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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.yaml
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

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%YAML 1.2

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---

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$id: http://devicetree.org/schemas/iio/dac/adi,axi-dac.yaml#

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$schema: http://devicetree.org/meta-schemas/core.yaml#

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title: Analog Devices AXI DAC IP core

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maintainers:

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  - Nuno Sa <nuno.sa@analog.com>

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description: |

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  Analog Devices Generic AXI DAC IP core for interfacing a DAC device

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  with a high speed serial (JESD204B/C) or source synchronous parallel

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  interface (LVDS/CMOS).

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  Usually, some other interface type (i.e SPI) is used as a control

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  interface for the actual DAC, while this IP core will interface

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  to the data-lines of the DAC and handle the streaming of data from

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  memory via DMA into the DAC.

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  https://wiki.analog.com/resources/fpga/docs/axi_dac_ip

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  https://analogdevicesinc.github.io/hdl/library/axi_ad3552r/index.html

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properties:

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  compatible:

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    enum:

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      - adi,axi-dac-9.1.b

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      - adi,axi-ad3552r

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  reg:

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    maxItems: 1

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  dmas:

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    maxItems: 1

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  dma-names:

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    items:

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      - const: tx

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  clocks:

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    minItems: 1

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    maxItems: 2

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  clock-names:

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    items:

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      - const: s_axi_aclk

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      - const: dac_clk

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    minItems: 1

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  '#io-backend-cells':

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    const: 0

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required:

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  - compatible

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  - dmas

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  - reg

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  - clocks

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allOf:

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  - if:

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      properties:

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        compatible:

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          contains:

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            const: adi,axi-ad3552r

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    then:

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      $ref: /schemas/spi/spi-controller.yaml#

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      properties:

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        clocks:

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          minItems: 2

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        clock-names:

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          minItems: 2

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      required:

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        - clock-names

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    else:

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      properties:

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        clocks:

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          maxItems: 1

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        clock-names:

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          maxItems: 1

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unevaluatedProperties: false

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examples:

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  - |

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    dac@44a00000 {

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        compatible = "adi,axi-dac-9.1.b";

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        reg = <0x44a00000 0x10000>;

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        dmas = <&tx_dma 0>;

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        dma-names = "tx";

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        #io-backend-cells = <0>;

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        clocks = <&clkc 15>;

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        clock-names = "s_axi_aclk";

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    };

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  - |

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    #include <dt-bindings/gpio/gpio.h>

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    axi_dac: spi@44a70000 {

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        compatible = "adi,axi-ad3552r";

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        reg = <0x44a70000 0x1000>;

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        dmas = <&dac_tx_dma 0>;

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        dma-names = "tx";

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        #io-backend-cells = <0>;

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        clocks = <&clkc 15>, <&ref_clk>;

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        clock-names = "s_axi_aclk", "dac_clk";

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        #address-cells = <1>;

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        #size-cells = <0>;

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        dac@0 {

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            compatible = "adi,ad3552r";

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            reg = <0>;

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            reset-gpios = <&gpio0 92 GPIO_ACTIVE_HIGH>;

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            io-backends = <&axi_dac>;

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            spi-max-frequency = <20000000>;

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            #address-cells = <1>;

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            #size-cells = <0>;

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            channel@0 {

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                reg = <0>;

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                adi,output-range-microvolt = <(-10000000) (10000000)>;

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            };

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        };

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    };

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...

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