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Date: Tue, 17 Sep 2019 08:11:05 +0000
From: Biwen Li <biwen.li@....com>
To: 'Rob Herring' <robh+dt@...nel.org>
CC: Alessandro Zummo <a.zummo@...ertech.it>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
Mark Rutland <mark.rutland@....com>,
Leo Li <leoyang.li@....com>,
"open list:REAL TIME CLOCK (RTC) SUBSYSTEM"
<linux-rtc@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
Martin Fuzzey <mfuzzey@...keon.com>
Subject: RE: [EXT] Re: [v4,1/2] dt-bindings: rtc: pcf85263/pcf85363: add some
properties
>
> Caution: EXT Email
>
> On Tue, Sep 10, 2019 at 5:53 AM Biwen Li <biwen.li@....com> wrote:
> >
> > Add some properties for pcf85263/pcf85363 as follows:
> > - nxp,rtc-interrupt-type: integer type
> > - nxp,rtc-interrupt-output-pin: string type
> > - quartz-load-femtofarads: integer type
> > - nxp,quartz-drive-strength: integer type
> > - nxp,quartz-low-jitter: bool type
> > - wakeup-source: bool type
> >
> > Signed-off-by: Martin Fuzzey <mfuzzey@...keon.com>
> > Signed-off-by: Biwen Li <biwen.li@....com>
> > ---
> > Change in v4:
> > - Drop robust defines in include/dt-bindings/rtc/pcf85363.h
> > - Add nxp,rtc-interrupt-type property
> > - Replace interrupt-output-pin with
> > nxp,rtc-interrupt-output-pin
> >
> > Change in v3:
> > - None
> >
> > Change in v2:
> > - Replace properties name
> > quartz-load-capacitance -> quartz-load-femtofarads
> > quartz-drive-strength -> nxp,quartz-drive-strength
> > quartz-low-jitter -> nxp,quartz-low-jitter
> > - Replace drive strength name
> > PCF85263_QUARTZDRIVE_NORMAL ->
> PCF85263_QUARTZDRIVE_100ko
> > PCF85263_QUARTZDRIVE_LOW ->
> PCF85263_QUARTZDRIVE_60ko
> > PCF85263_QUARTZDRIVE_HIGH ->
> PCF85263_QUARTZDRIVE_500ko
> > - Set default interrupt-output-pin as "INTA"
> >
> > .../devicetree/bindings/rtc/pcf85363.txt | 44 ++++++++++++++++++-
> > include/dt-bindings/rtc/pcf85363.h | 14 ++++++
> > 2 files changed, 57 insertions(+), 1 deletion(-) create mode 100644
> > include/dt-bindings/rtc/pcf85363.h
> >
> > diff --git a/Documentation/devicetree/bindings/rtc/pcf85363.txt
> > b/Documentation/devicetree/bindings/rtc/pcf85363.txt
> > index 94adc1cf93d9..fc1579463657 100644
> > --- a/Documentation/devicetree/bindings/rtc/pcf85363.txt
> > +++ b/Documentation/devicetree/bindings/rtc/pcf85363.txt
> > @@ -8,10 +8,52 @@ Required properties:
> > Optional properties:
> > - interrupts: IRQ line for the RTC (not implemented).
> >
> > +- nxp,rtc-interrupt-type: integer property, represent the interrupt's
> > + type. Valid values are
> > + INT_PIE(periodic interrupt enable),
> > + INT_OIE(offset correction interrupt enable),
> > + INT_A1IE(alarm1 interrupt enable),
> > + INT_A2IE(alarm2 interrupt enable),
> > + INT_TSRIE(timestamp register interrupt enable)
> > + INT_BSIE(battery switch interrupt enable),
> > + INT_WDIE(WatchDog interrupt enable,and
> > + compose these values such as: INT_A1IE | INT_A2IE,
> > + but currently only support INT_A1IE, default value is INT_A1IE.
> > + The property and property nxp,rtc-interrupt-output-pin
> > + work together to generate some interrupts on some pins.
> > +
> > +- nxp,rtc-interrupt-output-pin: The interrupt output pin must be
> > + "INTA" or "INTB", default value is "INTA". The property and
> > +property
> > + nxp,rtc-interrupt-type work together to generate some interrupts on
> > + some pins.
> > +
> > +- quartz-load-femtofarads: The internal capacitor to select for the
> > +quartz,
> > + expressed in femto Farad (fF). Valid values are 6000, 7000 and 12500.
> > + Default value is 12500fF.
> > +
> > +- nxp,quartz-drive-strength: Drive strength for the quartz,
> > + expressed in kilo ohms (kOhm) Valid values are 60, 100 and 500.
> > + Default value is 100kOhm.
>
> This needs a unit as defined in property-units.txt.
Ok, got it, I will replace it with nxp,quartz-drive-strength-kohms in v5.
I added a new unit 'kohms' to property-units.txt,
please review the patch http://patchwork.ozlabs.org/patch/1163214/ ,
thanks.
Best Regards,
Biwen Li
>
> > +
> > +- nxp,quartz-low-jitter: Boolean property, if present enables low
> > +jitter mode
> > + which reduces jitter at the cost of increased power consumption.
> > +
> > +- wakeup-source: Boolean property, Please refer to
> > + Documentation/devicetree/bindings/power/wakeup-source.txt
> > +
> > Example:
> >
> > pcf85363: pcf85363@51 {
> > compatible = "nxp,pcf85363";
> > reg = <0x51>;
> > -};
> >
> > + interrupt-parent = <&gpio1>;
> > + interrupts = <18 IRQ_TYPE_EDGE_FALLING>;
> > +
> > + wakeup-source;
> > + nxp,rtc-interrupt-output-pin = "INTA";
> > + nxp,rtc-interrupt-type = <INT_A1IE>;
> > + quartz-load-femtofarads = <12500>;
> > + nxp,quartz-drive-strength = <60>;
> > + nxp,quartz-low-jitter;
> > +};
> > diff --git a/include/dt-bindings/rtc/pcf85363.h
> > b/include/dt-bindings/rtc/pcf85363.h
> > new file mode 100644
> > index 000000000000..6340bf2da8f5
> > --- /dev/null
> > +++ b/include/dt-bindings/rtc/pcf85363.h
> > @@ -0,0 +1,14 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef
> > +_DT_BINDINGS_RTC_PCF85363_H #define
> _DT_BINDINGS_RTC_PCF85363_H
> > +
> > +/* Interrupt type */
> > +#define INT_WDIE (1 << 0)
> > +#define INT_BSIE (1 << 1)
> > +#define INT_TSRIE (1 << 2)
> > +#define INT_A2IE (1 << 3)
> > +#define INT_A1IE (1 << 4)
> > +#define INT_OIE (1 << 5)
> > +#define INT_PIE (1 << 6)
> > +
> > +#endif /* _DT_BINDINGS_RTC_PCF85363_H */
> > --
> > 2.17.1
> >
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