diff mbox series

[v3,2/2] dt-bindings: cache: Add docs for StarFive Starlink cache controller

Message ID 20240424075856.145850-3-joshua.yeong@starfivetech.com
State Not Applicable
Headers show
Series Add StarFive's JH8100 StarLink Cache Controller | expand

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Commit Message

Joshua Yeong April 24, 2024, 7:58 a.m. UTC 
Add DT binding documentation used by StarFive's
JH8100 SoC Starlink cache controller.

Signed-off-by: Joshua Yeong <joshua.yeong@starfivetech.com>
---
 .../cache/starfive,jh8100-starlink-cache.yaml | 66 +++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/cache/starfive,jh8100-starlink-cache.yaml

Comments

Rob Herring April 24, 2024, 10:04 p.m. UTC | #1 
On Wed, 24 Apr 2024 15:58:56 +0800, Joshua Yeong wrote:
> Add DT binding documentation used by StarFive's
> JH8100 SoC Starlink cache controller.
> 
> Signed-off-by: Joshua Yeong <joshua.yeong@starfivetech.com>
> ---
>  .../cache/starfive,jh8100-starlink-cache.yaml | 66 +++++++++++++++++++
>  1 file changed, 66 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/cache/starfive,jh8100-starlink-cache.yaml
> 

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/cache/starfive,jh8100-starlink-cache.yaml b/Documentation/devicetree/bindings/cache/starfive,jh8100-starlink-cache.yaml
new file mode 100644
index 000000000000..6d61098e388b
--- /dev/null
+++ b/Documentation/devicetree/bindings/cache/starfive,jh8100-starlink-cache.yaml
@@ -0,0 +1,66 @@ 
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/cache/starfive,jh8100-starlink-cache.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive StarLink Cache Controller
+
+maintainers:
+  - Joshua Yeong <joshua.yeong@starfivetech.com>
+
+description:
+  StarFive's StarLink Cache Controller manages the L3 cache shared between
+  clusters of CPU cores. The cache driver enables RISC-V non-standard cache
+  management as an alternative to instructions in the RISC-V Zicbom extension.
+
+allOf:
+  - $ref: /schemas/cache-controller.yaml#
+
+# We need a select here so we don't match all nodes with 'cache'
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - starfive,jh8100-starlink-cache
+
+  required:
+    - compatible
+
+properties:
+  compatible:
+    items:
+      - const: starfive,jh8100-starlink-cache
+      - const: cache
+
+  reg:
+    maxItems: 1
+
+unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - cache-block-size
+  - cache-level
+  - cache-sets
+  - cache-size
+  - cache-unified
+
+examples:
+  - |
+      soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        cache-controller@15000000 {
+          compatible = "starfive,jh8100-starlink-cache", "cache";
+          reg = <0x0 0x15000000 0x0 0x278>;
+          cache-block-size = <64>;
+          cache-level = <3>;
+          cache-sets = <8192>;
+          cache-size = <0x400000>;
+          cache-unified;
+        };
+      };