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* Freescale i.MX Universal Asynchronous Receiver/Transmitter (UART)
Required properties:
- compatible : Should be "fsl,<soc>-uart"
- reg : Address and length of the register set for the device
- interrupts : Should contain uart interrupt
Optional properties:
- fsl,dte-mode : Indicate the uart works in DTE mode. The uart works
in DCE mode by default.
- fsl,inverted-tx , fsl,inverted-rx : Indicate that the hardware attached
to the peripheral inverts the signal transmitted or received,
respectively, and that the peripheral should invert its output/input
using the INVT/INVR registers.
- rs485-rts-delay, rs485-rts-active-low, rs485-rx-during-tx,
linux,rs485-enabled-at-boot-time: see rs485.txt. Note that for RS485
you must enable either the "uart-has-rtscts" or the "rts-gpios"
properties. In case you use "uart-has-rtscts" the signal that controls
the transceiver is actually CTS_B, not RTS_B. CTS_B is always output,
and RTS_B is input, regardless of dte-mode.
Please check Documentation/devicetree/bindings/serial/serial.txt
for the complete list of generic properties.
Note: Each uart controller should have an alias correctly numbered
in "aliases" node.
Example:
aliases {
serial0 = &uart1;
};
uart1: serial@73fbc000 {
compatible = "fsl,imx51-uart", "fsl,imx21-uart";
reg = <0x73fbc000 0x4000>;
interrupts = <31>;
uart-has-rtscts;
fsl,dte-mode;
};
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