xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/clock/renesas,cpg-div6-clock.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/clock/renesas,cpg-div6-clock.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Renesas CPG DIV6 Clock

maintainers:
  - Geert Uytterhoeven <geert+renesas@glider.be>

description:
  The CPG DIV6 clocks are variable factor clocks provided by the Clock Pulse
  Generator (CPG). Their clock input is divided by a configurable factor from 1
  to 64.

properties:
  compatible:
    items:
      - enum:
          - renesas,r8a73a4-div6-clock # R-Mobile APE6
          - renesas,r8a7740-div6-clock # R-Mobile A1
          - renesas,sh73a0-div6-clock  # SH-Mobile AG5
      - const: renesas,cpg-div6-clock

  reg:
    maxItems: 1

  clocks:
    oneOf:
      - maxItems: 1
      - maxItems: 4
      - maxItems: 8
    description:
      For clocks with multiple parents, invalid settings must be specified as
      "<0>".

  '#clock-cells':
    const: 0

  clock-output-names: true

required:
  - compatible
  - reg
  - clocks
  - '#clock-cells'

additionalProperties: false

examples:
  - |
    #include <dt-bindings/clock/r8a73a4-clock.h>

    cpg_clocks: cpg_clocks@e6150000 {
            compatible = "renesas,r8a73a4-cpg-clocks";
            reg = <0xe6150000 0x10000>;
            clocks = <&extal1_clk>, <&extal2_clk>;
            #clock-cells = <1>;
            clock-output-names = "main", "pll0", "pll1", "pll2",
                                  "pll2s", "pll2h", "z", "z2",
                                  "i", "m3", "b", "m1", "m2",
                                  "zx", "zs", "hp";
    };

    sdhi2_clk: sdhi2_clk@e615007c {
            compatible = "renesas,r8a73a4-div6-clock", "renesas,cpg-div6-clock";
            reg = <0xe615007c 4>;
            clocks = <&pll1_div2_clk>, <&cpg_clocks R8A73A4_CLK_PLL2S>, <0>,
                     <&extal2_clk>;
            #clock-cells = <0>;
    };