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| author | Atish Patra <atishp@rivosinc.com> | 2026-08-07 19:24:32 -0600 |
|---|---|---|
| committer | Paul Walmsley <pjw@kernel.org> | 2026-08-07 19:24:32 -0600 |
| commit | 641f9fe9017420b41659e048253c0849eda02a96 (patch) | |
| tree | 746397e533bc44621458e94951caf0fb83e72dae | |
| parent | ebdec8d2c156b8e662cb350ce05b0f92275f6ffd (diff) | |
| download | linux-641f9fe9017420b41659e048253c0849eda02a96.tar.gz linux-641f9fe9017420b41659e048253c0849eda02a96.zip | |
dt-bindings: riscv: add Counter delegation ISA extensions description
Add description for the Smcdeleg/Ssccfg extension.
Signed-off-by: Atish Patra <atishp@rivosinc.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20260807-counter_delegation-v9-10-58658104e487@meta.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>
| -rw-r--r-- | Documentation/devicetree/bindings/riscv/extensions.yaml | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Documentation/devicetree/bindings/riscv/extensions.yaml index eee65cf73d6c..24efd3e1cf8e 100644 --- a/Documentation/devicetree/bindings/riscv/extensions.yaml +++ b/Documentation/devicetree/bindings/riscv/extensions.yaml @@ -181,6 +181,13 @@ properties: changes to interrupts as frozen at commit ccbddab ("Merge pull request #42 from riscv/jhauser-2023-RC4") of riscv-aia. + - const: smcdeleg + description: | + The standard Smcdeleg machine-level extension for the machine mode + to delegate the hpmcounters to supervisor mode so that they are + directly accessible in the supervisor mode as ratified in the + 20240213 version of the privileged ISA specification. + - const: smcntrpmf description: | The standard Smcntrpmf machine-level extension for the machine mode @@ -220,6 +227,14 @@ properties: behavioural changes to interrupts as frozen at commit ccbddab ("Merge pull request #42 from riscv/jhauser-2023-RC4") of riscv-aia. + - const: ssccfg + description: | + The standard Ssccfg supervisor-level extension for configuring + the delegated hpmcounters to be accessible directly in supervisor + mode as ratified in the 20240213 version of the privileged ISA + specification. This extension depends on Sscsrind, Smcdeleg, Zihpm, + Zicntr extensions. + - const: ssccptr description: | The standard Ssccptr extension for main memory (cacheability and @@ -1135,6 +1150,32 @@ properties: allOf: - const: zilsd - const: zca + # Smcdeleg depends on Sscsrind, Zihpm, Zicntr + - if: + contains: + const: smcdeleg + then: + allOf: + - contains: + const: sscsrind + - contains: + const: zihpm + - contains: + const: zicntr + # Ssccfg depends on Smcdeleg, Sscsrind, Zihpm, Zicntr + - if: + contains: + const: ssccfg + then: + allOf: + - contains: + const: smcdeleg + - contains: + const: sscsrind + - contains: + const: zihpm + - contains: + const: zicntr allOf: # Zcf extension does not exist on rv64 |