Unverified Commit e93d7b2d authored by Cosmin Tanislav's avatar Cosmin Tanislav Committed by Mark Brown
Browse files

spi: dt-bindings: renesas,rzv2h-rspi: document RZ/T2H and RZ/N2H 



The Renesas RZ/T2H (R9A09G077) and RZ/N2H (R9A09G087) SoCs have four SPI
peripherals.

Compared to the previously supported RZ/V2H, these SoCs have a smaller
FIFO, no resets, and only two clocks: PCLKSPIn and PCLK. PCLKSPIn,
being the clock from which the SPI transfer clock is generated, is the
equivalent of the TCLK from V2H.

Document them, and use RZ/T2H as a fallback for RZ/N2H as the SPIs are
entirely compatible.

Signed-off-by: default avatarCosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Acked-by: default avatarConor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20251119161434.595677-11-cosmin-gabriel.tanislav.xa@renesas.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent bc4f0b1e

Documentation/devicetree/bindings/spi/renesas,rzv2h-rspi.yaml

+52 −10
Original line number Diff line number Diff line
@@ -9,12 +9,15 @@ title: Renesas RZ/V2H(P) Renesas Serial Peripheral Interface (RSPI) 
maintainers:

  - Fabrizio Castro <fabrizio.castro.jz@renesas.com>



allOf:

  - $ref: spi-controller.yaml#



properties:

  compatible:

    const: renesas,r9a09g057-rspi # RZ/V2H(P)

    oneOf:

      - enum:

          - renesas,r9a09g057-rspi # RZ/V2H(P)

          - renesas,r9a09g077-rspi # RZ/T2H

      - items:

          - const: renesas,r9a09g087-rspi # RZ/N2H

          - const: renesas,r9a09g077-rspi # RZ/T2H



  reg:

    maxItems: 1
@@ -36,13 +39,12 @@ properties: 
      - const: tx



  clocks:

    minItems: 2

    maxItems: 3



  clock-names:

    items:

      - const: pclk

      - const: pclk_sfr

      - const: tclk

    minItems: 2

    maxItems: 3



  resets:

    maxItems: 2
@@ -62,12 +64,52 @@ required: 
  - interrupt-names

  - clocks

  - clock-names

  - resets

  - reset-names

  - power-domains

  - '#address-cells'

  - '#size-cells'



allOf:

  - $ref: spi-controller.yaml#

  - if:

      properties:

        compatible:

          contains:

            enum:

              - renesas,r9a09g057-rspi

    then:

      properties:

        clocks:

          minItems: 3



        clock-names:

          items:

            - const: pclk

            - const: pclk_sfr

            - const: tclk



      required:

        - resets

        - reset-names



  - if:

      properties:

        compatible:

          contains:

            enum:

              - renesas,r9a09g077-rspi

    then:

      properties:

        clocks:

          maxItems: 2



        clock-names:

          items:

            - const: pclk

            - const: pclkspi



        resets: false

        reset-names: false



unevaluatedProperties: false



examples: