diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2025-08-22 17:46:27 +0200 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2025-08-25 20:49:58 +0200 |
| commit | 1f3c076063f03999c351c0725adf744ef5660733 (patch) | |
| tree | 24c8ef7a478a4173485434e0481ce7e347762146 | |
| parent | 545908a9fb9c01e1bd7afe040f5623f561d50ea0 (diff) | |
dt-bindings: gpio-mmio: Add MMIO for IXP4xx expansion bus
This expansion is a simple MMIO-mapped GPIO device but the bus has a
number of additional properties that we need to bring in using
a reference to the bus child node schema.
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250822-ixp4xx-eb-mmio-gpio-v2-2-bd2edd4a9c74@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
| -rw-r--r-- | Documentation/devicetree/bindings/gpio/gpio-mmio.yaml | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio-mmio.yaml b/Documentation/devicetree/bindings/gpio/gpio-mmio.yaml index ca32317dff85..b4d55bf6a285 100644 --- a/Documentation/devicetree/bindings/gpio/gpio-mmio.yaml +++ b/Documentation/devicetree/bindings/gpio/gpio-mmio.yaml @@ -22,6 +22,7 @@ properties: - brcm,bcm6345-gpio - ni,169445-nand-gpio - wd,mbl-gpio # Western Digital MyBook Live memory-mapped GPIO controller + - intel,ixp4xx-expansion-bus-mmio-gpio big-endian: true @@ -89,6 +90,14 @@ properties: description: If this property is present, the controller cannot drive the GPIO lines. +if: + properties: + compatible: + contains: + const: intel,ixp4xx-expansion-bus-mmio-gpio +then: + $ref: /schemas/memory-controllers/intel,ixp4xx-expansion-peripheral-props.yaml# + patternProperties: "^.+-hog(-[0-9]+)?$": type: object @@ -102,7 +111,7 @@ required: - '#gpio-cells' - gpio-controller -additionalProperties: false +unevaluatedProperties: false examples: - | @@ -132,3 +141,22 @@ examples: gpio-controller; #gpio-cells = <2>; }; + + bus@c4000000 { + compatible = "intel,ixp42x-expansion-bus-controller", "syscon"; + reg = <0xc4000000 0x30>; + native-endian; + #address-cells = <2>; + #size-cells = <1>; + ranges = <0 0x0 0x50000000 0x01000000>; + dma-ranges = <0 0x0 0x50000000 0x01000000>; + gpio@1,0 { + compatible = "intel,ixp4xx-expansion-bus-mmio-gpio"; + gpio-controller; + #gpio-cells = <2>; + big-endian; + reg = <1 0x00000000 0x2>; + reg-names = "dat"; + intel,ixp4xx-eb-write-enable = <1>; + }; + }; |