* [PATCH 1/2] arm64: tegra: Mark architected timer as always on
@ 2019-06-14 10:52 Thierry Reding
2019-06-14 10:52 ` [PATCH 2/2] arm64: tegra: Don't use architected timer for suspend on Tegra210 Thierry Reding
0 siblings, 1 reply; 2+ messages in thread
From: Thierry Reding @ 2019-06-14 10:52 UTC (permalink / raw)
To: Thierry Reding
Cc: linux-tegra, Peter De Schrijver, Dmitry Osipenko,
linux-arm-kernel, Jon Hunter
From: Thierry Reding <treding@nvidia.com>
The architected timer on Tegra186 and Tegra194 is in an always on power
partition and its reference clock will always run, so mark the timer as
always on.
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
arch/arm64/boot/dts/nvidia/tegra186.dtsi | 1 +
arch/arm64/boot/dts/nvidia/tegra194.dtsi | 1 +
2 files changed, 2 insertions(+)
diff --git a/arch/arm64/boot/dts/nvidia/tegra186.dtsi b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
index 0f4eacaf5b77..3c811943e700 100644
--- a/arch/arm64/boot/dts/nvidia/tegra186.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
@@ -1360,5 +1360,6 @@
<GIC_PPI 10
(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
interrupt-parent = <&gic>;
+ always-on;
};
};
diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index c77ca211fa8f..a2528312db5f 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -1053,5 +1053,6 @@
<GIC_PPI 10
(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
interrupt-parent = <&gic>;
+ always-on;
};
};
--
2.21.0
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^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH 2/2] arm64: tegra: Don't use architected timer for suspend on Tegra210
2019-06-14 10:52 [PATCH 1/2] arm64: tegra: Mark architected timer as always on Thierry Reding
@ 2019-06-14 10:52 ` Thierry Reding
0 siblings, 0 replies; 2+ messages in thread
From: Thierry Reding @ 2019-06-14 10:52 UTC (permalink / raw)
To: Thierry Reding
Cc: linux-tegra, Peter De Schrijver, Dmitry Osipenko,
linux-arm-kernel, Jon Hunter
From: Thierry Reding <treding@nvidia.com>
Due to an integration issue the architected timer on Tegra210 does not
remain on during system suspend (a.k.a. SC7). Mark it accordingly so
that it isn't considered as a means to track suspend time.
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
arch/arm64/boot/dts/nvidia/tegra210.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
index 58ca520d5230..96027572ac12 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
@@ -1435,6 +1435,7 @@
<GIC_PPI 10
(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
interrupt-parent = <&gic>;
+ arm,no-tick-in-suspend;
};
soctherm: thermal-sensor@700e2000 {
--
2.21.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 2+ messages in thread
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