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SubjectRe: [v4,1/2] dt-bindings: rtc: pcf85263/pcf85363: add some properties
On 10/09/2019 18:42:46+0800, Biwen Li 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.
> +

This binding still doesn't work because there may be any combination of
interrupts on any of the two pins that this binding doesn't allow.

> +- 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.
> +

It makes more sense to have quartz-drive-strength-ohms as a generic
property.


--
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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