regulator: vqmmc-ipq4019-regulator: add binding document

# SPDX-License-Identifier: GPL-2.0

%YAML 1.2

---

$id: http://devicetree.org/schemas/regulator/vqmmc-ipq4019-regulator.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Qualcomm IPQ4019 VQMMC SD LDO regulator

maintainers:

  - Robert Marko <robert.marko@sartura.hr>

description: |

  Qualcomm IPQ4019 SoC-s feature a built a build SD/EMMC controller,

  in order to support both 1.8 and 3V I/O voltage levels an LDO

  controller is also embedded.

allOf:

  - $ref: "regulator.yaml#"

properties:

  compatible:

    const: qcom,vqmmc-ipq4019-regulator

  reg:

    maxItems: 1

required:

  - compatible

  - reg

examples:

  - |

    regulator@1948000 {

      compatible = "qcom,vqmmc-ipq4019-regulator";

      reg = <0x01948000 0x4>;

      regulator-name = "vqmmc";

      regulator-min-microvolt = <1500000>;

      regulator-max-microvolt = <3000000>;

      regulator-always-on;

      status = "disabled";

    };

...