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Commit 315842fb authored by Liangliang Lu's avatar Liangliang Lu Committed by Gerrit - the friendly Code Review server
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dt-bindings: usb: Add super speed re-driver bindings 



Add bindings for super speed re-driver driver. This driver will
be used to re-drive super speed signal on Kona.

Change-Id: Ieae6a7b830ac6b3728228abee13fe5ed46e1e3cf
Signed-off-by: default avatarLiangliang Lu <luliang@codeaurora.org>
parent a3d9530a

Documentation/devicetree/bindings/usb/onsemi_redriver.txt

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+53 −0
Original line number Diff line number Diff line 
ON Semiconductor USB Type-C and display port 10Gbps Linear Re-Driver



Required properties:

- compatible: Must be "onnn,redriver".

- reg: I2C address on the selected bus.

- extcon: phandles to external connector devices. The first phandle

	should point to the external connector which provides

	both "USB" cable events and "USB-HOST" cable events.

	An optional second phandle may be specified for DP

	lane events.



Optional properties:

- eq: Equalization value of re-driver channel A/B/C/D, 8 bit.

	eq[0] - eq[3]: Channel A-D parameter for USB.

	eq[4] - eq[7]: Channel A-D parameter for DP.

- flat-gain: Flat gain control value of re-driver channel A/B/C/D, 8 bit.

	flat_gain[0] - flat_gain[3]: Channel A-D parameter for USB.

	flat_gain[4] - flat_gain[7]: Channel A-D parameter for DP.

- output-comp: Output compression value of re-driver channel A/B/C/D,

8 bit.

	output_comp[0] - output_comp[3]: Channel A-D parameter for USB.

	output_comp[4] - output_comp[7]: Channel A-D parameter for DP.

- loss-match: Loss profile matching control value of re-driver channel

A/B/C/D, 8 bit.

	loss_match[0] - loss_match[3]: Channel A-D parameter for USB.

	loss_match[4] - loss_match[7]: Channel A-D parameter for DP.



Example:

	redriver@19 {

		compatible = "onnn,redriver";

		reg = <0x19>;

		extcon = <&pm8150b_pdphy>, <&pm8150b_pdphy>;

		eq = /bits/ 8 <

				/* Parameters for USB */

				0x4 0x4 0x4 0x4

				/* Parameters for DP */

				0x6 0x4 0x4 0x6>;

		flat-gain = /bits/ 8 <

				/* Parameters for USB */

				0x3 0x1 0x1 0x3

				/* Parameters for DP */

				0x2 0x1 0x1 0x2>;

		output-comp = /bits/ 8 <

				/* Parameters for USB */

				0x3 0x3 0x3 0x3

				/* Parameters for DP */

				0x3 0x3 0x3 0x3>;

		loss-match = /bits/ 8 <

				/* Parameters for USB */

				0x1 0x3 0x3 0x1

				/* Parameters for DP */

				0x3 0x3 0x3 0x3>;

	};