Commit 4800046b authored by Ovidiu Panait's avatar Ovidiu Panait Committed by Alexandre Belloni
Browse files

dt-bindings: rtc: renesas,rz-rtca3: Add RZ/V2H support 



The Renesas RZ/V2H RTC IP is based on the same RTCA3 IP as RZ/G3S
(r9a08g045), with the following differences:
- It lacks the time capture functionality
- The maximum supported periodic interrupt frequency is 128Hz instead
  of 256Hz
- It requires two reset lines instead of one

Add new compatible string "renesas,r9a09g057-rtca3" for RZ/V2H and update
the binding accordingly:
- Allow "resets" to contain one or two entries depending on the SoC.
- Add "reset-names" property, but make it required only for RZ/V2H.

Signed-off-by: default avatarOvidiu Panait <ovidiu.panait.rb@renesas.com>
Acked-by: default avatarConor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20251107210706.45044-2-ovidiu.panait.rb@renesas.com


Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
parent bf5ef3ce

Documentation/devicetree/bindings/rtc/renesas,rz-rtca3.yaml

+41 −5
Original line number Diff line number Diff line
@@ -9,14 +9,12 @@ title: Renesas RTCA-3 Real Time Clock 
maintainers:

  - Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>



allOf:

  - $ref: rtc.yaml#



properties:

  compatible:

    items:

      - enum:

          - renesas,r9a08g045-rtca3 # RZ/G3S

          - renesas,r9a09g057-rtca3 # RZ/V2H

      - const: renesas,rz-rtca3



  reg:
@@ -48,8 +46,12 @@ properties: 
    maxItems: 1



  resets:

    items:

      - description: VBATTB module reset

    minItems: 1

    maxItems: 2



  reset-names:

    minItems: 1

    maxItems: 2



required:

  - compatible
@@ -61,6 +63,39 @@ required: 
  - power-domains

  - resets



allOf:

  - $ref: rtc.yaml#



  - if:

      properties:

        compatible:

          contains:

            const: renesas,r9a08g045-rtca3

    then:

      properties:

        resets:

          items:

            - description: VBATTB module reset

        reset-names:

          const: vbattb

  - if:

      properties:

        compatible:

          contains:

            const: renesas,r9a09g057-rtca3

    then:

      properties:

        resets:

          items:

            - description: RTC reset

            - description: Reset for the RTEST registers

        reset-names:

          items:

            - const: rtc

            - const: rtest

      required:

        - reset-names



additionalProperties: false



examples:
@@ -81,4 +116,5 @@ examples: 
        clock-names = "bus", "counter";

        power-domains = <&cpg>;

        resets = <&cpg R9A08G045_VBAT_BRESETN>;

        reset-names = "vbattb";

    };