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dt-bindings: Add ROHM BD7970x variants

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The ROHM BD79700, BD79701 and BD79702 are subsets of the BD79703 DAC.
The main difference is the number of the channels. BD79703 has 6
channels.

The BD79702 has 4, BD79701 3 and BD79700 2 channels. Additionally, the
BD79700 and BD79701 do not have separate Vfs pin but use the Vcc also
for the full-scale voltage.

Add properties for the BD79700, BD79701 and BD79702.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/0a114565e4de52bf8f98c4f9d17943e5148b0112.1743576022.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Matti Vaittinen 2025-04-02 09:44:36 +03:00 committed by Jonathan Cameron
parent 1850e6ae7f
commit 04f0bc81d6
1 changed files with 26 additions and 7 deletions
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33
Documentation/devicetree/bindings/iio/dac/rohm,bd79703.yaml
View File

@ -5,19 +5,26 @@
$id: http://devicetree.org/schemas/iio/dac/rohm,bd79703.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ROHM BD79703 DAC device driver
title: ROHM BD79700, BD79701, BD79702 and BD79703 DACs
maintainers:
- Matti Vaittinen <mazziesaccount@gmail.com>
description: |
The ROHM BD79703 is a 6 channel, 8-bit DAC.
Datasheet can be found here:
The ROHM BD7970[0,1,2,3] are 8-bit DACs. The BD79700 has 2 channels,
BD79701 3 channels, BD79702 4 channels and BD79703 has 6 channels.
Datasheets for BD79702 and BD79703 can be found from
https://fscdn.rohm.com/en/products/databook/datasheet/ic/data_converter/dac/bd79702fv-lb_bd79703fv-lb-e.pdf
and for the BD79700 and the BD79701 from
https://fscdn.rohm.com/en/products/databook/datasheet/ic/data_converter/dac/bd79700fvm-lb_bd79701fvm-lb-e.pdf
properties:
compatible:
const: rohm,bd79703
enum:
- rohm,bd79700
- rohm,bd79701
- rohm,bd79702
- rohm,bd79703
reg:
maxItems: 1
@ -27,19 +34,31 @@ properties:
vfs-supply:
description:
The regulator to use as a full scale voltage. The voltage should be between 2.7V .. VCC
The regulator to use as a full scale voltage. The voltage should be
between 2.7V .. VCC. Not present on BD79700 and BD79701.
vcc-supply:
description:
The regulator supplying the operating voltage. Should be between 2.7V ... 5.5V
The regulator supplying the operating voltage. Should be between
2.7V ... 5.5V. Is used also as a Vfs on BD79700 and BD79701.
required:
- compatible
- reg
- spi-max-frequency
- vfs-supply
- vcc-supply
if:
properties:
compatible:
contains:
enum:
- rohm,bd79702
- rohm,bd79703
then:
required:
- vfs-supply
allOf:
- $ref: /schemas/spi/spi-peripheral-props.yaml#