On Tue, Sep 26, 2017 at 12:05:13PM +0800, Li Jun wrote: > port-type is required for any typec port; default-role is only required > for drp; power source capable needs src-pdos; power sink capable needs > snk-pdos, max-snk-mv, max-snk-ma, op-snk-mw.
"dt-bindings: usb: ..." for the subject prefix. > > Signed-off-by: Li Jun <[email protected]> > --- > Documentation/devicetree/bindings/usb/typec.txt | 46 > +++++++++++++++++++++++++ > 1 file changed, 46 insertions(+) > > diff --git a/Documentation/devicetree/bindings/usb/typec.txt > b/Documentation/devicetree/bindings/usb/typec.txt > new file mode 100644 > index 0000000..36d4467 > --- /dev/null > +++ b/Documentation/devicetree/bindings/usb/typec.txt > @@ -0,0 +1,46 @@ > +Generic typec and power delivery properties > +------------------------------------------- What node do these apply to? A type C connector node? The PD microcontroller? I'm reluctant to accept just a random list of properties without a more complete Type-C binding which I'd expect to have a connector node, OF graph ports to connect to video outputs, connection to USB controller, and connection to the PD controller. > + > +Required properties: > +- port-type: should be one of "source", "sink" or "dual". > +- default-role: preferred power role if drp, should be "sink" or "source". > +- src-pdos: An array of u32 with each entry providing supported power > + source data object(PDO), the detailed bit definitions of > + PDO can be found in "Universal Serial Bus Power Delivery > + Specification" chapter 6.4.1.2 Source_Capabilities Message, > + the order of each entry(PDO) should follow the PD spec > chapter > + 6.4.1. Required only for power source and power dual role > with > + power delivery support. > +- snk-pdos: An array of u32 with each entry providing supported power > + sink data object(PDO), the detailed bit definitions of PDO > + can be found in "Universal Serial Bus Power Delivery > + Specification" chapter 6.4.1.3 Sink Capabilities Message, > + the order of each entry(PDO) should follow the PD spec > chapter > + 6.4.1. Required only for power sink and power dual role with > + power delivery support. > +- max-snk-mv: The max voltage the sink can support in millivoltage, > required > + only for power sink and power dual role with power delivery > + support. > +- max-snk-ma: The max current the sink can support in milliampere, required > + only for power sink and power dual role with power delivery > + support. > +- op-snk-mw: Sink required operating power in milliwatts, if source > offered > + power is less then it, Capability Mismatch is set, required > + only for power sink and power dual role with power delivery > + support. Use the standard unit suffixes as defined in property-units.txt > + > +Example: > + > +ptn5110@50 { > + compatible = "usb,tcpci"; > + reg = <0x50>; > + interrupt-parent = <&gpio3>; > + interrupts = <3 IRQ_TYPE_LEVEL_LOW>; > + port-type = "dual"; > + default-role = "sink"; > + src-pdos = <0x380190c8>; > + snk-pdos = <0x380190c8 0x3802d0c8>; > + max-snk-mv = <9000>; > + max-snk-ma = <1000>; > + op-snk-mw = <9000>; > +}; > -- > 2.6.6 > > -- > To unsubscribe from this list: send the line "unsubscribe devicetree" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
