This is a custom silicon GPIO driver provided from VeriSilicon Microelectronics. It has 32 input/output ports which can be configured as edge or level triggered interrupts. It also provides a de-bounce feature. Signed-off-by: Nikolaos Pasaloukos <nikolaos.pasaloukos@xxxxxxxxxx> --- .../devicetree/bindings/gpio/vsi,apb-gpio.yaml | 83 ++++++++++++++++++++++ 1 file changed, 83 insertions(+) diff --git a/Documentation/devicetree/bindings/gpio/vsi,apb-gpio.yaml b/Documentation/devicetree/bindings/gpio/vsi,apb-gpio.yaml new file mode 100644 index 0000000000000000000000000000000000000000..4a293b44e03895b6a45cb85f42c47c46b64f5638 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/vsi,apb-gpio.yaml @@ -0,0 +1,83 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/gpio/vsi,apb-gpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: VeriSilicon APB GPIO controller + +description: | + VeriSilicon GPIO controllers have a configurable number of ports, each + of which are intended to be represented as child nodes with the generic + GPIO-controller properties as described in this bindings file. + +maintainers: + - Nikolaos Pasaloukos <nikolaos.pasaloukos@xxxxxxxxxx> + - James Cowgill <james.cowgill@xxxxxxxxxx> + - Matthew Redfearn <matthew.redfearn@xxxxxxxxxx> + - Neil Jones <neil.jones@xxxxxxxxxx> + +properties: + $nodename: + pattern: "^gpio@[0-9a-f]+$" + + compatible: + oneOf: + - description: Verisilicon APB GPIO controller + items: + - enum: + - vsi,apb-gpio-0.2 + + reg: + maxItems: 1 + + gpio-controller: true + + '#gpio-cells': + const: 2 + + ngpios: + default: 32 + minimum: 1 + maximum: 32 + + interrupts: + description: | + The interrupts to the parent controller raised when GPIOs generate + the interrupts. Specify a single interrupt since the controller + provides one combined interrupt for all GPIOs. + maxItems: 1 + + gpio-line-names: true + + interrupt-controller: true + + '#interrupt-cells': + const: 2 + +required: + - compatible + - reg + - gpio-controller + - '#gpio-cells' + +dependencies: + interrupt-controller: [ interrupts ] + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + + gpio: gpio@4c0000 { + compatible = "vsi,apb-gpio-0.2"; + reg = <0x004c0000 0x1000>; + gpio-controller; + #gpio-cells = <2>; + ngpios = <32>; + interrupt-controller; + #interrupt-cells = <2>; + interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>; + }; +... -- 2.43.0
