[U-Boot] [EXT] Re: [PATCH v2 3/3] rtc: pcf2127: Fixed bug with rtc settings and getting error time
chuanhua.han at nxp.com
Sun Jun 23 10:40:15 UTC 2019
> -----Original Message-----
> From: Simon Glass <sjg at chromium.org>
> Sent: 2019年6月23日 3:10
> To: Chuanhua Han <chuanhua.han at nxp.com>
> Cc: Heiko Schocher <hs at denx.de>; U-Boot Mailing List <u-boot at lists.denx.de>;
> Biwen Li <biwen.li at nxp.com>; Lukasz Majewski <lukma at denx.de>
> Subject: [EXT] Re: [PATCH v2 3/3] rtc: pcf2127: Fixed bug with rtc settings and
> getting error time
> Caution: EXT Email
> On Fri, 24 May 2019 at 03:23, Chuanhua Han <chuanhua.han at nxp.com>
> > The previous pcf2127 RTC chip could not read and set the correct time.
> > When reading the data of internal registers, the read address was the
> > value of register plus 1. This is because this chip requires the host
> > to send a stop signal after setting the register address and before
> > reading the register data.
> > This patch sets the flag that the stop signal is needed and fixes the
> > bug of the original read and write time.
> > Signed-off-by: Biwen Li <biwen.li at nxp.com>
> > Signed-off-by: Chuanhua Han <chuanhua.han at nxp.com>
> > ---
> > Changes in v2:
> > - Split the original patch into 3 patches
> > - Add detailed description information for each patch
> > drivers/rtc/pcf2127.c | 18 ++++++++++--------
> > 1 file changed, 10 insertions(+), 8 deletions(-)
> Can you modify this to use i2c_xfer() so that separate transactions are done?
I have sent the fourth edition you see the new patchwork:
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