linux-kernel - Re: [v2] rtc: pcf85363/pcf85263: fix error that failed to run hwclock -w

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Message-ID: <20190821113029.GE5128@sirena.co.uk>
Date:   Wed, 21 Aug 2019 12:30:29 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc:     Li Yang <leoyang.li@....com>, nandor.han@...sala.com,
        Biwen Li <biwen.li@....com>, a.zummo@...ertech.it,
        linux-rtc@...r.kernel.org, lkml <linux-kernel@...r.kernel.org>
Subject: Re: [v2] rtc: pcf85363/pcf85263: fix error that failed to run
 hwclock -w

On Wed, Aug 21, 2019 at 01:24:13PM +0200, Alexandre Belloni wrote:
> On 21/08/2019 12:21:42+0100, Mark Brown wrote:
> > On Tue, Aug 20, 2019 at 01:33:14PM -0500, Li Yang wrote:

> > > violation check of regmap rejects such access.  According to
> > > Alexcandre, the address wrapping is essential to the functionality of

> > It's *essential*?  Will innovation never cease?

> To be clear, for some RTCs, its is the only way to accurately set the
> time.

What's the mechanism here?  It's a very strange thing to require.

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