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dt-bindings: serial: document fsl,inverted-tx and -rx options

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Add a description for the new fsl,inverted-tx and fsl,inverted-rx
options for the i.MX UART peripheral.

Signed-off-by: George Hilliard <ghilliard@kopismobile.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200226222319.18383-2-ghilliard@kopismobile.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
George Hilliard 2020-02-26 16:23:18 -06:00 committed by Greg Kroah-Hartman
parent 9be1064fe5
commit 9dd5185a20
1 changed files with 4 additions and 0 deletions
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Documentation/devicetree/bindings/serial/fsl-imx-uart.txt
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@ -8,6 +8,10 @@ Required properties:
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"