From d50f974c4f7fef1b2d1d010f4f81d40e1ad09f8a Mon Sep 17 00:00:00 2001 From: Benjamin Gaignard Date: Wed, 22 Jan 2020 10:55:57 +0100 Subject: [PATCH] dt-bindings: serial: Convert rs485 bindings to json-schema Convert rs485 binding to yaml style file. Signed-off-by: Benjamin Gaignard Signed-off-by: Rob Herring --- 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 b92592d..a7fe93e 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 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 0000000..d4beaf1 --- /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 + +properties: + rs485-rts-delay: + description: prop-encoded-array + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32-array + - items: + items: + - description: + Delay between rts signal and beginning of data sent in milliseconds. + It corresponds to the delay before sending data. + default: 0 + maximum: 1000 + - 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. + default: 0 + maximum: 1000 + + 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 -- 2.7.4