linux-kernel - [RFC PATCH 4/4] arm64: dts: tegra194: Add CPU idle states

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1619123448-10138-5-git-send-email-skomatineni@nvidia.com>
Date:   Thu, 22 Apr 2021 13:30:48 -0700
From:   Sowjanya Komatineni <skomatineni@...dia.com>
To:     <sudeep.holla@....com>, <souvik.chakravarty@....com>,
        <thierry.reding@...il.com>, <skomatineni@...dia.com>,
        <mark.rutland@....com>, <lorenzo.pieralisi@....com>,
        <daniel.lezcano@...aro.org>, <robh+dt@...nel.org>
CC:     <jonathanh@...dia.com>, <ksitaraman@...dia.com>,
        <sanjayc@...dia.com>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-pm@...r.kernel.org>, <devicetree@...r.kernel.org>
Subject: [RFC PATCH 4/4] arm64: dts: tegra194: Add CPU idle states

This patch adds CPU core and cluster idle states to Tegra194
device tree

Signed-off-by: Sowjanya Komatineni <skomatineni@...dia.com>
---
 arch/arm64/boot/dts/nvidia/tegra194.dtsi | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index 9449156..c3b478e 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -2161,6 +2161,7 @@
 			device_type = "cpu";
 			reg = <0x000>;
 			enable-method = "psci";
+			cpu-idle-states = <&C6>;
 			i-cache-size = <131072>;
 			i-cache-line-size = <64>;
 			i-cache-sets = <512>;
@@ -2175,6 +2176,7 @@
 			device_type = "cpu";
 			reg = <0x001>;
 			enable-method = "psci";
+			cpu-idle-states = <&C6>;
 			i-cache-size = <131072>;
 			i-cache-line-size = <64>;
 			i-cache-sets = <512>;
@@ -2189,6 +2191,7 @@
 			device_type = "cpu";
 			reg = <0x100>;
 			enable-method = "psci";
+			cpu-idle-states = <&C6>;
 			i-cache-size = <131072>;
 			i-cache-line-size = <64>;
 			i-cache-sets = <512>;
@@ -2203,6 +2206,7 @@
 			device_type = "cpu";
 			reg = <0x101>;
 			enable-method = "psci";
+			cpu-idle-states = <&C6>;
 			i-cache-size = <131072>;
 			i-cache-line-size = <64>;
 			i-cache-sets = <512>;
@@ -2217,6 +2221,7 @@
 			device_type = "cpu";
 			reg = <0x200>;
 			enable-method = "psci";
+			cpu-idle-states = <&C6>;
 			i-cache-size = <131072>;
 			i-cache-line-size = <64>;
 			i-cache-sets = <512>;
@@ -2231,6 +2236,7 @@
 			device_type = "cpu";
 			reg = <0x201>;
 			enable-method = "psci";
+			cpu-idle-states = <&C6>;
 			i-cache-size = <131072>;
 			i-cache-line-size = <64>;
 			i-cache-sets = <512>;
@@ -2245,6 +2251,7 @@
 			device_type = "cpu";
 			reg = <0x300>;
 			enable-method = "psci";
+			cpu-idle-states = <&C6>;
 			i-cache-size = <131072>;
 			i-cache-line-size = <64>;
 			i-cache-sets = <512>;
@@ -2259,6 +2266,7 @@
 			device_type = "cpu";
 			reg = <0x301>;
 			enable-method = "psci";
+			cpu-idle-states = <&C6>;
 			i-cache-size = <131072>;
 			i-cache-line-size = <64>;
 			i-cache-sets = <512>;
@@ -2343,6 +2351,17 @@
 			cache-line-size = <64>;
 			cache-sets = <4096>;
 		};
+
+		idle-states {
+			entry-method = "arm,psci";
+			C6: c6 {
+				compatible = "arm,idle-state";
+				wakeup-latency-us = <2000>;
+				min-residency-us = <30000>;
+				arm,psci-suspend-param = <0x6>;
+				status = "okay";
+			};
+		};
 	};
 
 	psci {
-- 
2.7.4