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/rk3399_ARM-atf/lib/cpus/aarch64/
H A Dcortex_x2.S989c798d5ad7a3965747c54695f5f307bd44f37c Sat Jul 12 03:45:42 UTC 2025 John Powell <john.powell@arm.com> fix(cpus): workaround for Cortex-X2 erratum 2291219

Cortex-X2 erratum 2291219 is a Cat B erratum that applies to
revisions r0p0, r1p0 and r2p0 and is fixed in r2p1.

The workaround is to set CPUACTLR2_EL1[36] before the power
down sequence that sets PWRDN_EN and executes WFI. This bit
should be be cleared after exiting WFI.

SDEN documentation:
https://developer.arm.com/documentation/SDEN-1775100/latest

Change-Id: I43af57961feba3a1c001d09ad804740b996f1db7
Signed-off-by: John Powell <john.powell@arm.com>
/rk3399_ARM-atf/docs/design/
H A Dcpu-specific-build-macros.rst989c798d5ad7a3965747c54695f5f307bd44f37c Sat Jul 12 03:45:42 UTC 2025 John Powell <john.powell@arm.com> fix(cpus): workaround for Cortex-X2 erratum 2291219

Cortex-X2 erratum 2291219 is a Cat B erratum that applies to
revisions r0p0, r1p0 and r2p0 and is fixed in r2p1.

The workaround is to set CPUACTLR2_EL1[36] before the power
down sequence that sets PWRDN_EN and executes WFI. This bit
should be be cleared after exiting WFI.

SDEN documentation:
https://developer.arm.com/documentation/SDEN-1775100/latest

Change-Id: I43af57961feba3a1c001d09ad804740b996f1db7
Signed-off-by: John Powell <john.powell@arm.com>
/rk3399_ARM-atf/lib/cpus/
H A Dcpu-ops.mk989c798d5ad7a3965747c54695f5f307bd44f37c Sat Jul 12 03:45:42 UTC 2025 John Powell <john.powell@arm.com> fix(cpus): workaround for Cortex-X2 erratum 2291219

Cortex-X2 erratum 2291219 is a Cat B erratum that applies to
revisions r0p0, r1p0 and r2p0 and is fixed in r2p1.

The workaround is to set CPUACTLR2_EL1[36] before the power
down sequence that sets PWRDN_EN and executes WFI. This bit
should be be cleared after exiting WFI.

SDEN documentation:
https://developer.arm.com/documentation/SDEN-1775100/latest

Change-Id: I43af57961feba3a1c001d09ad804740b996f1db7
Signed-off-by: John Powell <john.powell@arm.com>