[PATCH v4 1/2] dt-bindings: iio: adc: add Axiado AX3000/AX3005 SARADC

[Petar Stepanovic <pstepanovic@axiado.com>]

The Axiado AX3000 and AX3005 SoCs include a 10-bit SAR ADC controller.
AX3000 supports 16 input channels, while AX3005 supports 8 input
channels.

Document the compatible strings, register region, clock, reference
voltage supply, and IIO channel cells.

Signed-off-by: Petar Stepanovic <pstepanovic@axiado.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
---
 .../bindings/iio/adc/axiado,ax3000-saradc.yaml     | 63 ++++++++++++++++++++++
 MAINTAINERS                                        |  8 +++
 2 files changed, 71 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/adc/axiado,ax3000-saradc.yaml b/Documentation/devicetree/bindings/iio/adc/axiado,ax3000-saradc.yaml
new file mode 100644
index 000000000000..b910852aa56f
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/axiado,ax3000-saradc.yaml
@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/axiado,ax3000-saradc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Axiado AX3000/AX3005 Successive Approximation Register ADC
+
+description:
+  The Axiado AX3000/AX3005 SAR ADC is a 10-bit ADC with sixteen input
+  channels on AX3000 and eight input channels on AX3005.
+
+maintainers:
+  - Petar Stepanovic <pstepanovic@axiado.com>
+  - Akhila Kavi <akavi@axiado.com>
+  - Prasad Bolisetty <pbolisetty@axiado.com>
+
+properties:
+  compatible:
+    enum:
+      - axiado,ax3000-saradc
+      - axiado,ax3005-saradc
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    const: saradc
+
+  '#io-channel-cells':
+    const: 1
+
+  vref-supply:
+    description: Reference voltage regulator supplying the ADC
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - '#io-channel-cells'
+  - vref-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      adc@806a0000 {
+        compatible = "axiado,ax3000-saradc";
+        reg = <0x0 0x806a0000 0x0 0x400>;
+        clocks = <&pclk>;
+        clock-names = "saradc";
+        vref-supply = <&vref_reg>;
+        #io-channel-cells = <1>;
+      };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index b2040011a386..d6f4febfe4fd 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4312,6 +4312,14 @@ S:	Orphan
 F:	Documentation/devicetree/bindings/sound/axentia,*
 F:	sound/soc/atmel/tse850-pcm5142.c
 
+AXIADO SARADC DRIVER
+M:	Petar Stepanovic <pstepanovic@axiado.com>
+M:	Akhila Kavi <akavi@axiado.com>
+M:	Prasad Bolisetty <pbolisetty@axiado.com>
+L:	linux-iio@vger.kernel.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/iio/adc/axiado,ax3000-saradc.yaml
+
 AXIS ARTPEC ARM64 SoC SUPPORT
 M:	Jesper Nilsson <jesper.nilsson@axis.com>
 M:	Lars Persson <lars.persson@axis.com>

-- 
2.34.1