Hi Biju,
On Thu, Dec 6, 2018 at 1:41 PM Biju Das <biju.das@xxxxxxxxxxxxxx> wrote:
> > Subject: Re: [PATCH v3 4/4] ARM: dts: iwg23s-sbc: Enable RTC
> > On Thu, Dec 6, 2018 at 10:04 AM Biju Das <biju.das@xxxxxxxxxxxxxx> wrote:
> > > Enable NXP pcf85263 real time clock for the iWave SBC based on RZ/G1C.
> > >
> > > Signed-off-by: Biju Das <biju.das@xxxxxxxxxxxxxx>
> >
> > Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> >
> > > --- a/arch/arm/boot/dts/r8a77470-iwg23s-sbc.dts
> > > +++ b/arch/arm/boot/dts/r8a77470-iwg23s-sbc.dts
> > > @@ -84,12 +84,30 @@
> > > clock-frequency = <20000000>;
> > > };
> > >
> > > +&i2c3 {
> > > + pinctrl-0 = <&i2c3_pins>;
> > > + pinctrl-names = "default";
> > > +
> > > + status = "okay";
> > > + clock-frequency = <400000>;
> > > +
> > > + rtc@51 {
> > > + compatible = "nxp,pcf85263";
> > > + reg = <0x51>;
> >
> > You might want to enable the optional interrupt:
>
> I have enabled this but unfortunately it is generating 100000 of gpio interrupts during boot.
Oh, the DT bindings claim interrupt support hasn't been implement yet ;-)
> The reason is, by default this pin is configured as function(Power on reset/at u-boot).
> Currently there is no function available in kernel to convert a pin from function to gpio (Similar to the issue Fab is facing for display hot plug interrupt)
>
> May be we can add optional interrupt at a later stage, once we have a solution for converting pin from function to gpio.
>
> Please share your opinion on this.
IC. In that case, please postpone describing the interrupt until the issue is
fixed.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
