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Pull devicetree updates from Rob Herring: - Unit test for overlays with GPIO hogs - Improve dma-ranges parsing to handle dma-ranges with multiple entries - Update dtc to upstream version v1.6.0-2-g87a656ae5ff9 - Improve overlay error reporting - Device link support for power-domains and hwlocks bindings - Add vendor prefixes for Beacon, Topwise, ENE, Dell, SG Micro, Elida, PocketBook, Xiaomi, Linutronix, OzzMaker, Waveshare Electronics, and ITE Tech - Add deprecated Marvell vendor prefix 'mrvl' - A bunch of binding conversions to DT schema continues. Of note, the common serial and USB connector bindings are converted. - Add more Arm CPU compatibles - Drop Mark Rutland as DT maintainer :( * tag 'devicetree-for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (106 commits) MAINTAINERS: drop an old reference to stm32 pwm timers doc MAINTAINERS: dt: update etnaviv file reference dt-bindings: usb: dwc2: fix bindings for amlogic, meson-gxbb-usb dt-bindings: uniphier-system-bus: fix warning in the example dt-bindings: display: meson-vpu: fix indentation of reg-names' "items" dt-bindings: iio: Fix adi, ltc2983 uint64-matrix schema constraints dt-bindings: power: Fix example for power-domain dt-bindings: arm: Add some constraints for PSCI nodes of: some unittest overlays not untracked of: gpio unittest kfree() wrong object dt-bindings: phy: convert phy-rockchip-inno-usb2 bindings to yaml dt-bindings: serial: sh-sci: Convert to json-schema dt-bindings: serial: Document serialN aliases dt-bindings: thermal: tsens: Set 'additionalProperties: false' dt-bindings: thermal: tsens: Fix nvmem-cell-names schema dt-bindings: vendor-prefixes: Add Beacon vendor prefix dt-bindings: vendor-prefixes: Add Topwise of: of_private.h: Replace zero-length array with flexible-array member docs: dt: fix a broken reference to input.yaml docs: dt: fix references to ap806-system-controller.txt ...
41 lines
1.4 KiB
Plaintext
41 lines
1.4 KiB
Plaintext
* Freescale i.MX Universal Asynchronous Receiver/Transmitter (UART)
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Required properties:
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- compatible : Should be "fsl,<soc>-uart"
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- reg : Address and length of the register set for the device
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- interrupts : Should contain uart interrupt
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Optional properties:
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- fsl,dte-mode : Indicate the uart works in DTE mode. The uart works
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in DCE mode by default.
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- fsl,inverted-tx , fsl,inverted-rx : Indicate that the hardware attached
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to the peripheral inverts the signal transmitted or received,
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respectively, and that the peripheral should invert its output/input
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using the INVT/INVR registers.
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- rs485-rts-delay, rs485-rts-active-low, rs485-rx-during-tx,
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linux,rs485-enabled-at-boot-time: see rs485.txt. Note that for RS485
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you must enable either the "uart-has-rtscts" or the "rts-gpios"
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properties. In case you use "uart-has-rtscts" the signal that controls
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the transceiver is actually CTS_B, not RTS_B. CTS_B is always output,
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and RTS_B is input, regardless of dte-mode.
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Please check Documentation/devicetree/bindings/serial/serial.yaml
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for the complete list of generic properties.
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Note: Each uart controller should have an alias correctly numbered
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in "aliases" node.
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Example:
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aliases {
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serial0 = &uart1;
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};
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uart1: serial@73fbc000 {
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compatible = "fsl,imx51-uart", "fsl,imx21-uart";
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reg = <0x73fbc000 0x4000>;
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interrupts = <31>;
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uart-has-rtscts;
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fsl,dte-mode;
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};
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