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authorJoseph Lo <josephl@nvidia.com>2014-11-21 08:54:15 +0800
committerPatrick Georgi <pgeorgi@google.com>2015-04-10 20:48:01 +0200
commite28fd3626fb740a6b7679bef8a56d109bfa90014 (patch)
tree37a57f493d3668b57bd5f20d6350f7ffa2e6379c /src/cpu/allwinner
parent14b444b83be0fe3c3a7fc524265e64d535018049 (diff)
tegra132: psci: add cpu_on/off support
The CPU on/off functions are the method for the Kernel to support CPU hot-plug function in PSCI. To support this, we still need flow controller support to capture the WFI from the CPU and inform PMC to power gate the CPU core. On the other path, we turn on the CPU by toggling the PMC and use flow controller to let go when the power is steady. BUG=chrome-os-partner:32136 BRANCH=None TEST=built the kernel with PSCI enabled, check both of the CPUs are coming up, test the CPU hot-plug is working on Ryu Change-Id: If2c529b6719c5747d5aea95fb5049b2d7353ff17 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 0f078e89daad1c4d8b342a395f36b3e922af66f5 Original-Change-Id: Ie49940adb2966dcc9967d2fcc9b1e0dcd6d98743 Original-Signed-off-by: Joseph Lo <josephl@nvidia.com> Original-Reviewed-on: https://chromium-review.googlesource.com/231267 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/9542 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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