This adds a binding specification for the Analog Devices Inc. AD7625, AD7626, AD7960, and AD7961 ADCs. Signed-off-by: Trevor Gamblin <tgamblin@xxxxxxxxxxxx> --- .../devicetree/bindings/iio/adc/adi,ad7625.yaml | 176 +++++++++++++++++++++ MAINTAINERS | 9 ++ 2 files changed, 185 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7625.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7625.yaml new file mode 100644 index 000000000000..e88db0ac2534 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7625.yaml @@ -0,0 +1,176 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/adi,ad7625.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices Fast PulSAR Analog to Digital Converters + +maintainers: + - Michael Hennerich <Michael.Hennerich@xxxxxxxxxx> + - Nuno Sá <nuno.sa@xxxxxxxxxx> + +description: | + A family of single channel differential analog to digital converters + in a LFCSP package. Note that these bindings are for the device when + used with the PulSAR LVDS project: + http://analogdevicesinc.github.io/hdl/projects/pulsar_lvds/index.html. + + * https://www.analog.com/en/products/ad7625.html + * https://www.analog.com/en/products/ad7626.html + * https://www.analog.com/en/products/ad7960.html + * https://www.analog.com/en/products/ad7961.html + +properties: + compatible: + enum: + - adi,ad7625 + - adi,ad7626 + - adi,ad7960 + - adi,ad7961 + + vdd1-supply: + description: A supply that powers the analog and digital circuitry. + + vdd2-supply: + description: A supply that powers the analog and digital circuitry. + + vio-supply: + description: A supply for the inputs and outputs. + + ref-supply: + description: + Voltage regulator for the external reference voltage (REF). + + refin-supply: + description: + Voltage regulator for the reference buffer input (REFIN). + + clocks: + description: + The clock connected to the CLK pins, gated by the clk_gate PWM. + maxItems: 1 + + pwms: + maxItems: 2 + + pwm-names: + maxItems: 2 + items: + - const: cnv + description: PWM connected to the CNV input on the ADC. + - const: clk_gate + description: PWM that gates the clock connected to the ADC's CLK input. + + io-backends: + description: + The AXI ADC IP block connected to the D+/- and DCO+/- lines of the ADC. + maxItems: 1 + + adi,en0-always-on: + $ref: /schemas/types.yaml#/definitions/flag + description: + Indicates if EN0 is hard-wired to the high state. If neither this + nor en0-gpios are present, then EN0 is hard-wired low. + + adi,en1-always-on: + $ref: /schemas/types.yaml#/definitions/flag + description: + Indicates if EN1 is hard-wired to the high state. If neither this + nor en1-gpios are present, then EN1 is hard-wired low. + + adi,en2-always-on: + $ref: /schemas/types.yaml#/definitions/flag + description: + Indicates if EN2 is hard-wired to the high state. If neither this + nor en2-gpios are present, then EN2 is hard-wired low. + + adi,en3-always-on: + $ref: /schemas/types.yaml#/definitions/flag + description: + Indicates if EN3 is hard-wired to the high state. If neither this + nor en3-gpios are present, then EN3 is hard-wired low. + + en0-gpios: + description: + Configurable EN0 pin. + + en1-gpios: + description: + Configurable EN1 pin. + + en2-gpios: + description: + Configurable EN2 pin. + + en3-gpios: + description: + Configurable EN3 pin. + +required: + - compatible + - vdd1-supply + - vdd2-supply + - vio-supply + - clocks + - pwms + - pwm-names + - io-backends + +- if: + properties: + compatible: + contains: + enum: + - adi,ad7625 + - adi,ad7626 + then: + properties: + en2-gpios: false + en3-gpios: false + adi,en2-always-on: false + adi,en3-always-on: false + allOf: + # ref-supply and refin-supply are mutually-exclusive (neither is also + # valid) + - if: + required: + - ref-supply + then: + properties: + refin-supply: false + - if: + required: + - refin-supply + then: + properties: + ref-supply: false + +- if: + properties: + compatible: + contains: + enum: + - adi,ad7960 + - adi,ad7961 + then: + oneOf: + required: + - ref-supply + required: + - refin-supply + +additionalProperties: false + +examples: + - | + adc { + compatible = "adi,ad7625"; + vdd1-supply = <&supply_5V>; + vdd2-supply = <&supply_2_5V>; + vio-supply = <&supply_2_5V>; + io-backends = <&axi_adc>; + clock = <&ref_clk>; + pwms = <&axi_pwm_gen 0 0>, <&axi_pwm_gen 1 0>; + pwm-names = "cnv", "clk_gate"; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 42decde38320..2361f92751dd 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1260,6 +1260,15 @@ F: Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml F: drivers/iio/addac/ad74413r.c F: include/dt-bindings/iio/addac/adi,ad74413r.h +ANALOG DEVICES INC AD7625 DRIVER +M: Michael Hennerich <Michael.Hennerich@xxxxxxxxxx> +M: Nuno Sá <nuno.sa@xxxxxxxxxx> +R: Trevor Gamblin <tgamblin@xxxxxxxxxxxx> +S: Supported +W: https://ez.analog.com/linux-software-drivers +W: http://analogdevicesinc.github.io/hdl/projects/pulsar_lvds/index.html +F: Documentation/devicetree/bindings/iio/adc/adi,ad7625.yaml + ANALOG DEVICES INC AD7768-1 DRIVER M: Michael Hennerich <Michael.Hennerich@xxxxxxxxxx> L: linux-iio@xxxxxxxxxxxxxxx -- 2.39.2
