[PATCH 02/12] usb: typec: add basic typec properties

[Li Jun <jun.li-3arQi8VN3Tc@public.gmane.org>]

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 <jun.li-3arQi8VN3Tc@public.gmane.org>
---
 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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