diff --git a/src/hw/mirny_almazny.md b/src/hw/mirny_almazny.md
index 24a122e..b981ab5 100644
--- a/src/hw/mirny_almazny.md
+++ b/src/hw/mirny_almazny.md
@@ -8,9 +8,10 @@
 ```json
 {
   "type": "mirny",
-  "almazny": true, // for mirny with almazny only 
+  "almazny": true, // for mirny with almazny only
+  "almazny_hw_rev": "v1.2", // optional, must be provided for legacy (<=v1.1) Almazny
   "ports": [<port num>],
-  "clk_sel": 2, // optional
+  "clk_sel": "mmcx", // optional
   "refclk": 125e6 // optional
 }
 ```