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Message-Id: <20250831-tegra186-icc-v1-8-607ddc53b507@gmail.com>
Date: Sun, 31 Aug 2025 22:33:56 -0500
From: Aaron Kling via B4 Relay <devnull+webgeek1234.gmail.com@...nel.org>
To: Krzysztof Kozlowski <krzk@...nel.org>, Rob Herring <robh@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Thierry Reding <thierry.reding@...il.com>,
Jonathan Hunter <jonathanh@...dia.com>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Viresh Kumar <viresh.kumar@...aro.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
linux-tegra@...r.kernel.org, linux-pm@...r.kernel.org,
Aaron Kling <webgeek1234@...il.com>
Subject: [PATCH 8/8] arm64: tegra: Add CPU OPP tables for Tegra194
From: Aaron Kling <webgeek1234@...il.com>
Add OPP table and interconnects property to scale DDR frequency with
CPU frequency for better performance. Each operating point entry of
the OPP table has CPU freq to per MC channel bandwidth mapping.
One table is added for each cluster even though the table data is
same because the bandwidth request is per cluster. This is done
because the OPP framework creates a single icc path and hence single
bandwidth request if the table is marked as 'opp-shared' and shared
among all clusters. For us, the OPP table data is same but the MC
Client ID argument to interconnects property is different for each
cluster. So, having per cluster tables makes different icc paths for
each cluster and helps to make per cluster BW requests.
Signed-off-by: Aaron Kling <webgeek1234@...il.com>
---
arch/arm64/boot/dts/nvidia/tegra194.dtsi | 636 +++++++++++++++++++++++++++++++
1 file changed, 636 insertions(+)
diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index 1399342f23e1c4f73b278adc66dfb948fc30d326..a6c4c6c73707354f62f778bbea5afaec3fdbe22d 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -2890,6 +2890,8 @@ cpu0_0: cpu@0 {
device_type = "cpu";
reg = <0x000>;
enable-method = "psci";
+ operating-points-v2 = <&cl0_opp_tbl>;
+ interconnects = <&mc TEGRA_ICC_MC_CPU_CLUSTER0 &emc>;
i-cache-size = <131072>;
i-cache-line-size = <64>;
i-cache-sets = <512>;
@@ -2904,6 +2906,8 @@ cpu0_1: cpu@1 {
device_type = "cpu";
reg = <0x001>;
enable-method = "psci";
+ operating-points-v2 = <&cl0_opp_tbl>;
+ interconnects = <&mc TEGRA_ICC_MC_CPU_CLUSTER0 &emc>;
i-cache-size = <131072>;
i-cache-line-size = <64>;
i-cache-sets = <512>;
@@ -2918,6 +2922,8 @@ cpu1_0: cpu@100 {
device_type = "cpu";
reg = <0x100>;
enable-method = "psci";
+ operating-points-v2 = <&cl1_opp_tbl>;
+ interconnects = <&mc TEGRA_ICC_MC_CPU_CLUSTER1 &emc>;
i-cache-size = <131072>;
i-cache-line-size = <64>;
i-cache-sets = <512>;
@@ -2932,6 +2938,8 @@ cpu1_1: cpu@101 {
device_type = "cpu";
reg = <0x101>;
enable-method = "psci";
+ operating-points-v2 = <&cl1_opp_tbl>;
+ interconnects = <&mc TEGRA_ICC_MC_CPU_CLUSTER1 &emc>;
i-cache-size = <131072>;
i-cache-line-size = <64>;
i-cache-sets = <512>;
@@ -2946,6 +2954,8 @@ cpu2_0: cpu@200 {
device_type = "cpu";
reg = <0x200>;
enable-method = "psci";
+ operating-points-v2 = <&cl2_opp_tbl>;
+ interconnects = <&mc TEGRA_ICC_MC_CPU_CLUSTER2 &emc>;
i-cache-size = <131072>;
i-cache-line-size = <64>;
i-cache-sets = <512>;
@@ -2960,6 +2970,8 @@ cpu2_1: cpu@201 {
device_type = "cpu";
reg = <0x201>;
enable-method = "psci";
+ operating-points-v2 = <&cl2_opp_tbl>;
+ interconnects = <&mc TEGRA_ICC_MC_CPU_CLUSTER2 &emc>;
i-cache-size = <131072>;
i-cache-line-size = <64>;
i-cache-sets = <512>;
@@ -2974,6 +2986,8 @@ cpu3_0: cpu@300 {
device_type = "cpu";
reg = <0x300>;
enable-method = "psci";
+ operating-points-v2 = <&cl3_opp_tbl>;
+ interconnects = <&mc TEGRA_ICC_MC_CPU_CLUSTER3 &emc>;
i-cache-size = <131072>;
i-cache-line-size = <64>;
i-cache-sets = <512>;
@@ -2988,6 +3002,8 @@ cpu3_1: cpu@301 {
device_type = "cpu";
reg = <0x301>;
enable-method = "psci";
+ operating-points-v2 = <&cl3_opp_tbl>;
+ interconnects = <&mc TEGRA_ICC_MC_CPU_CLUSTER3 &emc>;
i-cache-size = <131072>;
i-cache-line-size = <64>;
i-cache-sets = <512>;
@@ -3181,4 +3197,624 @@ timer {
interrupt-parent = <&gic>;
always-on;
};
+
+ cl0_opp_tbl: opp-table-cluster0 {
+ compatible = "operating-points-v2";
+ opp-shared;
+
+ opp-115200000 {
+ opp-hz = /bits/ 64 <115200000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-192000000 {
+ opp-hz = /bits/ 64 <192000000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-268800000 {
+ opp-hz = /bits/ 64 <268800000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-345600000 {
+ opp-hz = /bits/ 64 <345600000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-422400000 {
+ opp-hz = /bits/ 64 <422400000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-499200000 {
+ opp-hz = /bits/ 64 <499200000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-576000000 {
+ opp-hz = /bits/ 64 <576000000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-652800000 {
+ opp-hz = /bits/ 64 <652800000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-729600000 {
+ opp-hz = /bits/ 64 <729600000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-806400000 {
+ opp-hz = /bits/ 64 <806400000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-883200000 {
+ opp-hz = /bits/ 64 <883200000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-960000000 {
+ opp-hz = /bits/ 64 <960000000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-1036800000 {
+ opp-hz = /bits/ 64 <1036800000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-1113600000 {
+ opp-hz = /bits/ 64 <1113600000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1190400000 {
+ opp-hz = /bits/ 64 <1190400000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1267200000 {
+ opp-hz = /bits/ 64 <1267200000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1344000000 {
+ opp-hz = /bits/ 64 <1344000000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1420800000 {
+ opp-hz = /bits/ 64 <1420800000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1497600000 {
+ opp-hz = /bits/ 64 <1497600000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1574400000 {
+ opp-hz = /bits/ 64 <1574400000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1651200000 {
+ opp-hz = /bits/ 64 <1651200000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1728000000 {
+ opp-hz = /bits/ 64 <1728000000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1804800000 {
+ opp-hz = /bits/ 64 <1804800000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1881600000 {
+ opp-hz = /bits/ 64 <1881600000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1907200000 {
+ opp-hz = /bits/ 64 <1907200000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1958400000 {
+ opp-hz = /bits/ 64 <1958400000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-2035200000 {
+ opp-hz = /bits/ 64 <2035200000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-2112000000 {
+ opp-hz = /bits/ 64 <2112000000>;
+ opp-peak-kBps = <4266000>;
+ };
+
+ opp-2188800000 {
+ opp-hz = /bits/ 64 <2188800000>;
+ opp-peak-kBps = <4266000>;
+ };
+
+ opp-2265600000 {
+ opp-hz = /bits/ 64 <2265600000>;
+ opp-peak-kBps = <4266000>;
+ };
+ };
+
+ cl1_opp_tbl: opp-table-cluster1 {
+ compatible = "operating-points-v2";
+ opp-shared;
+
+ opp-115200000 {
+ opp-hz = /bits/ 64 <115200000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-192000000 {
+ opp-hz = /bits/ 64 <192000000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-268800000 {
+ opp-hz = /bits/ 64 <268800000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-345600000 {
+ opp-hz = /bits/ 64 <345600000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-422400000 {
+ opp-hz = /bits/ 64 <422400000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-499200000 {
+ opp-hz = /bits/ 64 <499200000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-576000000 {
+ opp-hz = /bits/ 64 <576000000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-652800000 {
+ opp-hz = /bits/ 64 <652800000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-729600000 {
+ opp-hz = /bits/ 64 <729600000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-806400000 {
+ opp-hz = /bits/ 64 <806400000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-883200000 {
+ opp-hz = /bits/ 64 <883200000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-960000000 {
+ opp-hz = /bits/ 64 <960000000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-1036800000 {
+ opp-hz = /bits/ 64 <1036800000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-1113600000 {
+ opp-hz = /bits/ 64 <1113600000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1190400000 {
+ opp-hz = /bits/ 64 <1190400000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1267200000 {
+ opp-hz = /bits/ 64 <1267200000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1344000000 {
+ opp-hz = /bits/ 64 <1344000000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1420800000 {
+ opp-hz = /bits/ 64 <1420800000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1497600000 {
+ opp-hz = /bits/ 64 <1497600000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1574400000 {
+ opp-hz = /bits/ 64 <1574400000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1651200000 {
+ opp-hz = /bits/ 64 <1651200000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1728000000 {
+ opp-hz = /bits/ 64 <1728000000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1804800000 {
+ opp-hz = /bits/ 64 <1804800000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1881600000 {
+ opp-hz = /bits/ 64 <1881600000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1907200000 {
+ opp-hz = /bits/ 64 <1907200000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1958400000 {
+ opp-hz = /bits/ 64 <1958400000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-2035200000 {
+ opp-hz = /bits/ 64 <2035200000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-2112000000 {
+ opp-hz = /bits/ 64 <2112000000>;
+ opp-peak-kBps = <4266000>;
+ };
+
+ opp-2188800000 {
+ opp-hz = /bits/ 64 <2188800000>;
+ opp-peak-kBps = <4266000>;
+ };
+
+ opp-2265600000 {
+ opp-hz = /bits/ 64 <2265600000>;
+ opp-peak-kBps = <4266000>;
+ };
+ };
+
+ cl2_opp_tbl: opp-table-cluster2 {
+ compatible = "operating-points-v2";
+ opp-shared;
+
+ opp-115200000 {
+ opp-hz = /bits/ 64 <115200000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-192000000 {
+ opp-hz = /bits/ 64 <192000000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-268800000 {
+ opp-hz = /bits/ 64 <268800000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-345600000 {
+ opp-hz = /bits/ 64 <345600000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-422400000 {
+ opp-hz = /bits/ 64 <422400000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-499200000 {
+ opp-hz = /bits/ 64 <499200000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-576000000 {
+ opp-hz = /bits/ 64 <576000000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-652800000 {
+ opp-hz = /bits/ 64 <652800000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-729600000 {
+ opp-hz = /bits/ 64 <729600000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-806400000 {
+ opp-hz = /bits/ 64 <806400000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-883200000 {
+ opp-hz = /bits/ 64 <883200000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-960000000 {
+ opp-hz = /bits/ 64 <960000000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-1036800000 {
+ opp-hz = /bits/ 64 <1036800000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-1113600000 {
+ opp-hz = /bits/ 64 <1113600000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1190400000 {
+ opp-hz = /bits/ 64 <1190400000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1267200000 {
+ opp-hz = /bits/ 64 <1267200000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1344000000 {
+ opp-hz = /bits/ 64 <1344000000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1420800000 {
+ opp-hz = /bits/ 64 <1420800000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1497600000 {
+ opp-hz = /bits/ 64 <1497600000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1574400000 {
+ opp-hz = /bits/ 64 <1574400000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1651200000 {
+ opp-hz = /bits/ 64 <1651200000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1728000000 {
+ opp-hz = /bits/ 64 <1728000000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1804800000 {
+ opp-hz = /bits/ 64 <1804800000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1881600000 {
+ opp-hz = /bits/ 64 <1881600000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1907200000 {
+ opp-hz = /bits/ 64 <1907200000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1958400000 {
+ opp-hz = /bits/ 64 <1958400000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-2035200000 {
+ opp-hz = /bits/ 64 <2035200000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-2112000000 {
+ opp-hz = /bits/ 64 <2112000000>;
+ opp-peak-kBps = <4266000>;
+ };
+
+ opp-2188800000 {
+ opp-hz = /bits/ 64 <2188800000>;
+ opp-peak-kBps = <4266000>;
+ };
+
+ opp-2265600000 {
+ opp-hz = /bits/ 64 <2265600000>;
+ opp-peak-kBps = <4266000>;
+ };
+ };
+
+ cl3_opp_tbl: opp-table-cluster3 {
+ compatible = "operating-points-v2";
+ opp-shared;
+
+ opp-115200000 {
+ opp-hz = /bits/ 64 <115200000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-192000000 {
+ opp-hz = /bits/ 64 <192000000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-268800000 {
+ opp-hz = /bits/ 64 <268800000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-345600000 {
+ opp-hz = /bits/ 64 <345600000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-422400000 {
+ opp-hz = /bits/ 64 <422400000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-499200000 {
+ opp-hz = /bits/ 64 <499200000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-576000000 {
+ opp-hz = /bits/ 64 <576000000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-652800000 {
+ opp-hz = /bits/ 64 <652800000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-729600000 {
+ opp-hz = /bits/ 64 <729600000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-806400000 {
+ opp-hz = /bits/ 64 <806400000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-883200000 {
+ opp-hz = /bits/ 64 <883200000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-960000000 {
+ opp-hz = /bits/ 64 <960000000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-1036800000 {
+ opp-hz = /bits/ 64 <1036800000>;
+ opp-peak-kBps = <816000>;
+ };
+
+ opp-1113600000 {
+ opp-hz = /bits/ 64 <1113600000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1190400000 {
+ opp-hz = /bits/ 64 <1190400000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1267200000 {
+ opp-hz = /bits/ 64 <1267200000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1344000000 {
+ opp-hz = /bits/ 64 <1344000000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1420800000 {
+ opp-hz = /bits/ 64 <1420800000>;
+ opp-peak-kBps = <1600000>;
+ };
+
+ opp-1497600000 {
+ opp-hz = /bits/ 64 <1497600000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1574400000 {
+ opp-hz = /bits/ 64 <1574400000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1651200000 {
+ opp-hz = /bits/ 64 <1651200000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1728000000 {
+ opp-hz = /bits/ 64 <1728000000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1804800000 {
+ opp-hz = /bits/ 64 <1804800000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1881600000 {
+ opp-hz = /bits/ 64 <1881600000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1907200000 {
+ opp-hz = /bits/ 64 <1907200000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-1958400000 {
+ opp-hz = /bits/ 64 <1958400000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-2035200000 {
+ opp-hz = /bits/ 64 <2035200000>;
+ opp-peak-kBps = <3200000>;
+ };
+
+ opp-2112000000 {
+ opp-hz = /bits/ 64 <2112000000>;
+ opp-peak-kBps = <4266000>;
+ };
+
+ opp-2188800000 {
+ opp-hz = /bits/ 64 <2188800000>;
+ opp-peak-kBps = <4266000>;
+ };
+
+ opp-2265600000 {
+ opp-hz = /bits/ 64 <2265600000>;
+ opp-peak-kBps = <4266000>;
+ };
+ };
};
--
2.50.1
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