xref: /linux/Documentation/devicetree/bindings/usb/gpio-sbu-mux.yaml (revision 230a7a71f92212e723fa435d4ca5922de33ec88a) 
1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/usb/gpio-sbu-mux.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: GPIO-based SBU mux
8
9maintainers:
10  - Bjorn Andersson <andersson@kernel.org>
11
12description:
13  In USB Type-C applications the SBU lines needs to be connected, disconnected
14  and swapped depending on the altmode and orientation. This binding describes
15  a family of hardware solutions which switches between these modes using GPIO
16  signals.
17
18properties:
19  compatible:
20    items:
21      - enum:
22          - nxp,cbdtu02043
23          - onnn,fsusb43l10x
24          - pericom,pi3usb102
25      - const: gpio-sbu-mux
26
27  enable-gpios:
28    description: Switch enable GPIO
29
30  select-gpios:
31    description: Orientation select
32
33  vcc-supply:
34    description: power supply
35
36  mode-switch: true
37  orientation-switch: true
38
39  port:
40    $ref: /schemas/graph.yaml#/properties/port
41    description:
42      A port node to link the SBU mux to a TypeC controller for the purpose of
43      handling altmode muxing and orientation switching.
44
45required:
46  - compatible
47  - enable-gpios
48  - select-gpios
49  - orientation-switch
50  - port
51
52allOf:
53  - $ref: usb-switch.yaml#
54
55additionalProperties: false
56
57examples:
58  - |
59    #include <dt-bindings/gpio/gpio.h>
60
61    tcpm {
62        connector {
63            compatible = "usb-c-connector";
64
65            ports {
66                #address-cells = <1>;
67                #size-cells = <0>;
68
69                port@0 {
70                    reg = <0>;
71                    tcpm_hs_out: endpoint {
72                        remote-endpoint = <&usb_hs_phy_in>;
73                    };
74                };
75
76                port@1 {
77                    reg = <1>;
78                    tcpm_ss_out: endpoint {
79                        remote-endpoint = <&usb_ss_phy_in>;
80                    };
81                };
82
83                port@2 {
84                    reg = <2>;
85                    tcpm_sbu_out: endpoint {
86                        remote-endpoint = <&sbu_mux_in>;
87                    };
88                };
89            };
90        };
91    };
92
93    sbu-mux {
94        compatible = "pericom,pi3usb102", "gpio-sbu-mux";
95
96        enable-gpios = <&tlmm 101 GPIO_ACTIVE_LOW>;
97        select-gpios = <&tlmm 164 GPIO_ACTIVE_HIGH>;
98
99        mode-switch;
100        orientation-switch;
101
102        port {
103            sbu_mux_in: endpoint {
104                remote-endpoint = <&tcpm_sbu_out>;
105            };
106        };
107    };
108...
109