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https://github.com/torvalds/linux
05 April 2024, 19:05:47 UTC
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 
ARM64: dts: meson: disable sd-uhs modes on the libretech-cc
 
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
Makefile -rw-r--r-- 361 bytes
compat.c -rw-r--r-- 2.2 KB
ipc_sysctl.c -rw-r--r-- 5.4 KB
mq_sysctl.c -rw-r--r-- 2.9 KB
mqueue.c -rw-r--r-- 39.0 KB
msg.c -rw-r--r-- 29.7 KB
msgutil.c -rw-r--r-- 3.6 KB
namespace.c -rw-r--r-- 4.8 KB
sem.c -rw-r--r-- 61.2 KB
shm.c -rw-r--r-- 41.6 KB
syscall.c -rw-r--r-- 4.7 KB
util.c -rw-r--r-- 22.6 KB
util.h -rw-r--r-- 8.9 KB
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