linux-kernel - Re: [PATCH v7] soc: samsung: exynos-pmu: Enable CPU Idle for gs101

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Message-Id: <175308588382.28993.16370211179082448125.b4-ty@linaro.org>
Date: Mon, 21 Jul 2025 10:18:03 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: André Draszik <andre.draszik@...aro.org>, 
 Tudor Ambarus <tudor.ambarus@...aro.org>, 
 Alim Akhtar <alim.akhtar@...sung.com>, 
 Krzysztof Kozlowski <krzk@...nel.org>, 
 Peter Griffin <peter.griffin@...aro.org>
Cc: William Mcvicker <willmcvicker@...gle.com>, 
 linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org, 
 linux-kernel@...r.kernel.org, kernel-team@...roid.com, sudeep.holla@....com
Subject: Re: [PATCH v7] soc: samsung: exynos-pmu: Enable CPU Idle for gs101


On Thu, 17 Jul 2025 17:22:36 +0100, Peter Griffin wrote:
> Register cpu pm notifiers for gs101 which call the
> gs101_cpu_pmu_online/offline callbacks which in turn program the ACPM
> C2 hint. This hint is required to actually enter the C2 idle state in
> addition to the PSCI calls due to limitations in the el3mon/ACPM firmware.
> 
> A couple of corner cases are handled, namely when the system is rebooting
> or suspending we ignore the request. Additionally the request is ignored if
> the CPU is in CPU hot plug. Some common code is refactored so that it can
> be called from both the CPU hot plug callbacks and CPU PM notifier taking
> into account that CPU PM notifiers are called with IRQs disabled whereas
> CPU hotplug callbacks are not.
> 
> [...]

Applied, thanks!

[1/1] soc: samsung: exynos-pmu: Enable CPU Idle for gs101
      (no commit info)

Best regards,
-- 
Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>