xref: /kernel/linux/linux-5.10/Documentation/devicetree/bindings/arm/msm/qcom,llcc.yaml

# SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/msm/qcom,llcc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Last Level Cache Controller

maintainers:
  - Rishabh Bhatnagar <rishabhb@codeaurora.org>
  - Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>

description: |
  LLCC (Last Level Cache Controller) provides last level of cache memory in SoC,
  that can be shared by multiple clients. Clients here are different cores in the
  SoC, the idea is to minimize the local caches at the clients and migrate to
  common pool of memory. Cache memory is divided into partitions called slices
  which are assigned to clients. Clients can query the slice details, activate
  and deactivate them.

properties:
  compatible:
    enum:
      - qcom,sc7180-llcc
      - qcom,sdm845-llcc

  reg:
    items:
      - description: LLCC base register region
      - description: LLCC broadcast base register region

  reg-names:
    items:
      - const: llcc_base
      - const: llcc_broadcast_base

  interrupts:
    maxItems: 1

required:
  - compatible
  - reg
  - reg-names
  - interrupts

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>

    system-cache-controller@1100000 {
      compatible = "qcom,sdm845-llcc";
      reg = <0x1100000 0x200000>, <0x1300000 0x50000> ;
      reg-names = "llcc_base", "llcc_broadcast_base";
      interrupts = <GIC_SPI 582 IRQ_TYPE_LEVEL_HIGH>;
    };