tree ba6e7d81c58f8ca6d70261e267e4e93c2986d689
parent b63640543b4d88c200d87f2dc54c644876a4abd5
author Madhukar Pappireddy <madhukar.pappireddy@arm.com> 1572463479 -0500
committer Madhukar Pappireddy <madhukar.pappireddy@arm.com> 1586963424 -0500

Provide a hint to power controller for DSU cluster power down

By writing 0 to CLUSTERPWRDN DSU register bit 0, we send an
advisory to the power controller that cluster power is not required
when all cores are powered down.

The AArch32 CLUSTERPWRDN register is architecturally mapped to the
AArch64 CLUSTERPWRDN_EL1 register

Change-Id: Ie6e67c1c7d811fa25c51e2e405ca7f59bd20c81b
Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>