Add bindings for the NI 16550 UART. Signed-off-by: Brenda Streiff <brenda.streiff@xxxxxx> Cc: Gratian Crisan <gratian.crisan@xxxxxx> Cc: Jason Smith <jason.smith@xxxxxx> --- .../bindings/serial/ni,ni16550.yaml | 64 +++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 Documentation/devicetree/bindings/serial/ni,ni16550.yaml diff --git a/Documentation/devicetree/bindings/serial/ni,ni16550.yaml b/Documentation/devicetree/bindings/serial/ni,ni16550.yaml new file mode 100644 index 000000000000..93b88c8206b9 --- /dev/null +++ b/Documentation/devicetree/bindings/serial/ni,ni16550.yaml @@ -0,0 +1,64 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/serial/ni,ni16550.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NI 16550 asynchronous serial interface (UART) + +maintainers: + - Brenda Streiff <brenda.streiff@xxxxxx> + +allOf: + - $ref: serial.yaml# + +properties: + compatible: + const: ni,ni16550 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-names: + items: + - const: baudclk + + # legacy clock property; prefer 'clocks' instead + clock-frequency: true + + ni,serial-port-mode: + description: Indicates whether this is an RS-232 or RS-485 serial port. + $ref: /schemas/types.yaml#/definitions/string + enum: [ RS-232, RS-485 ] + default: RS-485 + +required: + - compatible + - reg + - interrupts + +unevaluatedProperties: false + +examples: + - | + serial@80000000 { + compatible = "ni,ni16550"; + reg = <0x80000000 0x8>; + interrupts = <0 30 4>; + clock-names = "baudclk"; + clocks = <&clk_uart>; + ni,serial-port-mode = "RS-232"; + }; + + clk_uart: clock { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <58824000>; + }; +... -- 2.30.2
