[aes] Document idle indication signal for clock manager
Signed-off-by: Pirmin Vogel <vogelpi@lowrisc.org>
diff --git a/hw/ip/aes/doc/_index.md b/hw/ip/aes/doc/_index.md
index e531b32..9a06143 100644
--- a/hw/ip/aes/doc/_index.md
+++ b/hw/ip/aes/doc/_index.md
@@ -118,6 +118,12 @@
{{< hwcfg "hw/ip/aes/data/aes.hjson" >}}
+The table below lists other signals of the AES unit.
+
+Signal | Direction | Type | Description
+-------------------|------------------|------------------------|---------------
+`idle_o` | `output` | `logic` | Idle indication signal for clock manager.
+
## Design Details
