ARM: exynos: MCPM: Restore big.LITTLE cpuidle support

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Call exynos_cpu_power_up(cpunr) unconditionally. This is needed by the
big.LITTLE cpuidle driver and has no side-effects on other code paths.

The additional soft-reset call during little core power up has been added
to properly boot all cores on the Exynos5422-based boards with secure
firmware (like Odroid XU3/XU4 family). This however broke big.LITTLE
CPUidle driver, which worked only on boards without secure firmware (like
Peach-Pit/Pi Chromebooks). Apply the workaround only when board is
running under secure firmware.

Fixes: 833b5794e3 ("ARM: EXYNOS: reset Little cores when cpu is up")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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Marek Szyprowski 2020-06-29 12:02:18 +02:00 • committed by Krzysztof Kozlowski

parent 5b17a04add

commit ea9dd8f61c

1 changed files with 7 additions and 3 deletions

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arch/arm/mach-exynos/mcpm-exynos.c

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