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From: Peter Griffin <peter.griffin@linaro.org>
To: "André Draszik" <andre.draszik@linaro.org>,
	"Tudor Ambarus" <tudor.ambarus@linaro.org>,
	"Rob Herring" <robh@kernel.org>,
	"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
	"Conor Dooley" <conor+dt@kernel.org>,
	"Alim Akhtar" <alim.akhtar@samsung.com>,
	"Krzysztof Kozlowski" <krzk@kernel.org>
Cc: William Mcvicker <willmcvicker@google.com>,
	 Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
	 linux-arm-kernel@lists.infradead.org,
	linux-samsung-soc@vger.kernel.org,  devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org,  kernel-team@android.com,
	Peter Griffin <peter.griffin@linaro.org>,
	 Will Deacon <willdeacon@google.com>,
	 Youngmin Nam <youngmin.nam@samsung.com>
Subject: [PATCH 1/2] arm64: dts: exynos: gs101: Add 'local-timer-stop' to cpuidle nodes
Date: Sat, 24 May 2025 08:30:29 +0100	[thread overview]
Message-ID: <20250524-gs101-cpuidle-v1-1-aea77a7842a6@linaro.org> (raw)
In-Reply-To: <20250524-gs101-cpuidle-v1-0-aea77a7842a6@linaro.org>

From: Will Deacon <willdeacon@google.com>

In preparation for switching to the architected timer as the primary
clockevents device, mark the cpuidle nodes with the 'local-timer-stop'
property to indicate that an alternative clockevents device must be
used for waking up from the "c2" idle state.

Signed-off-by: Will Deacon <willdeacon@google.com>
[Original commit from https://android.googlesource.com/kernel/gs/+/a896fd98638047989513d05556faebd28a62b27c]
Signed-off-by: Will McVicker <willmcvicker@google.com>
Reviewed-by: Youngmin Nam <youngmin.nam@samsung.com>
Tested-by: Youngmin Nam <youngmin.nam@samsung.com>
Fixes: ea89fdf24fd9 ("arm64: dts: exynos: google: Add initial Google gs101 SoC support")
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
 arch/arm64/boot/dts/exynos/google/gs101.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
index 48c691fd0a3ae430b5d66b402610d23b72b144d7..94aa0ffb9a9760c58818c0417001fd187b048ea8 100644
--- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi
+++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
@@ -155,6 +155,7 @@ ananke_cpu_sleep: cpu-ananke-sleep {
 				idle-state-name = "c2";
 				compatible = "arm,idle-state";
 				arm,psci-suspend-param = <0x0010000>;
+				local-timer-stop;
 				entry-latency-us = <70>;
 				exit-latency-us = <160>;
 				min-residency-us = <2000>;
@@ -164,6 +165,7 @@ enyo_cpu_sleep: cpu-enyo-sleep {
 				idle-state-name = "c2";
 				compatible = "arm,idle-state";
 				arm,psci-suspend-param = <0x0010000>;
+				local-timer-stop;
 				entry-latency-us = <150>;
 				exit-latency-us = <190>;
 				min-residency-us = <2500>;
@@ -173,6 +175,7 @@ hera_cpu_sleep: cpu-hera-sleep {
 				idle-state-name = "c2";
 				compatible = "arm,idle-state";
 				arm,psci-suspend-param = <0x0010000>;
+				local-timer-stop;
 				entry-latency-us = <235>;
 				exit-latency-us = <220>;
 				min-residency-us = <3500>;

-- 
2.49.0.1151.ga128411c76-goog


  reply	other threads:[~2025-05-24  7:30 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-05-24  7:30 [PATCH 0/2] Enable CPU Idle for gs101 Peter Griffin
2025-05-24  7:30 ` Peter Griffin [this message]
2025-05-24  7:30 ` [PATCH 2/2] soc: samsung: exynos-pmu: " Peter Griffin
2025-05-25  8:30   ` kernel test robot

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