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-rw-r--r--util/superiotool/superiotool.h10
1 files changed, 8 insertions, 2 deletions
diff --git a/util/superiotool/superiotool.h b/util/superiotool/superiotool.h
index 1a10fb63ab..6e59933792 100644
--- a/util/superiotool/superiotool.h
+++ b/util/superiotool/superiotool.h
@@ -127,9 +127,15 @@ and print its vendor, name, ID, revision, and config port.\n"
#define EOT -1 /* End Of Table */
#define NOLDN -2 /* NO LDN needed */
-#define NANA -3 /* Not Available */
+#define NANA -3 /* Not Available:
+ Used for registers having externally controlled
+ values that can change during runtime like
+ GPIO input value registers. */
#define RSVD -4 /* Reserved */
-#define MISC -5 /* Needs special comment in output */
+#define MISC -5 /* Needs special comment in output:
+ Used for registers depending on external pin straps
+ configuring static, but board-specific settings like
+ SIO base address or AMD/Intel power seqencing type. */
#define MAXLDN 0x14 /* Biggest LDN */
#define LDNSIZE (MAXLDN + 3) /* Biggest LDN + 0 + NOLDN + EOT */
#define MAXNUMIDX 170 /* Maximum number of indices */