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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/usb/gpio-sbu-mux.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: GPIO-based SBU mux
maintainers:
- Bjorn Andersson <andersson@kernel.org>
description:
In USB Type-C applications the SBU lines needs to be connected, disconnected
and swapped depending on the altmode and orientation. This binding describes
a family of hardware solutions which switches between these modes using GPIO
signals.
properties:
compatible:
items:
- enum:
- onnn,fsusb43l10x
- pericom,pi3usb102
- const: gpio-sbu-mux
enable-gpios:
description: Switch enable GPIO
select-gpios:
description: Orientation select
vcc-supply:
description: power supply
mode-switch:
description: Flag the port as possible handle of altmode switching
type: boolean
orientation-switch:
description: Flag the port as possible handler of orientation switching
type: boolean
port:
$ref: /schemas/graph.yaml#/properties/port
description:
A port node to link the SBU mux to a TypeC controller for the purpose of
handling altmode muxing and orientation switching.
required:
- compatible
- enable-gpios
- select-gpios
- mode-switch
- orientation-switch
- port
additionalProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
tcpm {
connector {
compatible = "usb-c-connector";
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
tcpm_hs_out: endpoint {
remote-endpoint = <&usb_hs_phy_in>;
};
};
port@1 {
reg = <1>;
tcpm_ss_out: endpoint {
remote-endpoint = <&usb_ss_phy_in>;
};
};
port@2 {
reg = <2>;
tcpm_sbu_out: endpoint {
remote-endpoint = <&sbu_mux_in>;
};
};
};
};
};
sbu-mux {
compatible = "pericom,pi3usb102", "gpio-sbu-mux";
enable-gpios = <&tlmm 101 GPIO_ACTIVE_LOW>;
select-gpios = <&tlmm 164 GPIO_ACTIVE_HIGH>;
mode-switch;
orientation-switch;
port {
sbu_mux_in: endpoint {
remote-endpoint = <&tcpm_sbu_out>;
};
};
};
...
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