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    ARM64: dts: meson: disable sd-uhs modes on the libretech-cc · d5b4885b
    Jerome Brunet 提交于
    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: 3cde63eb ("ARM64: dts: meson-gxl: libretech-cc: enable high speed modes")
    Signed-off-by: NJerome Brunet <jbrunet@baylibre.com>
    Cc: stable@vger.kernel.org
    Signed-off-by: NKevin Hilman <khilman@baylibre.com>
    d5b4885b
meson-gxl-s905x-libretech-cc.dts 5.9 KB