linux-kernel - [RFC PATCH 14/21] DO_NOT_MERGE dt-bindings: soc: add Foobar SoC cache controller

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Message-Id: <20230419111111.477118-15-dfustini@baylibre.com>
Date:   Wed, 19 Apr 2023 04:11:04 -0700
From:   Drew Fustini <dfustini@...libre.com>
To:     linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Ved Shanbhogue <ved@...osinc.com>,
        Kornel Dulęba <mindal@...ihalf.com>,
        Adrien Ricciardi <aricciardi@...libre.com>,
        Nicolas Pitre <npitre@...libre.com>,
        Fenghua Yu <fenghua.yu@...el.com>,
        Reinette Chatre <reinette.chatre@...el.com>,
        Babu Moger <babu.moger@....com>,
        Peter Newman <peternewman@...gle.com>, x86@...nel.org,
        Rob Herring <robh+dt@...nel.org>,
        James Morse <james.morse@....com>
Cc:     Drew Fustini <dfustini@...libre.com>
Subject: [RFC PATCH 14/21] DO_NOT_MERGE dt-bindings: soc: add Foobar SoC cache controller

Add bindings for an example SoC cache controller that implements CBQRI.

Co-developed-by: Adrien Ricciardi <aricciardi@...libre.com>
Signed-off-by: Adrien Ricciardi <aricciardi@...libre.com>
Signed-off-by: Drew Fustini <dfustini@...libre.com>
---
 .../soc/foobar/foobar,cache-controller.yaml   | 51 +++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/foobar/foobar,cache-controller.yaml

diff --git a/Documentation/devicetree/bindings/soc/foobar/foobar,cache-controller.yaml b/Documentation/devicetree/bindings/soc/foobar/foobar,cache-controller.yaml
new file mode 100644
index 000000000000..6348483bbe09
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/foobar/foobar,cache-controller.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/foobar/foobar,cache-controller.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Foobar SoC Cache Controller
+
+maintainers:
+  - Drew Fustini <dfustini@...libre.com>
+
+description:
+  Foobar SoC cache controller implements the RISC-V CBQRI interface for
+  capacity allocaiton and usage monitoring.
+
+allOf:
+  - $ref: /schemas/cache-controller.yaml#
+  - $ref: /schemas/riscv/riscv,cbqri.yaml#
+
+properties:
+  compatible:
+    items:
+      - const: foobar,cache-controller
+  reg:
+    maxItems: 1
+    description: A memory region containing registers as defined in CBQRI spec
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+
+    cache-controller@...12000 {
+        compatible = "foobar,cache-controller";
+        reg = <0xfff12000 0x2000>;
+        cache-level = <2>;
+        riscv,cbqri-rcid = <64>;
+        riscv,cbqri-mcid = <256>;
+    };
+
+...
-- 
2.34.1