linux-kernel - Re: [PATCH] fix RTC_CLASS regression with PARISC

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Message-Id: <200809081632.26166.david-b@pacbell.net>
Date:	Mon, 8 Sep 2008 16:32:25 -0700
From:	David Brownell <david-b@...bell.net>
To:	James Bottomley <James.Bottomley@...senpartnership.com>
Cc:	David Miller <davem@...emloft.net>, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	linux-parisc@...r.kernel.org
Subject: Re: [PATCH] fix RTC_CLASS regression with PARISC

On Monday 08 September 2008, James Bottomley wrote:
> 
> > All the powerpc folks are doing is providing a dummy shim into the
> > RTC layer using their machine description vector, and not really using
> > the RTC layer drivers at all.
> 
> But realistically that's all we need.  Our RTC is controlled by two
> calls into firmware: a get and a set; nothing else.  We don't have the
> docs to get at the clock without the firmware calls.

True for PARISC ... but not for PowerPC.  Lots of PowerPC
system boards use off-the-shelf RTCs with more capabilities
than the machine description vector acknowledges.

- Dave

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