Resguardo inicial

linux-7.2.3/Documentation/devicetree/bindings/serial/serial-peripheral-props.yaml

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+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/serial/serial-peripheral-props.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Common Properties for Serial-attached Devices
+
+maintainers:
+  - Rob Herring <robh@kernel.org>
+  - Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+description:
+  Devices connected over serial/UART, expressed as children of a serial
+  controller, might need similar properties, e.g. for configuring the baud
+  rate.
+
+properties:
+  max-speed:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      The maximum baud rate the device operates at.
+      This should only be present if the maximum is less than the slave
+      device can support.  For example, a particular board has some
+      signal quality issue or the host processor can't support higher
+      baud rates.
+
+  current-speed:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      The current baud rate the device operates at.
+      This should only be present in case a driver has no chance to know
+      the baud rate of the slave device.
+      Examples:
+        * device supports auto-baud
+        * the rate is setup by a bootloader and there is no way to reset
+          the device
+        * device baud rate is configured by its firmware but there is no
+          way to request the actual settings
+
+additionalProperties: true