Doc/DT: Add DT binding documentation for OMAP DSS

Add device tree bindings for OMAP Display Subsystem for the following
SoCs: OMAP2, OMAP3, OMAP4.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>

1 files changed, 111 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/video/ti,omap4-dss.txt b/Documentation/devicetree/bindings/video/ti,omap4-dss.txt
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+Texas Instruments OMAP4 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,omap4-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, VENC, DSI, HDMI
+- Video port for DPI output
+
+DPI Endpoint required properties:
+- data-lines: number of lines used
+
+
+DISPC
+-----
+
+Required properties:
+- compatible: "ti,omap4-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,omap4-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
+
+
+VENC
+----
+
+Required properties:
+- compatible: "ti,omap4-venc"
+- reg: address and length of the register space
+- ti,hwmods: "dss_venc"
+- vdda-supply: power supply for DAC
+- clocks: handle to fclk
+- clock-names: "fck"
+
+Optional nodes:
+- Video port for VENC output
+
+VENC Endpoint required properties:
+- ti,invert-polarity: invert the polarity of the video signal
+- ti,channels: 1 for composite, 2 for s-video
+
+
+DSI
+---
+
+Required properties:
+- compatible: "ti,omap4-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,omap4-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