Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml

   1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/soc/bcm/brcm,bcm2835-pm.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: BCM2835 PM (Power domains, watchdog)
   8
   9 description: |
  10   The PM block controls power domains and some reset lines, and includes a
  11   watchdog timer.
  12
  13 maintainers:
  14   - Nicolas Saenz Julienne <nsaenz@kernel.org>
  15
  16 allOf:
  17   - $ref: /schemas/watchdog/watchdog.yaml#
  18
  19 properties:
  20   compatible:
  21     items:
  22       - enum:
  23           - brcm,bcm2835-pm
  24           - brcm,bcm2711-pm
  25       - const: brcm,bcm2835-pm-wdt
  26
  27   reg:
  28     minItems: 2
  29     maxItems: 3
  30
  31   reg-names:
  32     minItems: 2
  33     items:
  34       - const: pm
  35       - const: asb
  36       - const: rpivid_asb
  37
  38   "#power-domain-cells":
  39     const: 1
  40
  41   "#reset-cells":
  42     const: 1
  43
  44   clocks:
  45     minItems: 4
  46     maxItems: 4
  47
  48   clock-names:
  49     items:
  50       - const: v3d
  51       - const: peri_image
  52       - const: h264
  53       - const: isp
  54
  55   system-power-controller:
  56     type: boolean
  57
  58   timeout-sec: true
  59
  60 required:
  61   - compatible
  62   - reg
  63   - "#power-domain-cells"
  64   - "#reset-cells"
  65   - clocks
  66
  67 additionalProperties: false
  68
  69 examples:
  70   - |
  71     #include <dt-bindings/clock/bcm2835.h>
  72
  73     watchdog@7e100000 {
  74         compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt";
  75         #power-domain-cells = <1>;
  76         #reset-cells = <1>;
  77         reg = <0x7e100000 0x114>,
  78               <0x7e00a000 0x24>;
  79         reg-names = "pm", "asb";
  80         clocks = <&clocks BCM2835_CLOCK_V3D>,
  81                <&clocks BCM2835_CLOCK_PERI_IMAGE>,
  82                <&clocks BCM2835_CLOCK_H264>,
  83                <&clocks BCM2835_CLOCK_ISP>;
  84         clock-names = "v3d", "peri_image", "h264", "isp";
  85         system-power-controller;
  86     };