[PATCH v2 1/2] regulator: dt-bindings: add hi3798cv200 regulator

[David Yang <mmyangfl@gmail.com>]

The PMOC block of the HiSilicon STB SoCs (Hi3798cv200/mv100/mv200)
drives an external converter with a PWM signal. Add dt-binding doc.

Signed-off-by: David Yang <mmyangfl@gmail.com>
---
 .../hisilicon,hi3798cv200-regulator.yaml      | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/hisilicon,hi3798cv200-regulator.yaml

diff --git a/Documentation/devicetree/bindings/regulator/hisilicon,hi3798cv200-regulator.yaml b/Documentation/devicetree/bindings/regulator/hisilicon,hi3798cv200-regulator.yaml
new file mode 100644
index 000000000000..812d94aca1f5
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/hisilicon,hi3798cv200-regulator.yaml
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/hisilicon,hi3798cv200-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HiSilicon STB voltage regulator
+
+maintainers:
+  - David Yang <mmyangfl@gmail.com>
+
+description: |
+  HiSilicon STB SoCs (Hi3798cv200/mv100/mv200) provide PWM outputs in the PMOC
+  block which drive an external converter.
+
+  The voltage range depends on the board design: reference designs specify
+  0.65 V to 1.15 V for the Hi3798cv200, and 0.7 V to 1.25 V for the Hi3798mv200;
+  a customized board has to figure out its own. The regulator itself has no
+  other source of calibration.
+
+properties:
+  compatible:
+    const: hisilicon,hi3798cv200-regulator
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - regulator-min-microvolt
+  - regulator-max-microvolt
+
+allOf:
+  - $ref: regulator.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    vddcpu: regulator@8a23018 {
+        compatible = "hisilicon,hi3798cv200-regulator";
+        reg = <0x8a23018 0x4>;
+        regulator-name = "vdd-cpu";
+        regulator-min-microvolt = <650000>;
+        regulator-max-microvolt = <1150000>;
+        regulator-always-on;
+    };
-- 
2.53.0