| 123456789101112131415161718192021222324252627282930313233343536 |
- OMAP UART controller
- Required properties:
- - compatible : should be "ti,am654-uart" for AM654 controllers
- - 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.
- - rs485-rts-delay, rs485-rx-during-tx, linux,rs485-enabled-at-boot-time: see rs485.txt
- - rs485-rts-active-high: drive RTS high when sending (default is low).
- 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>;
- };
|
