On Mon, Jan 17, 2022 at 11:07:45AM +0000, conor.dooley@xxxxxxxxxxxxx wrote: > From: Conor Dooley <conor.dooley@xxxxxxxxxxxxx> > > Add device tree bindings for the real time clock on > the Microchip PolarFire SoC. > > Signed-off-by: Daire McNamara <daire.mcnamara@xxxxxxxxxxxxx> > Signed-off-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx> > --- > .../bindings/rtc/microchip,mfps-rtc.yaml | 63 +++++++++++++++++++ > 1 file changed, 63 insertions(+) > create mode 100644 Documentation/devicetree/bindings/rtc/microchip,mfps-rtc.yaml > > diff --git a/Documentation/devicetree/bindings/rtc/microchip,mfps-rtc.yaml b/Documentation/devicetree/bindings/rtc/microchip,mfps-rtc.yaml > new file mode 100644 > index 000000000000..d57460cbe5e3 > --- /dev/null > +++ b/Documentation/devicetree/bindings/rtc/microchip,mfps-rtc.yaml > @@ -0,0 +1,63 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/rtc/microchip,mfps-rtc.yaml# > + > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Microchip PolarFire Soc (MPFS) RTC Device Tree Bindings > + > +allOf: > + - $ref: rtc.yaml# > + > +maintainers: > + - Daire McNamara <daire.mcnamara@xxxxxxxxxxxxx> > + - Lewis Hanly <lewis.hanly@xxxxxxxxxxxxx> > + > +properties: > + compatible: > + enum: > + - microchip,mpfs-rtc > + > + reg: > + maxItems: 1 > + > + interrupts: > + maxItems: 2 Need to define what each one is. > + > + microchip,prescaler: > + description: | > + The prescaler divides the input frequency to create a time-based strobe (typically 1 Hz) for > + the calendar counter. The Alarm and Compare Registers, in conjunction with the calendar > + counter, facilitate time-matched events. To properly operate in Calendar or Binary mode, > + the 26-bit prescaler must be programmed to generate a strobe to the RTC. > + maxItems: 1 > + $ref: /schemas/types.yaml#/definitions/uint32 Can't you calculate this based on the clock input freq? > + > + clocks: > + maxItems: 1 > + > + clock-names: > + items: > + - const: rtc > + > +required: > + - compatible > + - reg > + - interrupts > + - clocks > + - clock-names > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/clock/microchip,mpfs-clock.h> > + rtc@20124000 { > + compatible = "microchip,mpfs-rtc"; > + reg = <0x20124000 0x1000>; > + clocks = <&clkcfg CLK_RTC>; > + clock-names = "rtc"; > + interrupts = <80>, <81>; > + }; > +... > -- > 2.32.0 > >
