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

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

title: Renesas Clock Pulse Generator (CPG) Module Stop (MSTP) Clocks

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

description:
  The Clock Pulse Generator (CPG) can gate SoC device clocks. The gates are
  organized in groups of up to 32 gates.

  This device tree binding describes a single 32 gate clocks group per node.
  Clocks are referenced by user nodes by the Module Stop (MSTP) node phandle
  and the clock index in the group, from 0 to 31.

properties:
  compatible:
    items:
      - enum:
          - renesas,r7s72100-mstp-clocks # RZ/A1
          - renesas,r8a73a4-mstp-clocks  # R-Mobile APE6
          - renesas,r8a7740-mstp-clocks  # R-Mobile A1
          - renesas,r8a7778-mstp-clocks  # R-Car M1
          - renesas,r8a7779-mstp-clocks  # R-Car H1
          - renesas,sh73a0-mstp-clocks   # SH-Mobile AG5
      - const: renesas,cpg-mstp-clocks

  reg:
    minItems: 1
    items:
      - description: Module Stop Control Register (MSTPCR)
      - description: Module Stop Status Register (MSTPSR)

  clocks:
    minItems: 1
    maxItems: 32

  '#clock-cells':
    const: 1

  clock-indices:
    minItems: 1
    maxItems: 32

  clock-output-names:
    minItems: 1
    maxItems: 32

required:
  - compatible
  - reg
  - clocks
  - '#clock-cells'
  - clock-indices
  - clock-output-names

additionalProperties: false

examples:
  - |
    #include <dt-bindings/clock/r8a73a4-clock.h>
    mstp2_clks: mstp2_clks@e6150138 {
            compatible = "renesas,r8a73a4-mstp-clocks",
                         "renesas,cpg-mstp-clocks";
            reg = <0xe6150138 4>, <0xe6150040 4>;
            clocks = <&mp_clk>, <&mp_clk>, <&mp_clk>, <&mp_clk>, <&mp_clk>,
                     <&mp_clk>, <&cpg_clocks R8A73A4_CLK_HP>;
            #clock-cells = <1>;
            clock-indices = <
                    R8A73A4_CLK_SCIFA0 R8A73A4_CLK_SCIFA1
                    R8A73A4_CLK_SCIFB0 R8A73A4_CLK_SCIFB1
                    R8A73A4_CLK_SCIFB2 R8A73A4_CLK_SCIFB3
                    R8A73A4_CLK_DMAC
            >;
            clock-output-names =
                    "scifa0", "scifa1", "scifb0", "scifb1", "scifb2", "scifb3",
                    "dmac";
    };