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Message-ID: <f2829559be51bb7b0bad015236efdba12a2bc63e.1731953012.git.marcelo.schmitt@analog.com>
Date: Mon, 18 Nov 2024 15:52:33 -0300
From: Marcelo Schmitt <marcelo.schmitt@...log.com>
To: <lars@...afoo.de>, <Michael.Hennerich@...log.com>,
<marcelo.schmitt@...log.com>, <jic23@...nel.org>, <robh@...nel.org>,
<krzk+dt@...nel.org>, <conor+dt@...nel.org>,
<marcelo.schmitt1@...il.com>
CC: <linux-iio@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>
Subject: [PATCH v2 1/4] dt-bindings: iio: adc: adi,ad4000: Add PulSAR
Extend the AD4000 series device tree documentation to also describe
PulSAR devices.
Signed-off-by: Marcelo Schmitt <marcelo.schmitt@...log.com>
---
Changes v1 -> v2
- Made "cs" the default adi,sdi-pin value for PulSAR devices.
- Dropped AD7694 and the related vio pin checks.
I forgot the ad4000 driver fails if VIO is not provided so I was wrong when I
said AD7694 was software compatible with the other ADCs.
I see now AD7694 also doesn't have SDI pin.
Aside from the VIO and SDI pins, AD7694 is similar to AD7685 both being 16-bit
precision 250kSPS pseudo-differential ADCs.
The AD7683 part mentioned in v1 discussion is similar to AD7988-1, both 16-bit
pseudo-differential 100kSPS.
To avoid complicating things, I dropped support for AD7694.
AD7685 and AD7988-1 are the parts with features similar to AD7694 and AD7683,
respectively.
.../bindings/iio/adc/adi,ad4000.yaml | 71 +++++++++++++++++++
1 file changed, 71 insertions(+)
diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad4000.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad4000.yaml
index e413a9d8d2a2..4dbb3d2876f9 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad4000.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad4000.yaml
@@ -19,6 +19,20 @@ description: |
https://www.analog.com/media/en/technical-documentation/data-sheets/ad4020-4021-4022.pdf
https://www.analog.com/media/en/technical-documentation/data-sheets/adaq4001.pdf
https://www.analog.com/media/en/technical-documentation/data-sheets/adaq4003.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7685.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7686.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7687.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7688.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7690.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7691.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7693.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7942.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7946.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7980.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7982.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7983.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7984.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7988-1_7988-5.pdf
$ref: /schemas/spi/spi-peripheral-props.yaml#
@@ -63,6 +77,37 @@ properties:
- const: adi,adaq4003
+ - const: adi,ad7946
+ - items:
+ - enum:
+ - adi,ad7942
+ - const: adi,ad7946
+
+ - const: adi,ad7983
+ - items:
+ - enum:
+ - adi,ad7980
+ - adi,ad7988-5
+ - adi,ad7686
+ - adi,ad7685
+ - adi,ad7988-1
+ - const: adi,ad7983
+
+ - const: adi,ad7688
+ - items:
+ - enum:
+ - adi,ad7693
+ - adi,ad7687
+ - const: adi,ad7688
+
+ - const: adi,ad7984
+ - items:
+ - enum:
+ - adi,ad7982
+ - adi,ad7690
+ - adi,ad7691
+ - const: adi,ad7984
+
reg:
maxItems: 1
@@ -133,6 +178,32 @@ required:
- ref-supply
allOf:
+ # Single-channel PulSAR devices have SDI either tied to VIO, GND, or host CS.
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - adi,ad7685
+ - adi,ad7686
+ - adi,ad7687
+ - adi,ad7688
+ - adi,ad7690
+ - adi,ad7691
+ - adi,ad7693
+ - adi,ad7942
+ - adi,ad7946
+ - adi,ad7980
+ - adi,ad7982
+ - adi,ad7983
+ - adi,ad7984
+ - adi,ad7988-1
+ - adi,ad7988-5
+ then:
+ properties:
+ adi,sdi-pin:
+ enum: [ high, low, cs ]
+ default: cs
# The configuration register can only be accessed if SDI is connected to MOSI
- if:
required:
--
2.45.2
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