The actual name for MMCCAM sd block devices is sdda.

Pointed out by: kibab@

share/man/man4/scsi.4

@@ -24,7 +24,7 @@
 .\" SUCH DAMAGE.
 .\"
 .\" $FreeBSD$
-.Dd June 6, 2020
+.Dd June 18, 2020
 .Dt CAM 4
 .Os
 .Sh NAME
@@ -330,7 +330,7 @@ SCSI or SAS device, or devices that accept SCSI CDBs for I/O.
 ATA or SATA device
 .It Xr nda 4
 NVME device
-.It Xr mda 4
+.It Xr sdda 4
 An SD or MMC block storage device.
 .El
 .Pp
@@ -441,7 +441,7 @@ for details.
 .Xr ada 4 ,
 .Xr da 4 ,
 .Xr nda 4 ,
-.\" .Xr mda 4 ,
+.\" .Xr sdda 4 ,
 .Xr pass 4 ,
 .Xr sa 4
 .Pp