From: Joseph Lo <josephl@nvidia.com>
To: Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>
Cc: linux-tegra@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Joseph Lo <josephl@nvidia.com>
Subject: [PATCH 4/6] arm64: dts: tegra210: add CPU idle states properties
Date: Mon, 7 Jan 2019 11:28:08 +0800 [thread overview]
Message-ID: <20190107032810.13522-5-josephl@nvidia.com> (raw)
In-Reply-To: <20190107032810.13522-1-josephl@nvidia.com>
Add idle states properties for generic ARM CPU idle driver. This
includes a C7 state which is the power down state of CPU cores.
Signed-off-by: Joseph Lo <josephl@nvidia.com>
---
Note:
This dt patch depends on the DT changes in below series.
http://patchwork.ozlabs.org/project/linux-tegra/list/?series=84380
---
arch/arm64/boot/dts/nvidia/tegra210.dtsi | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
index 143bd103c923..b583d3065946 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
@@ -1308,24 +1308,41 @@
<&dfll>;
clock-names = "cpu_g", "pll_x", "pll_p", "dfll";
clock-latency = <300000>;
+ cpu-idle-states = <&C7>;
};
cpu@1 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <1>;
+ cpu-idle-states = <&C7>;
};
cpu@2 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <2>;
+ cpu-idle-states = <&C7>;
};
cpu@3 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <3>;
+ cpu-idle-states = <&C7>;
+ };
+
+ idle-states {
+ entry-method = "psci";
+
+ C7: c7 {
+ compatible = "arm,idle-state";
+ arm,psci-suspend-param = <0x40000007>;
+ wakeup-latency-us = <130>;
+ min-residency-us = <1000>;
+ idle-state-name = "c7-cpu-powergated";
+ status = "disabled";
+ };
};
};
--
2.20.1
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next prev parent reply other threads:[~2019-01-07 3:29 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-07 3:28 [PATCH 0/6] Add CPUidle support for Tegra210 Joseph Lo
2019-01-07 3:28 ` [PATCH 1/6] dt-bindings: timer: add Tegra210 timer Joseph Lo
2019-01-11 22:21 ` Rob Herring
2019-01-24 10:30 ` Jon Hunter
2019-01-25 3:23 ` Joseph Lo
2019-01-25 12:01 ` Jon Hunter
2019-01-25 12:06 ` Jon Hunter
2019-01-28 3:09 ` Joseph Lo
2019-01-07 3:28 ` [PATCH 2/6] clocksource: tegra: add Tegra210 timer driver Joseph Lo
2019-01-24 11:09 ` Jon Hunter
2019-01-25 4:12 ` Joseph Lo
2019-01-07 3:28 ` [PATCH 3/6] arm64: dts: tegra210: fix timer node Joseph Lo
2019-01-24 11:16 ` Jon Hunter
2019-01-25 3:56 ` Joseph Lo
2019-01-07 3:28 ` Joseph Lo [this message]
2019-01-24 11:21 ` [PATCH 4/6] arm64: dts: tegra210: add CPU idle states properties Jon Hunter
2019-01-25 3:58 ` Joseph Lo
2019-01-07 3:28 ` [PATCH 5/6] arm64: dts: tegra210-p2180: Enable CPU idle support Joseph Lo
2019-01-07 3:28 ` [PATCH 6/6] arm64: dts: tegra210-smaug: " Joseph Lo
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