Based on kernel version 5.9
. Page generated on 2020-10-14 09:35 EST
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | * Freescale i.MX Universal Asynchronous Receiver/Transmitter (UART) Required properties: - compatible : Should be "fsl,<soc>-uart" - reg : Address and length of the register set for the device - interrupts : Should contain uart interrupt Optional properties: - fsl,dte-mode : Indicate the uart works in DTE mode. The uart works in DCE mode by default. - fsl,inverted-tx , fsl,inverted-rx : Indicate that the hardware attached to the peripheral inverts the signal transmitted or received, respectively, and that the peripheral should invert its output/input using the INVT/INVR registers. - rs485-rts-delay, rs485-rts-active-low, rs485-rx-during-tx, linux,rs485-enabled-at-boot-time: see rs485.txt. Note that for RS485 you must enable either the "uart-has-rtscts" or the "rts-gpios" properties. In case you use "uart-has-rtscts" the signal that controls the transceiver is actually CTS_B, not RTS_B. CTS_B is always output, and RTS_B is input, regardless of dte-mode. Please check Documentation/devicetree/bindings/serial/serial.yaml for the complete list of generic properties. Note: Each uart controller should have an alias correctly numbered in "aliases" node. Example: aliases { serial0 = &uart1; }; uart1: serial@73fbc000 { compatible = "fsl,imx51-uart", "fsl,imx21-uart"; reg = <0x73fbc000 0x4000>; interrupts = <31>; uart-has-rtscts; fsl,dte-mode; }; |