u-boot/doc/device-tree-bindings/serial/omap_serial.txt
Thomas Chou 75219d57ef ns16550: replace with binding files from Linux kernel
Replace ns16550.txt with binding files from Linux kernel. As suggested
by Stephen Warren, we should keep the directory structure, filenames,
and file content identical to the bindings in the Linux kernel.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Acked-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-01-25 10:40:03 -05:00

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OMAP UART controller
Required properties:
- compatible : should be "ti,omap2-uart" for OMAP2 controllers
- compatible : should be "ti,omap3-uart" for OMAP3 controllers
- compatible : should be "ti,omap4-uart" for OMAP4 controllers
- compatible : should be "ti,am4372-uart" for AM437x controllers
- compatible : should be "ti,am3352-uart" for AM335x controllers
- compatible : should be "ti,dra742-uart" for DRA7x controllers
- reg : address and length of the register space
- interrupts or interrupts-extended : Should contain the uart interrupt
specifier or both the interrupt
controller phandle and interrupt
specifier.
- ti,hwmods : Must be "uart<n>", n being the instance number (1-based)
Optional properties:
- clock-frequency : frequency of the clock input to the UART
- dmas : DMA specifier, consisting of a phandle to the DMA controller
node and a DMA channel number.
- dma-names : "rx" for receive channel, "tx" for transmit channel.
Example:
uart4: serial@49042000 {
compatible = "ti,omap3-uart";
reg = <0x49042000 0x400>;
interrupts = <80>;
dmas = <&sdma 81 &sdma 82>;
dma-names = "tx", "rx";
ti,hwmods = "uart4";
clock-frequency = <48000000>;
};