Messages in this thread | | | From | Will Deacon <> | Subject | [PATCH 0/2] Use Exynos-MCT timer as wakeup for Arm arch timer | Date | Tue, 8 Jun 2021 16:43:39 +0100 |
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Hi all,
These two patches build on top of my other series for adding per-cpu wakeup timers [1] which is currently queued in -tip [2].
The basic idea is to prefer the Arm architected timer, even when CLOCK_EVT_FEAT_C3STOP is set, as long as we have another timer which can be used for the per-cpu wakeup. These patches use Exynos-MCT as an example, since that driver currently goes out of its way to prevent use of the Arm architected timer due to issues with a 32-bit SoC.
Cheers,
Will
[1] https://lore.kernel.org/lkml/20210524221818.15850-1-will@kernel.org/ [2] https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/log/?h=timers/core
Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Cc: Chanwoo Choi <cw00.choi@samsung.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
--->8
Will Deacon (2): clocksource/drivers/exynos_mct: Prioritise Arm arch timer on arm64 clocksource/drivers/exynos_mct: Mark MCT device as CLOCK_EVT_FEAT_PERCPU
drivers/clocksource/exynos_mct.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-)
-- 2.32.0.rc1.229.g3e70b5a671-goog
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