linux-kernel - [RFC PATCH 1/3] dt-bindings: iio: adc: Add TI ADS1120 binding

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Message-Id: <20251030163411.236672-2-ajithanandhan0406@gmail.com>
Date: Thu, 30 Oct 2025 22:04:09 +0530
From: Ajith Anandhan <ajithanandhan0406@...il.com>
To: linux-iio@...r.kernel.org
Cc: jic23@...nel.org,
	dlechner@...libre.com,
	nuno.sa@...log.com,
	andy@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Ajith Anandhan <ajithanandhan0406@...il.com>
Subject: [RFC PATCH 1/3] dt-bindings: iio: adc: Add TI ADS1120 binding

Add device tree binding documentation for the Texas Instruments
ADS1120.

The binding defines required properties like compatible, reg, and
SPI configuration parameters.

Link: https://www.ti.com/lit/gpn/ads1120
Signed-off-by: Ajith Anandhan <ajithanandhan0406@...il.com>
---
 .../bindings/iio/adc/ti,ads1120.yaml          | 50 +++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/ti,ads1120.yaml

diff --git a/Documentation/devicetree/bindings/iio/adc/ti,ads1120.yaml b/Documentation/devicetree/bindings/iio/adc/ti,ads1120.yaml
new file mode 100644
index 000000000..09285c981
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/ti,ads1120.yaml
@@ -0,0 +1,50 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/ti,ads1120.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments ADS1120 4-channel, 16-bit, 2kSPS ADC
+
+maintainers:
+  - Ajith Anandhan <ajithanandhan0406@...il.com>
+
+properties:
+  compatible:
+    const: ti,ads1120
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 4000000
+
+  spi-cpha: true
+
+  "#io-channel-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        adc@0 {
+            compatible = "ti,ads1120";
+            reg = <0>;
+            spi-max-frequency = <4000000>;
+            spi-cpha;
+        };
+    };
+...
+
-- 
2.34.1