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1820827949
This adds a new DT property to define the current baud rate of the slave device. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
46 lines
1.4 KiB
Plaintext
46 lines
1.4 KiB
Plaintext
Serial Slave Device DT binding
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This documents the binding structure and common properties for serial
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attached devices. Common examples include Bluetooth, WiFi, NFC and GPS
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devices.
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Serial attached devices shall be a child node of the host UART device the
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slave device is attached to. It is expected that the attached device is
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the only child node of the UART device. The slave device node name shall
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reflect the generic type of device for the node.
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Required Properties:
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- compatible : A string reflecting the vendor and specific device the node
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represents.
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Optional Properties:
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- max-speed : The maximum baud rate the device operates at. This should
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only be present if the maximum is less than the slave device
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can support. For example, a particular board has some signal
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quality issue or the host processor can't support higher
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baud rates.
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- current-speed : The current baud rate the device operates at. This should
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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
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way to reset the device
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* device baud rate is configured by its firmware but
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there is no way to request the actual settings
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Example:
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serial@1234 {
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compatible = "ns16550a";
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interrupts = <1>;
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bluetooth {
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compatible = "brcm,bcm43341-bt";
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interrupt-parent = <&gpio>;
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interrupts = <10>;
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};
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};
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