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89b96e3244
Properties should be defined in only one place, thus add new serial-peripheral-props.yaml schema with definition of common properties for UART-connected devices (children of UART controller): current-speed and max-speed. The schema can be referenced by individual devices using these properties. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20240811-dt-bindings-serial-peripheral-props-v1-2-1dba258b7492@linaro.org Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
42 lines
1.4 KiB
YAML
42 lines
1.4 KiB
YAML
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/serial/serial-peripheral-props.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Common Properties for Serial-attached Devices
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maintainers:
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- Rob Herring <robh@kernel.org>
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- Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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description:
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Devices connected over serial/UART, expressed as children of a serial
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controller, might need similar properties, e.g. for configuring the baud
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rate.
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properties:
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max-speed:
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$ref: /schemas/types.yaml#/definitions/uint32
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description:
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The maximum baud rate the device operates at.
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This should only be present if the maximum is less than the slave
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device can support. For example, a particular board has some
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signal quality issue or the host processor can't support higher
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baud rates.
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current-speed:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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The current baud rate the device operates at.
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This should only be present in case a driver has no chance to know
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the baud rate of the slave device.
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Examples:
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* device supports auto-baud
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* the rate is setup by a bootloader and there is no way to reset
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the device
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* device baud rate is configured by its firmware but there is no
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way to request the actual settings
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additionalProperties: true
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