bindings/display/mipi-dsi-bus.txt

1 MIPI DSI (Display Serial Interface) busses
6 define the syntax used to represent a DSI bus in a device tree.
8 This document describes DSI bus-specific properties only or defines existing
9 standard properties in the context of the DSI bus.
11 Each DSI host provides a DSI bus. The DSI host controller's node contains a
15 The following assumes that only a single peripheral is connected to a DSI
18 DSI host
22 a DSI host, the following properties apply to a node representing a DSI host.
26   bus. DSI peripherals are addressed using a 2-bit virtual channel number, so
34   conjunction with another DSI host to drive the same peripheral. Hardware
36   to be driven by the same clock. Only the DSI host instance controlling this
39 DSI peripheral
42 Peripherals with DSI as control bus, or no control bus
45 Peripherals with the DSI bus as the primary control bus, or peripherals with
46 no control bus but use the DSI bus to transmit pixel data are represented
47 as child nodes of the DSI host's node. Properties described here apply to all
48 DSI peripherals, but individual bindings may want to define additional,
52 - reg: The virtual channel number of a DSI peripheral. Must be in the range
55 Some DSI peripherals respond to more than a single virtual channel. In that
67 There are peripherals that have I2C/SPI (or some other non-DSI bus) as the
68 primary control bus, but are also connected to a DSI bus (mostly for the data
69 path). Connections between such peripherals and a DSI host can be represented
72 Peripherals that support dual channel DSI
75 Peripherals with higher bandwidth requirements can be connected to 2 DSI
76 busses. Each DSI bus/channel drives some portion of the pixel data (generally
78 The graph bindings should be used to represent the multiple DSI busses that are
79 connected to this peripheral. Each DSI host's output endpoint can be linked to
80 an input endpoint of the DSI peripheral.
87 - (1), (2) and (3) are examples of a DSI host and peripheral on the DSI bus
90   DSI host using of-graph bindings.
91 - (5) is an example of 2 DSI hosts driving a dual-channel DSI peripheral,
207 		 * this DSI instance drives the clock for both the host