This adds a new binding for a PWM trigger and DMA data output connected to an SPI controller offload instance. Signed-off-by: David Lechner <dlechner@xxxxxxxxxxxx> --- .../adi,spi-offload-pwm-trigger-dma-buffer.yaml | 59 ++++++++++++++++++++++ 1 file changed, 59 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/offload/adi,spi-offload-pwm-trigger-dma-buffer.yaml b/Documentation/devicetree/bindings/iio/offload/adi,spi-offload-pwm-trigger-dma-buffer.yaml new file mode 100644 index 000000000000..748cfab19eff --- /dev/null +++ b/Documentation/devicetree/bindings/iio/offload/adi,spi-offload-pwm-trigger-dma-buffer.yaml @@ -0,0 +1,59 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/offload/adi,spi-offload-pwm-trigger-dma-buffer.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: SPI Offload with PWM Trigger and DMA Buffer Data Output + +maintainers: + - Michael Hennerich <Michael.Hennerich@xxxxxxxxxx> + - Nuno Sá <nuno.sa@xxxxxxxxxx> + +description: | + This binding describes the connection of a PWM device to the trigger input + and a DMA channel to the output data stream of a SPI Offload instance. + + https://wiki.analog.com/resources/fpga/peripherals/spi_engine/offload + https://wiki.analog.com/resources/fpga/peripherals/spi_engine/tutorial + +$ref: /schemas/spi/adi,axi-spi-engine.yaml#/$defs/offload + +properties: + compatible: + const: adi,spi-offload-pwm-trigger-dma-buffer + + reg: + maxItems: 1 + + pwms: + maxItems: 1 + + dmas: + maxItems: 1 + +required: + - compatible + - pwms + - dmas + +unevaluatedProperties: false + +examples: + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + + offloads { + #address-cells = <1>; + #size-cells = <0>; + + offload@0 { + compatible = "adi,spi-offload-pwm-trigger-dma-buffer"; + reg = <0>; + pwms = <&pwm 0>; + dmas = <&dma 0>; + }; + }; + }; -- 2.43.0
