From: Ikjoon Jang <ikjn@chromium.org>
To: linux-mediatek@lists.infradead.org,
James Liao <jamesjj.liao@mediatek.com>
Cc: Rob Herring <robh+dt@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, hsinyi@chromium.org,
drinkcat@chromium.org, Ikjoon Jang <ikjn@chromium.org>
Subject: [PATCH] arm64: dts: mt8183: adjust cpuidle target residency
Date: Tue, 25 Feb 2020 16:07:53 +0800 [thread overview]
Message-ID: <20200225080752.200952-1-ikjn@chromium.org> (raw)
Split a cluster level cpuidle state into two, so mt8183 variant
boards can adjust parameters for each cluster, and reduce cluster0's
default target residency to 1000us as power measurements showed that
its minimum residency is slightly less than cluster1's 1300us.
Signed-off-by: Ikjoon Jang <ikjn@chromium.org>
---
arch/arm64/boot/dts/mediatek/mt8183.dtsi | 26 ++++++++++++++++--------
1 file changed, 17 insertions(+), 9 deletions(-)
diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
index f1381e77918b..5c7dd262eaf3 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
@@ -74,7 +74,7 @@ cpu0: cpu@0 {
reg = <0x000>;
enable-method = "psci";
capacity-dmips-mhz = <741>;
- cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
+ cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP0>;
};
cpu1: cpu@1 {
@@ -83,7 +83,7 @@ cpu1: cpu@1 {
reg = <0x001>;
enable-method = "psci";
capacity-dmips-mhz = <741>;
- cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
+ cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP0>;
};
cpu2: cpu@2 {
@@ -92,7 +92,7 @@ cpu2: cpu@2 {
reg = <0x002>;
enable-method = "psci";
capacity-dmips-mhz = <741>;
- cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
+ cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP0>;
};
cpu3: cpu@3 {
@@ -101,7 +101,7 @@ cpu3: cpu@3 {
reg = <0x003>;
enable-method = "psci";
capacity-dmips-mhz = <741>;
- cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
+ cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP0>;
};
cpu4: cpu@100 {
@@ -110,7 +110,7 @@ cpu4: cpu@100 {
reg = <0x100>;
enable-method = "psci";
capacity-dmips-mhz = <1024>;
- cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
+ cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP1>;
};
cpu5: cpu@101 {
@@ -119,7 +119,7 @@ cpu5: cpu@101 {
reg = <0x101>;
enable-method = "psci";
capacity-dmips-mhz = <1024>;
- cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
+ cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP1>;
};
cpu6: cpu@102 {
@@ -128,7 +128,7 @@ cpu6: cpu@102 {
reg = <0x102>;
enable-method = "psci";
capacity-dmips-mhz = <1024>;
- cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
+ cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP1>;
};
cpu7: cpu@103 {
@@ -137,7 +137,7 @@ cpu7: cpu@103 {
reg = <0x103>;
enable-method = "psci";
capacity-dmips-mhz = <1024>;
- cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
+ cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP1>;
};
idle-states {
@@ -152,7 +152,15 @@ CPU_SLEEP: cpu-sleep {
min-residency-us = <800>;
};
- CLUSTER_SLEEP: cluster-sleep {
+ CLUSTER_SLEEP0: cluster-sleep@0 {
+ compatible = "arm,idle-state";
+ local-timer-stop;
+ arm,psci-suspend-param = <0x01010001>;
+ entry-latency-us = <250>;
+ exit-latency-us = <400>;
+ min-residency-us = <1000>;
+ };
+ CLUSTER_SLEEP1: cluster-sleep@1 {
compatible = "arm,idle-state";
local-timer-stop;
arm,psci-suspend-param = <0x01010001>;
--
2.25.0.265.gbab2e86ba0-goog
next reply other threads:[~2020-02-25 8:09 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-25 8:07 Ikjoon Jang [this message]
2020-04-13 16:57 ` Matthias Brugger
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