xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/clock/qcom,kpss-acc-v1.yaml

# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/clock/qcom,kpss-acc-v1.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Krait Processor Sub-system (KPSS) Application Clock Controller (ACC) v1

maintainers:
  - Christian Marangi <ansuelsmth@gmail.com>

description:
  The KPSS ACC provides clock, power domain, and reset control to a Krait CPU.
  There is one ACC register region per CPU within the KPSS remapped region as
  well as an alias register region that remaps accesses to the ACC associated
  with the CPU accessing the region. ACC v1 is currently used as a
  clock-controller for enabling the cpu and handling the aux clocks.

properties:
  compatible:
    const: qcom,kpss-acc-v1

  reg:
    items:
      - description: Base address and size of the register region
      - description: Optional base address and size of the alias register region
    minItems: 1

  clocks:
    minItems: 2
    maxItems: 2

  clock-names:
    items:
      - const: pll8_vote
      - const: pxo

  clock-output-names:
    description: Name of the aux clock. Krait can have at most 4 cpu.
    enum:
      - acpu0_aux
      - acpu1_aux
      - acpu2_aux
      - acpu3_aux

  '#clock-cells':
    const: 0

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

additionalProperties: false

examples:
  - |
    #include <dt-bindings/clock/qcom,gcc-ipq806x.h>

    clock-controller@2088000 {
      compatible = "qcom,kpss-acc-v1";
      reg = <0x02088000 0x1000>, <0x02008000 0x1000>;
      clocks = <&gcc PLL8_VOTE>, <&pxo_board>;
      clock-names = "pll8_vote", "pxo";
      clock-output-names = "acpu0_aux";
      #clock-cells = <0>;
    };

...