omap_serial.txt

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    1 OMAP UART controller
    2 
    3 Required properties:
    4 - compatible : should be "ti,am64-uart", "ti,am654-uart" for AM64 controllers
    5 - compatible : should be "ti,j721e-uart", "ti,am654-uart" for J721E controllers
    6 - compatible : should be "ti,am654-uart" for AM654 controllers
    7 - compatible : should be "ti,omap2-uart" for OMAP2 controllers
    8 - compatible : should be "ti,omap3-uart" for OMAP3 controllers
    9 - compatible : should be "ti,omap4-uart" for OMAP4 controllers
   10 - compatible : should be "ti,am4372-uart" for AM437x controllers
   11 - compatible : should be "ti,am3352-uart" for AM335x controllers
   12 - compatible : should be "ti,dra742-uart" for DRA7x controllers
   13 - reg : address and length of the register space
   14 - interrupts or interrupts-extended : Should contain the uart interrupt
   15                                       specifier or both the interrupt
   16                                       controller phandle and interrupt
   17                                       specifier.
   18 - ti,hwmods : Must be "uart<n>", n being the instance number (1-based)
   19 
   20 Optional properties:
   21 - clock-frequency : frequency of the clock input to the UART
   22 - dmas : DMA specifier, consisting of a phandle to the DMA controller
   23          node and a DMA channel number.
   24 - dma-names : "rx" for receive channel, "tx" for transmit channel.
   25 - rs485-rts-delay, rs485-rx-during-tx, linux,rs485-enabled-at-boot-time: see rs485.txt
   26 - rs485-rts-active-high: drive RTS high when sending (default is low).
   27 - clocks: phandle to the functional clock as per
   28   Documentation/devicetree/bindings/clock/clock-bindings.txt
   29 
   30 Example:
   31 
   32                 uart4: serial@49042000 {
   33                         compatible = "ti,omap3-uart";
   34                         reg = <0x49042000 0x400>;
   35                         interrupts = <80>;
   36                         dmas = <&sdma 81 &sdma 82>;
   37                         dma-names = "tx", "rx";
   38                         ti,hwmods = "uart4";
   39                         clock-frequency = <48000000>;
   40                 };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/serial/omap_serial.txt

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sys/contrib/device-tree/Bindings/serial/omap_serial.txt