tree f8a33b7a08d4041cfa5a27d287629243b9a10cab
parent 18290e921983b81ec45048fd9c2dd79f73c03204
author Bipin Ravi <bipin.ravi@arm.com> 1693335549 -0500
committer Bipin Ravi <bipin.ravi@arm.com> 1693339556 -0500

fix(cpus): workaround for Neoverse N2 erratum 2009478

Neoverse N2 erratum 2009478 is a Cat B erratum that applies to
revision r0p0 and is fixed in r0p1. The workaround is to clear
the ED bit for all core error records before setting the PWRDN_EN
bit in CPUPWRCTLR_EL1 to request a power down.

SDEN documentation:
https://developer.arm.com/documentation/SDEN1982442/latest

Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Change-Id: Ic5ef58c9e795b90026af1d2b09edc0eea3ceee51