 18:53 ` Scott Wood
2007-05-17 18:59 ` Timur Tabi
2007-05-17 19:16 ` Jerry Van Baren
2007-05-18 13:48 ` Matt Sealey
2007-05-17 22:34 ` Wade Farnsworth
2007-05-18 0:56 ` David Gibson
2007-05-18 3:49 ` Jerry Van Baren
2007-05-18 14:34 ` Timur Tabi
2007-05-18 15:22 ` Jerry Van Baren
2007-05-18 16:46 ` Scott Wood
2007-05-18 17:30 ` Jerry Van Baren
2007-05-18 17:39 ` Timur Tabi
2007-05-18 17:43 ` Scott Wood
2007-05-18 17:47 ` Timur Tabi
2007-05-18 17:52 ` Scott Wood
2007-05-18 17:56 ` Timur Tabi
2007-05-18 18:02 ` Scott Wood
2007-05-18 18:03 ` Jerry Van Baren
2007-05-18 18:19 ` Jon Loeliger
2007-05-18 18:23 ` Scott Wood
2007-05-18 19:05 ` Jon Loeliger
2007-05-18 19:09 ` Scott Wood
2007-05-18 18:30 ` Timur Tabi
2007-05-18 17:59 ` Jerry Van Baren
2007-05-18 10:20 ` [PATCH 5/5] PCI fixes for the MPC8641 Rev 2.0 silicon and Rev1.02hardware Zhang Wei-r63237
2007-05-21 16:01 ` Wade Farnsworth
2007-05-22 2:53 ` [PATCH 5/5] PCI fixes for the MPC8641 Rev 2.0 silicon andRev1.02hardware Zhang Wei-r63237
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