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sgi: disable CPU power down bit in reset handler
Chandni Cherukuri authored
On SGI platforms, the 'CORE_PWRDN_EN' bit of 'CPUPWRCTLR_EL1'
register requires an explicit write to clear it for hotplug and
idle to function correctly. The reset value of this bit is zero
but it still requires this explicit clear to zero. This indicates
that this could be a model related issue but for now this issue can
be fixed be clearing the CORE_PWRDN_EN in the platform specific
reset handler function.

Change-Id: I4222930daa9a3abacdace6b7c3f4a5472ac0cb19
Signed-off-by: default avatarChandni Cherukuri <chandni.cherukuri@arm.com>
8e1cc449
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