4936eb7567
The "reset-gpios" is optional in real case, for example reset pin is is hard wired to "high". And this fact is also reflected by the devm_gpio_get_optional() calling in driver code. Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Acked-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20231018150448.1980-1-jszhang@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
71 lines
1.4 KiB
YAML
71 lines
1.4 KiB
YAML
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/usb/vialab,vl817.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Via labs VL817 USB 3.1 hub controller
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maintainers:
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- Anand Moon <linux.amoon@gmail.com>
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allOf:
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- $ref: usb-device.yaml#
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properties:
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compatible:
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enum:
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- usb2109,2817
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- usb2109,817
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reg: true
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reset-gpios:
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maxItems: 1
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description:
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GPIO controlling the RESET# pin.
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vdd-supply:
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description:
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phandle to the regulator that provides power to the hub.
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peer-hub:
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$ref: /schemas/types.yaml#/definitions/phandle
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description:
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phandle to the peer hub on the controller.
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required:
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- compatible
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- reg
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- vdd-supply
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- peer-hub
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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usb {
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#address-cells = <1>;
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#size-cells = <0>;
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/* 2.0 hub on port 1 */
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hub_2_0: hub@1 {
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compatible = "usb2109,2817";
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reg = <1>;
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vdd-supply = <&vcc_5v>;
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peer-hub = <&hub_3_0>;
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reset-gpios = <&gpio 20 GPIO_ACTIVE_LOW>;
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};
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/* 3.1 hub on port 4 */
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hub_3_0: hub@2 {
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compatible = "usb2109,817";
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reg = <2>;
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vdd-supply = <&vcc_5v>;
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peer-hub = <&hub_2_0>;
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reset-gpios = <&gpio 20 GPIO_ACTIVE_LOW>;
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};
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};
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