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-# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
-# Copyright (C) 2020 BAIKAL ELECTRONICS, JSC
-%YAML 1.2
----
-$id: http://devicetree.org/schemas/memory-controllers/baikal,bt1-l2-ctl.yaml#
-$schema: http://devicetree.org/meta-schemas/core.yaml#
-
-title: Baikal-T1 L2-cache Control Block
-
-maintainers:
- - Serge Semin <fancer.lancer@gmail.com>
-
-description: |
- By means of the System Controller Baikal-T1 SoC exposes a few settings to
- tune the MIPS P5600 CM2 L2 cache performance up. In particular it's possible
- to change the Tag, Data and Way-select RAM access latencies. Baikal-T1
- L2-cache controller block is responsible for the tuning. Its DT node is
- supposed to be a child of the system controller.
-
-properties:
- compatible:
- const: baikal,bt1-l2-ctl
-
- reg:
- maxItems: 1
-
- baikal,l2-ws-latency:
- $ref: /schemas/types.yaml#/definitions/uint32
- description: Cycles of latency for Way-select RAM accesses
- default: 0
- minimum: 0
- maximum: 3
-
- baikal,l2-tag-latency:
- $ref: /schemas/types.yaml#/definitions/uint32
- description: Cycles of latency for Tag RAM accesses
- default: 0
- minimum: 0
- maximum: 3
-
- baikal,l2-data-latency:
- $ref: /schemas/types.yaml#/definitions/uint32
- description: Cycles of latency for Data RAM accesses
- default: 1
- minimum: 0
- maximum: 3
-
-additionalProperties: false
-
-required:
- - compatible
-
-examples:
- - |
- l2@1f04d028 {
- compatible = "baikal,bt1-l2-ctl";
- reg = <0x1f04d028 0x004>;
-
- baikal,l2-ws-latency = <1>;
- baikal,l2-tag-latency = <1>;
- baikal,l2-data-latency = <2>;
- };
-...