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+# 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@blaize.com>
+ - James Cowgill <james.cowgill@blaize.com>
+ - Matthew Redfearn <matthew.redfearn@blaize.com>
+ - Neil Jones <neil.jones@blaize.com>
+
+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>;
+ };
+...
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@blaize.com> --- .../devicetree/bindings/gpio/vsi,apb-gpio.yaml | 83 ++++++++++++++++++++++ 1 file changed, 83 insertions(+)