Hi Geert and Alexandre,
Thanks for the feedback.
> -----Original Message-----
> From: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
> Sent: 21 November 2018 10:35
> To: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
> Cc: Biju Das <biju.das@xxxxxxxxxxxxxx>; Alessandro Zummo
> <a.zummo@xxxxxxxxxxxx>; linux-rtc@xxxxxxxxxxxxxxx; Simon Horman
> <horms@xxxxxxxxxxxx>; Geert Uytterhoeven <geert+renesas@xxxxxxxxx>;
> Chris Paterson <Chris.Paterson2@xxxxxxxxxxx>; Fabrizio Castro
> <fabrizio.castro@xxxxxxxxxxxxxx>; Linux-Renesas <linux-renesas-
> soc@xxxxxxxxxxxxxxx>
> Subject: Re: [PATCH 2/4] rtc: pcf85363: Add support for NXP pcf85263 rtc
>
> On 21/11/2018 11:23:08+0100, Geert Uytterhoeven wrote:
> > Hi Biju,
> >
> > On Mon, Nov 19, 2018 at 12:23 PM Biju Das <biju.das@xxxxxxxxxxxxxx>
> wrote:
> > > Add support for NXP pcf85263 real-time clock. pcf85263 rtc is
> > > compatible with pcf85363,except that pcf85363 has additional 64 bytes of
> RAM.
> > >
> > > 1 byte of nvmem is supported and exposed in sysfs (# is the instance
> > > number,starting with 0): /sys/bus/nvmem/devices/pcf85263-#/nvmem
> > >
> > > Signed-off-by: Biju Das <biju.das@xxxxxxxxxxxxxx>
> >
> > Thanks for your patch!
> >
> > > --- a/drivers/rtc/rtc-pcf85363.c
> > > +++ b/drivers/rtc/rtc-pcf85363.c
> > > @@ -311,7 +311,30 @@ static int pcf85363_nvram_write(void *priv,
> unsigned int offset, void *val,
> > > val, bytes); }
> > >
> > > -static const struct regmap_config regmap_config = {
> > > +static int pcf85263_nvram_read(void *priv, unsigned int offset, void
> *val,
> > > + size_t bytes) {
> > > + struct pcf85363 *pcf85363 = priv;
> > > +
> > > + return regmap_read(pcf85363->regmap, CTRL_RAMBYTE, val); }
> >
> > AFAIU without reading the datasheet, the pcf85363 also has this
> > RAMBYTE register. Would it make sense to expose the contents on both
> parts?
>
> Yes it has. This series allows calling rtc_nvmem_register() multiple times from
> the same driver:
>
> http://patchwork.ozlabs.org/project/rtc-linux/list/?series=75212
Will check and send v2,
1) For pcf85363, calling rtc_nvmem_register twice (1 with 64 bytes and another with 1 byte)
2) For pcf85263, calling rtc_nvmem_register ( with 1 byte)
Regards,
Biju
Renesas Electronics Europe Ltd, Dukes Meadow, Millboard Road, Bourne End, Buckinghamshire, SL8 5FH, UK. Registered in England & Wales under Registered No. 04586709.
