From b60cf8e59e61133b6c9514ff8d8c8d7049d040ef Mon Sep 17 00:00:00 2001 From: Conor Dooley Date: Wed, 3 Aug 2022 19:54:00 +0100 Subject: [PATCH] dt-bindings: riscv: fix SiFive l2-cache's cache-sets Fix device tree schema validation error messages for the SiFive Unmatched: ' cache-sets:0:0: 1024 was expected'. The existing bindings allow for just 1024 cache-sets but the fu740 on Unmatched the has 2048 cache-sets. The ISA itself permits any arbitrary power of two, however this is not supported by dt-schema. The RTL for the IP, to which the number of cache-sets is a tunable parameter, has been released publicly so speculatively adding a small number of "reasonable" values seems unwise also. Instead, as the binding only supports two distinct controllers: add 2048 and explicitly lock it to the fu740's l2 cache while limiting 1024 to the l2 cache on the fu540. Fixes: af951c3a113b ("dt-bindings: riscv: Update l2 cache DT documentation to add support for SiFive FU740") Reported-by: Atul Khare Signed-off-by: Conor Dooley Reviewed-by: Krzysztof Kozlowski Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20220803185359.942928-1-mail@conchuod.ie Signed-off-by: Palmer Dabbelt --- .../devicetree/bindings/riscv/sifive-l2-cache.yaml | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml b/Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml index e2d330bd4608..69cdab18d629 100644 --- a/Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml +++ b/Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml @@ -46,7 +46,7 @@ properties: const: 2 cache-sets: - const: 1024 + enum: [1024, 2048] cache-size: const: 2097152 @@ -84,6 +84,8 @@ then: description: | Must contain entries for DirError, DataError and DataFail signals. maxItems: 3 + cache-sets: + const: 1024 else: properties: @@ -91,6 +93,8 @@ else: description: | Must contain entries for DirError, DataError, DataFail, DirFail signals. minItems: 4 + cache-sets: + const: 2048 additionalProperties: false