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-rw-r--r--docs/usage/configuration/config_documentation.md22
1 files changed, 21 insertions, 1 deletions
diff --git a/docs/usage/configuration/config_documentation.md b/docs/usage/configuration/config_documentation.md
index a17a8c2900..6601bba9f2 100644
--- a/docs/usage/configuration/config_documentation.md
+++ b/docs/usage/configuration/config_documentation.md
@@ -3025,6 +3025,16 @@ enable SAML login. You can either put your entire pysaml config inline using the
 option, or you can specify a path to a psyaml config file with the sub-option `config_path`.
 This setting has the following sub-options:
 
+* `idp_name`: A user-facing name for this identity provider, which is used to
+   offer the user a choice of login mechanisms.
+* `idp_icon`: An optional icon for this identity provider, which is presented
+   by clients and Synapse's own IdP picker page. If given, must be an
+   MXC URI of the format `mxc://<server-name>/<media-id>`. (An easy way to
+   obtain such an MXC URI is to upload an image to an (unencrypted) room
+   and then copy the "url" from the source of the event.)
+* `idp_brand`: An optional brand for this identity provider, allowing clients
+   to style the login flow according to the identity provider in question.
+   See the [spec](https://spec.matrix.org/latest/) for possible options here.
 * `sp_config`: the configuration for the pysaml2 Service Provider. See pysaml2 docs for format of config.
    Default values will be used for the `entityid` and `service` settings,
    so it is not normally necessary to specify them unless you need to
@@ -3176,7 +3186,7 @@ Options for each entry include:
 
 * `idp_icon`: An optional icon for this identity provider, which is presented
    by clients and Synapse's own IdP picker page. If given, must be an
-   MXC URI of the format mxc://<server-name>/<media-id>. (An easy way to
+   MXC URI of the format `mxc://<server-name>/<media-id>`. (An easy way to
    obtain such an MXC URI is to upload an image to an (unencrypted) room
    and then copy the "url" from the source of the event.)
 
@@ -3391,6 +3401,16 @@ Enable Central Authentication Service (CAS) for registration and login.
 Has the following sub-options:
 * `enabled`: Set this to true to enable authorization against a CAS server.
    Defaults to false.
+* `idp_name`: A user-facing name for this identity provider, which is used to
+   offer the user a choice of login mechanisms.
+* `idp_icon`: An optional icon for this identity provider, which is presented
+   by clients and Synapse's own IdP picker page. If given, must be an
+   MXC URI of the format `mxc://<server-name>/<media-id>`. (An easy way to
+   obtain such an MXC URI is to upload an image to an (unencrypted) room
+   and then copy the "url" from the source of the event.)
+* `idp_brand`: An optional brand for this identity provider, allowing clients
+   to style the login flow according to the identity provider in question.
+   See the [spec](https://spec.matrix.org/latest/) for possible options here.
 * `server_url`: The URL of the CAS authorization endpoint.
 * `displayname_attribute`: The attribute of the CAS response to use as the display name.
    If no name is given here, no displayname will be set.