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-rw-r--r--sys/dev/asmc/asmcvar.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/dev/asmc/asmcvar.h b/sys/dev/asmc/asmcvar.h
index ae027ba33ae9..6388fc78fb69 100644
--- a/sys/dev/asmc/asmcvar.h
+++ b/sys/dev/asmc/asmcvar.h
@@ -175,7 +175,9 @@ struct asmc_softc {
#define ASMC_KEY_CLAMSHELL "MSLD" /* RO; 1 byte */
/*
- * Auto power on / Wake-on-LAN.
+ * Auto power-on after AC power loss (AUPO).
+ * When set, the machine boots automatically when AC power is restored
+ * after an unclean power loss. This is NOT Wake-on-LAN.
*/
#define ASMC_KEY_AUPO "AUPO" /* RW; 1 byte */