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dt-bindings: riscv: Add pointer masking ISA extensions
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The RISC-V Pointer Masking specification defines three extensions:
Smmpm, Smnpm, and Ssnpm. Document the behavior of these extensions as
following the ratified version 1.0 of the specification.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Charlie Jenkins <charlie@rivosinc.com>
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Link: https://lore.kernel.org/r/20241016202814.4061541-2-samuel.holland@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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Samuel Holland authored and Palmer Dabbelt committed Oct 24, 2024
1 parent 368546e commit 8727163
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18 changes: 18 additions & 0 deletions Documentation/devicetree/bindings/riscv/extensions.yaml
Original file line number Diff line number Diff line change
Expand Up @@ -128,6 +128,18 @@ properties:
changes to interrupts as frozen at commit ccbddab ("Merge pull
request #42 from riscv/jhauser-2023-RC4") of riscv-aia.
- const: smmpm
description: |
The standard Smmpm extension for M-mode pointer masking as
ratified at commit d70011dde6c2 ("Update to ratified state")
of riscv-j-extension.
- const: smnpm
description: |
The standard Smnpm extension for next-mode pointer masking as
ratified at commit d70011dde6c2 ("Update to ratified state")
of riscv-j-extension.
- const: smstateen
description: |
The standard Smstateen extension for controlling access to CSRs
Expand All @@ -147,6 +159,12 @@ properties:
and mode-based filtering as ratified at commit 01d1df0 ("Add ability
to manually trigger workflow. (#2)") of riscv-count-overflow.
- const: ssnpm
description: |
The standard Ssnpm extension for next-mode pointer masking as
ratified at commit d70011dde6c2 ("Update to ratified state")
of riscv-j-extension.
- const: sstc
description: |
The standard Sstc supervisor-level extension for time compare as
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