37 lines
1.7 KiB
Plaintext
37 lines
1.7 KiB
Plaintext
OMAP UART controller
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Required properties:
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- compatible : should be "ti,am654-uart" for AM654 controllers
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- compatible : should be "ti,omap2-uart" for OMAP2 controllers
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- compatible : should be "ti,omap3-uart" for OMAP3 controllers
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- compatible : should be "ti,omap4-uart" for OMAP4 controllers
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- compatible : should be "ti,am4372-uart" for AM437x controllers
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- compatible : should be "ti,am3352-uart" for AM335x controllers
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- compatible : should be "ti,dra742-uart" for DRA7x controllers
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- reg : address and length of the register space
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- interrupts or interrupts-extended : Should contain the uart interrupt
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specifier or both the interrupt
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controller phandle and interrupt
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specifier.
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- ti,hwmods : Must be "uart<n>", n being the instance number (1-based)
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Optional properties:
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- clock-frequency : frequency of the clock input to the UART
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- dmas : DMA specifier, consisting of a phandle to the DMA controller
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node and a DMA channel number.
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- dma-names : "rx" for receive channel, "tx" for transmit channel.
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- rs485-rts-delay, rs485-rx-during-tx, linux,rs485-enabled-at-boot-time: see rs485.txt
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- rs485-rts-active-high: drive RTS high when sending (default is low).
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Example:
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uart4: serial@49042000 {
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compatible = "ti,omap3-uart";
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reg = <0x49042000 0x400>;
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interrupts = <80>;
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dmas = <&sdma 81 &sdma 82>;
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dma-names = "tx", "rx";
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ti,hwmods = "uart4";
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clock-frequency = <48000000>;
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};
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