• Arnd Bergmann's avatar
    ARM: ux500: move soc_id driver to drivers/soc · 18a99278
    Arnd Bergmann authored
    As the ux500 id code is basically a standalone driver, we can move it
    out of the arch code into drivers/soc/ux500.
    This is a user-visible change, as it moves all the devices in sysfs
    from /sys/devices/soc0/ to /sys/devices/ and leaves the soc0 node as a
    separate device.
    Originally the idea was to put all on-chip devices under the soc node,
    and ux500 was the first platform to have this device, but later platforms
    almost all didn't follow that pattern, so this makes the platform do
    the same thing as everyone else.
    Since the platform is really obsolete now, I am optimistic that nothing
    will break after moving the devices around.
    As the SoC driver no longer has access to the private header files,
    I'm changing the code to instead look up the address of the backupram
    from devicetree, which is a good idea anyway.
    Finally, having a separate Kconfig symbol means the driver is now
    optional and could even be a loadable module rather than always being
    built-in if we allowed that for soc_device.
    Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
    [Fixup mising Makefile, fixup BB_UID_BASE to fc0]
    Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
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