fsl,imx-gpcv2.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/power/fsl,imx-gpcv2.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Freescale i.MX General Power Controller v2
    8 
    9 maintainers:
   10   - Andrey Smirnov <andrew.smirnov@gmail.com>
   11 
   12 description: |
   13   The i.MX7S/D General Power Control (GPC) block contains Power Gating
   14   Control (PGC) for various power domains.
   15 
   16   Power domains contained within GPC node are generic power domain
   17   providers, documented in
   18   Documentation/devicetree/bindings/power/power-domain.yaml, which are
   19   described as subnodes of the power gating controller 'pgc' node.
   20 
   21   IP cores belonging to a power domain should contain a 'power-domains'
   22   property that is a phandle for PGC node representing the domain.
   23 
   24 properties:
   25   compatible:
   26     enum:
   27       - fsl,imx7d-gpc
   28       - fsl,imx8mn-gpc
   29       - fsl,imx8mq-gpc
   30       - fsl,imx8mm-gpc
   31       - fsl,imx8mp-gpc
   32 
   33   reg:
   34     maxItems: 1
   35 
   36   interrupts:
   37     maxItems: 1
   38 
   39   interrupt-controller: true
   40   '#interrupt-cells':
   41     const: 3
   42 
   43   pgc:
   44     type: object
   45     description: list of power domains provided by this controller.
   46 
   47     patternProperties:
   48       "power-domain@[0-9]$":
   49         type: object
   50         properties:
   51 
   52           '#power-domain-cells':
   53             const: 0
   54 
   55           reg:
   56             description: |
   57               Power domain index. Valid values are defined in
   58               include/dt-bindings/power/imx7-power.h for fsl,imx7d-gpc and
   59               include/dt-bindings/power/imx8m-power.h for fsl,imx8mq-gpc
   60               include/dt-bindings/power/imx8mm-power.h for fsl,imx8mm-gpc
   61               include/dt-bindings/power/imx8mp-power.h for fsl,imx8mp-gpc
   62             maxItems: 1
   63 
   64           clocks:
   65             description: |
   66               A number of phandles to clocks that need to be enabled during domain
   67               power-up sequencing to ensure reset propagation into devices located
   68               inside this power domain.
   69             minItems: 1
   70             maxItems: 5
   71 
   72           power-supply: true
   73 
   74           resets:
   75             description: |
   76               A number of phandles to resets that need to be asserted during
   77               power-up sequencing of the domain. The resets belong to devices
   78               located inside the power domain, which need to be held in reset
   79               across the power-up sequence. So no means to specify what each
   80               reset is in a generic power-domain binding.
   81             minItems: 1
   82             maxItems: 4
   83 
   84         required:
   85           - '#power-domain-cells'
   86           - reg
   87 
   88 required:
   89   - compatible
   90   - reg
   91   - interrupts
   92   - pgc
   93 
   94 additionalProperties: false
   95 
   96 examples:
   97   - |
   98     #include <dt-bindings/interrupt-controller/arm-gic.h>
   99 
  100     gpc@303a0000 {
  101         compatible = "fsl,imx7d-gpc";
  102         reg = <0x303a0000 0x1000>;
  103         interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>;
  104 
  105         pgc {
  106             #address-cells = <1>;
  107             #size-cells = <0>;
  108 
  109             pgc_mipi_phy: power-domain@0 {
  110                 #power-domain-cells = <0>;
  111                 reg = <0>;
  112                 power-supply = <&reg_1p0d>;
  113             };
  114 
  115             pgc_pcie_phy: power-domain@1 {
  116                 #power-domain-cells = <0>;
  117                 reg = <1>;
  118                 power-supply = <&reg_1p0d>;
  119             };
  120 
  121             pgc_hsic_phy: power-domain@2 {
  122                 #power-domain-cells = <0>;
  123                 reg = <2>;
  124                 power-supply = <&reg_1p2>;
  125             };
  126         };
  127     };

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sys/contrib/device-tree/Bindings/power/fsl,imx-gpcv2.yaml