Messages in this thread | | | Date | Mon, 19 May 2008 01:10:34 +0900 (JST) | Subject | Re: [PATCH] RTC: M41T80: Century Bit support | From | Atsushi Nemoto <> |
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On Sat, 17 May 2008 20:16:20 +0100 (BST), "Maciej W. Rozycki" <macro@linux-mips.org> wrote: > > How about doing like this? > > > > 1. If CEB was 0, keep current behavior. (does not touch CB bit) > > > > 2. If CEB was 1, detect polarity of CB bit on get_datetime, and set or > > clear CB bit on set_datetime based on the polarity. > > That's what I did initially as it is as obvious as you can get. But as I > noted, CFE, the firmware used with the SWARM, does not set CEB even though > it takes CB into account. The approach is not useful therefore at least > for one major user of the device.
Oh I had missed that the firmware does not set CEB. Hmm...
> Of course CFE is BSD-licensed and can be changed too, but based on my > experience with how serious bugs are handled, I would not count on getting > such a minor change integrated into the official sources. > > > Please look at "c_polarity" variable in rtc-pcf8563.c driver. > > Hmm, not terribly useful as few of us if anybody live back in the 20th > century. ;-) I think let's scrap the patch in this case and let our > grandchildren solve the problem -- a proposal has been published and can > be reused as needed.
OK for me. Lets hear how our grandchildren complain on this fault. :)
--- Atsushi Nemoto
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