Commit 084d01a1 authored by Yao Zi's avatar Yao Zi Committed by Bartosz Golaszewski
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dt-bindings: gpio: loongson: Document GPIO controller of LS2K0300 SoC 



Loongson-2K0300 ships a GPIO controller whose input/output control logic
is similar to previous generation of SoCs. Additionally, it acts as an
interrupt-controller supporting both level and edge interrupts and has a
distinct reset signal.

Describe its compatible in devicetree. We enlarge the maximum value of
ngpios to 128, since the controller technically supports at most 128
pins, although only 106 are routed out of the package. Properties for
interrupt-controllers and resets are introduced and limited as LS2K0300
only.

Signed-off-by: default avatarYao Zi <ziyao@disroot.org>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: default avatarHuacai Chen <chenhuacai@loongson.cn>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250904013438.2405-2-ziyao@disroot.org


Signed-off-by: default avatarBartosz Golaszewski <bartosz.golaszewski@linaro.org>
parent d3e7efad

Documentation/devicetree/bindings/gpio/loongson,ls-gpio.yaml

+27 −1
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ properties: 
    oneOf:

      - enum:

          - loongson,ls2k-gpio

          - loongson,ls2k0300-gpio

          - loongson,ls2k0500-gpio0

          - loongson,ls2k0500-gpio1

          - loongson,ls2k2000-gpio0
@@ -36,7 +37,7 @@ properties: 


  ngpios:

    minimum: 1

    maximum: 64

    maximum: 128



  "#gpio-cells":

    const: 2
@@ -49,6 +50,14 @@ properties: 
    minItems: 1

    maxItems: 64



  "#interrupt-cells":

    const: 2



  interrupt-controller: true



  resets:

    maxItems: 1



required:

  - compatible

  - reg
@@ -58,6 +67,23 @@ required: 
  - gpio-ranges

  - interrupts



allOf:

  - if:

      properties:

        compatible:

          contains:

            const: loongson,ls2k0300-gpio

    then:

      required:

        - "#interrupt-cells"

        - interrupt-controller

        - resets

    else:

      properties:

        "#interrupts-cells": false

        interrupt-controller: false

        resets: false



additionalProperties: false



examples: