RE: [PATCH v3 02/12] dt-bindings: usb: add documentation for typec port controller(TCPCI)

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> -----Original Message-----
> From: Jun Li
> Sent: 2018年3月20日 10:29
> To: Mats Karrman <mats.dev.list@xxxxxxxxx>; robh+dt@xxxxxxxxxx;
> mark.rutland@xxxxxxx; gregkh@xxxxxxxxxxxxxxxxxxx;
> heikki.krogerus@xxxxxxxxxxxxxxx
> Cc: a.hajda@xxxxxxxxxxx; linux@xxxxxxxxxxxx; yueyao@xxxxxxxxxx;
> shufan_lee@xxxxxxxxxxx; o_leveque@xxxxxxxxx; linux-usb@xxxxxxxxxxxxxxx;
> dl-linux-imx <linux-imx@xxxxxxx>
> Subject: RE: [PATCH v3 02/12] dt-bindings: usb: add documentation for typec
> port controller(TCPCI)
> 
> Hi
> > -----Original Message-----
> > From: Mats Karrman [mailto:mats.dev.list@xxxxxxxxx]
> > Sent: 2018年3月15日 23:54
> > To: Jun Li <jun.li@xxxxxxx>; robh+dt@xxxxxxxxxx; mark.rutland@xxxxxxx;
> > gregkh@xxxxxxxxxxxxxxxxxxx; heikki.krogerus@xxxxxxxxxxxxxxx
> > Cc: a.hajda@xxxxxxxxxxx; linux@xxxxxxxxxxxx; yueyao@xxxxxxxxxx;
> > shufan_lee@xxxxxxxxxxx; o_leveque@xxxxxxxxx;
> > linux-usb@xxxxxxxxxxxxxxx; dl-linux-imx <linux-imx@xxxxxxx>
> > Subject: Re: [PATCH v3 02/12] dt-bindings: usb: add documentation for
> > typec port controller(TCPCI)
> >
> > Hi,
> >
> > On 2018-03-13 10:34, Li Jun wrote:
> >
> > > TCPCI stands for typec port controller interface, its implementation
> > > has full typec port control with power delivery support, it's a
> > > standard i2c slave with GPIO input as irq interface, detail see spec
> > > "Universal Serial Bus Type-C Port Controller Interface Specification
> > > Revision 1.0, Version 1.1"
> > >
> > > Signed-off-by: Li Jun <jun.li@xxxxxxx>
> > > ---
> > > change for v3:
> > > - change compatible string from "usb,tcpci" to be
> > >    "usb-tcpci,chip-specific-string", update example of it.
> > >
> > >   .../devicetree/bindings/usb/typec-tcpci.txt        | 36
> > ++++++++++++++++++++++
> > >   1 file changed, 36 insertions(+)
> > >
> > > diff --git a/Documentation/devicetree/bindings/usb/typec-tcpci.txt
> > > b/Documentation/devicetree/bindings/usb/typec-tcpci.txt
> > > new file mode 100644
> > > index 0000000..fe7d2ff
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/usb/typec-tcpci.txt
> > > @@ -0,0 +1,36 @@
> > > +TCPCI(Typec port cotroller interface) binding
> > > +---------------------------------------------
> > > +
> > > +Required properties:
> > > +- compatible:       should be "usb-tcpci,chip-specific-string".
> > > +- reg:              the i2c slave address of typec port controller device.
> > > +- interrupt-parent: the phandle to the interrupt controller which provides
> > > +                    the interrupt.
> > > +- interrupts:       interrupt specification for tcpci alert.
> > > +
> > > +Required sub-node:
> > > +- connector: The "usb-c-connector" attached to the tcpci chip, the
> > > +bindings
> > > +  of connector node are specified in
> > > +  Documentation/devicetree/bindings/connector/usb-connector.txt
> > > +
> > > +Example:
> > > +
> > > +ptn5110@50 {
> > > +	compatible = "usb-tcpci,ptn5110";
> > > +	reg = <0x50>;
> > > +	interrupt-parent = <&gpio3>;
> > > +	interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
> > > +
> > > +	usb_con: connector {
> > > +		compatible = "usb-c-connector";
> > > +		label = "USB-C";
> > > +		port-type = "dual";
> > > +		try-power-role = "sink"
> > > +		source-pdos = <0x380190c8>;
> > > +		sink-pdos = <0x380190c8 0x3802d0c8>;
> > > +		max-sink-microvolt = <9000>;
> > > +		max-sink-microamp = <2000>;
> > > +		max-sink-microwatt-hours = <18000>;
> > > +		op-sink-microwatt-hours = <9000>;
> >
> > Values should change with suffix, e.g. 9000mV = 9000000uV
> >
> 
> Yes, thanks for pointing this out, I will update in v4.

Just realized we are going to remove those properties, see[1]:

[1] https://www.spinics.net/lists/linux-usb/msg166986.html

anyway thank you for the comments.

Jun
> 
> Jun
> 
> > // Mats
> >
> > > +	};
> > > +};
> > >
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