Add DT binding documentation used by StarFive's Starlink cache controller. Signed-off-by: Joshua Yeong <joshua.yeong@xxxxxxxxxxxxxxxx> Reviewed-by: Rob Herring (Arm) <robh@xxxxxxxxxx> --- .../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 <joshua.yeong@xxxxxxxxxxxxxxxx> + +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
