From 1e5a74620922646f3ab5c3e90b1709fb51963614 Mon Sep 17 00:00:00 2001 From: Daniel Kaehn Date: Mon, 9 May 2022 09:59:32 -0500 Subject: [PATCH] dt-bindings: sound: Add generic serial MIDI device Adds dt-binding for a Generic MIDI Interface using a serial device. Signed-off-by: Daniel Kaehn Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/20220509145933.1161526-2-kaehndan@gmail.com Signed-off-by: Takashi Iwai --- .../devicetree/bindings/sound/serial-midi.yaml | 51 ++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/serial-midi.yaml diff --git a/Documentation/devicetree/bindings/sound/serial-midi.yaml b/Documentation/devicetree/bindings/sound/serial-midi.yaml new file mode 100644 index 0000000..4afc293 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/serial-midi.yaml @@ -0,0 +1,51 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause + +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/serial-midi.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Generic Serial MIDI Interface + +maintainers: + - Daniel Kaehn + +description: + Generic MIDI interface using a serial device. This denotes that a serial device is + dedicated to MIDI communication, either to an external MIDI device through a DIN5 + or other connector, or to a known hardwired MIDI controller. This device must be a + child node of a serial node. + + Can only be set to use standard baud rates corresponding to supported rates of the + parent serial device. If the standard MIDI baud of 31.25 kBaud is needed + (as would be the case if interfacing with arbitrary external MIDI devices), + configure the clocks of the parent serial device so that a requested baud of 38.4 kBaud + resuts in the standard MIDI baud rate, and set the 'current-speed' property to 38400 (default) + +properties: + compatible: + const: serial-midi + + current-speed: + description: Baudrate to set the serial port to when this MIDI device is opened. + default: 38400 + +required: + - compatible + +additionalProperties: false + +examples: + - | + serial { + midi { + compatible = "serial-midi"; + }; + }; + - | + serial { + midi { + compatible = "serial-midi"; + current-speed = <115200>; + }; + }; -- 2.7.4