2024-04-24 07:59:50

by Joshua Yeong

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

Add DT binding documentation used by StarFive's
JH8100 SoC Starlink cache controller.

Signed-off-by: Joshua Yeong <[email protected]>
---
.../cache/starfive,jh8100-starlink-cache.yaml | 66 +++++++++++++++++++
1 file changed, 66 insertions(+)
create mode 100644 Documentation/devicetree/bindings/cache/starfive,jh8100-starlink-cache.yaml

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 <[email protected]>
+
+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;
+ };
+ };
--
2.25.1

2024-04-24 22:04:44

by Rob Herring

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

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 <[email protected]>
> ---
> .../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) <[email protected]>