All of lore.kernel.org
 help / color / mirror / Atom feed
From: Jain Priyanka-B32167 <B32167@freescale.com>
To: Wolfram Sang <w.sang@pengutronix.de>
Cc: "a.zummo@towertech.it" <a.zummo@towertech.it>,
	"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
	"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
	"rtc-linux@googlegroups.com" <rtc-linux@googlegroups.com>,
	"p_gortmaker@yahoo.com" <p_gortmaker@yahoo.com>
Subject: RE: [PATCH] Add support for pt7c4338 (rtc device) in rtc-ds1307 driver
Date: Mon, 30 May 2011 04:47:26 +0000	[thread overview]
Message-ID: <470DB7CE2CD0944E9436E7ADEFC02FE316DCB8@039-SN1MPN1-002.039d.mgd.msft.net> (raw)
In-Reply-To: <20110526091020.GA2201@pengutronix.de>



> -----Original Message-----
> From: linuxppc-dev-bounces+priyanka.jain=3Dfreescale.com@lists.ozlabs.org
> [mailto:linuxppc-dev-
> bounces+priyanka.jain=3Dfreescale.com@lists.ozlabs.org] On Behalf Of
> Wolfram Sang
> Sent: Thursday, May 26, 2011 2:40 PM
> To: Jain Priyanka-B32167
> Cc: a.zummo@towertech.it; akpm@linux-foundation.org; linuxppc-
> dev@lists.ozlabs.org; rtc-linux@googlegroups.com; p_gortmaker@yahoo.com
> Subject: Re: [PATCH] Add support for pt7c4338 (rtc device) in rtc-ds1307
> driver
>=20
> On Thu, May 26, 2011 at 12:33:29PM +0530, Priyanka Jain wrote:
>=20
> > PT7C4338 chip is being manufactured by Pericom Technology Inc.
> > It is a serial real-time clock which provides:
> > 1)Low-power clock/calendar.
> > 2)Programmable square-wave output.
> > It has 56 bytes of nonvolatile RAM.
> > Its register set is same as that of rtc device: DS1307.
> >
> > Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
>=20
> So it is identical to ds1307? Then why not name your platform_device
> simply 'ds1307'?
Yes, It is possible to directly use platform device 'ds1307' in device tree=
.=20
But I have one query of how to capture the information that pericom, pt7c43=
38 device is compatible with dallas, ds1307. Can it be done in somewhere in=
 some document or some code. Actually for pt7c4338 device driver, I actuall=
y started by asking if there is any already existing rtc device driver whic=
h is compatible with pericom pt7c4338 device on mailing list and as there w=
as no answer or help then, I actually ended up writing device driver for th=
at and then on the suggestion using ds1307 device driver for this.

Thanks
Priyanka
>=20
> Regards,
>=20
>    Wolfram
>=20
> --
> Pengutronix e.K.                           | Wolfram Sang
> |
> Industrial Linux Solutions                 | http://www.pengutronix.de/
> |

  reply	other threads:[~2011-05-30  4:47 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-26  7:03 [PATCH] Add support for pt7c4338 (rtc device) in rtc-ds1307 driver Priyanka Jain
2011-05-26  9:10 ` Wolfram Sang
2011-05-30  4:47   ` Jain Priyanka-B32167 [this message]
2011-05-30  8:24     ` Wolfram Sang
2011-05-30 14:29       ` [rtc-linux] " Tabi Timur-B04825
2011-05-30 14:50         ` Wolfram Sang
2011-05-30 16:57         ` Anton Vorontsov
2011-06-03 18:03           ` Grant Likely

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=470DB7CE2CD0944E9436E7ADEFC02FE316DCB8@039-SN1MPN1-002.039d.mgd.msft.net \
    --to=b32167@freescale.com \
    --cc=a.zummo@towertech.it \
    --cc=akpm@linux-foundation.org \
    --cc=linuxppc-dev@lists.ozlabs.org \
    --cc=p_gortmaker@yahoo.com \
    --cc=rtc-linux@googlegroups.com \
    --cc=w.sang@pengutronix.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.