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Message-Id: <20240417170054.140587-5-alisa.roman@analog.com>
Date: Wed, 17 Apr 2024 20:00:53 +0300
From: Alisa-Dariana Roman <alisadariana@...il.com>
To: michael.hennerich@...log.com,
linux-iio@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: alexandru.tachici@...log.com,
lars@...afoo.de,
Michael.Hennerich@...log.com,
jic23@...nel.org,
robh@...nel.org,
krzysztof.kozlowski+dt@...aro.org,
conor+dt@...nel.org,
lgirdwood@...il.com,
broonie@...nel.org,
andy@...nel.org,
nuno.sa@...log.com,
marcelo.schmitt@...log.com,
bigunclemax@...il.com,
dlechner@...libre.com,
okan.sahin@...log.com,
fr0st61te@...il.com,
alisa.roman@...log.com,
marcus.folkesson@...il.com,
schnelle@...ux.ibm.com,
liambeguin@...il.com
Subject: [PATCH v6 4/5] dt-bindings: iio: adc: ad7192: Add AD7194 support
Unlike the other AD719Xs, AD7194 has configurable differential
channels. The user can dynamically configure them in the devicetree.
Also add an example for AD7194 devicetree.
Signed-off-by: Alisa-Dariana Roman <alisa.roman@...log.com>
---
.../bindings/iio/adc/adi,ad7192.yaml | 77 +++++++++++++++++++
1 file changed, 77 insertions(+)
diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
index cf5c568f140a..7e4e15e4e648 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
@@ -21,8 +21,15 @@ properties:
- adi,ad7190
- adi,ad7192
- adi,ad7193
+ - adi,ad7194
- adi,ad7195
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 0
+
reg:
maxItems: 1
@@ -89,6 +96,30 @@ properties:
description: see Documentation/devicetree/bindings/iio/adc/adc.yaml
type: boolean
+patternProperties:
+ "^channel@[0-9a-z]+$":
+ type: object
+ $ref: adc.yaml
+ unevaluatedProperties: false
+
+ properties:
+ reg:
+ description: The channel index.
+ minimum: 1
+ maximum: 256
+
+ diff-channels:
+ description: |
+ Both inputs can be connected to pins AIN1 to AIN16 by choosing the
+ appropriate value from 1 to 16.
+ items:
+ minimum: 1
+ maximum: 16
+
+ required:
+ - reg
+ - diff-channels
+
required:
- compatible
- reg
@@ -103,6 +134,17 @@ required:
allOf:
- $ref: /schemas/spi/spi-peripheral-props.yaml#
+ - if:
+ properties:
+ compatible:
+ enum:
+ - adi,ad7190
+ - adi,ad7192
+ - adi,ad7193
+ - adi,ad7195
+ then:
+ patternProperties:
+ "^channel@[0-9a-z]+$": false
unevaluatedProperties: false
@@ -133,3 +175,38 @@ examples:
adi,burnout-currents-enable;
};
};
+ - |
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ adc@0 {
+ compatible = "adi,ad7194";
+ reg = <0>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ spi-max-frequency = <1000000>;
+ spi-cpol;
+ spi-cpha;
+ clocks = <&ad7192_mclk>;
+ clock-names = "mclk";
+ interrupts = <25 0x2>;
+ interrupt-parent = <&gpio>;
+ aincom-supply = <&aincom>;
+ dvdd-supply = <&dvdd>;
+ avdd-supply = <&avdd>;
+ vref-supply = <&vref>;
+
+ channel@1 {
+ reg = <1>;
+ diff-channels = <1 6>;
+ };
+
+ channel@2 {
+ reg = <2>;
+ diff-channels = <16 5>;
+ };
+ };
+ };
--
2.34.1
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