120 lines
3.8 KiB
Plaintext
Executable file
120 lines
3.8 KiB
Plaintext
Executable file
USB Connector
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=============
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USB connector node represents physical USB connector. It should be
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a child of USB interface controller.
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Required properties:
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- compatible: describes type of the connector, must be one of:
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"usb-a-connector",
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"usb-b-connector",
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"usb-c-connector".
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Optional properties:
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- label: symbolic name for the connector,
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- type: size of the connector, should be specified in case of USB-A, USB-B
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non-fullsize connectors: "mini", "micro".
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Optional properties for usb-c-connector:
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- power-role: should be one of "source", "sink" or "dual"(DRP) if typec
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connector has power support.
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- try-power-role: preferred power role if "dual"(DRP) can support Try.SNK
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or Try.SRC, should be "sink" for Try.SNK or "source" for Try.SRC.
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- data-role: should be one of "host", "device", "dual"(DRD) if typec
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connector supports USB data.
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Required properties for usb-c-connector with power delivery support:
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- source-pdos: An array of u32 with each entry providing supported power
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source data object(PDO), the detailed bit definitions of PDO can be found
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in "Universal Serial Bus Power Delivery Specification" chapter 6.4.1.2
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Source_Capabilities Message, the order of each entry(PDO) should follow
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the PD spec chapter 6.4.1. Required for power source and power dual role.
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User can specify the source PDO array via PDO_FIXED/BATT/VAR() defined in
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dt-bindings/usb/pd.h.
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- sink-pdos: An array of u32 with each entry providing supported power
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sink data object(PDO), the detailed bit definitions of PDO can be found
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in "Universal Serial Bus Power Delivery Specification" chapter 6.4.1.3
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Sink Capabilities Message, the order of each entry(PDO) should follow
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the PD spec chapter 6.4.1. Required for power sink and power dual role.
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User can specify the sink PDO array via PDO_FIXED/BATT/VAR() defined in
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dt-bindings/usb/pd.h.
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- op-sink-microwatt: Sink required operating power in microwatt, if source
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can't offer the power, Capability Mismatch is set. Required for power
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sink and power dual role.
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Required nodes:
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- any data bus to the connector should be modeled using the OF graph bindings
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specified in bindings/graph.txt, unless the bus is between parent node and
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the connector. Since single connector can have multpile data buses every bus
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has assigned OF graph port number as follows:
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0: High Speed (HS), present in all connectors,
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1: Super Speed (SS), present in SS capable connectors,
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2: Sideband use (SBU), present in USB-C.
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Examples
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--------
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1. Micro-USB connector with HS lines routed via controller (MUIC):
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muic-max77843@66 {
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...
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usb_con: connector {
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compatible = "usb-b-connector";
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label = "micro-USB";
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type = "micro";
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};
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};
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2. USB-C connector attached to CC controller (s2mm005), HS lines routed
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to companion PMIC (max77865), SS lines to USB3 PHY and SBU to DisplayPort.
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DisplayPort video lines are routed to the connector via SS mux in USB3 PHY.
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ccic: s2mm005@33 {
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...
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usb_con: connector {
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compatible = "usb-c-connector";
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label = "USB-C";
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ports {
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#address-cells = <1>;
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#size-cells = <0>;
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port@0 {
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reg = <0>;
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usb_con_hs: endpoint {
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remote-endpoint = <&max77865_usbc_hs>;
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};
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};
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port@1 {
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reg = <1>;
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usb_con_ss: endpoint {
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remote-endpoint = <&usbdrd_phy_ss>;
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};
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};
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port@2 {
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reg = <2>;
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usb_con_sbu: endpoint {
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remote-endpoint = <&dp_aux>;
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};
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};
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};
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};
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};
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3. USB-C connector attached to a typec port controller(ptn5110), which has
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power delivery support and enables drp.
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typec: ptn5110@50 {
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...
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usb_con: connector {
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compatible = "usb-c-connector";
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label = "USB-C";
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power-role = "dual";
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try-power-role = "sink";
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source-pdos = <PDO_FIXED(5000, 2000, PDO_FIXED_USB_COMM)>;
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sink-pdos = <PDO_FIXED(5000, 2000, PDO_FIXED_USB_COMM)
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PDO_VAR(5000, 12000, 2000)>;
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op-sink-microwatt = <10000000>;
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};
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};
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