diff --git a/linux/devices/devicedefinitions/PlocMPSoCDefinitions.h b/linux/devices/devicedefinitions/PlocMPSoCDefinitions.h
index f92cfd22..aa0f85b8 100644
--- a/linux/devices/devicedefinitions/PlocMPSoCDefinitions.h
+++ b/linux/devices/devicedefinitions/PlocMPSoCDefinitions.h
@@ -91,7 +91,9 @@ static const uint16_t LENGTH_TC_MEM_WRITE = 12;
 static const uint16_t LENGTH_TC_MEM_READ = 8;
 
 /**
- * TODO: Might be a good idea to document where this is coming from
+ * Maximum SP packet size as specified in the TAS Supversior ICD.
+ * https://eive-cloud.irs.uni-stuttgart.de/index.php/apps/files/?dir=/EIVE_TAS-ILH-IRS/ICD-PLOC/TAS&fileid=942896
+ * at sheet README
  */
 static constexpr size_t SP_MAX_SIZE = 1024;
 static const size_t MAX_REPLY_SIZE = SP_MAX_SIZE * 3;