• Leonard Crestez's avatar
    ARM: dts: imx6sx-sdb: Remove OPP override · d8581c7c
    Leonard Crestez authored
    The board file for imx6sx-sdb overrides cpufreq operating points to use
    higher voltages. This is done because the board has a shared rail for
    VDD_ARM_IN and VDD_SOC_IN and when using LDO bypass the shared voltage
    needs to be a value suitable for both ARM and SOC.
    
    This only applies to LDO bypass mode, a feature not present in upstream.
    When LDOs are enabled the effect is to use higher voltages than necessary
    for no good reason.
    
    Setting these higher voltages can make some boards fail to boot with ugly
    semi-random crashes reminiscent of memory corruption. These failures only
    happen on board rev. C, rev. B is reported to still work.
    Signed-off-by: default avatarLeonard Crestez <leonard.crestez@nxp.com>
    Fixes: 54183bd7 ("ARM: imx6sx-sdb: add revb board and make it default")
    Cc: stable@vger.kernel.org
    Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
    d8581c7c
imx6sx-sdb.dts 2.7 KB