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From: Biwen Li <biwen.li@nxp.com>
To: 'Rob Herring' <robh+dt@kernel.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	Mark Rutland <mark.rutland@arm.com>, Leo Li <leoyang.li@nxp.com>,
	"open list:REAL TIME CLOCK (RTC) SUBSYSTEM" 
	<linux-rtc@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	Martin Fuzzey <mfuzzey@parkeon.com>
Subject: RE: [EXT] Re: [v4,1/2] dt-bindings: rtc: pcf85263/pcf85363: add some properties
Date: Tue, 17 Sep 2019 08:11:05 +0000
Message-ID: <DB7PR04MB4490CBB93B931D508E0AFC028F8F0@DB7PR04MB4490.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <CAL_JsqL=37HL3BnxZTxJXQTBaKoFs1_=vt4hfLqkxXkWedmPYA@mail.gmail.com>

> 
> Caution: EXT Email
> 
> On Tue, Sep 10, 2019 at 5:53 AM Biwen Li <biwen.li@nxp.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@parkeon.com>
> > Signed-off-by: Biwen Li <biwen.li@nxp.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
> >

  reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-10 10:42 Biwen Li
2019-09-10 10:42 ` [v4,2/2] rtc: pcf85263/pcf85363: support PM, wakeup device, improve performance Biwen Li
2019-09-17  1:13 ` [v4,1/2] dt-bindings: rtc: pcf85263/pcf85363: add some properties Rob Herring
2019-09-17  8:11   ` Biwen Li [this message]
2019-09-17  8:45 ` Alexandre Belloni
2019-09-17  9:13   ` [EXT] " Biwen Li

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