From: Sergei Ianovich <ynvich@gmail.com>
To: Mark Brown <broonie@kernel.org>, Akinobu Mita <akinobu.mita@gmail.com>
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>,
rtc-linux@googlegroups.com,
"open list:OPEN FIRMWARE AND..." <devicetree@vger.kernel.org>,
Alessandro Zummo <a.zummo@towertech.it>
Subject: [rtc-linux] Re: [PATCH 0/4] support control with using GPIO lines
Date: Wed, 27 Apr 2016 17:03:19 +0300 [thread overview]
Message-ID: <1461765799.2957.4.camel@gmail.com> (raw)
In-Reply-To: <20160427135012.GP3217@sirena.org.uk>
On Wed, 2016-04-27 at 14:50 +0100, Mark Brown wrote:
> On Wed, Apr 27, 2016 at 04:53:18AM +0900, Akinobu Mita wrote:
>=20
> >=20
> > For the read data transfer, the address/command byte is sent on the
> > rising edge of the first eight SCLK cycles and the read data byte
> > is
> > transmitted on the falling edge of the next eight SCL cycles.
> That's an innovative and exciting hardware design :/=C2=A0=C2=A0Definitel=
y
> doesn't
> seem to correspond too closely to any SPI mode I can think of.
DS1302 uses the standard MicroWire half-duplex transfer timing. The
timing can be handled by eg. PXA270 built-in SPI controller with proper
configuration.
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next prev parent reply other threads:[~2016-04-27 14:03 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-10 14:59 [rtc-linux] [PATCH 0/4] support control with using GPIO lines Akinobu Mita
2016-04-10 14:59 ` [rtc-linux] [PATCH 1/4] rtc: ds1302: fix error check in set_time Akinobu Mita
2016-04-10 15:17 ` [rtc-linux] " Alexandre Belloni
2016-04-10 14:59 ` [rtc-linux] [PATCH 2/4] rtc: ds1302: fix write value for day of week register Akinobu Mita
2016-04-10 15:17 ` [rtc-linux] " Alexandre Belloni
2016-04-10 14:59 ` [rtc-linux] [PATCH 3/4] rtc: ds1302: add register access abstraction layer Akinobu Mita
2016-04-10 14:59 ` [rtc-linux] [PATCH 4/4] rtc: ds1302: support control with using GPIO lines Akinobu Mita
2016-04-10 15:12 ` [rtc-linux] Re: [PATCH 0/4] " Alexandre Belloni
2016-04-10 15:23 ` Sergei Ianovich
2016-04-10 15:38 ` Alexandre Belloni
2016-04-12 1:25 ` Mark Brown
2016-04-26 19:53 ` Akinobu Mita
2016-04-27 13:50 ` Mark Brown
2016-04-27 14:03 ` Sergei Ianovich [this message]
2016-04-29 5:40 ` Akinobu Mita
2016-06-26 0:55 ` Alexandre Belloni
2016-06-27 10:23 ` Akinobu Mita
2016-04-11 19:46 ` Rob Herring
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