On Tue, Jan 14, 2020 at 01:33:28PM +0100, Benjamin Gaignard wrote:
> Convert rs485 binding to yaml style file.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@xxxxxx>
> ---
> Documentation/devicetree/bindings/serial/rs485.txt | 32 +--------------
> .../devicetree/bindings/serial/rs485.yaml | 45 ++++++++++++++++++++++
> 2 files changed, 46 insertions(+), 31 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/serial/rs485.yaml
>
> diff --git a/Documentation/devicetree/bindings/serial/rs485.txt b/Documentation/devicetree/bindings/serial/rs485.txt
> index b92592dff6dd..a7fe93efc4a5 100644
> --- a/Documentation/devicetree/bindings/serial/rs485.txt
> +++ b/Documentation/devicetree/bindings/serial/rs485.txt
> @@ -1,31 +1 @@
> -* RS485 serial communications
> -
> -The RTS signal is capable of automatically controlling line direction for
> -the built-in half-duplex mode.
> -The properties described hereafter shall be given to a half-duplex capable
> -UART node.
> -
> -Optional properties:
> -- rs485-rts-delay: prop-encoded-array <a b> where:
> - * a is the delay between rts signal and beginning of data sent in milliseconds.
> - it corresponds to the delay before sending data.
> - * b is the delay between end of data sent and rts signal in milliseconds
> - it corresponds to the delay after sending data and actual release of the line.
> - If this property is not specified, <0 0> is assumed.
> -- rs485-rts-active-low: drive RTS low when sending (default is high).
> -- linux,rs485-enabled-at-boot-time: empty property telling to enable the rs485
> - feature at boot time. It can be disabled later with proper ioctl.
> -- rs485-rx-during-tx: empty property that enables the receiving of data even
> - while sending data.
> -
> -RS485 example for Atmel USART:
> - usart0: serial@fff8c000 {
> - compatible = "atmel,at91sam9260-usart";
> - reg = <0xfff8c000 0x4000>;
> - interrupts = <7>;
> - atmel,use-dma-rx;
> - atmel,use-dma-tx;
> - linux,rs485-enabled-at-boot-time;
> - rs485-rts-delay = <0 200>; // in milliseconds
> - };
> -
> +See rs485.yaml
> diff --git a/Documentation/devicetree/bindings/serial/rs485.yaml b/Documentation/devicetree/bindings/serial/rs485.yaml
> new file mode 100644
> index 000000000000..65c6a98969a8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/serial/rs485.yaml
> @@ -0,0 +1,45 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/serial/rs485.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: RS485 serial communications Bindings
> +
> +description: The RTS signal is capable of automatically controlling
> + line direction for the built-in half-duplex mode.
> + The properties described hereafter shall be given to a
> + half-duplex capable UART node.
> +
> +maintainers:
> + - Rob Herring <robh@xxxxxxxxxx>
> +
> +properties:
> + rs485-rts-delay:
> + description: prop-encoded-array <a b>
> + allOf:
> + - $ref: /schemas/types.yaml#/definitions/uint32-matrix
> + - items:
> + items:
> + - description:
> + Delay between rts signal and beginning of data sent in milliseconds.
> + It corresponds to the delay before sending data.
> + $ref: "/schemas/types.yaml#/definitions/uint32"
This is not correct. The types only apply to whole properties.
Is there a maximum? Seems like 1 sec would be more than anyone would
ever want?
> + default: 0
> + - description:
> + Delay between end of data sent and rts signal in milliseconds.
> + It corresponds to the delay after sending data and actual release of the line.
> + $ref: "/schemas/types.yaml#/definitions/uint32"
> + default: 0
> +
> + rs485-rts-active-low:
> + description: drive RTS low when sending (default is high).
> + $ref: /schemas/types.yaml#/definitions/flag
> +
> + linux,rs485-enabled-at-boot-time:
> + description: enables the rs485 feature at boot time. It can be disabled later with proper ioctl.
> + $ref: /schemas/types.yaml#/definitions/flag
> +
> + rs485-rx-during-tx:
> + description: enables the receiving of data even while sending data.
> + $ref: /schemas/types.yaml#/definitions/flag
> --
> 2.15.0
>
