Doc/DT: Add OMAP5 DSS DT bindings

Texas Instruments OMAP5 Display Subsystem

=========================================

See Documentation/devicetree/bindings/video/ti,omap-dss.txt for generic

description about OMAP Display Subsystem bindings.

DSS Core

--------

Required properties:

- compatible: "ti,omap5-dss"

- reg: address and length of the register space

- ti,hwmods: "dss_core"

- clocks: handle to fclk

- clock-names: "fck"

Required nodes:

- DISPC

Optional nodes:

- DSS Submodules: RFBI, DSI, HDMI

- Video port for DPI output

DPI Endpoint required properties:

- data-lines: number of lines used

DISPC

-----

Required properties:

- compatible: "ti,omap5-dispc"

- reg: address and length of the register space

- ti,hwmods: "dss_dispc"

- interrupts: the DISPC interrupt

- clocks: handle to fclk

- clock-names: "fck"

RFBI

----

Required properties:

- compatible: "ti,omap5-rfbi"

- reg: address and length of the register space

- ti,hwmods: "dss_rfbi"

- clocks: handles to fclk and iclk

- clock-names: "fck", "ick"

Optional nodes:

- Video port for RFBI output

- RFBI controlled peripherals

DSI

---

Required properties:

- compatible: "ti,omap5-dsi"

- reg: addresses and lengths of the register spaces for 'proto', 'phy' and 'pll'

- reg-names: "proto", "phy", "pll"

- interrupts: the DSI interrupt line

- ti,hwmods: "dss_dsi1" or "dss_dsi2"

- vdd-supply: power supply for DSI

- clocks: handles to fclk and pll clock

- clock-names: "fck", "sys_clk"

Optional nodes:

- Video port for DSI output

- DSI controlled peripherals

DSI Endpoint required properties:

- lanes: list of pin numbers for the DSI lanes: CLK+, CLK-, DATA0+, DATA0-,

  DATA1+, DATA1-, ...

HDMI

----

Required properties:

- compatible: "ti,omap5-hdmi"

- reg: addresses and lengths of the register spaces for 'wp', 'pll', 'phy',

       'core'

- reg-names: "wp", "pll", "phy", "core"

- interrupts: the HDMI interrupt line

- ti,hwmods: "dss_hdmi"

- vdda-supply: vdda power supply

- clocks: handles to fclk and pll clock

- clock-names: "fck", "sys_clk"

Optional nodes:

- Video port for HDMI output

HDMI Endpoint optional properties:

- lanes: list of 8 pin numbers for the HDMI lanes: CLK+, CLK-, D0+, D0-,

  D1+, D1-, D2+, D2-. (default: 0,1,2,3,4,5,6,7)