[PATCH 02/12] usb: typec: add basic typec properties
From: Li Jun <hidden>
Date: 2017-09-26 00:45:17
Subsystem:
open firmware and flattened device tree bindings, the rest, usb subsystem · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds, Greg Kroah-Hartman
Possibly related (same subject, not in this thread)
- 2017-09-26 · RE: [PATCH 02/12] usb: typec: add basic typec properties · Jun Li <hidden>
- 2017-09-26 · Re: [PATCH 02/12] usb: typec: add basic typec properties · Heikki Krogerus <hidden>
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. Signed-off-by: Li Jun <redacted> --- 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 +------------------------------------------- + +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. + +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
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