diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst
index 0ae52156db75f2fd53f6be495d64f4e56dbdff68..3cbbe4502e18c824a483a6f728964f41d00f6f2a 100644
--- a/Documentation/admin-guide/sysctl/kernel.rst
+++ b/Documentation/admin-guide/sysctl/kernel.rst
@@ -1069,6 +1069,16 @@ compilation sees a 1% slowdown, other systems and workloads may vary.
 stop-a (SPARC only)
 ===================
 
+Controls Stop-A:
+
+= ====================================
+0 Stop-A has no effect.
+1 Stop-A breaks to the PROM (default).
+= ====================================
+
+Stop-A is always enabled on a panic, so that the user can return to
+the boot PROM.
+
 
 sysrq
 =====