Hi Li,
On 03/28/2018 06:06 PM, Li Jun wrote:
> Add bingdings supported by current typec driver, so user can pass
> all those properties via dt.
>
> Signed-off-by: Li Jun <jun.li@xxxxxxx>
> ---
> .../bindings/connector/usb-connector.txt | 39 ++++++++++++++++++++++
> 1 file changed, 39 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/connector/usb-connector.txt b/Documentation/devicetree/bindings/connector/usb-connector.txt
> index e1463f1..922f22b 100644
> --- a/Documentation/devicetree/bindings/connector/usb-connector.txt
> +++ b/Documentation/devicetree/bindings/connector/usb-connector.txt
> @@ -15,6 +15,29 @@ Optional properties:
> - type: size of the connector, should be specified in case of USB-A, USB-B
> non-fullsize connectors: "mini", "micro".
>
> +Optional properties for usb-c-connector:
> +- power-type: should be one of "source", "sink" or "dual"(DRP) if typec
> + connector has power support.
> +- try-power-role: preferred power role if "dual"(DRP) can support Try.SNK
> + or Try.SRC, should be "sink" for Try.SNK or "source" for Try.SRC.
> +- data-type: should be one of "host", "device", "dual"(DRD) if typec
> + connector supports USB data.
> +
> +Required properties for usb-c-connector with power delivery support:
> +- source-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 for power source and power dual role.
> +- sink-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 for power sink and power dual role.
> +- op-sink-microwatt-hours: Sink required operating power in micro
> + watt-hours, if source offered power is less then it, Capability Mismatch
> + is set, required for power sink and power dual role.
This doesn't make sense. The unit of power is watt (W), watt-hour on the other hand
is a measurement of energy. I think "op-sink-microwatt" is what we want here.
// Mats
> +
> Required nodes:
> - any data bus to the connector should be modeled using the OF graph bindings
> specified in bindings/graph.txt, unless the bus is between parent node and
> @@ -73,3 +96,19 @@ ccic: s2mm005@33 {
> };
> };
> };
> +
> +3. USB-C connector attached to a typec port controller(ptn5110), which has
> +power delivery support and enables drp.
> +
> +typec: ptn5110@50 {
> + ...
> + usb_con: connector {
> + compatible = "usb-c-connector";
> + label = "USB-C";
> + power-type = "dual";
> + try-power-role = "sink";
> + source-pdos = <0x380190c8>;
> + sink-pdos = <0x380190c8 0x3802d0c8>;
> + op-sink-microwatt-hours = <9000000>;
> + };
> +};
>
_______________________________________________
devel mailing list
devel@xxxxxxxxxxxxxxxxxxxxxx
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
