[PATCH 1/3] dt-bindings: iio: adc: sophgo,cv18xx-saradc.yaml: Add Sophgo SARADC binding documentation

[Thomas Bonnefille <thomas.bonnefille@bootlin.com>]

The Sophgo SARADC is a Successive Approximation ADC that can be found in
the Sophgo SoC.

Signed-off-by: Thomas Bonnefille <thomas.bonnefille@bootlin.com>
---
 .../bindings/iio/adc/sophgo,cv18xx-saradc.yaml     | 51 ++++++++++++++++++++++
 MAINTAINERS                                        |  5 +++
 2 files changed, 56 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/adc/sophgo,cv18xx-saradc.yaml b/Documentation/devicetree/bindings/iio/adc/sophgo,cv18xx-saradc.yaml
new file mode 100644
index 000000000000..21fd5dc8e24e
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/sophgo,cv18xx-saradc.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/sophgo,cv18xx-adc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sophgo 3 channels Successive Approximation Analog to Digital Converters
+
+maintainers:
+  - Thomas Bonnefille <thomas.bonnefille@bootlin.com>
+
+description:
+  Datasheet at https://github.com/sophgo/sophgo-doc/releases
+
+properties:
+  compatible:
+    const: sophgo,cv18xx-saradc
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    description:
+      SARADC will use the presence of this clock to determine if the controller
+      needs to be explicitly clocked by it (Active domain) or if it is part of
+      the No-Die Domain, along with the RTC, which does not require explicit
+      clocking.
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+    # ADC in the Active domain
+    adc@30f0000 {
+      compatible = "sophgo,cv18xx-saradc";
+      clocks = <&clk CLK_SARADC>;
+      interrupts = <100 IRQ_TYPE_LEVEL_HIGH>;
+      reg = <0x030F0000 0x1000>;
+    };
+  - |
+    # ADC in the No-Die domain
+    adc@502c000 {
+      compatible = "sophgo,cv18xx-saradc";
+      reg = <0x0502C000 0x1000>;
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index aacccb376c28..dc87898c518c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -20901,6 +20901,11 @@ S:	Maintained
 N:	sophgo
 K:	sophgo
 
+SOPHGO SARADC DEVICE DRIVER
+M:	Thomas Bonnefille <thomas.bonnefille@bootlin.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/iio/adc/sophgo,cv18xx-saradc.yaml
+
 SOUND
 M:	Jaroslav Kysela <perex@perex.cz>
 M:	Takashi Iwai <tiwai@suse.com>

-- 
2.45.2