linux-kernel - [PATCH v2] dt-bindings:iio:adc:st,spear600-adc: txt to yaml format conversion.

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Message-ID: <20250430020248.26639-1-rodrigo.gobbi.7@gmail.com>
Date: Tue, 29 Apr 2025 22:50:01 -0300
From: Rodrigo Gobbi <rodrigo.gobbi.7@...il.com>
To: jic23@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org
Cc: ~lkcamp/patches@...ts.sr.ht,
	linux-iio@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2] dt-bindings:iio:adc:st,spear600-adc: txt to yaml format conversion.

Straight forward conversion from spear-adc.txt into yaml format.

Signed-off-by: Rodrigo Gobbi <rodrigo.gobbi.7@...il.com>
---
Some constraints were extracted from the driver (spear_adc.c) and the public datasheet
referenced at the yaml.

Changelog:
v2: add constraints over properties and remove a ref at MAINTAINERS file.
v1: https://lore.kernel.org/linux-devicetree/20250423022956.31218-1-rodrigo.gobbi.7@gmail.com/
---
 .../bindings/iio/adc/st,spear600-adc.yaml     | 69 +++++++++++++++++++
 .../bindings/staging/iio/adc/spear-adc.txt    | 24 -------
 MAINTAINERS                                   |  2 +-
 3 files changed, 70 insertions(+), 25 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/st,spear600-adc.yaml
 delete mode 100644 Documentation/devicetree/bindings/staging/iio/adc/spear-adc.txt

diff --git a/Documentation/devicetree/bindings/iio/adc/st,spear600-adc.yaml b/Documentation/devicetree/bindings/iio/adc/st,spear600-adc.yaml
new file mode 100644
index 000000000000..afce10eab1c1
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/st,spear600-adc.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/st,spear600-adc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ST SPEAr ADC device driver
+
+maintainers:
+  - Jonathan Cameron <jic23@...nel.org>
+
+description: |
+  Integrated ADC inside the ST SPEAr SoC, SPEAr600, supporting
+  10-bit resolution. Datasheet can be found here:
+  https://www.st.com/resource/en/datasheet/spear600.pdf
+
+properties:
+  compatible:
+    enum:
+      - st,spear600-adc
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  sampling-frequency:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 2500000
+    maximum: 20000000
+    description:
+      Default sampling frequency of the ADC
+
+  vref-external:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 1000
+    maximum: 2800
+    description:
+      External voltage reference in milli-volts. If omitted
+      the internal voltage reference will be used.
+
+  average-samples:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 1
+    maximum: 128
+    default: 0
+    description:
+      Number of samples to generate an average value. If
+      omitted, single data conversion will be used.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - sampling-frequency
+
+additionalProperties: false
+
+examples:
+  - |
+    adc: adc@...00000 {
+        compatible = "st,spear600-adc";
+        reg = <0xd8200000 0x1000>;
+        interrupt-parent = <&vic1>;
+        interrupts = <6>;
+        sampling-frequency = <5000000>;
+        vref-external = <2500>;	/* 2.5V VRef */
+    };
diff --git a/Documentation/devicetree/bindings/staging/iio/adc/spear-adc.txt b/Documentation/devicetree/bindings/staging/iio/adc/spear-adc.txt
deleted file mode 100644
index 88bc94fe1f6d..000000000000
--- a/Documentation/devicetree/bindings/staging/iio/adc/spear-adc.txt
+++ /dev/null
@@ -1,24 +0,0 @@
-* ST SPEAr ADC device driver
-
-Required properties:
-- compatible: Should be "st,spear600-adc"
-- reg: Address and length of the register set for the device
-- interrupts: Should contain the ADC interrupt
-- sampling-frequency: Default sampling frequency
-
-Optional properties:
-- vref-external: External voltage reference in milli-volts. If omitted
-  the internal voltage reference will be used.
-- average-samples: Number of samples to generate an average value. If
-  omitted, single data conversion will be used.
-
-Examples:
-
-	adc: adc@...00000 {
-		compatible = "st,spear600-adc";
-		reg = <0xd8200000 0x1000>;
-		interrupt-parent = <&vic1>;
-		interrupts = <6>;
-		sampling-frequency = <5000000>;
-		vref-external = <2500>;	/* 2.5V VRef */
-	};
diff --git a/MAINTAINERS b/MAINTAINERS
index 906881b6c5cb..e923becb0633 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -23213,7 +23213,7 @@ STAGING - INDUSTRIAL IO
 M:	Jonathan Cameron <jic23@...nel.org>
 L:	linux-iio@...r.kernel.org
 S:	Odd Fixes
-F:	Documentation/devicetree/bindings/staging/iio/
+F:	Documentation/devicetree/bindings/iio/
 F:	drivers/staging/iio/
 
 STAGING - NVIDIA COMPLIANT EMBEDDED CONTROLLER INTERFACE (nvec)
-- 
2.47.0