1 # SPDX-License-Identifier: GPL-2.0-only OR BSD 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/serial/seri 4 $id: http://devicetree.org/schemas/serial/serial-peripheral-props.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Common Properties for Serial-attached D 7 title: Common Properties for Serial-attached Devices
8 8
9 maintainers: 9 maintainers:
10 - Rob Herring <robh@kernel.org> 10 - Rob Herring <robh@kernel.org>
11 - Greg Kroah-Hartman <gregkh@linuxfoundation. 11 - Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 12
13 description: 13 description:
14 Devices connected over serial/UART, expresse 14 Devices connected over serial/UART, expressed as children of a serial
15 controller, might need similar properties, e 15 controller, might need similar properties, e.g. for configuring the baud
16 rate. 16 rate.
17 17
18 properties: 18 properties:
19 max-speed: 19 max-speed:
20 $ref: /schemas/types.yaml#/definitions/uin 20 $ref: /schemas/types.yaml#/definitions/uint32
21 description: 21 description:
22 The maximum baud rate the device operate 22 The maximum baud rate the device operates at.
23 This should only be present if the maxim 23 This should only be present if the maximum is less than the slave
24 device can support. For example, a part 24 device can support. For example, a particular board has some
25 signal quality issue or the host process 25 signal quality issue or the host processor can't support higher
26 baud rates. 26 baud rates.
27 27
28 current-speed: 28 current-speed:
29 $ref: /schemas/types.yaml#/definitions/uin 29 $ref: /schemas/types.yaml#/definitions/uint32
30 description: | 30 description: |
31 The current baud rate the device operate 31 The current baud rate the device operates at.
32 This should only be present in case a dr 32 This should only be present in case a driver has no chance to know
33 the baud rate of the slave device. 33 the baud rate of the slave device.
34 Examples: 34 Examples:
35 * device supports auto-baud 35 * device supports auto-baud
36 * the rate is setup by a bootloader an 36 * the rate is setup by a bootloader and there is no way to reset
37 the device 37 the device
38 * device baud rate is configured by it 38 * device baud rate is configured by its firmware but there is no
39 way to request the actual settings 39 way to request the actual settings
40 40
41 additionalProperties: true 41 additionalProperties: true
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