linux-kernel - [PATCH v1 3/3] dt-bindings: iio: adc: add ADS7924

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Message-Id: <20221222203610.2571287-4-hugo@hugovil.com>
Date:   Thu, 22 Dec 2022 15:36:10 -0500
From:   Hugo Villeneuve <hugo@...ovil.com>
To:     hvilleneuve@...onoff.com, jic23@...nel.org, lars@...afoo.de,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org
Cc:     linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, hugo@...ovil.com
Subject: [PATCH v1 3/3] dt-bindings: iio: adc: add ADS7924

From: Hugo Villeneuve <hvilleneuve@...onoff.com>

Add device tree bindings document for the Texas Instruments ADS7924
ADC.

Signed-off-by: Hugo Villeneuve <hvilleneuve@...onoff.com>
---
 .../bindings/iio/adc/ti,ads7924.yaml          | 103 ++++++++++++++++++
 1 file changed, 103 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/ti,ads7924.yaml

diff --git a/Documentation/devicetree/bindings/iio/adc/ti,ads7924.yaml b/Documentation/devicetree/bindings/iio/adc/ti,ads7924.yaml
new file mode 100644
index 000000000000..5408ec95e417
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/ti,ads7924.yaml
@@ -0,0 +1,103 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/ti,ads7924.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI ADS7924 4 channels 12 bits I2C analog to digital converter
+
+maintainers:
+  - Hugo Villeneuve <hvilleneuve@...onoff.com>
+
+description: |
+  Texas Instruments ADS7924 4 channels 12 bits I2C analog to digital converter
+
+  Specifications:
+    https://www.ti.com/lit/gpn/ads7924
+
+properties:
+  compatible:
+    const: ti,ads7924
+
+  vref-supply:
+    description:
+      The regulator supply for the ADC reference voltage (AVDD)
+
+  reg:
+    maxItems: 1
+
+  reset-gpios:
+    description:
+      GPIO used for controlling the reset pin
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+  "#io-channel-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - vref-supply
+  - "#address-cells"
+  - "#size-cells"
+
+additionalProperties: false
+
+patternProperties:
+  "^channel@[0-3]+$":
+    type: object
+    description:
+      Child nodes needed for each channel that the platform uses.
+
+    properties:
+      reg:
+        description: |
+          0: Voltage over AIN0 and GND.
+          1: Voltage over AIN1 and GND.
+          2: Voltage over AIN2 and GND.
+          3: Voltage over AIN3 and GND.
+        items:
+          - minimum: 0
+            maximum: 3
+
+    required:
+      - reg
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        adc@48 {
+            compatible = "ti,ads7924";
+            reg = <0x48>;
+            vref-supply = <&ads7924_reg>;
+            reset-gpios = <&gpio 5 GPIO_ACTIVE_LOW>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+            channel@0 {
+              reg = <0>;
+              label = "CH0";
+            };
+            channel@1 {
+              reg = <1>;
+              label = "CH1";
+            };
+            channel@2 {
+              reg = <2>;
+              label = "CH2";
+            };
+            channel@3 {
+              reg = <3>;
+              label = "CH3";
+            };
+        };
+    };
+...
-- 
2.30.2