NAME

rtsx —

Realtek SD card reader

SYNOPSIS

To compile this driver into the kernel, place the following lines in the kernel configuration file:

device mmc
device mmcsd
device rtsx

Alternatively, to load the driver as a module at boot time, place the following lines in loader.conf(5):

mmc_load="YES"
mmcsd_load="YES"
rtsx_load="YES"

The rtsx driver provides support for Realtek SD card reader. Driver attaches mmc bus on card insertion and detaches it on card removing.

The rtsx driver supports different specification compatible chips. The following chips have been verified to work:

It should also work for:

The rtsx driver was ported from OpenBSD with modifications found in Linux and NetBSD.

Henri Hennebert <hlh@restart.be>
Gary Jennejohn <gj@freebsd.org>
Jesper Schmitz Mouridsen <jsm@FreeBSD.org>

dev.rtsx.0.debug_mask can be set with the following masks:

RTS522A on Lenovo T470p, card detection and read-only switch are reversed. This is solved by adding in loader.conf(5):
dev.rtsx.0.inversion=1

The driver tries to automate those exceptions. If this automation is wrong, it can be avoided by adding in loader.conf(5):

dev.rtsx.0.inversion=0
Mounting a filesystem with write access on a card write protected may involve a kernel crash.
Suspend/Resume do not work under MMCCAM.