https://github.com/torvalds/linux
Revision d5b4885b1dff72ac670b518cfeaac719d768bd4d authored by Jerome Brunet on 26 April 2018, 10:50:46 UTC, committed by Kevin Hilman on 27 June 2018, 23:48:25 UTC
There is a problem with the sd-uhs mode when doing a soft reboot.
Switching back from 1.8v to 3.3v messes with the card, which no longer
respond (timeout errors). According to the specification, we should
perform a card reset (power cycling the card) but this is something we
cannot control on this design.

Then the only solution to restore the communication with the card is an
"unplug-plug" which is not acceptable

Until we find a solution, if any, disable the sd-uhs modes on this design.
For the people using uhs at the moment, there will a performance drop as
a result.

Fixes: 3cde63ebc85c ("ARM64: dts: meson-gxl: libretech-cc: enable high speed modes")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Cc: stable@vger.kernel.org
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
1 parent ce397d2
History
Tip revision: d5b4885b1dff72ac670b518cfeaac719d768bd4d authored by Jerome Brunet on 26 April 2018, 10:50:46 UTC
ARM64: dts: meson: disable sd-uhs modes on the libretech-cc
Tip revision: d5b4885
File Mode Size
Documentation
LICENSES
arch
block
certs
crypto
drivers
firmware
fs
include
init
ipc
kernel
lib
mm
net
samples
scripts
security
sound
tools
usr
virt
.clang-format -rw-r--r-- 12.8 KB
.cocciconfig -rw-r--r-- 59 bytes
.get_maintainer.ignore -rw-r--r-- 31 bytes
.gitattributes -rw-r--r-- 30 bytes
.gitignore -rw-r--r-- 1.5 KB
.mailmap -rw-r--r-- 9.3 KB
COPYING -rw-r--r-- 423 bytes
CREDITS -rw-r--r-- 96.3 KB
Kbuild -rw-r--r-- 2.2 KB
Kconfig -rw-r--r-- 321 bytes
MAINTAINERS -rw-r--r-- 448.8 KB
Makefile -rw-r--r-- 58.3 KB
README -rw-r--r-- 800 bytes

README

back to top