Patchwork [v3] Add support for RTC device: pt7c4338 in rtc-ds1307.c

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Submitter Priyanka Jain
Date June 16, 2011, 4:05 a.m.
Message ID <1308197117-3586-1-git-send-email-Priyanka.Jain@freescale.com>
Download mbox | patch
Permalink /patch/100586/
State New
Headers show

Comments

Priyanka Jain - June 16, 2011, 4:05 a.m.
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>
---
 Change for v3:
	 Incorporting Timur Tabi's comments to drop Kconfig and copyright
         changes 

 Change for v2:
	 Incorporting Andrew Morton's comments to shorten patch by using
         hunk: { "pt7c4338", ds_1307 }

 Changes :
	 This patch will supersede patch:
		"RTC driver(Linux) for PT7C4338 chip"
	 Incorporting Wolfram Sang's comments to reuse ds1307 driver.

 drivers/rtc/rtc-ds1307.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
Timur Tabi - June 16, 2011, 3:38 p.m.
Priyanka Jain wrote:
> 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>

Acked-by: Timur Tabi <timur@freescale.com>
Wolfram Sang - June 16, 2011, 7:42 p.m.
On Thu, Jun 16, 2011 at 10:38:11AM -0500, Timur Tabi wrote:
> Priyanka Jain wrote:
> > 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>
> 
> Acked-by: Timur Tabi <timur@freescale.com>

Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>

Patch

diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index 4724ba3..b2005b4 100644
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -149,6 +149,7 @@  static const struct i2c_device_id ds1307_id[] = {
 	{ "ds1340", ds_1340 },
 	{ "ds3231", ds_3231 },
 	{ "m41t00", m41t00 },
+	{ "pt7c4338", ds_1307 },
 	{ "rx8025", rx_8025 },
 	{ }
 };