linux-kernel - [PATCH v2 1/3] dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller

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Message-Id: <20230720135125.21240-2-eric.lin@sifive.com>
Date:   Thu, 20 Jul 2023 21:51:19 +0800
From:   Eric Lin <eric.lin@...ive.com>
To:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, palmer@...belt.com, paul.walmsley@...ive.com,
        will@...nel.org, mark.rutland@....com, tglx@...utronix.de,
        peterz@...radead.org, devicetree@...r.kernel.org,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     zong.li@...ive.com, greentime.hu@...ive.com,
        vincent.chen@...ive.com, Eric Lin <eric.lin@...ive.com>,
        Nick Hu <nick.hu@...ive.com>
Subject: [PATCH v2 1/3] dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller

This add YAML DT binding documentation for SiFive Private L2
cache controller

Signed-off-by: Eric Lin <eric.lin@...ive.com>
Reviewed-by: Zong Li <zong.li@...ive.com>
Reviewed-by: Nick Hu <nick.hu@...ive.com>
---
 .../bindings/cache/sifive,pl2cache.yaml       | 62 +++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml

diff --git a/Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml b/Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
new file mode 100644
index 000000000000..ee8356c5eeee
--- /dev/null
+++ b/Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (C) 2023 SiFive, Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SiFive Private L2 Cache Controller
+
+maintainers:
+  - Greentime Hu  <greentime.hu@...ive.com>
+  - Eric Lin  <eric.lin@...ive.com>
+
+description:
+  The SiFive Private L2 Cache Controller is per core and
+  communicates with both the upstream L1 caches and
+  downstream L3 cache or memory, enabling a high-performance
+  cache subsystem.
+
+allOf:
+  - $ref: /schemas/cache-controller.yaml#
+
+properties:
+  compatible:
+    items:
+      - const: sifive,pl2cache1
+      - const: cache
+
+  cache-block-size: true
+  cache-level: true
+  cache-sets: true
+  cache-size: true
+  cache-unified: true
+
+  reg:
+    maxItems: 1
+
+  next-level-cache: true
+
+required:
+  - compatible
+  - cache-block-size
+  - cache-level
+  - cache-sets
+  - cache-size
+  - cache-unified
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    cache-controller@...04000 {
+        compatible = "sifive,pl2cache1","cache";
+        cache-block-size = <64>;
+        cache-level = <2>;
+        cache-sets = <512>;
+        cache-size = <262144>;
+        cache-unified;
+        reg = <0x10104000 0x4000>;
+        next-level-cache = <&L4>;
+    };
-- 
2.40.1