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The ROHM BD79100, BD79101, BD79102, BD79103 are very similar ADCs as the ROHM BD79104. The BD79100 has only 1 channel. BD79101 has 2 channels and the BD79102 has 4 channels. Both BD79103 and BD79104 have 4 channels, and, based on the data sheets, they seem identical from the software point-of-view. Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com> Acked-by: Conor Dooley <conor.dooley@microchip.com> Reviewed-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/0874c5933cf56430b9440d19ff46f746e4897952.1755504346.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
77 lines
1.6 KiB
YAML
77 lines
1.6 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/iio/adc/rohm,bd79104.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: ROHM Semiconductor BD79104 ADC
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maintainers:
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- Matti Vaittinen <mazziesaccount@gmail.com>
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description: |
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12 bit SPI ADC with 8 channels.
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properties:
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compatible:
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oneOf:
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- enum:
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- rohm,bd79100
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- rohm,bd79101
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- rohm,bd79102
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- rohm,bd79104
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- items:
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- const: rohm,bd79103
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- const: rohm,bd79104
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reg:
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maxItems: 1
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vdd-supply: true
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iovdd-supply: true
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# The component data-sheet says the frequency is 20M. I, however, found
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# that the ROHM evaluation board BD79104FV-EVK-001 had problems with 20M.
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# I have successfully used it with 4M. My _assumption_ is that this is not
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# the limitation of the component itself, but a limitation of the EVK.
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spi-max-frequency:
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maximum: 20000000
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"#io-channel-cells":
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const: 1
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spi-cpha: true
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spi-cpol: true
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required:
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- compatible
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- reg
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- vdd-supply
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- iovdd-supply
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- spi-cpha
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- spi-cpol
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allOf:
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- $ref: /schemas/spi/spi-peripheral-props.yaml#
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unevaluatedProperties: false
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examples:
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- |
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spi {
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#address-cells = <1>;
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#size-cells = <0>;
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adc@0 {
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compatible = "rohm,bd79104";
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reg = <0>;
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vdd-supply = <&vdd_supply>;
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iovdd-supply = <&iovdd_supply>;
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spi-max-frequency = <4000000>;
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spi-cpha;
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spi-cpol;
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#io-channel-cells = <1>;
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};
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};
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...
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