linux-kernel - [PATCH v2 1/2] dt-bindings: iio: adc: ti,ads7038: Add description for ADS7038

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Message-ID: <20231005035933.31016-1-andre.werner@systec-electronic.com>
Date:   Thu,  5 Oct 2023 05:54:54 +0200
From:   werneazc@...il.com
To:     jic23@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        lars@...afoo.de
Cc:     devicetree@...r.kernel.org, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Andre Werner <andre.werner@...tec-electronic.com>
Subject: [PATCH v2 1/2] dt-bindings: iio: adc: ti,ads7038: Add description for ADS7038

From: Andre Werner <andre.werner@...tec-electronic.com>

Add basic description for ADS7x38 ADC devices. The driver does only
support a very basic set of functionalities provided by the chip.
Also, the example in the description covers only a setup for ADS7038 devices
while the driver structure will support both ADS7038 (SPI) and ADS7138 (I2C) devices.

Signed-off-by: Andre Werner <andre.werner@...tec-electronic.com>
---
- v2: Add commit message and correct vref-description copy-paste-error.
---
 .../bindings/iio/adc/ti,ads7038.yaml          | 51 +++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/ti,ads7038.yaml

diff --git a/Documentation/devicetree/bindings/iio/adc/ti,ads7038.yaml b/Documentation/devicetree/bindings/iio/adc/ti,ads7038.yaml
new file mode 100644
index 000000000000..d40869b9a604
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/ti,ads7038.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/ti,ads7038.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments ADS7038 and similar ADCs
+
+maintainers:
+  - Andre Werner <andre.werner@...tec-electronic.com>
+
+description: |
+  Family of 7 channel, 12 bit ADCs with SPI/I2C interface.
+
+  Datasheet: https://www.ti.com/lit/gpn/ads7038
+
+properties:
+  compatible:
+    enum:
+      - ti,ads7038
+      - ti,ads7138
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 60000000
+
+  vref-supply:
+    description: Supplies the reference voltage AVDD
+
+required:
+  - compatible
+  - reg
+  - vref-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        adc@0 {
+            compatible = "ti,ads7038";
+            reg = <0>;
+            vref-supply = <&refin_supply>;
+            spi-max-frequency = <10000000>;
+        };
+    };
-- 
2.42.0