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Commit 239078da authored by Fabio Estevam's avatar Fabio Estevam Committed by Rob Herring
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devicetree: serial: Add documentation for imx serial



Add documentation for imx serial.

Signed-off-by: default avatarFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: default avatarRob Herring <rob.herring@calxeda.com>
parent 7185fcc6
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* Freescale i.MX UART controller

Required properties:
- compatible : should be "fsl,imx21-uart"
- reg : Address and length of the register set for the device
- interrupts : Should contain UART interrupt number

Optional properties:
- fsl,uart-has-rtscts: indicate that RTS/CTS signals are used

Note: Each uart controller should have an alias correctly numbered
in "aliases" node.

Example:

- From imx51.dtsi:
aliases {
	serial0 = &uart1;
	serial1 = &uart2;
	serial2 = &uart3;
};

uart1: serial@73fbc000 {
	compatible = "fsl,imx51-uart", "fsl,imx21-uart";
	reg = <0x73fbc000 0x4000>;
	interrupts = <31>;
	status = "disabled";
}

- From imx51-babbage.dts:
uart1: serial@73fbc000 {
	fsl,uart-has-rtscts;
	status = "okay";
};