linux-kernel - [PATCH 1/2] dt-bindings: iio: adc: Introduce ADS7138

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Message-Id: <20241122-adc_ml-v1-1-0769f2e1bbc1@softing.com>
Date: Fri, 22 Nov 2024 16:15:36 +0100
From: Tobias Sperling via B4 Relay <devnull+tobias.sperling.softing.com@...nel.org>
To: Jonathan Cameron <jic23@...nel.org>, 
 Lars-Peter Clausen <lars@...afoo.de>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-iio@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Tobias Sperling <tobias.sperling@...ting.com>
Subject: [PATCH 1/2] dt-bindings: iio: adc: Introduce ADS7138

From: Tobias Sperling <tobias.sperling@...ting.com>

Add documentation for the driver of ADS7128 and ADS7138 12-bit, 8-channel
analog-to-digital converters. These ADCs have a wide operating range and
a wide feature set. Communication is based on the I2C interface.

Signed-off-by: Tobias Sperling <tobias.sperling@...ting.com>
---
 .../devicetree/bindings/iio/adc/ti,ads7138.yaml    | 64 ++++++++++++++++++++++
 1 file changed, 64 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/adc/ti,ads7138.yaml b/Documentation/devicetree/bindings/iio/adc/ti,ads7138.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..367d3b27cec3bc5800aac42c8a07497da7de4c1b
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/ti,ads7138.yaml
@@ -0,0 +1,64 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/ti,ads7138.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments ADS7128/ADS7138 analog-to-digital converter (ADC)
+
+maintainers:
+  - Tobias Sperling <tobias.sperling@...ting.com>
+
+description: |
+  The ADS7128 and ADS7138 chips are 12-bit, 8 channel analog-to-digital
+  converters (ADC) with build-in digital window comparator (DWC), using the
+  I2C interface.
+  ADS7128 differs in the addition of further hardware features, like a
+  root-mean-square (RMS) and a zero-crossing-detect (ZCD) module, which are
+  not yet supported by the driver.
+
+  Datasheets:
+    https://www.ti.com/product/ADS7128
+    https://www.ti.com/product/ADS7138
+
+properties:
+  compatible:
+    enum:
+      - ti,ads7128
+      - ti,ads7138
+
+  reg:
+    maxItems: 1
+
+  avdd-supply:
+    description:
+      The regulator used as analog supply voltage as well as reference voltage.
+
+  interrupts:
+    description:
+      Interrupt on ALERT pin, triggers on low level.
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - avdd-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        adc@10 {
+            compatible = "ti,ads7138";
+            reg = <0x10>;
+            avdd-supply = <&reg_stb_3v3>;
+            interrupt-parent = <&gpio2>;
+            interrupts = <12 IRQ_TYPE_LEVEL_LOW>;
+        };
+    };
+...

-- 
2.34.1