doc: Mention that High Speed support depends on Secure Simple Pairing

diff --git a/doc/mgmt-api.txt b/doc/mgmt-api.txt
index 009fcb2..c159049 100644 (file)
--- a/doc/mgmt-api.txt
+++ b/doc/mgmt-api.txt
@@ -448,8 +448,14 @@ Set High Speed Command
        This command can be used when the controller is not powered and
        all settings will be programmed once powered.
 
-       In case the kernel subsystem does not support High Speed, the
-       command will fail regardless with Not Supported error.
+       To enable High Speed support, it is required that Secure Simple
+       Pairing support is enabled first. High Speed support is not
+       possible for connections without Secure Simple Pairing.
+
+       When switching Secure Simple Pairing off, the support for High
+       Speed will be switched off as well. Switching Secure Simple
+       Pairing back on, will not re-enable High Speed support. That
+       needs to be done manually.
 
        This command generates a Command Complete event on success or
        a Command Status event on failure.