dt-bindings: riscv: Add Zawrs ISA extension description

Add description for the Zawrs (Wait-on-Reservation-Set) ISA extension which was ratified of riscv-isa-manual. Signed-off-by: Andrew Jones <[email protected]> Acked-by: Conor Dooley <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Palmer Dabbelt <[email protected]> Signed-off-by: Chen Pei <[email protected]>
ruyisdk · Sep 3, 2024 · ac7e2d8 · ac7e2d8
1 parent 85fbcb1
commit ac7e2d8
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Documentation/devicetree/bindings/riscv/extensions.yaml
@@ -165,6 +165,13 @@ properties:
             memory types as ratified in the 20191213 version of the privileged
             ISA specification.
 
+        - const: zawrs
+          description: |
+            The Zawrs extension for entering a low-power state or for trapping
+            to a hypervisor while waiting on a store to a memory location, as
+            ratified in commit 98918c844281 ("Merge pull request #1217 from
+            riscv/zawrs") of riscv-isa-manual.
+
         - const: zba
           description: |
             The standard Zba bit-manipulation extension for address generation