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dt-bindings: serial: document rs485 bindings for various devices

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Atmel USART, Freescale UARTs and OMAP UART all support the rs485 binding
described in rs485.txt, this commit just makes that explicit.

Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Uwe Kleine-König 2017-09-20 14:29:36 +02:00 committed by Greg Kroah-Hartman
parent de9e33bdfa
commit 4038e3483c
4 changed files with 4 additions and 0 deletions
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1
Documentation/devicetree/bindings/serial/atmel-usart.txt
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@ -24,6 +24,7 @@ Optional properties:
- dma-names: "rx" for RX channel, "tx" for TX channel.
- atmel,fifo-size: maximum number of data the RX and TX FIFOs can store for FIFO
capable USARTs.
- rs485-rts-delay, rs485-rx-during-tx, linux,rs485-enabled-at-boot-time: see rs485.txt
<chip> compatible description:
- at91rm9200: legacy USART support

1
Documentation/devicetree/bindings/serial/fsl-imx-uart.txt
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@ -9,6 +9,7 @@ Optional properties:
- fsl,irda-mode : Indicate the uart supports irda mode
- fsl,dte-mode : Indicate the uart works in DTE mode. The uart works
in DCE mode by default.
- rs485-rts-delay, rs485-rx-during-tx, linux,rs485-enabled-at-boot-time: see rs485.txt
Please check Documentation/devicetree/bindings/serial/serial.txt
for the complete list of generic properties.

1
Documentation/devicetree/bindings/serial/fsl-lpuart.txt
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@ -16,6 +16,7 @@ Required properties:
Optional properties:
- dmas: A list of two dma specifiers, one for each entry in dma-names.
- dma-names: should contain "tx" and "rx".
- rs485-rts-delay, rs485-rx-during-tx, linux,rs485-enabled-at-boot-time: see rs485.txt
Note: Optional properties for DMA support. Write them both or both not.

1
Documentation/devicetree/bindings/serial/omap_serial.txt
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@ -19,6 +19,7 @@ Optional properties:
- dmas : DMA specifier, consisting of a phandle to the DMA controller
node and a DMA channel number.
- dma-names : "rx" for receive channel, "tx" for transmit channel.
- rs485-rts-delay, rs485-rx-during-tx, linux,rs485-enabled-at-boot-time: see rs485.txt
Example: