linux/Documentation/devicetree/bindings/power/fsl,imx-gpcv2.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/power/fsl,imx-gpcv2.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Freescale i.MX General Power Controller v2

maintainers:
  - Andrey Smirnov <andrew.smirnov@gmail.com>

description: |
  The i.MX7S/D General Power Control (GPC) block contains Power Gating
  Control (PGC) for various power domains.

  Power domains contained within GPC node are generic power domain
  providers, documented in
  Documentation/devicetree/bindings/power/power-domain.yaml, which are
  described as subnodes of the power gating controller 'pgc' node.

  IP cores belonging to a power domain should contain a 'power-domains'
  property that is a phandle for PGC node representing the domain.  

properties:
  compatible:
    enum:
      - fsl,imx7d-gpc
      - fsl,imx8mn-gpc
      - fsl,imx8mq-gpc
      - fsl,imx8mm-gpc

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  interrupt-controller: true
  '#interrupt-cells':
    const: 3

  pgc:
    type: object
    description: list of power domains provided by this controller.

    patternProperties:
      "power-domain@[0-9]$":
        type: object
        properties:

          '#power-domain-cells':
            const: 0

          reg:
            description: |
              Power domain index. Valid values are defined in
              include/dt-bindings/power/imx7-power.h for fsl,imx7d-gpc and
              include/dt-bindings/power/imx8m-power.h for fsl,imx8mq-gpc
              include/dt-bindings/power/imx8mm-power.h for fsl,imx8mm-gpc              
            maxItems: 1

          clocks:
            description: |
              A number of phandles to clocks that need to be enabled during domain
              power-up sequencing to ensure reset propagation into devices located
              inside this power domain.              
            minItems: 1
            maxItems: 5

          power-supply: true

          resets:
            description: |
              A number of phandles to resets that need to be asserted during
              power-up sequencing of the domain. The resets belong to devices
              located inside the power domain, which need to be held in reset
              across the power-up sequence. So no means to specify what each
              reset is in a generic power-domain binding.              
            minItems: 1
            maxItems: 4

        required:
          - '#power-domain-cells'
          - reg

required:
  - compatible
  - reg
  - interrupts
  - pgc

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>

    gpc@303a0000 {
        compatible = "fsl,imx7d-gpc";
        reg = <0x303a0000 0x1000>;
        interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>;

        pgc {
            #address-cells = <1>;
            #size-cells = <0>;

            pgc_mipi_phy: power-domain@0 {
                #power-domain-cells = <0>;
                reg = <0>;
                power-supply = <&reg_1p0d>;
            };

            pgc_pcie_phy: power-domain@1 {
                #power-domain-cells = <0>;
                reg = <1>;
                power-supply = <&reg_1p0d>;
            };

            pgc_hsic_phy: power-domain@2 {
                #power-domain-cells = <0>;
                reg = <2>;
                power-supply = <&reg_1p2>;
            };
        };
    };